explain xkcd - User contributions [en]

3148: 100% All Achievements

2025-10-06T06:01:42Z

WriterArtistCoder: This actually happens

{{comic
| number = 3148
| date = September 29, 2025
| title = 100% All Achievements
| image = 100_all_achievements_2x.png
| imagesize = 271x475px
| noexpand = true
| titletext = I'm trying to share my footage of the full run to prove it's not tool-assisted, but the uploader has problems with video lengths of more than a decade.
}}

==Explanation==
{{incomplete|This page was created BY AN ANY% RUNNER. Don't remove this notice too soon.}}
100% All Achievements is a category of {{w|Speedrunning|video game speedruns}} where the goal is to do everything possible in the game, as fast as possible. Many games have a progress bar to track completion of the game, making the "100%" criterion officially defined. "Achievements," also known as "trophies" for games on Sony-branded consoles, are another way to track accomplishments, either tracked within the game itself or through the storefront used to purchase the game such as the Microsoft Store.

[[Cueball]] is attempting a 100% All Achievements run for his university, which is a ridiculous pursuit for several reasons. Even though 100% runs for video games can take very long (up to [https://www.speedrun.com/baten_kaitos_eternal_wings_and_the_lost_ocean?h=100&x=mke7v926 two weeks]), they don't even come close to the amount of time needed to complete a single university major, let alone every class. This would be prohibitively expensive for most people due to the high cost of university attendance. Moreover, "All Achievements" is vaguely defined in this scenario, and the "achievements" possible at a university will change as courses, academic tracks, and degrees offered change. In contrast, even if the possible achievements in a video game change as updates and downloadable content are released, it is possible to specify a particular version of the game used for the speedrun. In addition, the university seems upset with this choice of action, and are demanding he stop it and graduate. This may be because they doubt his ability to retain this information, perhaps because they simply cannot get as much tuition from one man, or possibly because they feel he is making a mockery of the institution.

While this might sound ludicrous, "{{w|perpetual students}}" are people who spend long periods at a university. {{w|Michael Nicholson}}, the world record holder, completed 30 majors between before 1964 and 2016.

Gen-ed, which Cueball says he had completed all of in 2010, refers to {{w|Curriculum#Core_curriculum|general education courses}}. This usually means either:
(1) a set of classes, or at least categories of classes (such as literature, history, science, foreign language, etc.), that must be taken by all students, regardless of major; or
(2) classes that have few prerequisites, intended to be taken by students in other disciplines or by people not in university programs at all, to broaden their education (for example, a course in general science for arts students). It is common for a university program to require a student to take several courses that are somewhat related to their nominal preferred specialty in their first year, to provide a foundation for later studies and to permit some flexibility if the student's interests change. In some countries, some gen-ed courses are also included in programs of study so that students get at least a bit of exposure to unrelated disciplines. Most students typically finish these within their first year, if not their first term.

Classes at a university typically receive a code that combines the name of the field/discipline being taught with a two- or three-digit number (e.g., a course in anthropology might be ANTH 209). The leading digit typically provides information about how advanced a class is: lower division work might receive a 0 or 1, while upper division and graduate courses will receive higher numbers. Although there is no standardization across universities for which specific numbers equate to which course levels, the generally accepted baseline education given in any specific subject is usually associated with the number {{w|101 (number)#In_education|101}}, while classes in the 400s would be graduate-level courses at most universities.

In traditional speedrunning, a {{w|tool-assisted speedrun}} (mentioned in the title text) is one done with software such as a {{w|video game console emulator|video game emulator}} to record and then play back incredibly precise movements. These are typically used to show the theoretical upper limit of how quickly a game can be completed, even if the required techniques are beyond human capabilities (i.e. performing a long chain of optimal actions, flawlessly, without the need to replay or restart any stage). Particularly exceptional speedruns may rouse suspicion that they weren’t truly performed by a human, which is what Cueball is trying to quell. It is unclear how such tools might be applied to the pursuit of education, but Cueball may have meant using artificial intelligence or similar "cheats" to illegitimately complete his work. Unassisted speedruns are typically reviewed in full by a moderator of the speedrunning community for that game to ensure there truly were no tools involved. There is no known community for university speedrunning,{{Citation needed}} so no moderators will be able to review the years of footage to determine whether the speedrun was legitimate.

Most video-sharing services limit the length of uploaded videos, either by size or length, for a variety of reasons. A decade-long video file is almost certainly too big for any service: an hour of 720p-resolution video is about one gigabyte [[https://www.overcasthq.com/blog/how-big-are-video-files/ Overcast]], so a decade would be about 100 terabytes. The longest video ever to be hosted on YouTube is just under 25 days [[https://www.imdb.com/title/tt12095652/trivia/ IMDB]], under 1% of what Cueball wants. Such a video would require significant infrastructure support by the service for it to be allowed, not to mention presenting challenges to recording and storing it in the first place.

==Transcript==
{{incomplete transcript|Don't remove this notice too soon.}}
:[Cueball, arms outstretched, is talking to White Hat.]
:Cueball: I finished all the gen-ed back in 2010, and I'm up to the 400-level courses in most departments.
:Cueball: But now one of my advisors is saying I "can't have more than 20 majors" and "need to graduate next year."
:Cueball: It's outrageous!

:[Caption below the panel:]
:My university is making it really hard to finish a 100% all achievements speedrun.

{{comic discussion}}<noinclude>
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]
[[Category:Video games]]

3148: 100% All Achievements

2025-09-30T04:52:01Z

WriterArtistCoder: /* Explanation */

3148: 100% All Achievements

2025-09-30T04:50:44Z

WriterArtistCoder: /* Explanation */ elaborated on 100%ing, tool-assistance

3148: 100% All Achievements

2025-09-30T04:37:44Z

WriterArtistCoder: /* Explanation */ longest speedrun ever

3133: Dual Roomba

2025-08-26T05:04:32Z

WriterArtistCoder: /* Explanation */

{{comic
| number = 3133
| date = August 25, 2025
| title = Dual Roomba
| image = dual_roomba_2x.png
| imagesize = 679x272px
| noexpand = true
| titletext = I tried uploading it to a household appliance porn site I found, but apparently their content is limited to only fans.
}}

==Explanation==
{{incomplete|This page was created by a DIRTY ROOMBA. Don't remove this notice too soon.}}

A Roomba is a small household robot that was designed to clean floors. Its underside is equipped with brushes and vacuums to clean the floors. These undersides can be repurposed to clean other Roombas, as Cueball discovers.

When Cueball shows this interesting property to White Hat, White Hat remarks that the cleaning Roombas look like they are having sex, as they are going back and forth across each other's surfaces and change positions in the middle of it.

==Transcript==
{{incomplete transcript|Don't remove this notice too soon.}}
:[Cueball and White Hat are facing each other. A Roomba is to the right side of Cueball, who has his arm up.]
:Cueball: The Roomba keeps my floor clean.
:Cueball: But what do I do when the '''''Roomba''''' gets dirty?

:[Cueball and White now face 2 Roombas, with Cueball gesturing towards the Roombas. One Roomba is climbing up a ramp in front of the second Roomba.]
:Cueball: Simple:
:Cueball: I got a second Roomba and a ramp, so they can clean each other.

:[Cueball kneels down to flip the first Roomba over.]
:Cueball: After the tops are clean, I flip one of the over so they can clean each others’ undersides.

:[Cueball and White Hat are now watching the Roombas clean each other.]
:White Hat: There’s nothing NSFW about this, and yet it’s the most NSFW thing I’ve every seen.
:Cueball: Yeah, my Youtube DIY video about this got demonetized.

{{comic discussion}}<noinclude>
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]
[[Category:Robots]]
[[Category:Sex]]

2629: Or Whatever

2025-08-15T01:25:50Z

WriterArtistCoder: /* Explanation */ "interlocutors" too formal

{{comic
| number = 2629
| date = June 6, 2022
| title = Or Whatever
| image = or_whatever.png
| titletext = Oh yeah, I didn't even know they renamed it the Willis Tower in 2009, because I know a normal amount about skyscrapers.
}}

==Explanation==

The {{w|Willis Tower}} (formerly the Sears Tower) is a 108-story, 442.1 meter skyscraper in Chicago. It is currently the third tallest building in North America, and was indeed the tallest building in the world for 25 years, surpassing the {{w|World Trade Center (1973–2001)|World Trade Center}} upon opening in 1973, and being surpassed by the {{w|Petronas Towers}} upon their opening in 1998.

[[White Hat]] conveys some interesting historical trivia to [[Cueball]], regarding the {{w|Sears Tower}}. Cueball then sets the record straight by correcting White Hat's use of the word tower: In the category of 'tower', the Willis Tower was never the tallest. Cueball then realizes he just one-upped White Hat with what ''he'' knows about tall structures in general, which might make him sound obsessive, so he tags on the meaningless caveat of "or whatever".

This is meant to diffuse the tension he may have added by his well-meaning contradiction, but could also be taken as passive-aggressive by the other person, who may already be touchy about the original 'correction'.

In the title text, being already self-conscious that he has overstepped the mark for polite small talk, he then hypercorrects the self-perceived tone of his response by explicitly denying that he knows far more about the tower, but only by providing the very facts that he is trying to claim not to know. Alternately, this could be White Hat responding to something else Cueball said, as an annoyed way to either get Cueball to stop, or to make a point that Cueball knows more than is "normal" about skyscrapers.

This comic hinges on the [https://www.engineersupply.com/What-is-the-difference-between-building-and-construction.aspx debate] about the tallest <i>structure</i> vs tallest ''building''. A {{w|building}} is generally defined as a human-built structure ''fit for human habitation'' when it is fit for human habitation, while a {{w|structure}} is generally defined as anything humans make. (Or in some cases, anything an animal makes, like [[2418: Metacarcinization|crab shells.]])

It is far from unusual for the tallest building (habitable) to be shorter than the tallest structure (uninhabitable), such as in 1974 when the tallest structure was the {{w|Warsaw radio mast}} at 646.38 meters. The radio mast was uninhabitable,{{Citation needed}} so the tallest building was the Sears Tower at 442.1 meters. The Warsaw tower collapsed in 1991, so it was not the tallest structure for the majority of the '90s.

After the Warsaw Tower's demise, the {{w|KVLY-TV mast}}, which stood at 629 meters, held the record of tallest structure until either 2000 or 2010, with the opening of the {{w|Petronius (oil platform)|Petronius platform}} and {{w|Burj Khalifa}} respectively. (The date depends on whether you count underwater towers, as the Petronius platform is an oil rig and only 75 meters of the platform are above water.) It was also the tallest guyed mast up until 2019, when it was reduced to 605.6 meters, giving the {{w|KRDK-TV mast}} the record.

The {{w|CN tower}} stands at 553.3 meters (measured from top of spire), which is higher than the Sears/Willis tower but shorter than the KVLT-TV mast. It is mentioned as it has some habitable space but not much, causing debate about whether it is a building (referenced below). It was never the tallest structure, but if it's a building it would have been the tallest in the world from its opening in 1976 until the {{w|Canton Tower}}'s in 2009. It is currently the 9th tallest building.

The debate surrounding the tallest building does not stop at building vs. structure. Architects have long argued about what the height definition of a building should be. Should it include antennas sitting at the top of the building? How about spires that form part of the architectural design of the building but are not part of the habitable space? Should we focus instead on the highest habitable floor? The debate has historically had relevance every time a new record is claimed by developers eager to reach new heights using any means possible ([https://www.npr.org/2013/11/08/243714332/size-does-matter-at-least-in-the-tallest-building-debate Size Does Matter, At Least In The Tallest Building Debate]).

There is yet more debate about what counts as a building vs. a structure. While some people would say that any structure with any habitable space is a building, most people in the field agree that there is a certain threshold of habitable space, below which there is not enough habitable space to count as a "building", even if there is some.

A main point in this debate are {{w|Radio masts and towers|TV towers}}, which are often tall towers with little habitable space in them, but with an observation deck at the top. Examples include the {{w|Tokyo Skytree}}, {{w|Fernsehturm Stuttgart}}, and CN tower. A similar structure is the {{w|Dubai Creek Tower}}, a tower under construction in Dubai, set to become the world's tallest structure. (The Dubai Creek Tower will not, however, broadcast tv signals.)

TV towers are sometimes counted as buildings as they do have some habitable space. However, they are often not as they are commonly considered to not have enough habitable space to be buildings, hence Cueball's line "The CN tower isn't always considered a building".

{{w|List of tallest structures|Wikipedia lists}} the tallest structures, and [https://www.youtube.com/watch?v=kkMWb_8IiB4 this YouTube video] explains a bit more about tall buildings/structures. Since 2010 the Burj Khalifa has been both the tallest structure and the tallest building in the world.

==Transcript==
:[White Hat and Cueball are looking out on a skyline with six smaller skyscrapers and one much taller. The tall building has three plateaus, where it gets thinner before the top. On the top there are also two tall antennas, one twice as high as the other. Around the buildings there are 7 small clouds and two distant birds flying next tot he top of the tallest building. The two are standing on a ground behind a fence, maybe a viewing point, for looking in over the city skyline. They are looking toward the tallest building.]
:White Hat: You know, back in the 90s, the Sears Tower was the world's tallest tower.
:Cueball: Yeah! Or "building." The CN Tower and the KVLY-TV Antenna were taller, but the CN Tower isn't always considered a building and the antenna is supported by guy wires or whatever.

:[Caption below the panel]:
:Whenever I get self-conscious about how obsessive I sound about some random topic, I panic and tack on "or whatever."

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]
[[Category:Social interactions]]

what if? articles

2025-08-11T06:10:36Z

WriterArtistCoder: Added rest of the YouTube Shorts

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].''<noinclude>
{{notice|There are about '''3''' incomplete explanations below, but [[#1-13|the books-exclusive ones]] are too short! (They should be a summary of the answer, not just 1-2 sentences.) [[#1-13|''(jump to the book-exclusive chapters)'']] ''(For help with the templates, see the '''''[[What If? chapters#Editors|Editors section]]'''''!''}}

</noinclude>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.<noinclude>
[[Category:Incomplete explanations| ]]</noinclude>
<div style="clear: both"></div>
{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in... <noinclude></noinclude> ''(click to sort)'' <noinclude></noinclude>
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{What If|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate in about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{What If|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every living ex-president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{What If|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{What If|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|In physics, a {{w|mole (unit)|mole}} is a number that equals approximately 6.022 × 10<sup>23</sup>. If this amount of moles (the furry animals) were put in space, they would form a sphere a little bit larger than our Moon with about the same gravity as Pluto. The surface would freeze and trap the interior warmth, causing geysers of hot meat and methane.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{What If|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{What If|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{What If|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{What If|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{What If|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{What If|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|{{book|23|2025|04|01|WH4g1ptJ-70|What if the Earth rotated 90 degrees?}}
|-
|[[File:Droppings.png|100px]]
|'''{{What If|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|{{notice|I'm assuming the last sentence of this is saying: "if you're under a tree → a few hours. If not → much much more than 195 yrs." Needs to be explained better.}}Assuming an even distribution of all birds across the Earth's surface and an hourly pooping frequency, it would take you about 195 years. However, those assumptions are unrealistic: it'd probably be more likely a matter of hours if you were laying under a tree or something.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{What If|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{What If|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{What If|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{What If|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|Surprisingly, not much! Large waves already disappear quickly when created by surface explosions, and moving the detonation underwater only lessens the effect. If you exploded a Tsar Bomba at the bottom of the Mariana Trench, the resulting eruption would create massive bubbles before turning into warm water and debris.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{What If|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{What If|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{What If|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O'Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{What If|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{What If|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the {{w|Oh-My-God particle}}), the Earth would explode with enough force to obliterate the entire Solar System.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{What If|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14|Machine-Gun Jetpack}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{What If|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{What If|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{What If|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine. And this contraption would not attain orbital velocity, but rapidly fall back to Earth after briefly leaving the atmosphere. Accelerating to orbital velocity is a whole other class of problem and cannot be achieved using model rocket engines in any practical way.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{What If|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but the paths they would take would make some really cool patterns due to various factors, such as the Earth's rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|{{book|22|2025|03|04|YL2VNtus4xk|What if the wise men kept walking after Jesus’s birth?}}
|-
|[[File:Leap Seconds.png|100px]]
|'''{{What If|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|The only real way to do this is by hitting Earth with asteroids; all other ideas would be too difficult or wouldn’t work. With 50,000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds (mostly because it would deliver the energy of about one dinosaur-killer asteroid every couple days, wiping out life on Earth quite quickly)
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{What If|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|The world population would continue to grow, though 40% more slowly. Pilots, drivers, and surgeons would die en route and mid-operation, but these would be comparable to usual accident rates and handled fairly easily.
|{{blog|27|2013|01|08|1d late}}
|
|
|-
|[[File:Steak Drop.png|100px]]
|'''{{What If|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked, as the steak will have to pass through parts of the atmosphere that are freezing cold and the parts of the fall where heat is being applied are more likely to char and disintegrate the steak than cook it.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{What If|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{What If|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{What If|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{What If|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{What If|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|The sea level would fall by about 6 microns, slightly more than the diameter of a strand of spider silk. However, since the oceans are currently rising at about 3.3 millimeters per year due to global warming, the water would be back up to its original average level in 16 hours.
|{{blog|33|2013|02|19}}
|
|
|-
|[[File:what if? Twitter.png|100px]]
|'''{{What If|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10<sup>46</sup> meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{What If|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{What If|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
|
|
|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{What If|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{What If|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|You could ''reach'' Voyager I with some well-timed gravity assists from Jupiter and Saturn, but getting back would require an ''absurd'' amount of fuel. You could use ion fields to require less fuel, but they also produce less thrust.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{What If|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|This can't really happen, due to the size and weight difference between the goalie and a hockey puck. You'd need to fire an object at Mach 8 to knock the goalie back, but firing a puck at that speed would char the puck while air resistance would slow it down. If you actually did fire a hockey puck at a goalie at high speeds, it would have the same effect as hitting a cake with a tomato as hard as you can.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{What If|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{What If|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|No. While technically the car fleet would outpace the continental drift, the continental drift is being powered by the forces in the Earth's mantle, and these forces outmatch the car fleet by millions of times.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{What If|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|The longest way you can experience a sunset is by driving on certain roads in Norway and Finland for 95 minutes, as this is where the best method to outpace the Sun works (outpacing {{w|Terminator (solar)|the terminator}}). A similar concept has been explored in comic [[162: Angular Momentum]].
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{What If|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|Even if we change the requirements to just the passengers surviving, this isn't plausible. A train can't complete a full loop without the loop being too small, making the train move too fast and making every passenger die from the g-forces involved.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{What If|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Using estimations and aerodynamics calculations, Aroldis Champman (holder of the record for fastest pitch) could probably throw up to 16 giraffes high if he was using a golf ball. Unless you count letting go of balloons, of course.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{What If|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{What If|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|A bowling ball the size of the Earth would be much less dense, and have much less gravity. Due to this, the finger holes would collapse. causing eruptions of hydrocarbons and scars similar to those on the Moon.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{What If|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They wouldn't be able to see us very well. Radio waves fade quickly in space and we've stopped sending out as many of them. If they happened to pick up, they would only get a message similar to the [https://en.wikipedia.org/wiki/Wow!_signal Wow! Signal]. The best message they could see is visible light, as the water and weather on Earth's surface would be a telltale marker of some form of life.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{What If|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{What If|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|{{book|24|2025|04|15|X7sbn9LMZOg| What if the sun suddenly went out?}}
|-
|[[File:Extreme Boating.png|100px]]
|'''{{What If|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the “third sound” as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{What If|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{What If|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{What If|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|Hundreds of thousands of years, so you'll need a bigger portal. As their basins are cut off, many shallow seas and a few deep trenches remain, leaving much of Earth still covered with water. Massive, unpredictable environmental changes would probably wipe out mankind. If they didn't, the Dutch would take over the world, no longer preoccupied with preventing their lands from flooding as they are now.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{What If|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|The water would fill the {{w|Valles Marineris}}, eventually leaving only {{w|Olympus Mons}} and some other small islands. The sea would ultimately freeze over, become covered in dust, and migrate to permafrost at the poles. In the meantime, the Netherlands would colonize Mars through the portal. The video additionally mentions that the greenhouse gas effects caused by all the new water might keep Mars's oceans liquid.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{What If|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances they just sneezed are 1 in 40000. There's also a 1 in a billion chance that the person you called just murdered someone, a 1 in 10 trillion chance they've just been killed by lightning, and another 1 in 10 trillion chance that you and the other person called each other simultaneously.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{What If|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{What If|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{What If|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{What If|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|You'd need six printers, but if using an ink printer, costs would rack up to $500,000 a month, dwarfing paper and maintenance costs. You'd need to file away past versions in case they were reverted (restored), which would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{What If|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{What If|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{What If|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|You would need a balloon at least 10 to 20 meters across to slow your fall, as well as needing 10 helium tanks that are 250 cubic feet. You'd have to do it really quickly though, and starting from a higher place will not help due to the atmosphere's thinness making you accelerate.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{What If|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|Using electric consumption and datacenter spending as a measuring stick, Google probably has around 1-2 million servers, which equates to around 15 exabytes (or 15,000,000,000,000,000,000 bytes). Assuming a punch card holds 80 characters, all of that data comes out to 4.5 kilometers/2.8 miles, 3x deeper than the New England ice sheets.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{What If|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|A nudist would survive for five hours, then succumb to the cold. With a good coat, one would survive for seven, even plausibly eight, until reaching the low-oxygen {{w|death zone}} and suffocating. However, your corpse would outlast the Earth as it was swallowed by the Sun.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{What If|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|It's difficult to pin down an "average" for Twitter timeline lengths, but an estimate by Diego Basch and the Tweet rate as of 2013 suggests that the section timeline extending to the past would have 345 billion tweets and be 8,000,000 kilometers (5,000,000 miles) tall. Using extrapolation techniques similar to those used in the {{w|German tank problem}}, the future and past timelines combined would likely contain 690 billion tweets.
|{{blog|65|2013|10|01}}
|
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|-
|[[File:500 MPH.png|100px]]
|'''{{What If|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|500 mph winds are more than fast enough to pick up a person and propel them through the air. In fact, 500 mph winds are so fast that they only occur on Earth in extreme situations like the immediate vicinity of an erupting volcano or the aftermath of a major asteroid impact at which point wind speed would only be one of many dangers to human survival.
|{{blog|66|2013|10|08}}
|
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|[[File:Expanding Earth.png|100px]]
|'''{{What If|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|After a month, the gain would be measurable but within the normal variation of gravity. After a year, it would be more prominent at 5%. Humans could survive with difficulty for a decade, but even in specially-built environments, they would succumb within a century as air itself became toxic from atmospheric pressure. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|{{book|6|short-video=yes|2025|08|05|5k8ciEx__5w|Circumference pop quiz!}}
|-
|[[File:Little Planet.png|100px]]
|'''{{What If|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|Technically, yes. However, there would be major challenges. For one, gravity would be at full strength at your feet, but only 25% strength at your head, giving the illusion that you're being stretched. You would need to sprint at 3 meters per second to leave orbit. However, if you don't make it to that point, you would enter a highly eccentric orbit which would pull on your body in strange ways. Alternatively, you could escape the atmosphere by jumping. If you can make a dunk in basketball on Earth, you could escape this body by jumping.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{What If|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|This depends on if Facebook stays popular or declines in popularity over time. In the former case, the dead would only outnumber the living well into the 2100s; while in the latter, this happens around 2060. Facebook can afford to keep all our data indefinitely, but there are ethical questions.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{What If|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|A normal, standard-issue mower running for 10 hours straight could cut an area of 25,000 square meters, or 27,000 yards. Using a much faster mower commissioned by the magazine ''Top Gear'' that is used all day, every day, it could cut an adult male cougar's home range (which [https://wdfw.wa.gov/species-habitats/species/puma-concolor#:~:text=Adult%20male%20cougars%20roam%20widely,terrain%2C%20and%20availability%20of%20prey. the Washington Department of Fish and Wildlife] reports as 50-150 miles or 80-240 kilometers).
|{{blog|70|2013|11|05}}
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|[[File:Stirring Tea.png|100px]]
|'''{{What If|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|No, not really, It would take at least 1 horsepower (a lot for a person stirring), and reducing the power would just make it cool faster. Stirring faster and faster would cause a vacuum to form and stirring to become ineffective.
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{What If|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|The most well-document candidates are six Apollo astronauts who ventured behind the dark side of the Moon. Antarctic explorers and pre-colonialism Polynesian explorers have a shot, but there's no good evidence of specific people who beat the Apollo record. Astronauts Mike Collins and Al Worden said they were not at all lonely, the latter even enjoying his soltitude.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{What If|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|Neutrinos are subatomic particles that barely interact with the universe at all, so it's hard to imagine a scenario where they could harm you, even in a supernova. But at about 2.3 AU, or a little farther than Mars is from the Sun, even the neutrinos would be dense enough to kill you.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{What If|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|Humans have likely consumed 6.5 trillion liters or 1.7 trillion gallons of soda ever, based on estimates of population growth and popularity of soda. Assuming humanity has drunk 100 trillion liters (26 trillion gallons) of water, it is reasonable to conclude that only 0.0000005% of Earth's current water reservoir has been turned into a soft drink. However, considering how long water takes to cycle around and certain prehistoric life forms, the water in the average soda was likely once consumed by a dinosaur.
|{{blog|74|2013|12|03}}
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|-
|[[File:Phone Keypad.png|100px]]
|'''{{What If|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|The English word with the most consecutive letters on the same key is "Nonmonogamous".
|{{blog|75|2013|12|10}}
|
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|-
|[[File:Reading Every Book.png|100px]]
|'''{{What If|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|About the 1500s, as the population of active English writers reached a few hundred, meaning you would never be able to catch up (using the average word count for a few famous authors as a baseline). You might not want to read them, anyways.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{What If|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|We would reach 10 to 12 meters at age 20, though the human body is not scalable to those heights, as our bone structure is too thin, while our hearts wouldn't be able to pump the blood around.
|{{blog|77|2013|12|31|7d late}}
|
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|[[File:T-rex Calories.png|100px]]
|'''{{What If|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|Estimates vary, but the T-rex was estimated to need 40,000 calories per day. Ryan North of Dinosaur Comics tells us that the average 80 kg/175 pound human [http://www.topatoco.com/merchant.mvc?Screen=PROD&Store_Code=TO&Product_Code=QW-PERSON&Category_Code=QW contains 110,000 calories]. Therefore, a T-rex would need to eat someone every 2 days or so.
|{{blog|78|2014|01|07}}
|{{book|2|7|T. Rex Calories}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{What If|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|An average cup of tea requires 2 grams of tea per 100 mL of water, and to make proper tea out of the Great Lakes, you would need 450 billion tons of tea for the Great Lakes' 22,600 cubic kilometers/5400 cubic miles of water. A total year's supply of tea is only 4.8 million tons, which would make tea about as strong as 2 drops in a bathtub. To make proper lake tea, you could use Wular Lake in Kashmir or Ullswater in UK's lake district, due to the volume of both being small enough for the tea to work.
|{{blog|79|2014|01|14}}
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|[[File:Pile of Viruses.png|100px]]
|'''{{What If|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|''Human'' viruses would fill about ten oil drums. ''All'' viruses would form a wet heap the size of a small mountain, with a texture resembling pus or meat slurry.
|{{blog|80|2014|01|21}}
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|[[File:Catch!.png|100px]]
|'''{{What If|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|Yes, eventually the bullet would come to a maximum height, at which point you could grab the bullet before it fell down. You'd need to grip it firmly, because the bullet would still have it's rotational momentum and might jump out of your hand. A larger bullet would require a larger height to catch it at, and even then, it would still be difficult to grab. Of course, this is illegal and can injure you or other people.
|{{blog|81|2014|01|28}}
|{{book|2|12}}
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|-
|[[File:Hitting a comet.png|100px]]
|'''{{What If|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|The baseball thing is much harder. You'd have to hit it out of the atmosphere, and a baseball is too small to do that. Even if you could, it's still not a fair comparison because astrophysicists are allowed to refine their approach as they close in on the target, which you can't do with a thrown baseball. It turns out that the comet mission requires about the same level of precision as laser eye surgery.
|{{blog|82|2014|02|05|1d late}}
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|[[File:Star Sand.png|100px]]
|'''{{What If|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|Although red giants aren't as common as Sun-like stars or red dwarfs, they would form a stretch of gravel that went on for miles due to their large relative volume. 99% of all stars would form a small patch of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{What If|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|That there isn't enough paint to go around. The total estimated amount of produced paint, a trillion litres, is only enough to paint as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
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|-
|[[File:Rocket Golf.png|100px]]
|'''{{What If|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|You ''could'' propel your ship using golf balls, but, assuming they are being fired at 226 mph (363 km/h), the fastest world record, the amount of golf balls needed for this would be around the size of Earth and wouldn't even get you to the Moon. You'd need a potato cannon fueled by acetylene firing golf balls at 310 mph (500 km/h) which reduces the size of the golf mass to 150 miles (240 kilometers). This would be incredibly costly and firing them faster would essentially be the same as building a normal rocket.
|{{blog|85|2014|02|25}}
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|[[File:Far-Traveling Objects.png|100px]]
|'''{{What If|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|There are a few different frames of reference you can look at, but in normal terms Mariner 10 has traveled much farther than Voyager 1. It's travelled a couple of light-days around the Sun, while the Voyager probes have only travelled a dozen light-hours.
|{{blog|86|2014|03|04}}
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|[[File:Enforced by Radar.png|100px]]
|'''{{What If|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Radio waves are generally ''very weak''. You'd need the collective energy of trillions of cell phones just to levitate a snow flake. To stop a car, you'd need at least 2 trillion joules of radiation, which would vaporize the car and everything else around it.
|{{blog|87|2014|03|11}}
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|[[File:Soda Sequestration.png|100px]]
|'''{{What If|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|There are currently 400 parts of carbon dioxide per million. To bring it down to pre-Industrial levels, you'd need 450 quadrillion cans of soda, each being able to hold 2.2 grams of CO2. This would cover Earth's land 10 times over.
|{{blog|88|2014|03|18}}
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|[[File:Tungsten Countertop.png|100px]]
|'''{{What If|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|Tungsten has the highest melting point of any element, but even tungsten would melt before it got too far. If you protected it with a heat shield, it would get destroyed all the same by the battering of the particles in the Sun's atmosphere. It could possibly penetrate the surface if it was larger, but as it stands, it wouldn't get past the outer layers.
|{{blog|89|2014|03|25}}
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|[[File:Great Tree, Great Axe.png|100px]]
|'''{{What If|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|The seas would be a little bigger than the Pacific Ocean. Trees can't grow taller than about 130 meters naturally, and would physically crush itself if above a few kilometers tall. Ignoring these restraints, the tree would be about 75 km tall with trunk diameter of 2 km. Ignoring human size restraints, the person would be close to 3 km tall. The axe would be about 500 meters long and relatively the size of a flimsy hatchet. It may take a few weeks to chop down the tree and the impact would create a tsunami that probably wouldn't wipe out the human race, but would be likely the deadliest single disaster in our history.
|{{blog|90|2014|04|03|2d late}}
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|[[File:Faucet Power.png|100px]]
|'''{{What If|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|Small hydroelectric dam in the bathtub would yield about $0.25 per month of electricity, but the best option would probably be to bottle and sell your tap water, yielding about $38 million per year at $1.50 per bottle.
|{{blog|91|2014|04|08|2d early}}
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|[[File:One-Second Day.png|100px]]
|'''{{What If|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
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|[[File:Windshield Raindrops.png|100px]]
|'''{{What If|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Water droplets in air are normally lighter than the air, so this wouldn't happen under normal circumstances. However, at supersonic speeds, the water droplet would impact the windshield at Mach 18. It wouldn't shatter the windshield, but it would slowly batter it away.
|{{blog|93|2014|04|22}}
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|[[File:Billion-Story Building.png|100px]]
|'''{{What If|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|The tower would be far too big to support itself under its own weight. The tower would also extend past the Moon. The sheer amount of elevators needed would provide little to now room for actual usable space. Additionally, space junk would be a large problem, as there is a high probability that space junk would collide with the tower.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|{{book|21|2025|02|11|Z_xJ40QXu7Q|What if you built a billion-story building?}}
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{What If|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|The Apollo Program took about the same manpower as the building of the Great Pyramids, but physics wise, the Great Pyramid only contains 10<sup>12</sup> joules of gravitational potential energy. A single Saturn V rocket's fuel has 20 times more energy.
|{{blog|95|2014|05|06}}
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|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{What If|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|The debt would be incredibly great, to the point that everything ever created by man does not have enough value to pay it off. For comparison, former soliciter general Ted Olson leaked that he charges $1600 per hour for his services. Even if every habitable planet in the Milky Way had a population of 8 billion Ted Olsons, and you hired all of them for a thousand generations, the cost would still be lower than if you lost.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
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|[[File:Burning Pollen.png|100px]]
|'''{{What If|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
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|[[File:Blood Alcohol.png|100px]]
|'''{{What If|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|No, you can't. Alcohol in a drunk person's blood would be very diluted and by the time you drank the 14 glasses needed to get drunk, you would've vomited on the account of drinking blood. That aside, you could also get iron overload as well as various blood-borne diseases.
|{{blog|98|2014|05|27}}
|{{book|2|42}}
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|[[File:Starlings.png|100px]]
|'''{{What If|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|Each bird is 85 grams, with a density of around 43 grams per square meter. Because of this, the air would be 25 times stronger than the starlings and the substance governing the collapse. The air would have to be bigger than the Earth to collapse the starlings and the starlings themselves would need to be bigger than the Solar System. They would then promptly turn into a star.
|{{blog|99|2014|06|03}}
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|[[File:WWII Films.png|100px]]
|'''{{What If|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|Assuming the average run time of a WWII film was 95 minutes, the combined length was 300 days, meaning World War II was longer than the movies 7 times over. The two most likely candidates for highest movie:war ratio are the Indo-Pakistani war, which lasted 13 days and has 5 catalogued films about it, and the Anglo-Zanzibar war, which only lasted 38 minutes but lacked any films.
|{{blog|100|2014|06|11|1d late}}
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|[[File:Plastic Dinosaurs.png|100px]]
|'''{{What If|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|Contrary to the name, oil is not made of dead dinosaurs, mostly being composed of marine plankton and algae. Geology is complicated, but the gist is that only a small fraction of a plastic dinosaur toy could've come from dinosaur oil, and depending on the location, it may contain none at all.
|{{blog|101|2014|06|18}}
|{{book|2|26}}
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|-
|[[File:Keyboard Power.png|100px]]
|'''{{What If|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|Writing one full novel would provide enough energy to run a laptop for 15 seconds. If each novel takes you six months, this would save a fraction of a penny of electricity. To keep a laptop, you'd need to write a novel every ten seconds, and to run a microwave would require one novel per second.
|{{blog|102|2014|06|25}}
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|[[File:Vanishing Water.png|100px]]
|'''{{What If|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|If all water vanished, the first to notice would be anybody currently in the ocean, and over the course of a minute, they would all fall, some of them dying but some surviving with minor injuries. After this, all marine life will have perished. Humans follow soon after as the water cycle would've stopped, collapsing global infrustructure and killing every plant and person by dehydration. The end of the water cycle also leads to a runaway greenhouse effect later on.
|{{blog|103|2014|07|02}}
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|[[File:Global Snow.png|100px]]
|'''{{What If|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|Snow isn't very dense, and 1 inch of rain would lead to a foot or more of snow. Factoring in snow compressing throughout the day, you would need a mole of snowflakes to cover the Earth in 6 feet in snow.
|{{blog|104|2014|07|09}}
|{{book|2|59}}
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|[[File:Cannibalism.png|100px]]
|'''{{What If|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|If half of the world eats the other half, then it would take about 32 months before it came down to 2 people. However, this is also a very efficient way to get a {{w|Transmissible spongiform encephalopathy|prion disease}}.
|{{blog|105|2014|07|16}}
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|[[File:Ink Molecules.png|100px]]
|'''{{What If|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|You'd use about 100,000,000,000,000,000 molecules.
|{{blog|106|2014|07|23}}
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|[[File:Letter to Mom.png|100px]]
|'''{{What If|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|An ICBM would take 12-15 minutes to cross the distance. While that is the best method, a few other methods come close. The Concorde would only take 30 minutes, while firing something with a rail gun down a vacuum tube would take only 10-20 minutes.
|{{blog|107|2014|07|30}}
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|[[File:Expensive Shoebox.png|100px]]
|'''{{What If|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000. That amount of platinum would be worth $13 million, while diamonds, Adcetris and LSD would be valued around 1-2 billion,
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
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|-
|[[File:Into the Blue.png|100px]]
|'''{{What If|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Infinitely powerful laser beams do not exist, and if they did, they would vaporize the air and destroy everything like in the ''[[what if? (blog)|what if?]]'' article ''{{what if|13|Laser Pointer}}''. That being said, if it were truly random, it would be aimed at Earth 50% of the time. If you miss the Earth, 89,999 times out of 90,000, your beam will pass right out of the galaxy without hitting anything. When it does hit something, it will almost always be the Sun or the Moon.
|{{blog|109|2014|08|20}}
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|[[File:Walking New York.png|100px]]
|'''{{What If|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|Based on estimates of US Postal Service carriers and their travel times, we know that walking every street in NYC would probably take 14 years. Assuming it takes about 25 seconds to enter an apartment building, leave, and go to the next one, it would only take an additional 10 years to visit every apartment. However, under [http://ypdcrime.com/penal.law/article140.htm New York Penal Code], the punishment would take 2 million years or 2,000 millenia to finish.
|{{blog|110|2014|08|27}}
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|[[File:All the Money.png|100px]]
|'''{{What If|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|Currency only makes up a fraction of Earth's money, and it's unlikely people would agree to your sudden claims of ownership over all of the land, nor would they let you spend the actual currency you have. Said currency would quickly crush you, as most of its weight is in coinage. You could build a structure to contain the coins, but this would violate NYC building codes.
|{{blog|111|2014|09|02|1d early}}
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|{{book|25|2025|05|06|saj7b5C6TCM|What if you literally had all the money in the world?}}
|-
|[[File:Balloon Car.png|100px]]
|'''{{What If|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
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|[[File:Visit Every State.png|100px]]
|'''{{What If|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
<div align="right">—as discussed by Stephen Von Worley <span class="plainlinks">on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ '''''Data Pointed''''']</span>
|It would take you 160 hours by car, 39 hours by landing a private jet in each state, and 18 hours by F-22 fighter jet and helicopter landing in each state. However, if you relax the requirement to land in each state and simply count entering the state's airspace as "visiting" it, you can do it in around 7 hours with an SR-71 Blackbird. If we allow satellite orbits, you can do it in just over 6 hours with five orbits, assuming your satellite makes a course correction on each orbit.
|{{blog|113|2014|09|24}}
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|[[File:Antimatter.png|100px]]
|'''{{What If|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|It would wipe out all life on Earth, but surprisingly slower than you might expect. The annihilation of antimatter entering the atmosphere would add enough extra heat to create a runaway greenhouse effect and make Earth similar to Venus. We would be in much more danger from meteorites, with dinosaur-killer equivalents hitting the upper atmosphere every few months.
|{{blog|114|2014|10|01}}
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|[[File:Into the Sun.png|100px]]
|'''{{What If|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface, as the energy received by your skin would be minimal. You would maybe see a bright flash of light. The core, on the other hand, would vaporize you, as the energy delivered there would be able to give you a second-degree burn after 1 femtosecond (1 millionth of a nanosecond) in the core.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{What If|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{What If|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
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|[[File:Physical Salary.png|100px]]
|'''{{What If|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|At minimum US wage, a worker would earn about one water bottle of mixed coins per day. A CEO would earn about 600 such bottles per day, and the coins would accumulate on the floor at a rate of about 0.5 inches per day. Mark Zuckerberg would earn 25 such bottles ''per second'', and the coins would bury him if he sat still for an hour.
|{{blog|118|2014|10|30}}
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|[[File:Laser Umbrella.png|100px]]
|'''{{What If|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It's doable in theory, but the energy required to completely vaporize a raindrop (rather than merely splattering it) is high enough that your surroundings would get dangerously hot. Targeting the droplets might be possible with adaptive optics, but it would require a complicated device. You could try firing rapidly in random directions instead, but your high-powered laser might go several hundred meters without hitting a raindrop, which would endanger your local neighborhood.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{What If|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|Excerpts from ''what if?'' articles written in a world which, thankfully, is not the one we live in
|{{blog|120|2014|11|20}}
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|[[File:Frozen Rivers.png|100px]]
|'''{{What If|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
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|[[File:Lava Lamp.png|100px]]
|'''{{What If|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
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|[[File:Fairy Demographics.png|100px]]
|'''{{What If|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
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|[[File:Lunar Swimming.png|100px]]
|'''{{What If|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
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|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{What If|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|It would take two hours and 20 minutes.
|{{blog|125|2015|01|15}}
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|[[File:Stairs (What If?).png|100px]]
|'''{{What If|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|{{notice|Could be made clearer (e.g., the order we gave is: professional stair-climber→motorcycle→by foot. Seems unintuitive.)}}It would take a week or two for a professional stair-climber, or about half a day by motorcycle. If going on foot, you'd also need to carry a huge backpack stuffed with nothing but sticks of butter in order to get your daily caloric intake (including the energy expended from climbing the stairs).
|{{blog|126|2015|01|22}}
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|[[File:Tug of War.png|100px]]
|'''{{What If|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|Two teams of 25 people each would be able to rip a half-inch iron bar apart: tug-o-war is a very dangerous game, as there's so much force being exerted on the rope. The theoretical upper limit of a game is 100,000 players each, pulling a 200-mile–long rope made of graphite ribbons.
|{{blog|127|2015|01|28|1d early}}
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|[[File:Zippo Phone.png|100px]]
|'''{{What If|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
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|[[File:Black Hole Moon.png|100px]]
|'''{{What If|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|Not much would change. A black hole of the Moon's mass would be the size of a sand grain, but gravitational effects would still be more or less the same here on Earth. There would be no moonlight, which would make the Earth a bit colder and mess with some nocturnal animals. You wouldn't see any lunar eclipses due to the tiny size of the Moon. It would only cause significant problems if the Moon replacement occured while humanity was exploring the Moon.
|{{blog|129|2015|02|12}}
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|{{book|28|2025|07|08|UQgw50GQu1A|What if the moon turned into a black hole?}}
|-
|[[File:Snow Removal.png|100px]]
|'''{{What If|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|The flamethrower is more practical because microwaves don't heat ice very well. The microwave beam would require the power output of three aircraft carriers, and the flamethrower would have a gas mileage of 17 feet per gallon.
|{{blog|130|2015|02|19}}
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|{{book|26|2025|05|27|WYf9-xfm6t8|What if you used a flamethrower as a snowblower?}}
|-
|[[File:Microwaves.png|100px]]
|'''{{What If|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|The first cause of this issue is that the wave pattern of microwaves create 'dead spots' where the food isn't heated. Secondly, melted ice causes some parts to cook while the rest is still defrosting. Use a lower power level, stir your food partway through microwaving, and let it sit for a few minutes before you eat it. This allows the heat to spread evenly.
|{{blog|131|2015|02|27|1d late}}
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|[[File:Hotter than Average.png|100px]]
|'''{{What If|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|The water average is the year-round average air temperature. By saying the water is "hotter than average", they're implying the water in the pool is not tied to it. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
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|[[File:Flagpole.png|100px]]
|'''{{What If|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|It would be impossible, even a gymnast's arms would be ripped off from the force.
|{{blog|133|2015|03|17|3d late}}
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|[[File:Space Burial.png|100px]]
|'''{{What If|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|Even before you were launched, your body would dry out very quickly. In low orbit, your body would fall to Earth and be burned from atmospheric re-entry. In a higher orbit, it would be destroyed from space debris. In high orbit, you could last for a few centuries. If your body was ever found it would mean there are a lot of people travelling around: making bodies pretty common.
|{{blog|134|2015|03|28|4d late}}
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|[[File:Digging Downward.png|100px]]
|'''{{What If|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|To remove all that soil, the energy required would heat up the surrounding beyond fatal levels pretty quickly. Immune to the heat, you could survive for one to two hours, as oxygen becomes toxic at depths higher than 5 kilometers.
|{{blog|135|2015|04|05|1d late}}
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|[[File:Spiders vs. the Sun.png|100px]]
|'''{{What If|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun, by 13 orders of magnitude (the Sun is very big). But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
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|[[File:New Horizons.png|100px]]
|'''{{What If|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|This is extremely unlikely. But if it did, NASA would be on the hook to replace your car, along with most of your neighbourhood, and clean up the radioactive mess.
|{{blog|137|2015|07|14|2m 25d late}}
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|[[File:Jupiter Submarine.png|100px]]
|'''{{What If|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|No. Before it got to the point where it could float, the submarine would be crushed by the high pressure and melted by the high temperature. This is because gasses behave differently to fluids: the point where things can float is at a much higher pressure.
|{{blog|138|2015|07|28|7d late}}
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|[[File:Jupiter Descending.png|100px]]
|'''{{What If|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|There's not a whole lot to go on here; we have some data and educated guesses about what's going inside these gas giants, but we haven't sent any probes equipped with operational cameras into a gas giant so we don't really know. A book by Michael Carroll suggests that there is a layer between the upper ammonia haze and lower ammonium hydrosulfide clouds, that could provide some good views, and if so, the view would be similar to Earth's atmosphere in that clouds and fellow submarines would fade into blue.
|{{blog|139|2015|08|04}}
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|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{What If|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|There would be so much energy packed into one space that it would create a black hole as massive as the observable universe that would expand outwards at the speed of light. Because of the charge from the electrons, it would be a {{w|naked singularity}}, a black hole with infinite mass that allows light to escape.
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
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|[[File:Sunbeam.png|100px]]
|'''{{What If|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|According to Randall, parts of the atmosphere would be heated to millions of degrees, and the bubble of destruction would wrap around the Earth before it even reached the other side. The light reflected off the Moon would be hot enough to burn you to death. If the beam couldn't track the Earth, part of it would survive as the Earth orbited out of the way. If the beam reached another planetary system, it could heat up the surface of some distant exoplanets. However, this conclusion depends on the precise nature of the "bundling up". If this "bundling" is accomplished via passive optics such as lenses and mirrors, then the temperature (and geometry) of the incoming beam will be restricted according to all the optics principles described in "Fire from Moonlight", and under no circumstances would any part of Earth's atmosphere or surface exceed 5000 K, due to the laws of thermodynamics. If, however, the "bundling" consists of an "active" procedure of generating electricity via PV panels, and then powering actual laser emitters with it (not just "laser-like") - which doesn't sound like Max's conception - then yes, the narrow beam of essentially "infinite" temperature and consequent destruction that Randall describes could indeed occur.
|{{blog|141|2016|01|12|3m 18d late}}
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|[[File:Space Jetta.png|100px]]
|'''{{What If|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|The effect of the car's re-entry itself on the environment is going to be small, verging on negligible. The effect of ceasing its usage to burn hydrocarbon fuel for the remainder of the car's life is likely significantly greater than the re-entry, but in practice also negligible. The main non-negligible environmental effect might be from the launch mechanism that was used to get into orbit in the first place, although even this effect, at current rocket launch rates, is still tiny compared to global air travel or ground-based automobile usage.
|{{blog|142|2016|01|20|1d late}}
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|[[File:Europa Water Siphon.png|100px]]
|'''{{What If|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|No, at least not with a siphon. Siphons can only pull water upward to a height where the air pressure feeding water into one side of the siphon equals the weight of the water falling out the other side (creating negative pressure, trying to form a vacuum, which nature abhors). This effect requires a gravitational field and an atmosphere, but cannot be used to pump water above the local atmosphere, and hence out of the local gravity well, under any circumstances - including on Europa.
|{{blog|143|2016|01|26|1d early}}
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|[[File:Saliva Pool.png|100px]]
|'''{{What If|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|For an Olympic pool, it would take you 8,345 years. In order to finish by the present day, you'd need to start during the invention of agriculture.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
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|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{What If|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|Unfortunately, it is not possible to summarize Randall's article succinctly, because most of his explanation is completely irrelevant to the question. Randall's answer is effectively "No, and here are a set of correct principles of optics that do not support my claim." The correct answer is "Yes, just like it is possible to start a fire with sunlight reflected off anything else, because the temperature/wavelength/energy of light does not change (substantially) when it is reflected, and the temperature of visible sunlight is around 5000 to 6000 K." (The obvious assumption about the intent behind Rogier's question is that "moonlight" refers to the reflected sunlight, and not the Moon's own surface emission of longwave infrared radiation with a temperature of 300 - 400 K, which we can't see - but this should really be clarified by Rogier.)
|{{blog|145|2016|02|09}}
|{{book|2|51}}
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|-
|[[File:Stop Jupiter.png|100px]]
|'''{{What If|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|Even if we were to throw Earth at Jupiter, this could never happen, because Jupiter is much more massive than Earth. Gravity assists are like bouncing a tennis ball off a train, and to stop the train, you'd need an awfully large tennis ball. 
|{{blog|146|2016|02|16}}
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|[[File:Niagara Straw.png|100px]]
|'''{{What If|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|In order to funnel Niagara Falls through a straw, you'd need to accelerate the water to one-quarter light speed, and no machine exists that's capable of doing that. If you somehow could do it, the resulting waterjet would have the power output of a small star, and would boil away the oceans and wipe out all life on Earth.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|{{book|27|2025|06|17|pfbzrrcQZjs|What if you funneled Niagara Falls through a straw?}}
|-
|[[File:Eat the Sun.png|100px]]
|'''{{What If|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|0.000000000065%. This is such a ridiculously small portion of the Sun's heat exhaust, that we cannot increase our personal calory intake enough to compensate. Instead we need to add more persons. A lot of them in fact. So many that we need to spread them - and the food that they eat - out throughout not just our galaxy but multiple galaxies. Otherwise, the food alone would be massive enough to turn into a black hole.
|{{blog|148|2016|03|12|8d late}}
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|[[File:Pizza Bird.png|100px]]
|'''{{What If|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|After careful analysis of wing types, relative weights, and pizza grabbing mechanisms, it is deduced that even the most compatible bird - the eagle - would be hard-pressed to deliver a pizza to an airliner, the relative speed being the largest hurdle. However, delivery to a house - where the relative speed is not so much of a problem - would be possible, though the pizza might be found a slice or two short.
|{{blog|149|2016|03|26|7d late}}
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|[[File:Tatooine Rainbow.png|100px]]
|'''{{What If|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|Each sun is the source of not just one rainbow, but a whole series of rainbows of diminishing intensity; the elusive 5th order rainbow had apparently been pictured at the time of publication. A planet with two suns would consequently have two series of rainbows. A solar system arranged like Tatooine would have to be circumbinary, which limits the separation of the two rainbow series to about 20 degrees. As the main rainbow is 84 degrees across, this leads to the conclusion that the rainbows would always be overlapping.
|{{blog|150|2016|05|23|1m 21d late}}
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|[[File:Sun Bug.png|100px]]
|'''{{What If|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|30 nonillion fireflies (3 with 31 zeroes after it), which is surprisingly small on the astronomical scale. Counterintuitively, it turns out a single firefly actually glows brighter than an equivalent mass of Sun. However, there are logistical problems with organizing that many fireflies, as you need to arrange them so that they're not blocking each others' lights. You can try to simplify it by just using one very large firefly, but it would be larger than the entire Solar System and immediately collapse into the biggest black hole in the universe.
|{{blog|151|2016|07|21|1m 23d late}}
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|[[File:Flood Death Valley.png|100px]]
|'''{{What If|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|Basically, yes. But there is a lot of digging, and the end result would be quite similar to the Salton Sea which is characterized as "gross" (technical term). Also, heat world records would likely move elsewhere.
|{{blog|152|2016|10|18|2m 21d late}}
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|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|For any peptides, 19 letters is the highest possible, that being the word "interdepartmentally". For naturally existing peptides in the human body, 8 letters is the highest known. Examples of 8 letters are: GRISETTE, DATELESS, REVERSAL.
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
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|[[File:Hide the Atmosphere.png|100px]]
|'''{{What If|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
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|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{What If|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
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|[[File:Toaster vs. Freezer.png|100px]]
|'''{{What If|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—<span class="plainlinks">[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ '''My Brother, My Brother, and Me'''], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ '''Episode 343'''], discussing a </span>Yahoo Answers question</div>
|As a superior being, the Toaster casts its gaze upon lowly humans and hrumphs at their bickering about such measly temperature variations as 40C. The Toaster regularly reaches 600C and thus, to it - much like to the Fire - everything else is cold, be it room temperature or freezer temperature. Winnipeg locals have it easy and can try this for themselves, as long as they can stave of the wolves.
|{{blog|155|2017|02|28|13d late}}
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|[[File:Electrofishing for Whales.png|100px]]
|'''{{What If|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
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|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{What If|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
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|-
|[[File:Hot Banana.png|100px]]
|'''{{What If|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
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|[[File:Hailstones.png|100px]]
|'''{{What If|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|Hailstones get increasingly dangerous as they get larger, as their increased weight cancels their air resistance, allowing them to reach a higher terminal velocity while still carrying all that mass. Regular hailstones are too slow and light to be lethal, but a soccer ball-sized hailstone would hit at around 140 mph, capable of punching straight through the roof of a car or building. Fortunately, no hailstone on record has ever been that big, although storms can on occasion produce hailstones large enough to damage cars, and in rare cases even kill people.
|{{blog|159|2022|07|05|1m 30d late}}
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|''This blog article doesn't have a thumbnail.''
|'''{{What If|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|You'd need approximately a billion plus a trillion cars to pull this off. Also, in addition to destroying global ocean circulation and creating an illegal naval blockade, this is definitely a violation of her rental car agreement. Also, organizing a fleet of that many rental cars would be difficult.
|{{blog|160|2022|09|06|1m 26d late}}
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|''This blog article doesn't have a thumbnail.''
|'''{{What If|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|Given that the South pole (of Earth) points towards the Milky way centre, most of the galaxy will wind up in the air-space (space-space?) of countries of the southern hemisphere. However, due to Earth's rotation around its axis, the nadir of the galaxy core (on Earth) will constantly shift. Given that Australia is the largest of the southern countries, Australia will most often be the Rulers of the Universe. Northern hemisphere jurisdictions, such as New Jersey, will have to contend with some pretty nifty black holes and possibly murderous exoplanets.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
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|''This blog article doesn't have a thumbnail.''
|'''{{What If|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|Only if you had a magical sky-crane that could cancel the comet's initial kinetic energy during capture, then slowly lower it to the ground without converting all of its gravitational potential energy back into more kinetic energy. Converting that potential energy into electricity to substitute for existing fossil fuel power plants would reduce CO2 emissions, but the effect of that substitution on global temperatures is uncertain and likely negligible. Meanwhile, the amount of ice in a comet that could be used to cool the oceans directly is also less than one would expect from its size, since comets are not solid. Overall, the answer is effectively "no".
|{{blog|162|2022|12|06|29d late}}
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|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|Everyone would die. Then, the wind would destroy everything, with gusts blowing more than 1,000 mph (1,600 km/h) around the equator, killing 85% of the world population. The highest winds would only last a few minutes, but that would be enough to vaporise most human structures. Bunkers would be useless, because, even if your bunker were stuck to the ground hard, others would not be as strong and would hit yours at 1,000 mph. However, most of the researchers at the {{w|Amundsen–Scott South Pole Station}} would be completely fine. The wind blast would then become a heat blast with scorching temperatures and create global thunderstorms in moist areas. After a while, the Earth would gradually start to regain its rotational velocity thanks to the Moon.
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
| colspan="2" |''"Would it be possible to get your teeth to such a cold temperature that they would shatter upon drinking a hot cup of coffee?"''
<div align="right">—Shelby Hebert</div>
<div align="right"></div>
| rowspan="2" |
| rowspan="2"{{book|1|4}}
| rowspan="2" |
|-
| colspan="2" |''"How many houses are burned down in the United States every year? What would be the easiest way to increase that number by a significant amount (say, at least 15%)?"''<div align="right">—Anonymous</div>
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
*1,000 years back, you'd see many chestnut trees, wolves, and passenger pigeons.
*10,000 years back, the ground would be mostly bedrock, with large chunks of ice and dropped boulders, called glacial erratics.
*100,000 years back, several islands were pushed upwards by the ice. You would see many now-extinct species, such as Canis dirus, Smilodon fatalis, and Arctodus.
*1,000,000 years back, you'd see relatives of hyenas called Chasmaporthetes.
*1,000,000,000 years back would be no plants or animals, only single-celled organisms in the ocean.
|
|{{book|1|5}}
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|-
|
|'''Periodic Wall of the Elements'''
|''"What would happen if you made a periodic table out of cube-shaped bricks, where each brick was made of the corresponding element?"''
<div align="right">—Andy Connolly</div>
|The top two rows wouldn't be too dangerous to build, but the rest of the periodic table would seriously injure or kill you. In the sixth row, elements with short half-lives would destroy the room you were in as well as causing nuclear fallout to fall nearby. Past the sixth row, the entire city you were in would be destroyed.
|
|{{book|1|8}}
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|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
| colspan="2" |''"Would dumping anti-matter into the Chernobyl reactor when it was melting down stop the meltdown?"''
<div align="right">—AJ</div>
| rowspan="2" |
| rowspan="2"{{book|1|12}}
| rowspan="2" |
|-
| colspan="2" |''"Is it possible to cry so much you dehydrate yourself?"''<div align="right">—Karl Wildermuth</div>
|-
|
|'''The Last Human Light'''
|''"If every human somehow simply disappeared from the face of the Earth, how long would it be before the last artificial light source would go out?"''
<div align="right">—Alan</div>
|Radioactive waste that was mixed with glass will glow for centuries.
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|{{book|5|short-video=yes|2025|07|29|kNry0bf7eC0|Could this be the last surviving human light source?}}
|-
| rowspan="3" |
| rowspan="3" |'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
| colspan="2" |''"Given humanity’s current knowledge and capabilities, is it possible to build a new star?"''
<div align="right">—Jeff Gordon</div>
| rowspan="3" |
| rowspan="3"{{book|1|16}}
| rowspan="3" |
|-
| colspan="2" |''"What sort of logistic anomalies would you encounter in trying to raise an army of apes?"''<div align="right">—Kevin</div>
|-
| colspan="2" |''"If people had wheels and could fly, how would we differentiate them from airplanes?"''<div align="right">—Anonymous</div>
|-
|
|'''Orbital Submarine'''
|''"How long would a nuclear submarine last in orbit?"''
<div align="right">—Jason Lathbury</div>
|The submarine could last as long as it was in space.
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|{{book|4|short-video=yes|2025|07|22|sFTRRdHqZIQ|Why Space Is Actually Warm!}}
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
| colspan="2" |''"Would it be possible to stop a volcano eruption by placing a bomb (thermobaric or nuclear) underneath the surface?"''
<div align="right">—Tomasz Gruszka</div>
| rowspan="2" |
| rowspan="2"{{book|1|20}}
| rowspan="2" |
|-
| colspan="2" |''"A friend of mine is convinced that there is sound in space. There isn’t, right?"''<div align="right">—Aaron Smith</div>
|-
|
|'''Human Computer'''
|''"How much computing power could we achieve if the entire world population stopped whatever we are doing right now and started doing calculations? How would it compare to a modern-day computer or smartphone?"''
<div align="right">—Mateusz Knorps</div>
|The combined computing power of all devices surpassed the power of all humans in 1977.
|
|{{book|1|21}}
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|-
|
|'''Common Cold'''
|''"If everyone on the planet stayed away from each other for a couple of weeks, wouldn't the common cold virus be wiped out?"''
<div align="right">—Sarah Ewart</div>
|No, because immunocompromised individuals can harbor rhinoviruses for a long time. Only a few hosts are needed for the virus to spread again.
|
|{{book|1|25}}
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|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
| colspan="2" |''" If global warming puts us in danger through temperature rise, and super-volcanos put us into danger of global cooling, shouldn’t those two dangers balance each other out?"''
<div align="right">—Florian Seidl-Schulz</div>
| rowspan="2" |
| rowspan="2"{{book|1|27}}
| rowspan="2" |
|-
| colspan="2" |''"How fast would a human have to run in order to be cut in half at the bellybutton by a cheese-cutting wire?"''<div align="right">—Jon Merrill</div>
|-
|
|'''No More DNA'''
|''"This may be a bit gruesome, but... if someone's DNA suddenly vanished, how long would that person last?"''
<div align="right">—Nina Charest</div>
|You could live for several hours or days before succumbing to infection or systemwide organ failure.
|
|{{book|1|29}}
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|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
| colspan="2" |''"What is the total nutritional value (calories, fat, vitamins, minerals, etc.) of the average human body?"''
<div align="right">—Justin Risner</div>
| rowspan="2" |
| rowspan="2"{{book|1|31}}
| rowspan="2" |
|-
| colspan="2" |''"What temperature would a chainsaw (or other cutting implement) need to be at to instantly cauterize any injuries inflicted with it?"''<div align="right">—Sylvia Gallagher</div>
|-
|
|'''Flyover States'''
|''"Which US state is actually flown over the most?"''
<div align="right">—Jesse Ruderman</div>
|Virgina, due to a large amount of flights from Toronto to the Carribbean/South America.
|
|{{book|1|33}}
|
|-
| rowspan="3" |
| rowspan="3" |'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
| colspan="2" |''"In Thor the main character is at one point spinning his hammer so fast that he creates a strong tornado. Would this be possible in real life?"''
<div align="right">—Davor</div>
| rowspan="3" |
| rowspan="3"{{book|1|36}}
| rowspan="3" |
|-
| colspan="2" |''"If you saved a whole life’s worth of kissing and used all that suction power on one single kiss, how much suction force would that single kiss have?"''<div align="right">—Jonatan Lindström</div>
|-
| colspan="2" |''"How many nuclear missiles would have to be launched at the United States to turn it into a complete wasteland?"''<div align="right">—Anonymous</div>
|-
|
|'''Self-Fertilization'''
|''"I read about some researchers who were trying to produce sperm from bone marrow stem cells. If a woman were to have sperm cells made from her own stem cells and impregnate herself, what would be her relationship to her daughter?"''
<div align="right">—R Scott LaMorte</div>
|The resulting child would have many genetic defects, effectively being inbred.
|
|{{book|1|37}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
| colspan="2" |''"A toxin blocks the ability of the nephron tubule reabsorption but does not affect filtration. What are the possible short-term effects of this toxin?"''
<div align="right">—Mary</div>
| rowspan="2" |
| rowspan="2"{{book|1|40}}
| rowspan="2" |
|-
| colspan="2" |''"If a Venus fly trap could eat a person, about how long would it take for the human to be fully de-juiced and absorbed?"''<div align="right">—Jonathan Wang</div>
|-
|
|'''Lost Immortals'''
|''"If two immortal people were placed on opposite sides of an uninhabited Earthlike planet, how long would it take them to find each other? 100,000 years? 1,000,000 years? 100,000,000,000 years?"''
<div align="right">—Ethan Lake</div>
|Depending on strategy and terrain, a few years to a few decades.
|
|{{book|1|42}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
| colspan="2" |''"Could you survive a tidal wave by submerging yourself in an in-ground pool?"''
<div align="right">—Chris Muska</div>
| rowspan="2" |
| rowspan="2"{{book|1|46}}
| rowspan="2" |
|-
| colspan="2" |''"If you are in free fall and your parachute fails, but you have a Slinky with extremely convenient mass, tension, etc., would it be''
possible to save yourself by throwing the Slinky upward while holding on to one end of it?"<div align="right">—Varadarajan Srinivasan</div>
|-
|
|'''Sparta'''
|''"In the movie 300 they shoot arrows up into the sky and they seemingly blot out the sun. Is this possible, and how many arrows would it take?"''
<div align="right">—Anna Newell</div>
|300 arrows per second with densely packed archers could blot out 99% of the Sun's light. If the Sun were low in the horizon, you could more effectively block sunlight with less arrows.
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|''"How many Lego bricks would it take to build a bridge capable of carrying traffic from London to New York? Have that many Lego bricks been manufactured?"''
<div align="right">—Jerry Petersen</div>
|Enough bricks have been manufactured to connect London and New York, but the bridge would not be structurally sound enough to stay together for very long.
|
|{{book|1|51}}
|
|-
| rowspan="3" |
| rowspan="3" |'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
| colspan="2" |''"What is the probability that if I am stabbed by a knife in my torso that it won’t hit anything vital and I’ll live?"''
<div align="right">—Thomas</div>
| rowspan="3" |
| rowspan="3"{{book|1|54}}
| rowspan="3" |
|-
| colspan="2" |''"If I were on a motorbike and do a jump off a quarter pipe ramp, how fast would I need to be moving to safely deploy and land using the parachute?"''<div align="right">—Anonymous</div>
|-
| colspan="2" |''"What if every day, every human had a 1 percent chance of being turned into a turkey, and every turkey had a 1 percent chance of''
being turned into a human?"<div align="right">—Kenneth</div>
|-
|
|'''Weightless Arrow'''
|''"Assuming a zero-gravity environment with an atmosphere identical to Earth's, how long would it take the friction of air to stop an arrow fired from a bow? Would it eventually come to a standstill and hover in midair?"''
<div align="right">—Mark Estano</div>
|It would stop at about 5 to 10 kilometers.
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|''"If all the lightning strikes happening in the world on any given day all happened in the same place at once, what would happen to that place?"''
<div align="right">—Trevor Jones</div>
|It would create a crater the size of a basketball court.
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|{{book|3|short-video=yes|2025|07|15|_efsqO-4OoQ|Could We Harvest Power From Lightning?}}
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
| colspan="2" |''"What if everyone in Great Britain went to one of the coasts and started paddling? Could they move the island at all?"''
<div align="right">—Ellen Eubanks</div>
| rowspan="2" |
| rowspan="2"{{book|1|64}}
| rowspan="2" |
|-
| colspan="2" |''"Are fire tornadoes possible?"''<div align="right">—Seth Wishman</div>
|-
|
|'''Neutron Bullet'''
|''"If a bullet with the density of a neutron star were fired from a handgun (ignoring the how) at the Earth's surface, would the Earth be destroyed?"''
<div align="right">—Charlotte Ainsworth</div>
|No. The bullet would fall through the ground and stop in the center of the Earth.
|
|{{book|1|67}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
| colspan="2" |''"What if I swallow a tick that has Lyme disease? Will my stomach acid kill the tick and the borreliosis, or would I get Lyme disease from the inside out?"''
<div align="right">—Christopher Vogel</div>
| rowspan="2" |
| rowspan="2"{{book|1|68}}
| rowspan="2" |
|-
| colspan="2" |''"Assuming a relatively uniform resonant frequency in a passenger jet, how many cats, meowing at what resonant frequency of said jet, would be required to "bring it down"?"<div align="right">—Brittany</div>
|-
| rowspan="3" |
| rowspan="3" |'''Richter 15'''
| rowspan="3" |''"What if a Richter magnitude 15 earthquake were to hit America at, let's say, New York City? What about a Richter 20? 25?"''
<div align="right">—Alec Farid</div>
| rowspan="3" |A magnitude 15 earthquake would destroy the Earth.
| rowspan="3" |
| rowspan="3" {{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|{{book|1|short-video=yes|2025|06|24|wBLVmEZV2Oc|How high could the magnitude of Earthquakes go?}}
|-
|{{book|2|short-video=yes|2025|07|01|FKXVs4UteSc|Is there such a thing as a magnitude 0 earthquake?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|First off, a human can't do this. Assuming a normal crash rate, an average human driver wouldn't make it past Mars without crashing. Even truck drivers, a field where the crash rate is much lower, wouldn't make it past Jupiter. Using a self-driving car, however, would negate this. It would take an incredibly long time, on the order of approximately 480 quadrillion years if you're driving at a steady pace of 65 miles per hour. Assuming you want to keep your car functional, you would go through 30 quintillion oil changes. Assuming a reasonable 33 MPG highway mileage, the amount of gasoline needed would be similar to the Moon in size. You would also need 10^17 tons of snacks. Entertainment would be another issue. If every person who has ever lived had 150 friends/acquaintances, listening to a real-time podcast of someone's life, all from the perspective of a different friend/acquaintance, you would need to re-watch them all 150 times to make it to the edge of the observable universe. Once you get there, there would be no Earth to come back to.
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|The optimal method for using the least amount of pigeons would be to use a multi-stage system of sorts. A group of pigeons would lift you about 10 feet, before dropping you as another group swoops in to take their place. However, even with this system, the number of pigeons would be large enough that the Earth would be pulled into the pigeons by gravity instead of the other way around. In other words, if you want to get to the top of Australia's Q1 skyscraper, use an elevator.
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die Having-no-Blood-and-Being-Full-of-Molten-Uranium Syndrome. Also known as Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical. The temperature to turn oxygen solid is very low, and even with proper insulation it would still cause frostbite. It would also be very weak and very soft, and would sublimate quickly, basically making it useless for all intensive purposes, except for PR.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We would see a balloon slowly flying away, fading into the sky. It would be quite pretty. Though next time we should probably attach a transmitter.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|If you positioned yourself in just the right way, and used an umbrella to catch as much lift as possible, you could be launched hundreds of feet in the air. Unsurprisingly, you'd receive severe burns and almost certainly die. Surprisingly, however, you would be far from the first person to get severe burns from the geysers.
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|<big><big>{{notice2|'''Most of these are too short!'''}}</big></big> <big><big>{{notice|'''If you own the second book, please help us by explaining more!'''}}</big></big> Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass. However, due to the increase in density in the mantle, you would actually gain weight until you've removed about half the Earth's diameter. An image of what it would look like is shown in [[2575: What If? 2]], where a potato peeler is used to remove the crust of the Earth.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|Assuming density stayed the same when you shrunk Jupiter down, the biggest issue would be that the gravity that keeps its hot interior together would no longer exist, essentially creating a giant fireball that would turn into a mushroom cloud, and eventually spread out into a big cool cloud. This would, effectively, be the reverse of the formation of Jupiter, which started as clouds before being compressed into a small hot ball.
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|It's not a completely ridiculous idea, but the most practical issue is that you'd have to extend the roughly mile-long runway several times more to take full advantage of it. Using the proposed rope-and-cliff system, you'd need to use a thousand ton weight dropped at the height of a super tall skyscraper - of course, if you used something heavier, like the 80,000-ton Washington Monument, you wouldn't need to drop it as far.
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|Theoretically, in a section of Yellowstone National Park, where {{w|Zone of Death (Yellowstone)|a jury would have to be formed from a non-existent population}}. In practice, you'd definitely still be prosecuted for committing a murder there.
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|Even though the meteor is slow, it's still very big. The impactor would not create a crater, but would instead create a weird effect which makes the rock flow like water, creating a large 'space dirt pancake' about the same diameter as the Chicxulub impact Crater. If {{w|Jurassic Park}} were a real place, it could certainly cause a dinosaur extinction over there, if dropped on it.
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|Earth would (mostly) be fine. Mercury, uranium, neptunium, plutonium, and cerium would all replace the old planets. Changes are as follows:
*Pluto would be visible to the naked eye
*Ceres would be visible to the naked eye
*Mercury would be visible to the naked eye
*Uranus would be a fairly bight star
*''When Neptune hits your eye, like a big pizza pie, that's an x-ray..''
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|An average tire sheds about 1.6 liters of rubber over the course of its lifetime (from new to bald). If all tire rubber stuck to the road, it would rise by about a third of a millimeter per year. However, most tire rubber shavings are small enough to drift through the air, or for rain and wind to wash them off the road. Tire rubber is more than enough to cause environmental disruption and it's one of the leading causes of microplastics in our oceans.
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain? Also, Colorado has a lot of people in it.
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No, as the leading theory is that Jupiter has a solid core. Shooting a bullet through the center would simply cause the bullet to collide with the core of the planet.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
| While the match would light initially due to the small amount of oxidizer in a matchhead (typically {{w|potassium chlorate}}, in a safety match), it would quickly dissipate due to the lack of oxygen to titan's atmosphere.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|It would work, but the water level would slowly lower back to sea level over time. However, this process can be accelerated by whale farts. I am not joking.
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|Its 'resolution' would be over 500 million times better than a normal human eye. It would be able to see the color of a shirt worn on Mars. It could also see incredibly far objects, such as some of the most distant galaxies that haven't been {{w|redshift}}ed to the point of being infrared. However, a planet-sized eye would be inconvenient, as it would certainly go blind from the Sun and could be damaged from nearby stars as well.
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|You would likely see many new and undiscovered species. You would also be incredibly cold as the freezing waters of the deep would cool the glass. Getting up would be another problem entirely. If you didn't use an elevator, you could break the glass. That would create a geyser, accelerating you upwards at lethal G-forces. Once you reach the surface, you would fly high into the air before crashing back down into the ocean. Also, you would be heralded as a hero by a lot of marine biologists.
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine. While one may picture a scenario similar to ''The Core'', the difference would only be noticed long after you're gone, so you don't really need to worry about it :)
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature. Also, do you automatically add 'in a vacuum' to anything your son says?
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche. Since the peak of {{w|Mount Everest}} is above the clouds, it is very dry there. For a snowball to grow, wet snow is required. The result would be similar to rolling a hamburger down.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|{{w|Ammonia}} is an {{w|EPA list of extremely hazardous substances|extremely hazardous substance}} and pumping it into your abdomen would result in a painful death due to ammonia toxicity. However, at the very least, some of it would be neutralized with your stomach acid.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occurred to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Elizabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|Due to the free hydrogen molecules floating around in there, it would taste incredibly sour. It would also smell like burning rubber, as stars are made up of the same components.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|This is unrealistic right from the start. This assumes the total dog population is 2 billion, which is well above current estimates. A timeline of major events and milestones is listed below.
*After one year, there are enough dogs for everyone to have at least one.
*After 5 years, every human has an average of 6 or 7 dogs.
*After 11 years, Disney releases ''101 Dalmations per Capita'', after there are 101 dogs per person
*After 15 years, the first dogs die, but the death is fully insignificant.
*After 20 years, dogs would only be about 1 meter apart on average.
*After 25-30 years, the dogs begin to stack.
*At about 40 years, the exponential growth is "stable". The population is multiplying by about 1.6578 each year.
*After 65 years, the population of dogs reaches 1 mol
*After 110 years, the dogs start to undergo relativistic collapse
*After 150 years, the dogs are bigger than the solar system.
*After 197 years, the expansion of the dog sphere surpasses 1''c''
*After 200 years, the dogs reach sirius.
*After 250 years, the dogs envelop the milky way.
*After 330 years, the dogs reach the edge of the observable universe.
*After 417 years, Disney releases ''10<sup>101</sup> Dalmations.''
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen. Despite its name, sunscreen only protects against some types of radiation from the Sun. No amount is going to be adequate protection if you are right inside the Sun. Also, sunscreen, being a gel, would evaporate when exposed to vacuum. When exposed to the plasma of the coronal surface or the Sun's interior, it would quickly ionize along with anything inside it, becoming plasma like the rest of the Sun.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|The Sun will cool to room temperature in about 20 billion years. However, survival would not be an option.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
| This is a continuation of {{what if|13|13: Laser Pointer}}. Adding even more power than the end of that article would heat the air so much that the lasers would stop themselves long before reaching the Moon. Even if we managed to get them to hit the Moon, the plasma created would be so hot that it would stop anyway.
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}<noinclude>

<span id="Editors"><big><big>'''Editors'''</big></big></span> ㅤ ''[[#Article index|(jump back to table)]]''

These templates are used in this table: {{tl|what if}}, {{tl|What If}}, {{tl|book}}, {{tl|blog}}.

<big>'''Add YouTube video'''</big>

<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

<big>'''Add book chapter'''</big>

For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}
<big>'''Link to a ''what if?'' article'''</big>

On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

<big>'''Add name of reader who asked the question.'''</big>

Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

''[[#Article index|(jump back to table)]]''
<span id="bottom"></span>
{| style="border: 1px solid {{{border|gray}}}; background-color: {{{color|#fdffe7}}};"
|rowspan="2" style="vertical-align:middle;" | {{{{{|safesubst:}}}#ifeq:{{{2}}}|alt|[[File:What If Barnstar.jpeg|100px]]|[[File:What If Barnstar.jpeg|100px]]}}
|rowspan="2" |
|style="font-size: x-large; padding: 0; vertical-align: middle; height: 1.1em;" | '''The What If? Project Barnstar'''
|-
|style="vertical-align: middle; border-top: 1px solid gray;" | <div style="font-family: Cormorant Garamond"><span style="font-size:5pt;color:black">

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted!

----

Great Job to everyone who helped out on this project! If you helped out explain the articles or build the table, feel free to sign here: '''[[User:42.book.addict|<span style="font-family:Cormorant Garamond;font-size:9pt;color:#A9C6CA">42.book.addict</span>]]<sup>[[User talk:42.book.addict|<span style="font-family:Cormorant Garamond;font-size:6pt;color:#516874">Talk to me!</span>]]</sup>''' 17:44, 14 February 2025 (UTC), [[User:WriterArtistCoder|WriterArtistCoder]]<sup>[[User talk:WriterArtistCoder|talk to me]]</sup> 21:56, 11 March 2025 (UTC), [[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 15:53, 12 March 2025 (UTC) --'''''[[User:DollarStoreBa'al |<span style="font-family:Atomic Age;font-size:12pt;color:red;">DollarStoreBa'al</span>]]<sup>[[User talk:DollarStoreBa'al |'''''Converse''''']]</sup>[[DSBContribs |'''''My life choices''''']] 23:30, 14 June 2025 (UTC)

[[Category:What If?| 9]]{{xkcdmeta}}

1298: Exoplanet Neighborhood

2025-08-11T05:55:49Z

WriterArtistCoder: Explained archival stuff in Trivia, resolving incomplete expl

{{comic
| number = 1298
| date = December 2, 2013
| title = Exoplanet Neighborhood
| image = exoplanet_neighborhood.png
| titletext = It's a beautiful day in the neighborhood!
}}
The comic image links to a larger version of the comic, at [http://xkcd.com/1298/large/ http://xkcd.com/1298/large/].

==Explanation==
The diagram is a graphical representation of the statistically predicted distribution of nearby exoplanets (planets not in our solar system), based on the assumption that the exoplanets that are currently known have a distribution of orbits, sizes, and star types that is similar to the actual distribution. Astronomers are particularly interested in exoplanets within 60 light years of Earth which lie in a {{w|Circumstellar habitable zone|habitable zone}}; that is, a planet whose orbit is within a certain range of distance from a star such that water could exist in a liquid state.

Since almost all life on Earth (which is the only place we've actually found life thus far) depends on liquid water in some way, these planets are considered the most likely to support life. The diagram categorizes exoplanets in two ways. The disc color indicates the characteristics of the central star, with a <span style="color: #880000;">'''reddish'''</span> tone indicating hypothetical planets that orbit stars similar in characteristics to our sun, while <span style="color: #606060;">'''grey'''</span> indicates those that orbit stars unlike our sun. The disc sizes indicates the hypothetical size of the exoplanets, with planets similar to Earth's size depicted in a slightly darker shade of either color. Because the discs represent a distribution, their positioning within the diagram is irrelevant; the spacing around the title and the Earth is an artistic choice. It appears that the diagram is intended to cause the viewer to conclude that there are a significant number of Earth-sized planets orbiting Sun-type stars which could be habitable, and even more possibly-habitable planets around other types of stars or in other sizes.

The title text is an allusion to the former PBS television show {{w|Mister Rogers' Neighborhood}} in which the same line presents itself in the opening song, {{w|Mister Rogers' Neighborhood#Regular songs|"Won't You Be My Neighbor?"}}. Randall has commented on the results of exoplanet research before, in [[786: Exoplanets]] and [[1071: Exoplanets]].

==Transcript==
:'''OUR NEIGHBORHOOD'''
:A portrait of all habitable-zone planets within 60 light-years of Earth (constructed from statistical data on typical planet sizes and orbits)

:[The image shows many planets in different colors and a legend shows planets at different sizes.]
:Planets around sun-like stars
:Planets around other stars
:[A marker on both sides:]
:Earth-sized planets

:[Center of the image.]
:Earth

==Trivia==
*[https://web.archive.org/web/20131202102819/http://xkcd.com/1298/ Upon publication, the comic's title was "It's a beautiful day in the neighborhood!", the title text was "http://xkcd.com/1298/large/", and the image was not a link. This appears to have been an error, as [https://web.archive.org/web/20131204044458/http://xkcd.com/1298/ two days later] the title was changed to "Exoplanet Neighborhood", the title text was changed to the old title, and the image was linked to the URL in the old title text.
*This comic used to be [https://web.archive.org/web/20211215045733/https://store.xkcd.com/products/exoplanet-neighborhood-poster available as a poster] in the xkcd store before it was [[Store|shut down]].

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Astronomy]]
[[Category:Large drawings]]
[[Category:Exoplanets]]
[[Category:Comics with xkcd store products]]
[[Category:Comics edited after their publication]]

1863: Screenshots

2025-07-21T04:07:59Z

WriterArtistCoder: /* Explanation */ Edit first paragraphs

{{distinguish|1373: Screenshot|common=Screenshot02}}
{{comic
| number = 1863
| date = July 14, 2017
| title = Screenshots
| image = screenshots.png
| titletext = For the final exam, you take a screenshot showing off all the work you've done in the class, and it has to survive being uploaded, thumbnailed, and re-screenshotted through a chain of social media sites.
}}

==Explanation==
The comic shows a syllabus of an introductory course on {{w|Screenshot|screenshots}}, covering best practices and privacy or ethical considerations. Screenshots have become a common way of spreading and sharing content on social media like Tumblr and Twitter, particularly excerpts of text such as seen in the cartoon.

The image on the left shows an image of screenshots of text, along with what seems like annotations describing various ratios and dos and don'ts about making such screenshots. The right side shows the main points of the course. Some of these guidelines are violated on a regular basis by people sharing screenshots on the internet, leading to impaired readability and the degradation of digital quality (see [[1683: Digital Data]]).

The punchline is that depsite high attendance of lectures, the course's digital textbook only sold one copy, implying that the only attendee that bought the book used its teachings to distribute screenshots of the content to the others. In essence, the writer of the textbook has taught their students how to pirate their material, effectively putting themselves out of a job. This is an example of the {{w|Analog hole|analog hole}}: if non-interactive media can be visually seen by humans, it can be copied, as with a screenshot.

Detailed explanation of the headings on the right:

;Highlighting: What & How much?
:This refers to highlighting text of particular interest in screenshots, as depicted on the left.

;Aspect ratios
:Again, depicted on the left. If a screenshot is too wide, it might be difficult to read, and/or it will not fit into thumbnails and social networking feeds. This leads to the screenshot being scaled down too much to be readable (see bottom left). An {{w|aspect ratio}} that is too tall would have similar effects, so in general it is better to stick to near-square aspect ratios (see bottom right of the left section). Some users change the aspect ratio when scaling with a very ugly result (see e.g. [[1187: Aspect Ratio]]).

;Cropping: Pre- and Post-
:This refers to {{w|cropping}} the image, that is, cutting away the irrelevant or unnecessary parts, leaving just the content one needs to communicate. Pre- and Post- refers to when the cropping is done, either before the screenshot (i.e. framing the shot) or cropping the screenshot after it has been taken (i.e. fine tuning it in a photo editing program).

;Whitespace
:{{w|White space (visual arts)|Whitespace}} refers to the space around the content of interest, which is often but not always white. Removing whitespace makes an image more efficient and helps provide focus , but too little whitespace can be less comfortable to read or look at. In the top image next to the syllabus, some of the red marks are indicating whitespace.

;Screenshots vs Links
:For the most part it is recommended that one links to the original content, rather than publishing a screenshot of said content. In some situations it is advisable to opt for using screenshots, such as if the content in question has been removed from the original source, and one still wants to communicate the fact that it was published there. Additionally, a screenshot is easier to catch people's attention with, as it doesn't require them to take any actions to view.

;Catching the right GIF frame
:A {{w|GIF}} is a bitmap image format that was developed in 1987 by CompuServe and has since come into widespread usage on the World Wide Web due to its wide support and portability. The format supports animations and is often used for short looping animations on the internet. They often employ a low {{w|frame rate}}, so that one might notice a funny or interesting frame during playback. The naïve approach is to press the 'Print Screen' button with careful timing, but in this manner it can be very challenging to capture the desired frame of any GIF that plays at a speed of greater than 5 frames per second. Presumably, the course introduces its students to special tools to get the job done, such as [https://ezgif.com/speed the EZgif website] or the [http://www.xtreme-lab.net/7gif/en/index.html downloadable 7GIF app].

;Snapchat and trust
:{{w|Snapchat}} is a popular social networking application for mobile devices primarily used for sharing images and short videos. One of the main selling points is the transience of content posted. The idea is that as soon as one opens an image or video, a timer starts, and once it has expired the content is no longer accessible on the device. This has led to people sending sensitive content to their friends, thinking that they wouldn't be able to cause much harm, as the content is non-permanent. An obvious flaw in this model is the capability of modern mobile devices to take screenshots (usually available from shortcut keys), and thus permanently save the images to the phone's memory. Saving embarrassing images of one's friends, that they themselves meant as a transient joke, is a serious breach of trust, hence the heading.

;Embarrassing background tabs
:A common error when publishing screenshots is not being careful, and leaving content visible that might be embarrassing. For instance, a {{w|browser tab}} open in the background might show content that is embarrassing or private information, such as a page about a sensitive disease one may have (e.g. {{w|AIDS}}) or {{w|pornography}}. It is easy to miss this when checking, which leads to situations such as [http://www.foxnews.com/politics/2017/06/10/lawmaker-mistakenly-hands-out-document-with-porn-references.html this one], where a politician handed out a document with background tabs to pornography websites.

;Spellcheck's red underlines
:{{w|Spell checkers}} are designed to notify the writer of a document of spelling and grammatical mistakes in the text. This is usually done through the editor marking text it thinks is incorrect with an underline (usually red, but other colors may indicate different kinds of mistakes). Sometimes these mistakes are not relevant to the writer, such as when editing {{w|source code}} or using a spellchecker that is set to another language. Even if the corrections are relevant, however, one would not want the ugly red underlines on a screenshot. This section presumably deals with this problem.

;Security: Beware of URL tokens
:{{w|Query string|URL tokens}} are pieces of code embedded in the {{w|URL}} of a website. If implemented well, these help identify a particular document or search query, and do not carry any sensitive security information. Insecure web-apps, however, may encode authentication information (such as {{w|Session_ID|session IDs}}, or even worse: usernames and passwords) in the URL, leading to a massive security risk on the part of someone whose screen might be visible to others. Screenshots allow anyone to easily read off these parameters, and possibly successfully impersonate the creator of the screenshot on a website. This is especially hard to notice to less technically inclined users, who might not know that, say, a session ID (a seemingly random jumble of characters), might be used to impersonate them.

;Redacting personal info
:Somewhat related to the previous point: Screenshots might include personal information, such as indications of institutions one might work for, e-mail addresses, and the like, that one might not want to share with the world. This section presumably deals with ways of obscuring such information on screenshots.

;Useful browser modes
:Using the {{w|Privacy mode|private browsing mode}} offered by most browsers helps with the previous point of keeping your personal information out of the screenshots because websites see you as logged out. Another helpful mode is the full screen browsing mode (usually F11) that will maximize the content to cover the whole screen, keeping the browser UI out of the screenshots. This also helps with privacy, as it will keep the bookmarks on your browser toolbar from being visible, as well as your username if you're logged in Chrome, without having to crop the screenshots manually. Counterpointing with the final bullet on spotting fakes, the Inspect Element browser mode allows you to live-edit the HTML source of the webpage, allowing you to create more convincing fakes if that is your goal.

;Tradeoffs: PNG vs JPG
:{{w|Portable Network Graphics|PNG}} and {{w|JPG}} are file formats with different {{w|image compression|image compression algorithms}}. JPG is widely used for encoding photographs, as it compresses real-world images to a fraction of their normal size without losing much quality. On artificial images with lots of sharp changes in contrast (such as text), however, JPG produces visible {{w|compression artifacts}} due to its {{w|lossy compression}}. For these, PNG is usually used, as it compresses large blocks of a single color, and repeating patterns efficiently, and due to it having a lossless option is able to encode text without artifacts, improving readability. PNG is usually superior for screenshots, as these are artificial images, but if the screenshot is of an actual photo (or a frame of a GIF or movie), JPG might yield lower file sizes at comparable quality. This tradeoff is presumably discussed under the heading.
:JPG images also have an attached {{w|EXIF}} data file, not present in PNG images, which may contain information about the device that the screenshot was taken on (especially "with", e.g. a camera) and thus be a potential privacy risk in some cases. However, EXIF metadata is not used with JPEG 2000. However, PNG can contain a transparency layer, allowing the object in the image to exist without a background.

;Watermark ethics
:Many users and websites add {{w|watermarks}} to their original content (or even worse: their screenshots) to indicate where it came from. As depicted in [[1683: Digital Data]] this can lead to degradation of quality as watermarks are stacked on top of each other. It is generally considered okay to put a single unobtrusive watermark on one's own original work; anything other than that would be considered unethical.

;Spotting fakes
:It is relatively easy to fake a screenshot in an image editing program such as {{w|GIMP}} or just editing the page source, making it seem like another organization or person is the original source of the content, possibly damaging their reputation. Some of these techniques are easily detectable by looking at the image's {{w|metadata}} or correlating the contents of the screenshot with other sources.

The title text once again refers to the continual re-screenshotting of data as seen in [[1683: Digital Data]], where the final examination consists of the students taking a screenshot good enough that it is still recognizable (and hopefully readable) after being re-compressed, re-screenshoted and re-uploaded to various social networking sites, deteriorating its quality. This is quite a difficult task, as the student only has control over the first screenshot, and subsequent screenshots could degrade the quality to any level. Hopefully the professor is aware of this and plans to perform the test under controlled conditions, as well as grade on a curve.

Screenshots were previously explored by Randall in [[1373: Screenshot]], [[1683: Digital Data]] and [[1815: Flag]].

==Transcript==
:<big>Intro to Screenshots</big>

:[The left side of the panel shows three images. The largest image is a screenshot of text with the middle section highlighted and margins and top and bottom rows marked with red lines and arrows. The two smaller images below are cropped versions of the screenshot in the first image: the left image has an incorrect "squashed" aspect ratio and a red X on it, while the right image has a correct aspect ratio and a green check mark.]

:[The right side of the panel:]

::<u>Syllabus</u>
:*Highlighting: What & how much
:*Aspect ratios
:*Cropping: Pre- and post-
:*Whitespace
:*Screenshots vs links
:*Catching the right GIF frame
:*Snapchat and trust
:*Embarrassing background tabs
:*Spellcheck's red outlines
:*Security: Beware URL tokens
:*Redacting personal info
:*Useful browser modes
:*Tradeoffs: PNG vs JPG
:*Watermark ethics
:*Spotting fakes

:[Caption below the panel:]
:My class on screenshots was a big hit, although for some reason I only ever sold one copy of the digital textbook.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Computers]]

1863: Screenshots

2025-07-20T22:24:48Z

WriterArtistCoder: /* Explanation */ What whitespace refers to

{{distinguish|1373: Screenshot|common=Screenshot02}}
{{comic
| number = 1863
| date = July 14, 2017
| title = Screenshots
| image = screenshots.png
| titletext = For the final exam, you take a screenshot showing off all the work you've done in the class, and it has to survive being uploaded, thumbnailed, and re-screenshotted through a chain of social media sites.
}}

==Explanation==
The comic shows a syllabus of an introductory course on {{w|Screenshot|screenshots}}. Screenshots have become a common way of spreading and sharing content on social media like Tumblr and Twitter, particularly excerpts of text such as seen in the cartoon. This in turn has developed into a common language with unwritten rules; the comic imagines a world where such rules have become codified into best practices, able to be taught in classes.

The image on the left shows an image of screenshots of text, along with what seems like annotations describing various ratios and dos and don'ts about making such screenshots. The right side shows the main points of the course, touching on topics that are relevant for making and publishing screenshots. Some of these guidelines are violated on a regular basis by people sharing screenshots on the internet, leading to impaired readability and the degradation of digital quality (see [[1683: Digital Data]]).

The punchline of the comic describes a high attendance in the course (presumably many people are interested in how to take high-quality screenshots); however, the digital textbook only sold one copy, implying that the only attendee that bought the book was adept enough to distribute screenshots of the textbook content to the others, because of the information gathered from the class itself. In essence, the writer of the textbook has taught their students how to pirate their material, effectively putting themselves out of a job. There isn't anything that the author can do to prevent this due to the {{w|Analog hole|analog hole}}, which states that if non-interactive media can be visually seen by humans, it can be copied, as with a screenshot.

Detailed explanation of the headings on the right:

;Highlighting: What & How much?
:This refers to highlighting text of particular interest in screenshots, as depicted on the left.

;Aspect ratios
:Again, depicted on the left. If a screenshot is too wide, it might be difficult to read, and/or it will not fit into thumbnails and social networking feeds. This leads to the screenshot being scaled down too much to be readable (see bottom left). An {{w|aspect ratio}} that is too tall would have similar effects, so in general it is better to stick to near-square aspect ratios (see bottom right of the left section). Some users change the aspect ratio when scaling with a very ugly result (see e.g. [[1187: Aspect Ratio]]).

;Cropping: Pre- and Post-
:This refers to {{w|cropping}} the image, that is, cutting away the irrelevant or unnecessary parts, leaving just the content one needs to communicate. Pre- and Post- refers to when the cropping is done, either before the screenshot (i.e. framing the shot) or cropping the screenshot after it has been taken (i.e. fine tuning it in a photo editing program).

;Whitespace
:{{w|White space (visual arts)|Whitespace}} refers to the space around the content of interest, which is often but not always white. Removing whitespace makes an image more efficient and helps provide focus , but too little whitespace can be less comfortable to read or look at. In the top image next to the syllabus, some of the red marks are indicating whitespace.

;Screenshots vs Links
:For the most part it is recommended that one links to the original content, rather than publishing a screenshot of said content. In some situations it is advisable to opt for using screenshots, such as if the content in question has been removed from the original source, and one still wants to communicate the fact that it was published there. Additionally, a screenshot is easier to catch people's attention with, as it doesn't require them to take any actions to view.

;Catching the right GIF frame
:A {{w|GIF}} is a bitmap image format that was developed in 1987 by CompuServe and has since come into widespread usage on the World Wide Web due to its wide support and portability. The format supports animations and is often used for short looping animations on the internet. They often employ a low {{w|frame rate}}, so that one might notice a funny or interesting frame during playback. The naïve approach is to press the 'Print Screen' button with careful timing, but in this manner it can be very challenging to capture the desired frame of any GIF that plays at a speed of greater than 5 frames per second. Presumably, the course introduces its students to special tools to get the job done, such as [https://ezgif.com/speed the EZgif website] or the [http://www.xtreme-lab.net/7gif/en/index.html downloadable 7GIF app].

;Snapchat and trust
:{{w|Snapchat}} is a popular social networking application for mobile devices primarily used for sharing images and short videos. One of the main selling points is the transience of content posted. The idea is that as soon as one opens an image or video, a timer starts, and once it has expired the content is no longer accessible on the device. This has led to people sending sensitive content to their friends, thinking that they wouldn't be able to cause much harm, as the content is non-permanent. An obvious flaw in this model is the capability of modern mobile devices to take screenshots (usually available from shortcut keys), and thus permanently save the images to the phone's memory. Saving embarrassing images of one's friends, that they themselves meant as a transient joke, is a serious breach of trust, hence the heading.

;Embarrassing background tabs
:A common error when publishing screenshots is not being careful, and leaving content visible that might be embarrassing. For instance, a {{w|browser tab}} open in the background might show content that is embarrassing or private information, such as a page about a sensitive disease one may have (e.g. {{w|AIDS}}) or {{w|pornography}}. It is easy to miss this when checking, which leads to situations such as [http://www.foxnews.com/politics/2017/06/10/lawmaker-mistakenly-hands-out-document-with-porn-references.html this one], where a politician handed out a document with background tabs to pornography websites.

;Spellcheck's red underlines
:{{w|Spell checkers}} are designed to notify the writer of a document of spelling and grammatical mistakes in the text. This is usually done through the editor marking text it thinks is incorrect with an underline (usually red, but other colors may indicate different kinds of mistakes). Sometimes these mistakes are not relevant to the writer, such as when editing {{w|source code}} or using a spellchecker that is set to another language. Even if the corrections are relevant, however, one would not want the ugly red underlines on a screenshot. This section presumably deals with this problem.

;Security: Beware of URL tokens
:{{w|Query string|URL tokens}} are pieces of code embedded in the {{w|URL}} of a website. If implemented well, these help identify a particular document or search query, and do not carry any sensitive security information. Insecure web-apps, however, may encode authentication information (such as {{w|Session_ID|session IDs}}, or even worse: usernames and passwords) in the URL, leading to a massive security risk on the part of someone whose screen might be visible to others. Screenshots allow anyone to easily read off these parameters, and possibly successfully impersonate the creator of the screenshot on a website. This is especially hard to notice to less technically inclined users, who might not know that, say, a session ID (a seemingly random jumble of characters), might be used to impersonate them.

;Redacting personal info
:Somewhat related to the previous point: Screenshots might include personal information, such as indications of institutions one might work for, e-mail addresses, and the like, that one might not want to share with the world. This section presumably deals with ways of obscuring such information on screenshots.

;Useful browser modes
:Using the {{w|Privacy mode|private browsing mode}} offered by most browsers helps with the previous point of keeping your personal information out of the screenshots because websites see you as logged out. Another helpful mode is the full screen browsing mode (usually F11) that will maximize the content to cover the whole screen, keeping the browser UI out of the screenshots. This also helps with privacy, as it will keep the bookmarks on your browser toolbar from being visible, as well as your username if you're logged in Chrome, without having to crop the screenshots manually. Counterpointing with the final bullet on spotting fakes, the Inspect Element browser mode allows you to live-edit the HTML source of the webpage, allowing you to create more convincing fakes if that is your goal.

;Tradeoffs: PNG vs JPG
:{{w|Portable Network Graphics|PNG}} and {{w|JPG}} are file formats with different {{w|image compression|image compression algorithms}}. JPG is widely used for encoding photographs, as it compresses real-world images to a fraction of their normal size without losing much quality. On artificial images with lots of sharp changes in contrast (such as text), however, JPG produces visible {{w|compression artifacts}} due to its {{w|lossy compression}}. For these, PNG is usually used, as it compresses large blocks of a single color, and repeating patterns efficiently, and due to it having a lossless option is able to encode text without artifacts, improving readability. PNG is usually superior for screenshots, as these are artificial images, but if the screenshot is of an actual photo (or a frame of a GIF or movie), JPG might yield lower file sizes at comparable quality. This tradeoff is presumably discussed under the heading.
:JPG images also have an attached {{w|EXIF}} data file, not present in PNG images, which may contain information about the device that the screenshot was taken on (especially "with", e.g. a camera) and thus be a potential privacy risk in some cases. However, EXIF metadata is not used with JPEG 2000. However, PNG can contain a transparency layer, allowing the object in the image to exist without a background.

;Watermark ethics
:Many users and websites add {{w|watermarks}} to their original content (or even worse: their screenshots) to indicate where it came from. As depicted in [[1683: Digital Data]] this can lead to degradation of quality as watermarks are stacked on top of each other. It is generally considered okay to put a single unobtrusive watermark on one's own original work; anything other than that would be considered unethical.

;Spotting fakes
:It is relatively easy to fake a screenshot in an image editing program such as {{w|GIMP}} or just editing the page source, making it seem like another organization or person is the original source of the content, possibly damaging their reputation. Some of these techniques are easily detectable by looking at the image's {{w|metadata}} or correlating the contents of the screenshot with other sources.

The title text once again refers to the continual re-screenshotting of data as seen in [[1683: Digital Data]], where the final examination consists of the students taking a screenshot good enough that it is still recognizable (and hopefully readable) after being re-compressed, re-screenshot and re-uploaded to various social networking sites, deteriorating its quality. This is quite a difficult task, considering the student only has control over the first screenshot, and subsequent screenshots could degrade the quality to any level. Hopefully the professor is aware of this and plans to perform the test under controlled conditions, as well as grade on a curve.

Screenshots were previously explored by Randall in [[1373: Screenshot]], [[1683: Digital Data]] and [[1815: Flag]].

==Transcript==
:<big>Intro to Screenshots</big>

:[The left side of the panel shows three images. The largest image is a screenshot of text with the middle section highlighted and margins and top and bottom rows marked with red lines and arrows. The two smaller images below are cropped versions of the screenshot in the first image: the left image has an incorrect "squashed" aspect ratio and a red X on it, while the right image has a correct aspect ratio and a green check mark.]

:[The right side of the panel:]

::<u>Syllabus</u>
:*Highlighting: What & how much
:*Aspect ratios
:*Cropping: Pre- and post-
:*Whitespace
:*Screenshots vs links
:*Catching the right GIF frame
:*Snapchat and trust
:*Embarrassing background tabs
:*Spellcheck's red outlines
:*Security: Beware URL tokens
:*Redacting personal info
:*Useful browser modes
:*Tradeoffs: PNG vs JPG
:*Watermark ethics
:*Spotting fakes

:[Caption below the panel:]
:My class on screenshots was a big hit, although for some reason I only ever sold one copy of the digital textbook.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Computers]]

what if? articles

2025-07-08T17:54:34Z

WriterArtistCoder: Added YouTube for 129: Black Hole Moon

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].''</noinclude>
==Article index==
<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things to do: '''</big></span>  ''(If you need help editing the table, check out the '''''[[What If? chapters#Editors|Editors section]]'''''! It includes a simple summary of the templates' documentations.)''

*'''We only need to work on the explanations now!''' Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Need to finish explaining the exclusive chapters in the ''What If?'' books! [[#1-13|''(jump to the book-exclusive chapters)'']]

----

This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.<noinclude>
[[Category:Incomplete explanations| ]]{{notice|<u>The incomplete answers below will look like this.</u> <br>There are about '''8''' incomplete explanations below, but [[#1-13|many are too short]]!

[[#142|''(jump to the unfinished explanations)'']]}}</noinclude>
{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in... <noinclude></noinclude> ''(click to sort)'' <noinclude></noinclude>
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{What If|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate in about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{What If|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{What If|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{What If|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|In physics, a {{w|mole (unit)|mole}} is a number that equals approximately 6.022 × 10<sup>23</sup>. If this amount of moles (the furry animals) were put in space, they would form a sphere a little bit larger than our Moon with about the same gravity as Pluto. The surface would freeze and trap the interior warmth, causing geysers of hot meat and methane.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{What If|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{What If|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{What If|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{What If|8|Everybody Jump}}'''
|''"What would happen if everyone on Earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{What If|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{What If|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|{{book|23|2025|04|01|WH4g1ptJ-70|What if the Earth rotated 90 degrees?}}
|-
|[[File:Droppings.png|100px]]
|'''{{What If|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|{{notice|I'm assuming the last sentence of this is saying: "if you're under a tree → a few hours. If not → much much more than 195 yrs." Needs to be explained better.}}Assuming an even distribution of all birds across the Earth's surface and an hourly pooping frequency, it would take you about 195 years. However, those assumptions are unrealistic: it'd probably be more likely a matter of hours if you were laying under a tree or something.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{What If|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{What If|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the Moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{What If|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{What If|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|Surprisingly, not much! Large waves already disappear quickly when created by surface explosions, and moving the detonation underwater only lessens the effect. If you exploded a Tsar Bomba at the bottom of the Mariana Trench, the resulting eruption would create massive bubbles before turning into warm water and debris.
|{{blog|15|2012|10|09}}
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| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{What If|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{What If|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{What If|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O'Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{What If|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{What If|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the Earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the {{w|Oh-My-God particle}}), the Earth would explode with enough force to obliterate the entire Solar System.
|{{blog|20|2012|11|13}}
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|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{What If|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14|Machine-Gun Jetpack}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{What If|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
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|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{What If|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{What If|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
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|[[File:Three Wise Men.png|100px]]
|'''{{What If|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but the paths they would take would make some really cool patterns due to various factors, such as the Earth's rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|{{book|22|2025|03|04|YL2VNtus4xk|What if the wise men kept walking after Jesus’s birth?}}
|-
|[[File:Leap Seconds.png|100px]]
|'''{{What If|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|The only real way to do this is by hitting Earth with asteroids; all other ideas would be too difficult or wouldn’t work. With 50,000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds (mostly because it would deliver the energy of about one dinosaur-killer asteroid every couple days, wiping out life on Earth quite quickly)
|{{blog|26|2012|12|31|6d late}}
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|[[File:Death Rates.png|100px]]
|'''{{What If|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|The world population would continue to grow, though 40% more slowly. Pilots, drivers, and surgeons would die en route and mid-operation, but these would be comparable to usual accident rates and handled fairly easily.
|{{blog|27|2013|01|08|1d late}}
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|[[File:Steak Drop.png|100px]]
|'''{{What If|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked, as the steak will have to pass through parts of the atmosphere that are freezing cold and the parts of the fall where heat is being applied are more likely to char and disintegrate the steak than cook it.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
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|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{What If|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{What If|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{What If|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{What If|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{What If|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|The sea level would fall by about 6 microns, slightly more than the diameter of a strand of spider silk. However, since the oceans are currently rising at about 3.3 millimeters per year due to global warming, the water would be back up to its original average level in 16 hours.
|{{blog|33|2013|02|19}}
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|[[File:what if? Twitter.png|100px]]
|'''{{What If|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10<sup>46</sup> meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{What If|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{What If|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
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|[[File:Supersonic Stereo.png|100px]]
|'''{{What If|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
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|[[File:what if? Voyager.png|100px]]
|'''{{What If|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|You could ''reach'' Voyager I with some well-timed gravity assists from Jupiter and Saturn, but getting back would require an ''absurd'' amount of fuel. You could use ion fields to require less fuel, but they also produce less thrust.
|{{blog|38|2013|03|26}}
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|-
|[[File:Hockey Puck.png|100px]]
|'''{{What If|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|This can't really happen, due to the size and weight difference between the goalie and a hockey puck. You'd need to fire an object at Mach 8 to knock the goalie back, but firing a puck at that speed would char the puck while air resistance would slow it down. If you actually did fire a hockey puck at a goalie at high speeds, it would have the same effect as hitting a cake with a tomato as hard as you can.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{What If|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
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|-
|[[File:Go West.png|100px]]
|'''{{What If|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|No. While technically the car fleet would outpace the continental drift, the continental drift is being powered by the forces in the Earth's mantle, and these forces outmatch the car fleet by millions of times.
|{{blog|41|2013|04|16}}
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|-
|[[File:Longest Sunset.png|100px]]
|'''{{What If|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|The longest way you can experience a sunset is by driving on certain roads in Norway and Finland for 95 minutes, as this is where the best method to outpace the Sun works (outpacing {{w|Terminator (solar)|the terminator}}). A similar concept has been explored in comic [[162: Angular Momentum]].
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{What If|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|Even if we change the requirements to just the passengers surviving, this isn't plausible. A train can't complete a full loop without the loop being too small, making the train move too fast and making every passenger die from the g-forces involved.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{What If|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Using estimations and aerodynamics calculations, Aroldis Champman (holder of the record for fastest pitch) could probably throw up to 16 giraffes high if he was using a golf ball. Unless you count letting go of balloons, of course.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{What If|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{What If|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|A bowling ball the size of the Earth would be much less dense, and have much less gravity. Due to this, the finger holes would collapse. causing eruptions of hydrocarbons and scars similar to those on the Moon.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{What If|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They wouldn't be able to see us very well. Radio waves fade quickly in space and we've stopped sending out as many of them. If they happened to pick up, they would only get a message similar to the [https://en.wikipedia.org/wiki/Wow!_signal Wow! Signal]. The best message they could see is visible light, as the water and weather on Earth's surface would be a telltale marker of some form of life.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{What If|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{What If|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|{{book|24|2025|04|15|X7sbn9LMZOg| What if the Sun suddenly went out?}}
|-
|[[File:Extreme Boating.png|100px]]
|'''{{What If|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the “third sound” as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{What If|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{What If|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{What If|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|Hundreds of thousands of years, so you'll need a bigger portal. As their basins are cut off, many shallow seas and a few deep trenches remain, leaving much of Earth still covered with water. Massive, unpredictable environmental changes would probably wipe out mankind. If they didn't, the Dutch would take over the world, no longer preoccupied with preventing their lands from flooding as they are now.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{What If|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|The water would fill the {{w|Valles Marineris}}, eventually leaving only {{w|Olympus Mons}} and some other small islands. The sea would ultimately freeze over, become covered in dust, and migrate to permafrost at the poles. In the meantime, the Netherlands would colonize Mars through the portal. The video additionally mentions that the greenhouse gas effects caused by all the new water might keep Mars's oceans liquid.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{What If|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances they just sneezed are 1 in 40000. There's also a 1 in a billion chance that the person you called just murdered someone, a 1 in 10 trillion chance they've just been killed by lightning, and another 1 in 10 trillion chance that you and the other person called each other simultaneously.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{What If|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{What If|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the Earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
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|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{What If|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{What If|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|You'd need six printers, but if using an ink printer, costs would rack up to $500,000 a month, dwarfing paper and maintenance costs. You'd need to file away past versions in case they were reverted (restored), which would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{What If|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{What If|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{What If|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|You would need a balloon at least 10 to 20 meters across to slow your fall, as well as needing 10 helium tanks that are 250 cubic feet. You'd have to do it really quickly though, and starting from a higher place will not help due to the atmosphere's thinness making you accelerate.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{What If|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|Using electric consumption and datacenter spending as a measuring stick, Google probably has around 1-2 million servers, which equates to around 15 exabytes (or 15,000,000,000,000,000,000 bytes). Assuming a punch card holds 80 characters, all of that data comes out to 4.5 kilometers/2.8 miles, 3x deeper than the New England ice sheets.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{What If|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|A nudist would survive for five hours, then succumb to the cold. With a good coat, one would survive for seven, even plausibly eight, until reaching the low-oxygen {{w|death zone}} and suffocating. However, your corpse would outlast the Earth as it was swallowed by the Sun.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{What If|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|It's difficult to pin down an "average" for Twitter timeline lengths, but an estimate by Diego Basch and the Tweet rate as of 2013 suggests that the section timeline extending to the past would have 345 billion tweets and be 8,000,000 kilometers (5,000,000 miles) tall. Using extrapolation techniques similar to those used in the {{w|German tank problem}}, the future and past timelines combined would likely contain 690 billion tweets.
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{What If|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|500 mph winds are more than fast enough to pick up a person and propel them through the air. In fact, 500 mph winds are so fast that they only occur on Earth in extreme situations like the immediate vicinity of an erupting volcano or the aftermath of a major asteroid impact at which point wind speed would only be one of many dangers to human survival.
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{What If|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|After a month, the gain would be measurable but within the normal variation of gravity. After a year, it would be more prominent at 5%. Humans could survive with difficulty for a decade, but even in specially-built environments, they would succumb within a century as air itself became toxic from atmospheric pressure. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{What If|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|Technically, yes. However, there would be major challenges. For one, gravity would be at full strength at your feet, but only 25% strength at your head, giving the illusion that you're being stretched. You would need to sprint at 3 meters per second to leave orbit. However, if you don't make it to that point, you would enter a highly eccentric orbit which would pull on your body in strange ways. Alternatively, you could escape the atmosphere by jumping. If you can make a dunk in basketball on Earth, you could escape this body by jumping.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{What If|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|This depends on if Facebook stays popular or declines in popularity over time. In the former case, the dead would only outnumber the living well into the 2100s; while in the latter, this happens around 2060. Facebook can afford to keep all our data indefinitely, but there are ethical questions.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{What If|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|A normal, standard-issue mower running for 10 hours straight could cut an area of 25,000 square meters, or 27,000 yards. Using a much faster mower commissioned by the magazine ''Top Gear'' that is used all day, every day, it could cut an adult male cougar's home range (which [https://wdfw.wa.gov/species-habitats/species/puma-concolor#:~:text=Adult%20male%20cougars%20roam%20widely,terrain%2C%20and%20availability%20of%20prey. the Washington Department of Fish and Wildlife] reports as 50-150 miles or 80-240 kilometers).
|{{blog|70|2013|11|05}}
|
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|-
|[[File:Stirring Tea.png|100px]]
|'''{{What If|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|No, not really, It would take at least 1 horsepower (a lot for a person stirring), and reducing the power would just make it cool faster. Stirring faster and faster would cause a vacuum to form and stirring to become ineffective.
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{What If|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|The most well-document candidates are six Apollo astronauts who ventured behind the dark side of the Moon. Antarctic explorers and pre-colonialism Polynesian explorers have a shot, but there's no good evidence of specific people who beat the Apollo record. Astronauts Mike Collins and Al Worden said they were not at all lonely, the latter even enjoying his soltitude.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{What If|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|Neutrinos are subatomic particles that barely interact with the universe at all, so it's hard to imagine a scenario where they could harm you, even in a supernova. But at about 2.3 AU, or a little farther than Mars is from the Sun, even the neutrinos would be dense enough to kill you.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{What If|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|Humans have likely consumed 6.5 trillion liters or 1.7 trillion gallons of soda ever, based on estimates of population growth and popularity of soda. Assuming humanity has drunk 100 trillion liters (26 trillion gallons) of water, it is reasonable to conclude that only 0.0000005% of Earth's current water reservoir has been turned into a soft drink. However, considering how long water takes to cycle around and certain prehistoric life forms, the water in the average soda was likely once consumed by a dinosaur.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{What If|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|The English word with the most consecutive letters on the same key is "Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{What If|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|About the 1500s, as the population of active English writers reached a few hundred, meaning you would never be able to catch up (using the average word count for a few famous authors as a baseline). You might not want to read them, anyways.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{What If|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|We would reach 10 to 12 meters at age 20, though the human body is not scalable to those heights, as our bone structure is too thin, while our hearts wouldn't be able to pump the blood around.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{What If|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|Estimates vary, but the T-rex was estimated to need 40,000 calories per day. Ryan North of Dinosaur Comics tells us that the average 80 kg/175 pound human [http://www.topatoco.com/merchant.mvc?Screen=PROD&Store_Code=TO&Product_Code=QW-PERSON&Category_Code=QW contains 110,000 calories]. Therefore, a T-rex would need to eat someone every 2 days or so.
|{{blog|78|2014|01|07}}
|{{book|2|7|T. Rex Calories}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{What If|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|An average cup of tea requires 2 grams of tea per 100 mL of water, and to make proper tea out of the Great Lakes, you would need 450 billion tons of tea for the Great Lakes' 22,600 cubic kilometers/5400 cubic miles of water. A total year's supply of tea is only 4.8 million tons, which would make tea about as strong as 2 drops in a bathtub. To make proper lake tea, you could use Wular Lake in Kashmir or Ullswater in UK's lake district, due to the volume of both being small enough for the tea to work.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{What If|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|''Human'' viruses would fill about ten oil drums. ''All'' viruses would form a wet heap the size of a small mountain, with a texture resembling pus or meat slurry.
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{What If|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|Yes, eventually the bullet would come to a maximum height, at which point you could grab the bullet before it fell down. You'd need to grip it firmly, because the bullet would still have it's rotational momentum and might jump out of your hand. A larger bullet would require a larger height to catch it at, and even then, it would still be difficult to grab. Of course, this is illegal and can injure you or other people.
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{What If|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|The baseball thing is much harder. You'd have to hit it out of the atmosphere, and a baseball is too small to do that. Even if you could, it's still not a fair comparison because astrophysicists are allowed to refine their approach as they close in on the target, which you can't do with a thrown baseball. It turns out that the comet mission requires about the same level of precision as laser eye surgery.
|{{blog|82|2014|02|05|1d late}}
|
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|-
|[[File:Star Sand.png|100px]]
|'''{{What If|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|Although red giants aren't as common as Sun-like stars or red dwarfs, they would form a stretch of gravel that went on for miles due to their large relative volume. 99% of all stars would form a small patch of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{What If|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|That there isn't enough paint to go around. The total estimated amount of produced paint, a trillion litres, is only enough to paint as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{What If|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|You ''could'' propel your ship using golf balls, but, assuming they are being fired at 226 mph (363 km/h), the fastest world record, the amount of golf balls needed for this would be around the size of Earth and wouldn't even get you to the Moon. You'd need a potato cannon fueled by acetylene firing golf balls at 310 mph (500 km/h) which reduces the size of the golf mass to 150 miles (240 kilometers). This would be incredibly costly and firing them faster would essentially be the same as building a normal rocket.
|{{blog|85|2014|02|25}}
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|[[File:Far-Traveling Objects.png|100px]]
|'''{{What If|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|There are a few different frames of reference you can look at, but in normal terms Mariner 10 has traveled much farther than Voyager 1. It's travelled a couple of light-days around the Sun, while the Voyager probes have only travelled a dozen light-hours.
|{{blog|86|2014|03|04}}
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|[[File:Enforced by Radar.png|100px]]
|'''{{What If|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Radio waves are generally ''very weak''. You'd need the collective energy of trillions of cell phones just to levitate a snow flake. To stop a car, you'd need at least 2 trillion joules of radiation, which would vaporize the car and everything else around it.
|{{blog|87|2014|03|11}}
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|[[File:Soda Sequestration.png|100px]]
|'''{{What If|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|There are currently 400 parts of carbon dioxide per million. To bring it down to pre-Industrial levels, you'd need 450 quadrillion cans of soda, each being able to hold 2.2 grams of CO2. This would cover Earth's land 10 times over.
|{{blog|88|2014|03|18}}
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|[[File:Tungsten Countertop.png|100px]]
|'''{{What If|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|Tungsten has the highest melting point of any element, but even tungsten would melt before it got too far. If you protected it with a heat shield, it would get destroyed all the same by the battering of the particles in the Sun's atmosphere. It could possibly penetrate the surface if it was larger, but as it stands, it wouldn't get past the outer layers.
|{{blog|89|2014|03|25}}
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|[[File:Great Tree, Great Axe.png|100px]]
|'''{{What If|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|The seas would be a little bigger than the Pacific Ocean. Trees can't grow taller than about 130 meters naturally, and would physically crush itself if above a few kilometers tall. Ignoring these restraints, the tree would be about 75 km tall with trunk diameter of 2 km. Ignoring human size restraints, the person would be close to 3 km tall. The axe would be about 500 meters long and relatively the size of a flimsy hatchet. It may take a few weeks to chop down the tree and the impact would create a tsunami that probably wouldn't wipe out the human race, but would be likely the deadliest single disaster in our history.
|{{blog|90|2014|04|03|2d late}}
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|[[File:Faucet Power.png|100px]]
|'''{{What If|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|Small hydroelectric dam in the bathtub would yield about $0.25 per month of electricity, but the best option would probably be to bottle and sell your tap water, yielding about $38 million per year at $1.50 per bottle.
|{{blog|91|2014|04|08|2d early}}
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|[[File:One-Second Day.png|100px]]
|'''{{What If|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
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|[[File:Windshield Raindrops.png|100px]]
|'''{{What If|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Water droplets in air are normally lighter than the air, so this wouldn't happen under normal circumstances. However, at supersonic speeds, the water droplet would impact the windshield at Mach 18. It wouldn't shatter the windshield, but it would slowly batter it away.
|{{blog|93|2014|04|22}}
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|[[File:Billion-Story Building.png|100px]]
|'''{{What If|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|The tower would be far too big to support itself under its own weight. The tower would also extend past the Moon. The sheer amount of elevators needed would provide little to now room for actual usable space. Additionally, space junk would be a large problem, as there is a high probability that space junk would collide with the tower.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|{{book|21|2025|02|11|Z_xJ40QXu7Q|What if you built a billion-story building?}}
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{What If|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|The Apollo Program took about the same manpower as the building of the Great Pyramids, but physics wise, the Great Pyramid only contains 10<sup>12</sup> joules of gravitational potential energy. A single Saturn V rocket's fuel has 20 times more energy.
|{{blog|95|2014|05|06}}
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|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{What If|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|The debt would be incredibly great, to the point that everything ever created by man does not have enough value to pay it off. For comparison, former soliciter general Ted Olson leaked that he charges $1600 per hour for his services. Even if every habitable planet in the Milky Way had a population of 8 billion Ted Olsons, and you hired all of them for a thousand generations, the cost would still be lower than if you lost.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
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|[[File:Burning Pollen.png|100px]]
|'''{{What If|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
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|[[File:Blood Alcohol.png|100px]]
|'''{{What If|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|No, you can't. Alcohol in a drunk person's blood would be very diluted and by the time you drank the 14 glasses needed to get drunk, you would've vomited on the account of drinking blood. That aside, you could also get iron overload as well as various blood-borne diseases.
|{{blog|98|2014|05|27}}
|{{book|2|42}}
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|[[File:Starlings.png|100px]]
|'''{{What If|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|Each bird is 85 grams, with a density of around 43 grams per square meter. Because of this, the air would be 25 times stronger than the starlings and the substance governing the collapse. The air would have to be bigger than the Earth to collapse the starlings and the starlings themselves would need to be bigger than the Solar System. They would then promptly turn into a star.
|{{blog|99|2014|06|03}}
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|[[File:WWII Films.png|100px]]
|'''{{What If|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|Assuming the average run time of a WWII film was 95 minutes, the combined length was 300 days, meaning World War II was longer than the movies 7 times over. The two most likely candidates for highest movie:war ratio are the Indo-Pakistani war, which lasted 13 days and has 5 catalogued films about it, and the Anglo-Zanzibar war, which only lasted 38 minutes but lacked any films.
|{{blog|100|2014|06|11|1d late}}
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|[[File:Plastic Dinosaurs.png|100px]]
|'''{{What If|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|Contrary to the name, oil is not made of dead dinosaurs, mostly being composed of marine plankton and algae. Geology is complicated, but the gist is that only a small fraction of a plastic dinosaur toy could've come from dinosaur oil, and depending on the location, it may contain none at all.
|{{blog|101|2014|06|18}}
|{{book|2|26}}
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|[[File:Keyboard Power.png|100px]]
|'''{{What If|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|Writing one full novel would provide enough energy to run a laptop for 15 seconds. If each novel takes you six months, this would save a fraction of a penny of electricity. To keep a laptop, you'd need to write a novel every ten seconds, and to run a microwave would require one novel per second.
|{{blog|102|2014|06|25}}
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|[[File:Vanishing Water.png|100px]]
|'''{{What If|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|If all water vanished, the first to notice would be anybody currently in the ocean, and over the course of a minute, they would all fall, some of them dying but some surviving with minor injuries. After this, all marine life will have perished. Humans follow soon after as the water cycle would've stopped, collapsing global infrustructure and killing every plant and person by dehydration. The end of the water cycle also leads to a runaway greenhouse effect later on.
|{{blog|103|2014|07|02}}
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|[[File:Global Snow.png|100px]]
|'''{{What If|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|Snow isn't very dense, and 1 inch of rain would lead to a foot or more of snow. Factoring in snow compressing throughout the day, you would need a mole of snowflakes to cover the Earth in 6 feet in snow.
|{{blog|104|2014|07|09}}
|{{book|2|59}}
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|[[File:Cannibalism.png|100px]]
|'''{{What If|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|If half of the world eats the other half, then it would take about 32 months before it came down to 2 people. However, this is also a very efficient way to get a {{w|Transmissible spongiform encephalopathy|prion disease}}.
|{{blog|105|2014|07|16}}
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|[[File:Ink Molecules.png|100px]]
|'''{{What If|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|You'd use about 100,000,000,000,000,000 molecules.
|{{blog|106|2014|07|23}}
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|[[File:Letter to Mom.png|100px]]
|'''{{What If|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|An ICBM would take 12-15 minutes to cross the distance. While that is the best method, a few other methods come close. The Concorde would only take 30 minutes, while firing something with a rail gun down a vacuum tube would take only 10-20 minutes.
|{{blog|107|2014|07|30}}
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|[[File:Expensive Shoebox.png|100px]]
|'''{{What If|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000. That amount of platinum would be worth $13 million, while diamonds, Adcetris and LSD would be valued around 1-2 billion,
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
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|[[File:Into the Blue.png|100px]]
|'''{{What If|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Infinitely powerful laser beams do not exist, and if they did, they would vaporize the air and destroy everything like in the ''[[what if? (blog)|what if?]]'' article ''{{what if|13|Laser Pointer}}''. That being said, if it were truly random, it would be aimed at Earth 50% of the time. If you miss the Earth, 89,999 times out of 90,000, your beam will pass right out of the galaxy without hitting anything. When it does hit something, it will almost always be the Sun or the Moon.
|{{blog|109|2014|08|20}}
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|[[File:Walking New York.png|100px]]
|'''{{What If|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|Based on estimates of US Postal Service carriers and their travel times, we know that walking every street in NYC would probably take 14 years. Assuming it takes about 25 seconds to enter an apartment building, leave, and go to the next one, it would only take an additional 10 years to visit every apartment. However, under [http://ypdcrime.com/penal.law/article140.htm New York Penal Code], the punishment would take 2 million years or 2,000 millenia to finish.
|{{blog|110|2014|08|27}}
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|[[File:All the Money.png|100px]]
|'''{{What If|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|Currency only makes up a fraction of Earth's money, and it's unlikely people would agree to your sudden claims of ownership over all of the land, nor would they let you spend the actual currency you have. Said currency would quickly crush you, as most of its weight is in coinage. You could build a structure to contain the coins, but this would violate NYC building codes.
|{{blog|111|2014|09|02|1d early}}
|
|{{book|25|2025|05|06|saj7b5C6TCM|What if you literally had all the money in the world?}}
|-
|[[File:Balloon Car.png|100px]]
|'''{{What If|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
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|[[File:Visit Every State.png|100px]]
|'''{{What If|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
<div align="right">—as discussed by Stephen Von Worley <span class="plainlinks">on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ '''''Data Pointed''''']</span>
|It would take you 160 hours by car, 39 hours by landing a private jet in each state, and 18 hours by F-22 fighter jet and helicopter landing in each state. However, if you relax the requirement to land in each state and simply count entering the state's airspace as "visiting" it, you can do it in around 7 hours with an SR-71 Blackbird. If we allow satellite orbits, you can do it in just over 6 hours with five orbits, assuming your satellite makes a course correction on each orbit.
|{{blog|113|2014|09|24}}
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|[[File:Antimatter.png|100px]]
|'''{{What If|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|It would wipe out all life on Earth, but surprisingly slower than you might expect. The annihilation of antimatter entering the atmosphere would add enough extra heat to create a runaway greenhouse effect and make Earth similar to Venus. We would be in much more danger from meteorites, with dinosaur-killer equivalents hitting the upper atmosphere every few months.
|{{blog|114|2014|10|01}}
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|[[File:Into the Sun.png|100px]]
|'''{{What If|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface, as the energy received by your skin would be minimal. You would maybe see a bright flash of light. The core, on the other hand, would vaporize you, as the energy delivered there would be able to give you a second-degree burn after 1 femtosecond (1 millionth of a nanosecond) in the core.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{What If|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{What If|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
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|[[File:Physical Salary.png|100px]]
|'''{{What If|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|At minimum US wage, a worker would earn about one water bottle of mixed coins per day. A CEO would earn about 600 such bottles per day, and the coins would accumulate on the floor at a rate of about 0.5 inches per day. Mark Zuckerberg would earn 25 such bottles ''per second'', and the coins would bury him if he sat still for an hour.
|{{blog|118|2014|10|30}}
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|[[File:Laser Umbrella.png|100px]]
|'''{{What If|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It's doable in theory, but the energy required to completely vaporize a raindrop (rather than merely splattering it) is high enough that your surroundings would get dangerously hot. Targeting the droplets might be possible with adaptive optics, but it would require a complicated device. You could try firing rapidly in random directions instead, but your high-powered laser might go several hundred meters without hitting a raindrop, which would endanger your local neighborhood.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{What If|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
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|[[File:Frozen Rivers.png|100px]]
|'''{{What If|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
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|[[File:Lava Lamp.png|100px]]
|'''{{What If|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
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|[[File:Fairy Demographics.png|100px]]
|'''{{What If|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
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|[[File:Lunar Swimming.png|100px]]
|'''{{What If|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
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|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the Moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{What If|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|It would take two hours and 20 minutes.
|{{blog|125|2015|01|15}}
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|[[File:Stairs (What If?).png|100px]]
|'''{{What If|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|{{notice|Could be made clearer (e.g., the order we gave is: professional stair-climber→motorcycle→by foot. Seems unintuitive.)}}It would take a week or two for a professional stair-climber, or about half a day by motorcycle. If going on foot, you'd also need to carry a huge backpack stuffed with nothing but sticks of butter in order to get your daily caloric intake (including the energy expended from climbing the stairs).
|{{blog|126|2015|01|22}}
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|[[File:Tug of War.png|100px]]
|'''{{What If|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|Two teams of 25 people each would be able to rip a half-inch iron bar apart: tug-o-war is a very dangerous game, as there's so much force being exerted on the rope. The theoretical upper limit of a game is 100,000 players each, pulling a 200-mile–long rope made of graphite ribbons.
|{{blog|127|2015|01|28|1d early}}
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|[[File:Zippo Phone.png|100px]]
|'''{{What If|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
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|[[File:Black Hole Moon.png|100px]]
|'''{{What If|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|Not much would change. A black hole of the Moon's mass would be the size of a sand grain, but gravitational effects would still be more or less the same here on Earth. There would be no moonlight, which would make the Earth a bit colder and mess with some nocturnal animals. You wouldn't see any lunar eclipses due to the tiny size of the Moon. It would only cause significant problems if the Moon replacement occured while humanity was exploring the Moon.
|{{blog|129|2015|02|12}}
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|{{book|27|2025|07|08|UQgw50GQu1A|What if the moon turned into a black hole?}}
|-
|[[File:Snow Removal.png|100px]]
|'''{{What If|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|The flamethrower is more practical because microwaves don't heat ice very well. The microwave beam would require the power output of three aircraft carriers, and the flamethrower would have a gas mileage of 17 feet per gallon.
|{{blog|130|2015|02|19}}
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|{{book|26|2025|05|27|WYf9-xfm6t8|What if you used a flamethrower as a snowblower?}}
|-
|[[File:Microwaves.png|100px]]
|'''{{What If|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|The first cause of this issue is that the wave pattern of microwaves create 'dead spots' where the food isn't heated. Secondly, melted ice causes some parts to cook while the rest is still defrosting. Use a lower power level, stir your food partway through microwaving, and let it sit for a few minutes before you eat it. This allows the heat to spread evenly.
|{{blog|131|2015|02|27|1d late}}
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|[[File:Hotter than Average.png|100px]]
|'''{{What If|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|The water average is the year-round average air temperature. By saying the water is "hotter than average", they're implying the water in the pool is not tied to it. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
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|[[File:Flagpole.png|100px]]
|'''{{What If|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|It would be impossible, even a gymnast's arms would be ripped off from the force.
|{{blog|133|2015|03|17|3d late}}
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|[[File:Space Burial.png|100px]]
|'''{{What If|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|Even before you were launched, your body would dry out very quickly. In low orbit, your body would fall to Earth and be burned from atmospheric re-entry. In a higher orbit, it would be destroyed from space debris. In high orbit, you could last for a few centuries. If your body was ever found it would mean there are a lot of people travelling around: making bodies pretty common.
|{{blog|134|2015|03|28|4d late}}
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|[[File:Digging Downward.png|100px]]
|'''{{What If|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|To remove all that soil, the energy required would heat up the surrounding beyond fatal levels pretty quickly. Immune to the heat, you could survive for one to two hours, as oxygen becomes toxic at depths higher than 5 kilometers.
|{{blog|135|2015|04|05|1d late}}
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|[[File:Spiders vs. the Sun.png|100px]]
|'''{{What If|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun, by 13 orders of magnitude (the Sun is very big). But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
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|[[File:New Horizons.png|100px]]
|'''{{What If|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
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|[[File:Jupiter Submarine.png|100px]]
|'''{{What If|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|No. Before it got to the point where it could float, the submarine would be crushed by the high pressure and melted by the high temperature. This is because gasses behave differently to fluids: the point where things can float is at a much higher pressure.
|{{blog|138|2015|07|28|7d late}}
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|[[File:Jupiter Descending.png|100px]]
|'''{{What If|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|There's not a whole lot to go on here; we have some data and educated guesses about what's going inside these gas giants, but we haven't sent any probes equipped with operational cameras into a gas giant so we don't really know. A book by Michael Carroll suggests that there is a layer between the upper ammonia haze and lower ammonium hydrosulfide clouds, that could provide some good views, and if so, the view would be similar to Earth's atmosphere in that clouds and fellow submarines would fade into blue.
|{{blog|139|2015|08|04}}
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|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{What If|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|There would be so much energy packed into one space that it would create a black hole as massive as the observable universe that would expand outwards at the speed of light. Because of the charge from the electrons, it would be a {{w|naked singularity}}, a black hole with infinite mass that allows light to escape.
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
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|[[File:Sunbeam.png|100px]]
|'''{{What If|141|Sunbeam}}'''
|''"What if all of the Sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|According to Randall, parts of the atmosphere would be heated to millions of degrees, and the bubble of destruction would wrap around the Earth before it even reached the other side. The light reflected off the Moon would be hot enough to burn you to death. If the beam couldn't track the Earth, part of it would survive as the Earth orbited out of the way. If the beam reached another planetary system, it could heat up the surface of some distant exoplanets. However, this conclusion depends on the precise nature of the "bundling up". If this "bundling" is accomplished via passive optics such as lenses and mirrors, then the temperature (and geometry) of the incoming beam will be restricted according to all the optics principles described in "Fire from Moonlight", and under no circumstances would any part of Earth's atmosphere or surface exceed 5000 K, due to the laws of thermodynamics. If, however, the "bundling" consists of an "active" procedure of generating electricity via PV panels, and then powering actual laser emitters with it (not just "laser-like") - which doesn't sound like Max's conception - then yes, the narrow beam of essentially "infinite" temperature and consequent destruction that Randall describes could indeed occur.
|{{blog|141|2016|01|12|3m 18d late}}
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|[[File:Space Jetta.png|100px]]
|'''{{What If|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why??}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
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|[[File:Europa Water Siphon.png|100px]]
|'''{{What If|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
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|[[File:Saliva Pool.png|100px]]
|'''{{What If|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|For an Olympic pool, it would take you 8,345 years. In order to finish by the present day, you'd need to start during the invention of agriculture.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
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|[[File:Fire From Moonlight.png|100px]]
|'''{{What If|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|{{notice|Too short, explain if you were surrounded by the Sun}}Unfortunately, it is not possible to summarize Randall's article succinctly, because most of his explanation is completely irrelevant to the question. Randall's answer is effectively "No, and here are a set of correct principles of optics that do not support my claim." The correct answer is "Yes, just like it is possible to start a fire with sunlight reflected off anything else, because the temperature/wavelength/energy of light does not change (substantially) when it is reflected, and the temperature of visible sunlight is around 5000 to 6000 K." (The obvious assumption about the intent behind Rogier's question is that "moonlight" refers to the reflected sunlight, and not the Moon's own surface emission of longwave infrared radiation with a temperature of 300 - 400 K, which we can't see - but this should really be clarified by Rogier.)
|{{blog|145|2016|02|09}}
|{{book|2|51}}
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|[[File:Stop Jupiter.png|100px]]
|'''{{What If|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|Even if we were to throw Earth at Jupiter, this could never happen, because Jupiter is much more massive than Earth. Gravity assists are like bouncing a tennis ball off a train, and to stop the train, you'd need an awfully large tennis ball. 
|{{blog|146|2016|02|16}}
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|[[File:Niagara Straw.png|100px]]
|'''{{What If|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|In order to funnel Niagara Falls through a straw, you'd need to accelerate the water to one-quarter light speed, and no machine exists that's capable of doing that. If you somehow could do it, the resulting waterjet would have the power output of a small star, and would boil away the oceans and wipe out all life on Earth.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|{{book|27|2025|06|17|pfbzrrcQZjs|What if you funneled Niagara Falls through a straw?}}
|-
|[[File:Eat the Sun.png|100px]]
|'''{{What If|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|0.000000000065%. This is such a ridiculously small portion of the Sun's heat exhaust, that we cannot increase our personal calory intake enough to compensate. Instead we need to add more persons. A lot of them in fact. So many that we need to spread them - and the food that they eat - out throughout not just our galaxy but multiple galaxies. Otherwise, the food alone would be massive enough to turn into a black hole.
|{{blog|148|2016|03|12|8d late}}
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|[[File:Pizza Bird.png|100px]]
|'''{{What If|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|After careful analysis of wing types, relative weights, and pizza grabbing mechanisms, it is deduced that even the most compatible bird - the eagle - would be hard-pressed to deliver a pizza to an airliner, the relative speed being the largest hurdle. However, delivery to a house - where the relative speed is not so much of a problem - would be possible, though the pizza might be found a slice or two short.
|{{blog|149|2016|03|26|7d late}}
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|[[File:Tatooine Rainbow.png|100px]]
|'''{{What If|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|Each sun is the source of not just one rainbow, but a whole series of rainbows of diminishing intensity; the elusive 5th order rainbow had apparently been pictured at the time of publication. A planet with two suns would consequently have two series of rainbows. A solar system arranged like Tatooine would have to be circumbinary, which limits the separation of the two rainbow series to about 20 degrees. As the main rainbow is 84 degrees across, this leads to the conclusion that the rainbows would always be overlapping.
|{{blog|150|2016|05|23|1m 21d late}}
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|[[File:Sun Bug.png|100px]]
|'''{{What If|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|30 nonillion fireflies (3 with 31 zeroes after it), which is surprisingly small on the astronomical scale. Counterintuitively, it turns out a single firefly actually glows brighter than an equivalent mass of Sun. However, there are logistical problems with organizing that many fireflies, as you need to arrange them so that they're not blocking each others' lights. You can try to simplify it by just using one very large firefly, but it would be larger than the entire Solar System and immediately collapse into the biggest black hole in the universe.
|{{blog|151|2016|07|21|1m 23d late}}
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|[[File:Flood Death Valley.png|100px]]
|'''{{What If|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|Basically, yes. But there is a lot of digging, and the end result would be quite similar to the Salton Sea which is characterized as "gross" (technical term). Also, heat world records would likely move elsewhere.
|{{blog|152|2016|10|18|2m 21d late}}
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|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|For any peptides, 19 letters is the highest possible, that being the word "interdepartmentally". For naturally existing peptides in the human body, 8 letters is the highest known. Examples of 8 letters are: GRISETTE, DATELESS, REVERSAL.
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
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|[[File:Hide the Atmosphere.png|100px]]
|'''{{What If|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
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|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{What If|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
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|[[File:Toaster vs. Freezer.png|100px]]
|'''{{What If|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—<span class="plainlinks">[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ '''My Brother, My Brother, and Me'''], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ '''Episode 343'''], discussing a </span>Yahoo Answers question</div>
|As a superior being, the Toaster casts its gaze upon lowly humans and hrumphs at their bickering about such measly temperature variations as 40C. The Toaster regularly reaches 600C and thus, to it - much like to the Fire - everything else is cold, be it room temperature or freezer temperature. Winnipeg locals have it easy and can try this for themselves, as long as they can stave of the wolves.
|{{blog|155|2017|02|28|13d late}}
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|[[File:Electrofishing for Whales.png|100px]]
|'''{{What If|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
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|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{What If|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
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|[[File:Hot Banana.png|100px]]
|'''{{What If|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
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|[[File:Hailstones.png|100px]]
|'''{{What If|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|Hailstones get increasingly dangerous as they get larger, as their increased weight cancels their air resistance, allowing them to reach a higher terminal velocity while still carrying all that mass. Regular hailstones are too slow and light to be lethal, but a soccer ball-sized hailstone would hit at around 140 mph, capable of punching straight through the roof of a car or building. Fortunately, no hailstone on record has ever been that big, although storms can on occasion produce hailstones large enough to damage cars, and in rare cases even kill people.
|{{blog|159|2022|07|05|1m 30d late}}
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|''This blog article doesn't have a thumbnail.''
|'''{{What If|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|You'd need approximately a billion plus a trillion cars to pull this off. Also, in addition to destroying global ocean circulation and creating an illegal naval blockade, this is definitely a violation of her rental car agreement. Also, organizing a fleet of that many rental cars would be difficult.
|{{blog|160|2022|09|06|1m 26d late}}
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|''This blog article doesn't have a thumbnail.''
|'''{{What If|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|Given that the South pole (of Earth) points towards the Milky way centre, most of the galaxy will wind up in the air-space (space-space?) of countries of the southern hemisphere. However, due to Earth's rotation around its axis, the nadir of the galaxy core (on Earth) will constantly shift. Given that Australia is the largest of the southern countries, Australia will most often be the Rulers of the Universe. Northern hemisphere jurisdictions, such as New Jersey, will have to contend with some pretty nifty black holes and possibly murderous exoplanets.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
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|''This blog article doesn't have a thumbnail.''
|'''{{What If|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
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|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|Everyone would die. Then, the wind would destroy everything, with gusts blowing more than 1,000 mph (1,600 km/h) around the equator, killing 85% of the world population. The highest winds would only last a few minutes, but that would be enough to vaporise most human structures. Bunkers would be useless, because, even if your bunker were stuck to the ground hard, others would not be as strong and would hit yours at 1,000 mph. However, most of the researchers at the {{w|Amundsen–Scott South Pole Station}} would be completely fine. The wind blast would then become a heat blast with scorching temperatures and create global thunderstorms in moist areas. After a while, the Earth would gradually start to regain its rotational velocity thanks to the Moon.
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
| colspan="2" |''"Would it be possible to get your teeth to such a cold temperature that they would shatter upon drinking a hot cup of coffee?"''
<div align="right">—Shelby Hebert</div>
<div align="right"></div>
| rowspan="2" |
| rowspan="2"{{book|1|4}}
| rowspan="2" |
|-
| colspan="2" |''"How many houses are burned down in the United States every year? What would be the easiest way to increase that number by a significant amount (say, at least 15%)?"''<div align="right">—Anonymous</div>
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
*1,000 years back, you'd see many chestnut trees, wolves, and passenger pigeons.
*10,000 years back, the ground would be mostly bedrock, with large chunks of ice and dropped boulders, called glacial erratics.
*100,000 years back, several islands were pushed upwards by the ice. You would see many now-extinct species, such as Canis dirus, Smilodon fatalis, and Arctodus.
*1,000,000 years back, you'd see relatives of hyenas called Chasmaporthetes.
*1,000,000,000 years back would be no plants or animals, only single-celled organisms in the ocean.
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|''"What would happen if you made a periodic table out of cube-shaped bricks, where each brick was made of the corresponding element?"''
<div align="right">—Andy Connolly</div>
|The top two rows wouldn't be too dangerous to build, but the rest of the periodic table would seriously injure or kill you. In the sixth row, elements with short half-lives would destroy the room you were in as well as causing nuclear fallout to fall nearby. Past the sixth row, the entire city you were in would be destroyed.
|
|{{book|1|8}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
| colspan="2" |''"Would dumping anti-matter into the Chernobyl reactor when it was melting down stop the meltdown?"''
<div align="right">—AJ</div>
| rowspan="2" |
| rowspan="2"{{book|1|12}}
| rowspan="2" |
|-
| colspan="2" |''"Is it possible to cry so much you dehydrate yourself?"''<div align="right">—Karl Wildermuth</div>
|-
|
|'''The Last Human Light'''
|''"If every human somehow simply disappeared from the face of the Earth, how long would it be before the last artificial light source would go out?"''
<div align="right">—Alan</div>
|Radioactive waste that was mixed with glass will glow for centuries.
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
| rowspan="3" |
| rowspan="3" |'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
| colspan="2" |''"Given humanity’s current knowledge and capabilities, is it possible to build a new star?"''
<div align="right">—Jeff Gordon</div>
| rowspan="3" |
| rowspan="3"{{book|1|16}}
| rowspan="3" |
|-
| colspan="2" |''"What sort of logistic anomalies would you encounter in trying to raise an army of apes?"''<div align="right">—Kevin</div>
|-
| colspan="2" |''"If people had wheels and could fly, how would we differentiate them from airplanes?"''<div align="right">—Anonymous</div>
|-
|
|'''Orbital Submarine'''
|''"How long would a nuclear submarine last in orbit?"''
<div align="right">—Jason Lathbury</div>
|The submarine could last as long as it was in space.
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
| colspan="2" |''"Would it be possible to stop a volcano eruption by placing a bomb (thermobaric or nuclear) underneath the surface?"''
<div align="right">—Tomasz Gruszka</div>
| rowspan="2" |
| rowspan="2"{{book|1|20}}
| rowspan="2" |
|-
| colspan="2" |''"A friend of mine is convinced that there is sound in space. There isn’t, right?"''<div align="right">—Aaron Smith</div>
|-
|
|'''Human Computer'''
|''"How much computing power could we achieve if the entire world population stopped whatever we are doing right now and started doing calculations? How would it compare to a modern-day computer or smartphone?"''
<div align="right">—Mateusz Knorps</div>
|The combined computing power of all devices surpassed the power of all humans in 1977.
|
|{{book|1|21}}
|
|-
|
|'''Common Cold'''
|''"If everyone on the planet stayed away from each other for a couple of weeks, wouldn't the common cold virus be wiped out?"''
<div align="right">—Sarah Ewart</div>
|No, because immunocompromised individuals can harbor rhinoviruses for a long time. Only a few hosts are needed for the virus to spread again.
|
|{{book|1|25}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
| colspan="2" |''" If global warming puts us in danger through temperature rise, and super-volcanos put us into danger of global cooling, shouldn’t those two dangers balance each other out?"''
<div align="right">—Florian Seidl-Schulz</div>
| rowspan="2" |
| rowspan="2"{{book|1|27}}
| rowspan="2" |
|-
| colspan="2" |''"How fast would a human have to run in order to be cut in half at the bellybutton by a cheese-cutting wire?"''<div align="right">—Jon Merrill</div>
|-
|
|'''No More DNA'''
|''"This may be a bit gruesome, but... if someone's DNA suddenly vanished, how long would that person last?"''
<div align="right">—Nina Charest</div>
|You could live for several hours or days before succumbing to infection or systemwide organ failure.
|
|{{book|1|29}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
| colspan="2" |''"What is the total nutritional value (calories, fat, vitamins, minerals, etc.) of the average human body?"''
<div align="right">—Justin Risner</div>
| rowspan="2" |
| rowspan="2"{{book|1|31}}
| rowspan="2" |
|-
| colspan="2" |''"What temperature would a chainsaw (or other cutting implement) need to be at to instantly cauterize any injuries inflicted with it?"''<div align="right">—Sylvia Gallagher</div>
|-
|
|'''Flyover States'''
|''"Which US state is actually flown over the most?"''
<div align="right">—Jesse Ruderman</div>
|Virgina, due to a large amount of flights from Toronto to the Carribbean/South America.
|
|{{book|1|33}}
|
|-
| rowspan="3" |
| rowspan="3" |'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
| colspan="2" |''"In Thor the main character is at one point spinning his hammer so fast that he creates a strong tornado. Would this be possible in real life?"''
<div align="right">—Davor</div>
| rowspan="3" |
| rowspan="3"{{book|1|36}}
| rowspan="3" |
|-
| colspan="2" |''"If you saved a whole life’s worth of kissing and used all that suction power on one single kiss, how much suction force would that single kiss have?"''<div align="right">—Jonatan Lindström</div>
|-
| colspan="2" |''"How many nuclear missiles would have to be launched at the United States to turn it into a complete wasteland?"''<div align="right">—Anonymous</div>
|-
|
|'''Self-Fertilization'''
|''"I read about some researchers who were trying to produce sperm from bone marrow stem cells. If a woman were to have sperm cells made from her own stem cells and impregnate herself, what would be her relationship to her daughter?"''
<div align="right">—R Scott LaMorte</div>
|The resulting child would have many genetic defects, effectively being inbred.
|
|{{book|1|37}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
| colspan="2" |''"A toxin blocks the ability of the nephron tubule reabsorption but does not affect filtration. What are the possible short-term effects of this toxin?"''
<div align="right">—Mary</div>
| rowspan="2" |
| rowspan="2"{{book|1|40}}
| rowspan="2" |
|-
| colspan="2" |''"If a Venus fly trap could eat a person, about how long would it take for the human to be fully de-juiced and absorbed?"''<div align="right">—Jonathan Wang</div>
|-
|
|'''Lost Immortals'''
|''"If two immortal people were placed on opposite sides of an uninhabited Earthlike planet, how long would it take them to find each other? 100,000 years? 1,000,000 years? 100,000,000,000 years?"''
<div align="right">—Ethan Lake</div>
|Depending on strategy and terrain, a few years to a few decades.
|
|{{book|1|42}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
| colspan="2" |''"Could you survive a tidal wave by submerging yourself in an in-ground pool?"''
<div align="right">—Chris Muska</div>
| rowspan="2" |
| rowspan="2"{{book|1|46}}
| rowspan="2" |
|-
| colspan="2" |''"If you are in free fall and your parachute fails, but you have a Slinky with extremely convenient mass, tension, etc., would it be''
possible to save yourself by throwing the Slinky upward while holding on to one end of it?"<div align="right">—Varadarajan Srinivasan</div>
|-
|
|'''Sparta'''
|''"In the movie 300 they shoot arrows up into the sky and they seemingly blot out the Sun. Is this possible, and how many arrows would it take?"''
<div align="right">—Anna Newell</div>
|300 arrows per second with densely packed archers could blot out 99% of the Sun's light. If the Sun were low in the horizon, you could more effectively block sunlight with less arrows.
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|''"How many Lego bricks would it take to build a bridge capable of carrying traffic from London to New York? Have that many Lego bricks been manufactured?"''
<div align="right">—Jerry Petersen</div>
|Enough bricks have been manufactured to connect London and New York, but the bridge would not be structurally sound enough to stay together for very long.
|
|{{book|1|51}}
|
|-
| rowspan="3" |
| rowspan="3" |'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
| colspan="2" |''"What is the probability that if I am stabbed by a knife in my torso that it won’t hit anything vital and I’ll live?"''
<div align="right">—Thomas</div>
| rowspan="3" |
| rowspan="3"{{book|1|54}}
| rowspan="3" |
|-
| colspan="2" |''"If I were on a motorbike and do a jump off a quarter pipe ramp, how fast would I need to be moving to safely deploy and land using the parachute?"''<div align="right">—Anonymous</div>
|-
| colspan="2" |''"What if every day, every human had a 1 percent chance of being turned into a turkey, and every turkey had a 1 percent chance of''
being turned into a human?"<div align="right">—Kenneth</div>
|-
|
|'''Weightless Arrow'''
|''"Assuming a zero-gravity environment with an atmosphere identical to Earth's, how long would it take the friction of air to stop an arrow fired from a bow? Would it eventually come to a standstill and hover in midair?"''
<div align="right">—Mark Estano</div>
|It would stop at about 5 to 10 kilometers.
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|''"If all the lightning strikes happening in the world on any given day all happened in the same place at once, what would happen to that place?"''
<div align="right">—Trevor Jones</div>
|It would create a crater the size of a basketball court.
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
| colspan="2" |''"What if everyone in Great Britain went to one of the coasts and started paddling? Could they move the island at all?"''
<div align="right">—Ellen Eubanks</div>
| rowspan="2" |
| rowspan="2"{{book|1|64}}
| rowspan="2" |
|-
| colspan="2" |''"Are fire tornadoes possible?"''<div align="right">—Seth Wishman</div>
|-
|
|'''Neutron Bullet'''
|''"If a bullet with the density of a neutron star were fired from a handgun (ignoring the how) at the Earth's surface, would the Earth be destroyed?"''
<div align="right">—Charlotte Ainsworth</div>
|No. The bullet would fall through the ground and stop in the center of the Earth.
|
|{{book|1|67}}
|
|-
| rowspan="2" |
| rowspan="2" |'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
| colspan="2" |''"What if I swallow a tick that has Lyme disease? Will my stomach acid kill the tick and the borreliosis, or would I get Lyme disease from the inside out?"''
<div align="right">—Christopher Vogel</div>
| rowspan="2" |
| rowspan="2"{{book|1|68}}
| rowspan="2" |
|-
| colspan="2" |''"Assuming a relatively uniform resonant frequency in a passenger jet, how many cats, meowing at what resonant frequency of said jet,''
would be required to “bring it down”?"<div align="right">—Brittany</div>
|-
|
|'''Richter 15'''
|''"What if a Richter magnitude 15 earthquake were to hit America at, let's say, New York City? What about a Richter 20? 25?"''
<div align="right">—Alec Farid</div>
|A magnitude 15 earthquake would destroy the Earth.
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|First off, a human can't do this. Assuming a normal crash rate, an average human driver wouldn't make it past Mars without crashing. Even truck drivers, a field where the crash rate is much lower, wouldn't make it past Jupiter. Using a self-driving car, however, would negate this. It would take an incredibly long time, on the order of approximately 480 quadrillion years if you're driving at a steady pace of 65 miles per hour. Assuming you want to keep your car functional, you would go through 30 quintillion oil changes. Assuming a reasonable 33 MPG highway mileage, the amount of gasoline needed would be similar to the Moon in size. You would also need 10^17 tons of snacks. Entertainment would be another issue. If every person who has ever lived had 150 friends/acquaintances, listening to a real-time podcast of someone's life, all from the perspective of a different friend/acquaintance, you would need to re-watch them all 150 times to make it to the edge of the observable universe. Once you get there, there would be no Earth to come back to.
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|The optimal method for using the least amount of pigeons would be to use a multi-stage system of sorts. A group of pigeons would lift you about 10 feet, before dropping you as another group swoops in to take their place. However, even with this system, the number of pigeons would be large enough that the Earth would be pulled into the pigeons by gravity instead of the other way around. In other words, if you want to get to the top of Australia's Q1 skyscraper, use an elevator.
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die Having-no-Blood-and-Being-Full-of-Molten-Uranium Syndrome. Also known as Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical. The temperature to turn oxygen solid is very low, and even with proper insulation it would still cause frostbite. It would also be very weak and very soft, and would sublimate quickly, basically making it useless for all intensive purposes, except for PR.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We would see a balloon slowly flying away, fading into the sky. It would be quite pretty. Though next time we should probably attach a transmitter.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|If you positioned yourself in just the right way, and used an umbrella to catch as much lift as possible, you could be launched hundreds of feet in the air. Unsurprisingly, you'd receive severe burns and almost certainly die. Surprisingly, however, you would be far from the first person to get severe burns from the geysers.
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|<big><big>{{notice2|'''Most of these are too short!'''}}</big></big> <big><big>{{notice|'''If you own the second book, please help us by explaining more!'''}}</big></big> Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass. However, due to the increase in density in the mantle, you would actually gain weight until you've removed about half the Earth's diameter.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|Assuming density stayed the same when you shrunk Jupiter down, the biggest issue would be that the gravity that keeps its hot interior together would no longer exist, essentially creating a giant fireball that would turn into a mushroom cloud, and eventually spread out into a big cool cloud. This would, effectively, be the reverse of the formation of Jupiter, which started as clouds before being compressed into a small hot ball.
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|It's not a completely ridiculous idea, but the most practical issue is that you'd have to extend the roughly mile-long runway several times more to take full advantage of it. Using the proposed rope-and-cliff system, you'd need to use a thousand ton weight dropped at the height of a super tall skyscraper - of course, if you used something heavier, like the 80,000-ton Washington Monument, you wouldn't need to drop it as far.
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|Theoretically, in a section of Yellowstone National Park, where {{w|Zone of Death (Yellowstone)|a jury would have to be formed from a non-existent population}}. In practice, you'd definitely still be prosecuted for committing a murder there.
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit Earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|Even though the meteor is slow, it's still very big. The impactor would not create a crater, but would instead create a weird effect which makes the rock flow like water, creating a large 'space dirt pancake' about the same diameter as the Chicxulub impact Crater. If {{w|Jurassic Park}} were a real place, it could certainly cause a dinosaur extinction over there, if dropped on it.
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|Earth would (mostly) be fine. Mercury, uranium, neptunium, plutonium, and cerium would all replace the old planets. Changes are as follows:
*Pluto would be visible to the naked eye
*Ceres would be visible to the naked eye
*Mercury would be visible to the naked eye
*Uranus would be a fairly bight star
*''When Neptune hits your eye, like a big pizza pie, that's an x-ray..''
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|An average tire sheds about 1.6 liters of rubber over the course of its lifetime (from new to bald). If all tire rubber stuck to the road, it would rise by about a third of a millimeter per year. However, most tire rubber shavings are small enough to drift through the air, or for rain and wind to wash them off the road. Tire rubber is more than enough to cause environmental disruption and it's one of the leading causes of microplastics in our oceans.
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain? Also, Colorado has a lot of people in it.
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No, as the leading theory is that Jupiter has a solid core. Shooting a bullet through the center would simply cause the bullet to collide with the core of the planet.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
| While the match would light initially due to the small amount of oxidizer in a matchhead (typically {{w|potassium chlorate}}, in a safety match), it would quickly dissipate due to the lack of oxygen to titan's atmosphere.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|It would work, but the water level would slowly lower back to sea level over time. However, this process can be accelerated by whale farts. I am not joking.
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|Its 'resolution' would be over 500 million times better than a normal human eye. It would be able to see the color of a shirt worn on Mars. It could also see incredibly far objects, such as some of the most distant galaxies that haven't been {{w|redshift}}ed to the point of being infrared. However, a planet-sized eye would be inconvenient, as it would certainly go blind from the Sun and could be damaged from nearby stars as well.
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the Sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|You would likely see many new and undiscovered species. You would also be incredibly cold as the freezing waters of the deep would cool the glass. Getting up would be another problem entirely. If you didn't use an elevator, you could break the glass. That would create a geyser, accelerating you upwards at lethal G-forces. Once you reach the surface, you would fly high into the air before crashing back down into the ocean. Also, you would be heralded as a hero by a lot of marine biologists.
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the Sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the Earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine. While one may picture a scenario similar to ''The Core'', the difference would only be noticed long after you're gone, so you don't really need to worry about it :)
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature. Also, do you automatically add 'in a vacuum' to anything your son says?
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche. Since the peak of {{w|Mount Everest}} is above the clouds, it is very dry there. For a snowball to grow, wet snow is required. The result would be similar to rolling a hamburger down.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|There would be direct tissue damage, and other horrifying effects.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occurred to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Elizabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|Due to the free hydrogen molecules floating around in there, it would taste incredibly sour. It would also smell like burning rubber, as stars are made up of the same components.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|This is unrealistic right from the start. This assumes the total dog population is 2 billion, which is well above current estimates. A timeline of major events and milestones is listed below.
*After one year, there are enough dogs for everyone to have at least one.
*After 5 years, every human has an average of 6 or 7 dogs.
*After 11 years, Disney releases ''101 Dalmations per Capita'', after there are 101 dogs per person
*After 15 years, the first dogs die, but the death is fully insignificant.
*After 20 years, dogs would only be about 1 meter apart on average.
*After 25-30 years, the dogs begin to stack.
*At about 40 years, the exponential growth is "stable". The population is multiplying by about 1.6578 each year.
*After 65 years, the population of dogs reaches 1 mol
*After 110 years, the dogs start to undergo relativistic collapse
*After 150 years, the dogs are bigger than the solar system.
*After 197 years, the expansion of the dog sphere surpasses 1''c''
*After 200 years, the dogs reach sirius.
*After 250 years, the dogs envelop the milky way.
*After 330 years, the dogs reach the edge of the observable universe.
*After 417 years, Disney releases ''10<sup>101</sup> Dalmations.''
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the Sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|The Sun will cool to room temperature in about 20 billion years. However, survival would not be an option.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
| This is a continuation of {{what if|13|13: Laser Pointer}}. Adding even more power than the end of that article would heat the air so much that the lasers would stop themselves long before reaching the Moon. Even if we managed to get them to hit the Moon, the plasma created would be so hot that it would stop anyway.
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

<span id="Editors"><big><big>'''Editors'''</big></big></span> ㅤ ''[[#Article index|(jump back to table)]]''

These templates are used in this table: {{tl|what if}}, {{tl|What If}}, {{tl|book}}, {{tl|blog}}.

<big>'''Add YouTube video'''</big>

<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the Moon?'''''</font>}}

<big>'''Add book chapter'''</big>

For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}
<noinclude>
<big>'''Link to a ''what if?'' article'''</big>

On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

<big>'''Add name of reader who asked the question.'''</big>

Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

''[[#Article index|(jump back to table)]]''
<span id="bottom"></span>
{| style="border: 1px solid {{{border|gray}}}; background-color: {{{color|#fdffe7}}};"
|rowspan="2" style="vertical-align:middle;" | {{{{{|safesubst:}}}#ifeq:{{{2}}}|alt|[[File:What If Barnstar.jpeg|100px]]|[[File:What If Barnstar.jpeg|100px]]}}
|rowspan="2" |
|style="font-size: x-large; padding: 0; vertical-align: middle; height: 1.1em;" | '''The What If? Project Barnstar'''
|-
|style="vertical-align: middle; border-top: 1px solid gray;" | <div style="font-family: Cormorant Garamond"><span style="font-size:5pt;color:black">

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted!

----

Great Job to everyone who helped out on this project! If you helped out explain the articles or build the table, feel free to sign here: '''[[User:42.book.addict|<span style="font-family:Cormorant Garamond;font-size:9pt;color:#A9C6CA">42.book.addict</span>]]<sup>[[User talk:42.book.addict|<span style="font-family:Cormorant Garamond;font-size:6pt;color:#516874">Talk to me!</span>]]</sup>''' 17:44, 14 February 2025 (UTC), [[User:WriterArtistCoder|WriterArtistCoder]]<sup>[[User talk:WriterArtistCoder|talk to me]]</sup> 21:56, 11 March 2025 (UTC), [[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 15:53, 12 March 2025 (UTC) --'''''[[User:DollarStoreBa'al |<span style="font-family:Atomic Age;font-size:12pt;color:red;">DollarStoreBa'al</span>]]<sup>[[User talk:DollarStoreBa'al |'''''Converse''''']]</sup>[[DSBContribs |'''''My life choices''''']] 23:30, 14 June 2025 (UTC)

[[Category:What If?| 9]]{{xkcdmeta}}

2766: Helium Reserve

2025-06-11T02:13:03Z

WriterArtistCoder: Joke is very simple; condensed explanation, cut alternate expl that did not involve inhaling helium

{{comic
| number = 2766
| date = April 21, 2023
| title = Helium Reserve
| image = helium_reserve_2x.png
| imagesize = 347x253px
| noexpand = true
| titletext = The government has been trying to sell off the Federal Helium Reserve for a few years now, but the sale has been on hold while they try to figure out how to explain this situation to buyers.
}}

==Explanation==

The {{w|National Helium Reserve}} is a reserve of helium owned by the United States government, which holds over 1 billion cubic meters of helium for a number of critical scientific and industrial applications.

Helium is also used and sold for more frivolous applications. One of the most well-known is to fill party balloons. Since helium is much lighter than air, balloons filled with it will float. Additionally, because sound propagates differently through helium than through air, inhaling some of the gas will cause a person's voice to sound much higher.

[[Cueball]] was hired to manage the Reserve, and apparently inhaled all of the helium to make his voice change, meaning that even answering this officer's question would reveal what he'd been doing.

The notion of one person inhaling the entire helium reserve is, of course, ludicrous (not to mention the fact that inhaling helium deprives a person of oxygen).

Due to rising prices, most helium now sold for balloons is mixed with air. This lowers cost, but makes balloons less buoyant, and dramatically reduces the impact of the gas on your voice. Since inhaling balloons has become ineffective, when Cueball is given access to a vast supply of undistilled helium, he can no longer help himself.

The title text addresses the real-world privatization of the Reserve, first selling off the helium itself and then the sale of the storage facility. This has been a drawn out process because of political disagreements, and it will now be much more difficult as there is no helium left to sell.

==Transcript==
:[An officer wearing a peaked cap is talking to Cueball. There is a "National Strategic Helium Reserve" building in the background.]
:Officer: You were in charge of guarding the national helium reserve. So where did it go?!

:[Caption below the panel:]
:Unfortunately, there's no good way for me to answer this question out loud.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Characters with hats]]

3074: Push Notifications

2025-04-10T20:56:30Z

WriterArtistCoder: Graphed the turtle

{{comic
| number = 3074
| date = April 9, 2025
| title = Push Notifications
| image = push_notifications_2x.png
| imagesize = 277x347px
| noexpand = true
| titletext = NOTIFICATION: Now dismissing a head of the Notification Hydra… NOTIFICATION: Success! You have dismissed a head of the Notification Hydra!<br><br><span style="color:grey">Different title text:</span> :3
}}
To experience the interactivity of the game, visit the {{xkcd|3074|original comic}}.

==Explanation==
{{incomplete|Please write a better overall explanation and explain the other functions of the comic. If you see any comic images that haven't been uploaded yet, please download and add them! Also, a table might not be the most space-efficient way to display the different comic images; a gallery of images might be better.}}
This interactive comic is the 15th [[:Category:April fools' comics|April Fools' Day]] comic released by Randall, just over a week late. It uses {{w|push notifications}} to change the comic image over time and make other statements. A table of notifications can be seen at [[3074: Push Notifications/Table of Notifications]].

After viewing the comic for the first time, there is a sequence of notifications rendered over the comic itself. After clicking through these, you are provided with two buttons: one labeled "Emergency Stop" which will halt all notifications, and one labeled "Silence notifications at a cost" which will silence notifications at the cost of notifying two random people.

If you press silence notifications too much the laptop blows up. This happens because the POST request that is sent to the server is returned by a 500 Internal Server Error. This is a real error.

Up to 7 clickable cats periodically spawn (nonrandomly) all over the comic, including one on the edge of the Emergency Stop button.

Notification types include:
* Asking you to type a word, with further notifications to be sent whenever someone chooses the same word as you. Following this up changes the comic pane to a comic-style input dialogue with a space for the word and a submit button.
** Upon providing a word, a notification informs you that you will then receive notifications (of the form "Someone else has selected the word <Your Word>!"), and that your choice is permanent and cannot be changed.
** It is entirely possible to (mis-)submit a blank word, and to receive "Someone else has selected the word !" notifications.
* A few starter notifications about this comic, the successful sending of a notification of this comic, and the lack of another comic.
* An announcement that an old comic was posted, specifying a comic and its publication date.
* A "streak" notification counting the number of times you've clicked it. The message changes first every 10 clicks, then every 50 clicks (after 100) and then at increasing intervals, with the last new message name being at 2000 clicks. After every 50 clicks there is an offer to make future clicks count twice, making this a simple version of {{w|Cookie Clicker}}. If you choose to accept the offer by clicking on it, it will reset your clicks back to zero but makes all future clicks count double of the current click rate; you can also reject the offer by continuing to click on the click counter message. There are occasionally notifications encouraging you to keep clicking and "extend your streak," tempting you with "a free click to keep you going". After 400 clicks it will reset your clicks back to zero but makes all future clicks count four times.
** Early notifications encourage further clicking.
** Approaching a hundred, the messages grow more concerned and later start warning that the server will crash or has crashed.
** Above 750: "Are you just doing this to annoy me?"
** 1000-2000: "Are you just doing this to annoy you?"
** Above 2000: "I guess it worked"
* A "have you seen my cat?" notification which causes all the cats to spawn when clicked.
* Cat fact notifications that appear when a cat is clicked, in reference to [https://i.kym-cdn.com/photos/images/original/000/241/756/e6e.png this exchange].
* Various "erroneous errors" with a warning triangle, some with just flavor text, some corresponding to changes in the comic image.
** A "gravity malfunction" indicating a change to the floating image.
** An "Error 40¾" HTTP malfunction (with {{w|Zalgo text}} on the error code) indicating a change to the tentacle image.
** "I forgot whether I'm the server or the client."
** An error for not enough errors.
** An error for too many errors.
** A Kernel Panic indicating the Kernel can't remember what number comes after 38
** A notification claiming that your computer ballast needs emptying, along with the computer room being flooded
** "Your computer has encountered an error" indicating a change to the fire image.
** Error 418: {{w|Hyper Text Coffee Pot Control Protocol#Commands and replies|I'm a teapot}}.
** An error with the "computer size limiter", indicating the enlarged laptop image.
* "Zoom notifications" including numeric coordinates, sometimes prefixed with "oh look!"; plotting these coordinates creates an image that appears to be a turtle, apparently a reference to [[1416: Pixels]].
* "Constant reminders" stating what some constant will be "at the tone". (This is in reference to time-of-day phone services, largely obsolete since the popularization of the internet, which you could call to hear the exact time at a given tone.) There are also joke constants such as "your favorite number will be equal to 14," and some definitions are tautological or not related to the actual value of the constant. Constants include
** The silver ratio (1 + the square root of 2)
** The golden ratio (half of 1 + the square root of 5)
** Pi (the ratio between a circle's circumference and radius, and half of Tau)
** Zero (a real number)
** Your favorite number (14)
** The luminosity of the sun (L☉)
** {{w|Euler's constant}}
** "We are currently experiencing 3600±1 seconds per hour. Changes to this rate will be announced six months in advance." - Referencing {{w|Leap second#Procedure|standard Leap Second procedure}}
* A notification that offers to provide weather alerts for your location, which leads into a series of notifications asking whether you live in a named city. If none of the cities that it knows are selected, your location is set to the summit of {{w|Mount Washington}}.
* A reminder that the Earth spins at 1 rpd (rotation per day).
* A statement near an hour or half-hour time that the current time is five-o-clock somewhere.
* An invitation to subscribe to the "What if?" YouTube channel
* A notification with the heading "System Log" that reads (INFO): A user has paused notifications
* A reminder to comment and subscribe, leading to one of various Wikipedia pages, including: {{w|Talk:Mathematics}}, {{w|Talk:Romance}}, {{w|Talk:Language}}, (presumably, as the fourth of the stated topics [[xkcd]] is about) {{w|Talk:Sarcasm}}, {{w|Talk:Alarm_fatigue}}, {{w|Talk:Boneless}}, {{w|Talk:Sitting}}, {{w|Category talk:Unix text editors}}, {{w|Talk:Robot}}, {{w|Talk:Jamming avoidance response}}, {{w|Talk:Squircle}}, {{w|Talk:Like}}, {{w|Talk:Drafting linen}}, {{w|Talk:Hot dog}}, {{w|Talk:Goomba}}, {{w|Talk:Tidal locking}}, {{w|Talk:Multiple unit}}, {{w|Talk:Flag semaphore}}, {{w|Talk:Stoating}}, {{w|Talk:Roseate_spoonbill}}, {{w|Talk:Teleportation}}.
* A "{{w|Carriage return|Carriage Return}} Line Feed", referencing the Windows standard of storing line returns as a carriage return character followed by a line feed (newline) character. However, the xkcd Carriage Return Line Feed is instead a news feed concerning the next stop on a supposed "Carriage Return Line" of a train system. The announcements are all related to stations on the {{w|London Underground}}, including the use of the phrase "{{w|Mind the gap}}".

The title text references the {{w|Lernaean Hydra}}, a multi-headed serpent-like monster from Greek mythology. In many stories, such as {{w|Labours_of_Hercules#Second:_Lernaean_Hydra|the second labour of Hercules}}, when one of its heads was cut off, two heads would grow in its place, resulting in more heads than before. Something similar has happened in the title text itself: there was a notification that was requested to be dismissed, and it created two more notifications notifying the user of the status of the dismissal.

The subdirectory where the images and scripts for this comic are stored is titled 'marconi,' which is likely a reference to the Italian engineer and inventor of the same name, {{w|Guglielmo Marconi}}, who is credited with inventing the radio, and did much work in the field of early communication systems.

Clicking the "Emergency Stop" button allows you to either restart the full game or to subscribe just to notifications for new comics.

===Gallery of comic images===
<gallery class="mw-collapsible mw-collapsed" widths=100px>
File:3074_normal.png|Cueball sitting at his desk, with his laptop.
File:3074_big_laptop.png|Cueball sitting at his desk, with a very large laptop.
File:3074_plant_small.png|Cueball sitting at his desk, with a small potted plant.
File:gallery_placeholder.png|Cueball sitting at his desk, with a squirrel in the pot.
File:3074_plant_big.png|Cueball sitting at his desk, with a much larger plant that has clearly outgrown the pot, at least vertically.
File:gallery_placeholder.png|Two images with the larger plant that also have cats in the leaves.
File:gallery_placeholder.png|Cueball sitting at his desk, with a cat in the foreground near the point of view.
File:3074_flooding.png|The room flooded 2/3 of the way up the desk. Cueball is still sitting with his laptop.
File:3074_sailboat.png|The same flooding, with a miniature sailboat behind Cueball.
File:gallery_placeholder.png|The same flooding, with a cat face behind Cueball.
File:gallery_placeholder.png|The same flooding, with a shark fin on the far side of the desk, facing toward Cueball.
File:gallery_placeholder.png|Cueball kneeling on the chair, which is raised up higher than the desk, and leaning over to use the laptop.
File:gallery_placeholder.png|Cueball sitting at the desk, which has been extended behind his laptop like a long meeting table.
File:gallery_placeholder.png|No Cueball, only the chair, desk, and laptop.
File:gallery_placeholder.png|Cueball using the laptop on his lap, with no desk.
File:gallery_placeholder.png|Cueball with a squirrel on his head.
File:gallery_placeholder.png|A squirrel sitting at the desk, seemingly using the laptop.
File:gallery_placeholder.png|Cueball standing on top of the laptop keyboard.
File:gallery_placeholder.png|Cueball sitting at the desk, wearing a wizard hat.
File:3074_floor.png|Cueball sitting on the floor behind the desk.
File:3074_tentacles.png|Cueball sitting in his chair, shielding his face from a tentacle coming from the computer screen.
File:3074_cat.png|The cat that appears after returning to the comic window after leaving it idle for long period of time. It has a unique title text of ":3".
File:zoom_turtle.png|The turtle that appears when graphing coordinates from the Zoom Notifications.
</gallery>

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[Cueball sits at a desk in an office chair. He is typing on a computer.]
:[Gray message boxes with a small circled “x” at the top right corner are shown:]
:Happy April 1st (observed)!
:To celebrate, we were excited to introduce a new xkcd.com feature: push notifications for new comics!
:Unfortunately, this feature has gone horribly wrong.
:Until further notice, we are asking people ''NOT'' to sign up for new comic notifications.
:Frankly, we recommend not even clicking on any notifications to learn more.
:<span style="color:gray">''Click this notification to learn more!''</span> (a circled arrow is shown)

:“Push notifications for new comics” sounds like a simple feature, right?
:There’s a nice API for browser notifications. xkcd updates three times a week.
:So you just send a notification for each update, right?
:That’s what we thought, too.
:<span style="color:gray">''Click to continue!''</span> (a circled arrow is shown)

:[To the side of the comic frame is a big, horizontal hexagonal stop sign]
:Sign: Emergency STOP
:Below the sign: <span style="color:red">''Halt ALL notifications and forget everything''</span>
:The good news is that we did build a button to stop xkcd new comic notifications.
:You can press this button at any time and the system will stop sending you notifications.
:The nightmare will be over and the server will forget you ever existed.
:This part definitely works.
:<span style="color:gray">''The rest of the system does <u>NOT</u> work.''</span> (a circled arrow is shown)

:We’re sorry.
:We don’t know how things went so wrong.
:The system is sending more than three notifications a week. A <b><u>LOT</u></b> more.
:We cannot recommend signing up for xkcd new comic notifications at this time.
:<span style="color:gray">''Click here to ignore the warnings.''</span> (a circled arrow is shown)

:No, really.
:Our notification system may send a large number of very real system notifications.
:These may flood your browser, displace other notifications, and cause problems.
:<big>⚠️<b>DO NOT ENABLE XKCD NEW COMIC NOTIFICATIONS</b>⚠️</big>
:<span style="color:gray">''Yeah, I get it, but I definitely want to enable xkcd new comic notifications.''</span> (a circled arrow is shown)

:Are you sure?
:<span style="color:gray">''Yes!''</span> (a circled arrow is shown)
:Absolutely sure?
:<span style="color:gray">''YES!!''</span> (a circled arrow is shown)
:To enable push notifications on mobile you need to add xkcd.com to your home screen.

:<span style="background-color:#FFD3D3;color:#8B0000">''Click here to subscribe to xkcd notifications''</span>

:[Initial static image shows Cueball sat on an office chair at a desk using a laptop computer. A notification 'window' is speech-bubbled above the computer]
:[Grey notification box, header:] April 1<sup>st</sup> (Observed)
:[Notification box, further text:] Open xkcd.com to view.
:Laptop: [Warning sign.]

:[When viewed live, various xkcd-style popover notifications appear, each can be dismissed or (usually the last on every page) invited to press an 'onwards'-style button.]

:[First page of messages]
:Happy April 1<sup>st</sup>! To celebrate, we were excited to introduce a new xkcd.com feature: Push Notifications for new comics!
:Unfortunately, this feature has gone horribly wrong.
:Until further notice, we are asking people NOT to sign up for new comic notifications.
:Frankly, we recommend not even clicking on any notifications to learn more.
:[Notification with 'onwards button':] ''Click on this notification to learn more''

:[Upon choosing to continue, further messages appear, replacing any prior ones left open]
:"Push Notifications for new comics" sounds like a simple feature, right?
:There's a nice API for browser notifications, xkcd updates three times a week.
:So you just send a notification for each upafte, right?
:That's what we thought, too.
:[Notification with 'onwards button':] ''Click on this notification to continue''

:[Next set of popover messages]
:The good news is that we did build a button to STOP xkcd new comic notifications.
:You can press this button at any time and the system will stop sending you notifications.
:The nightmare will be over and the server will forget you ever existed.
:This part definitely works.
:[Notification with 'onwards':] ''The rest of the system does <u>not</u> work.''
:[To the right of the comic frame, a red, octagonal button has white text upon it:]Emergency Stop
:[Below the button is red text:] Halt all notifications and forget everything

:[Next set of popovers, "stop" button remains permanently so long as you continue]
:We're sorry.
:We didn't know how things went so wrong.
:The system is sending more than three notifications at this time.
:['Onwards' notification:] ''Click here to ignore the warnings''

:[Next set.]
:No, really.
:Our notification system may send a large amount of very real system notifications.
:These may flood your browser, displace other notifications, and cause problems.
:[Text bookended by warning triangles:] Do not enable xkcd new comic notifications
:['Onwards':] Yeah, I get it, but I definitely want to enable xkcd new comic notifications

:[Just two popovers, initially]
:Are you sure?
:['Onwards':] Yes
:[On clicking onwards, two more appear below]
:Absolutely sure?
:['Onwards':] Yes!!
:[On clicking, a further popover]
:[Red-tinted 'onwards'-style popover with warnings:] Click here to subscribe to xkcd notifications.

:[...something appeared then dissappeared...]
:[Genuine(?) browser dialogue activated:] xkcd.com wants to send you notifications. Block / Allow

:[If allowed, one more popover in the original style]
:Success!!
:[Below the Emergency Stop button, an oval gray button appears labeled in white:] Silence notifications at a cost
:[Below that, in grey text:]Temporarily pause your notifications at the cost of notifying two random people.

:[Further changes include the contents of the pane, whether Cueball is sat at the laptop, whether the laptop is larger, or a pot-plant, whether there are cats in the frame, outside the frame, sat on the Stop buttons, whether Cueball is sat on a large cat instead of an office chair...]
{{comic discussion}}
[[Category:Interactive comics]]
[[Category:April fools' comics]]

File:zoom turtle.png

2025-04-10T20:55:09Z

WriterArtistCoder: /* Summary */

== Summary ==
Turtle made up of 378 Zoom Notifications plotted from [[3074]] on [https://www.desmos.com/calculator/sl1ocs3ido Desmos]. More pixels are sure to be added

== Licensing ==
{{XKCD file derived}}

File:zoom turtle.png

2025-04-10T20:54:11Z

WriterArtistCoder: Turtle made up of Zoom Notifications plotted from 3078

== Summary ==
Turtle made up of Zoom Notifications plotted from [[3078]]
== Licensing ==
{{XKCD file derived}}

2016: OEIS Submissions

2025-03-26T21:29:40Z

WriterArtistCoder: /* Explanation */ Why it's impossible to list ascending integers

<noinclude>{{distinguish|1624: 2016}}</noinclude>
{{comic
| number = 2016
| date = July 6, 2018
| title = OEIS Submissions
| image = oeis_submissions.png
| titletext = SUB[59]: The submission numbers for my accepted OEIS submissions in chronological order
}}

==Explanation==

The {{w|OEIS}} is the [https://oeis.org/ Online Encyclopedia of Integer Sequences], a listing of hundreds of thousands of sequences of integers, generally of real mathematical interest, such as {{w|prime number}}s ([https://oeis.org/A000040 A000040]) or {{w|Armstrong number}}s ([https://oeis.org/A005188 A005188]). They would not be interested in the personal or idiosyncratic sequences proposed by Randall, though they do have the [https://oeis.org/A000053 list of subway stops on the New York City Broadway line (IRT #1)], perhaps because a NY Times article mentioned that they don't. The OEIS wiki gives [https://oeis.org/wiki/Examples_of_what_not_to_submit examples of sequences that were rejected] and even mentions xkcd.

Randall is trying to put his integer sequences on the OEIS website, including making OEIS reveal its password.
;sub[43] - All integers which do not appear in the example terms of another OEIS sequence
:Every OEIS sequence lists several example terms to demonstrate the content of said sequence. This request wants to list all integers which are ''not'' used as examples elsewhere. Any numbers used as example terms for this sequence are not counted, so this list is not self-disqualifying. It is well-defined at any given time. Like many other OEIS sequences, it has infinitely many terms (more precisely, it includes all integers except a finite number). However, it may change at any time, whenever a new sequence or a new example is added to the OEIS. If included, it would therefore have to be constantly updated.
:Such integers are sometimes called "{{w|Interesting number paradox|uninteresting numbers}}" in mathematical terms, and attempts have been made to count them. The list changes, but [http://math.crg4.com/uninteresting.html#note4 in July 2009] it began 11630, 12067, 12407, 12887, 13258...
;sub[44] - Integers in increasing order of width when printed in Helvetica
:This sequence is not uniquely defined as it depends on the specific version of the {{w|Helvetica}} font used, its point size, the software used to render it (e.g. kerning algorithm), the handling of equal widths by the sorting algorithm and possibly other parameters. Also, all digits usually have the same width, with the exception of the sequence "11", which is a tiny bit narrower because a kerning pair exists in Helvetica. Without an additional tie-breaker for equal width numbers, the order is: 1 to 9 in no particular order, 11, 10 and 12 to 99 in no particular order and so on; for a particular choice of parameters the first 50 terms might be: 1, 9, 6, 2, 8, 5, 0, 7, 3, 4, 11, 61, 71, 91, 21, 51, 81, 41, 31, 19, 13, 18, 10, 12, 15, 16, 14, 17, 69, 63, 68, 79, 60, 62, 65, 73, 78, 99, 93, 98, 66, 70, 72, 75, 29, 90, 92, 95, 23, 28...
:Despite all of the above issues, and as a direct response to this comic, a well-defined version of this sequence was [https://oeis.org/A316600 added to the OEIS].
;sub[45] - The digits of Chris Hemsworth's cell phone number
:An attempt to {{w|Phishing|phish}} the phone number of actor {{w|Chris Hemsworth}}. Whilst there ''is'' a loophole to this request (the correct ordering of the digits isn't specified), knowing what digits there are in the first place may help narrow down what his number is.
;sub[46] - All integers, in descending order
:To list all integers in descending order, you would have to begin at the largest integer, but there is no largest integer, so this is impossible. It is equally impossible to list all integers in ''ascending'' order, for that matter, since one would need to start at negative infinity.
:On the other hand, [https://oeis.org/A001477 A001477] is the sequence of all nonnegative integers in ascending order, as there is the smallest nonnegative integer. Also, [https://oeis.org/A001057 A001057] is the sequence of all integers, but in canonical order (i.e. by increasing absolute value).
;sub[47] - The digits of the OEIS serial number for this sequence
:This sequence is only important tautologically.
;sub[48] - 200 terabytes of nines
:This submission appears to be a joke on common video game limits for, e.g., currency or ammunition, in which the maximum a player can carry is one less than a power of 10. This sequence would be entirely useless, as there is no mental effort required to conceive a list that consists only of a single repeated term, however arbitrarily large. The only apparent reason to make the request is the novelty of making the OEIS waste 200 terabytes of their storage; to give a comparison, [https://phys.org/news/2016-05-math-proof-largest-terabytes.html this very large math proof from 2016] is also 200 terabytes, and requires a supercomputer to hold it in its entirety.<br/>
:200 terabytes is equal to 2 × 10<sup>14</sup> bytes. In UTF-8, each ASCII character, including control characters such as ␂ (start of text) and ␍ (carriage return), can be represented by a single byte. If the list is presumed to be formatted as "␂9␍9␍9 ... 9␍9␃", the first term would take up 3 bytes, and all other terms would take up 2 bytes. Assuming Randall wants the file size to be 200 terabytes ''minimum'', the resulting list would be a minimum of 1 × 10<sup>14</sup>, or 100 trillion, terms long. However, the OEIS could utilize some form of data compression to store the terabytes of data in maybe a few kilobytes.
:Curiously, OEIS does in fact contain an entry that lists "[https://oeis.org/A010734 all nines]" which contains this proposal as a subsequence.
;sub[49] - The decimal representation of the bytes in the root password to the Online Encyclopedia of Integer Sequences server
:This would give any user the password to OEIS. Anyone can {{w|Troll (slang)|easily forecast}} what happens next. Perhaps the idea is to hack OEIS on the premise that accepting this sequence will force OEIS staff to populate it.
;sub[59] (title text) - The submission numbers for my accepted OEIS submissions in chronological order
:This would only be useful to Randall. If all of his submissions have been rejected, this would be an empty set. However, if this submission is accepted, the set would, by definition, include at least one number (except that this would not be known at the time of submission). Thus, as in the Russell Paradox, this set would be out of date as soon as it was accepted, since the set of accepted submission numbers would change at that point.
:Currently, it has two known numbers: 44 and 48. Other sequences suggested by Randall not listed (1-42 and 50-58, and an unknown number of submissions from 60 onwards) may or may not be accepted, but since those sequences are not known it is not known whether they were accepted.

==Transcript==
:SUB[43]: All integers which do not appear in the example terms of another OEIS sequence
:SUB[44]: Integers in increasing order of width when printed in Helvetica
:SUB[45]: The digits of Chris Hemsworth's cell phone number
:SUB[46]: All integers, in descending order
:SUB[47]: The digits of the OEIS serial number for this sequence
:SUB[48]: 200 terabytes of nines
:SUB[49]: The decimal representation of the bytes in the root password to the Online Encyclopedia of Integer Sequences server

:[Caption below the panel:]
:OEIS keeps rejecting my submissions

{{comic discussion}}

[[Category:Math]]
[[Category:Comics featuring real people]]

what if? articles

2025-03-11T21:56:43Z

WriterArtistCoder: Signed the project barnstar

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].

</noinclude>==Article index==
<big>'''The ''what if?'' index has been completely rewritten and rebuilt, thanks to a TON of work by [[Talk:What If? chapters|so many people]]!'''<br>We still need to finish a few things tho! </big> --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 15:57, 15 February 2025 (UTC)

<span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> ''[[What If? chapters#bottom|Click here]] to jump to a summary of the improvements!

<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things left to do: '''</big></span>  ''(If you need help editing the table, check out the ''[[What If? chapters#Editors|Editors section]]''! It includes a simple summary of the templates' documentations.)''

*We mostly only need to work on the explanations now! Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Need to add almost all the questions from the first [[What If? (book)|''What If?'' book]] and a summary of his answers! See about second half of the table.
*Randall has released the new "''[[What If? 10th Anniversary Edition|10th Anniversary Edition]]''" of the books. [[What If? 10th Anniversary Edition|'''Add info''']] about the new book and [[:Category:Books|update the old book pages]]!

<div style="display:none;">__TOC__</div>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.
<noinclude>{{incomplete|The incomplete answers below will look like this.<br>There are about '''80''' incomplete explanations below!<br>}}</noinclude>

{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in...  ''(click to sort)''
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{what if|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate by about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{what if|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{what if|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{what if|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|A {{w|mole (unit)|mole}} is such a high number this would be tricky. They would condense into a pressurized sphere of meat that would freeze and occasionally explode from gases.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{what if|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{what if|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{what if|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{what if|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{what if|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{what if|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|
|-
|[[File:Droppings.png|100px]]
|'''{{what if|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|Assuming you are in an area with a reasonable number of birds, you'd have to wait about 195 years.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{what if|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{what if|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{what if|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{what if|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|It would warm a small patch of the ocean and not do much. With a bigger bomb, it could destroy the world.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{what if|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{what if|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements. Plus, it’d still need food for nutrients just like real plants.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{what if|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O'Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{what if|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{what if|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the {{w|Oh-My-God particle}}), the Earth would explode with enough force to obliterate the entire Solar System.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{what if|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14|Machine-Gun Jetpack}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{what if|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{what if|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{what if|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{what if|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but it would make some really cool patterns due to various factors such as the Earth’s rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|{{book|22|2025|03|04|YL2VNtus4xk|What if the wise men kept walking after Jesus’s birth?}}
|
|-
|[[File:Leap Seconds.png|100px]]
|'''{{what if|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|The only real way to do this is by hitting Earth with asteroids; all other ideas would be too difficult or wouldn’t work. With 50,000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds (mostly because it would deliver the energy of about one dinosaur-killer asteroid every couple days, wiping out life on Earth quite quickly)
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{what if|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|The world population would continue to grow, though 40% more slowly. Pilots, drivers, and surgeons would die en route and mid-operation, but these would be comparable to usual accident rates and handled fairly easily.
|{{blog|27|2013|01|08|1d late}}
|
|
|-
|[[File:Steak Drop.png|100px]]
|'''{{what if|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked, as the steak will have to pass through parts of the atmosphere that are freezing cold and the parts of the fall where heat is being applied are more likely to char and disintegrate the steak than cook it.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{what if|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{what if|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{what if|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{what if|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{what if|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|The sea level would fall by about 6 microns, slightly more than the diameter of a strand of spider silk. However, since the oceans are currently rising at about 3.3 millimeters per year due to global warming, the water would be back up to its original average level in 16 hours.
|{{blog|33|2013|02|19}}
|
|
|-
|[[File:what if? Twitter.png|100px]]
|'''{{what if|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10^46 meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{what if|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{what if|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
|
|
|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{what if|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{what if|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|We could possibly spend a ton of money and resources to get a probe to Voyager. Getting it back is another story.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{what if|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|It doesn’t really work like that: at high enough speeds to knock the goalie back they’d both just splatter.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{what if|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{what if|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|Not even by a bit, because the North American plate is just too heavy for people to make an impact in its movement.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{what if|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|95 minutes on certain Norewgian and Finnish highways. (A similar concept has been explored in comic [[162: Angular Momentum]].)
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{what if|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|No, not even if we change the requirements to just the passengers staying alive.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{what if|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Aroldis Chapman could throw a golf ball to a height of sixteen giraffes.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{what if|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{what if|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|The finger holes would collapse and then not much would happen.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{what if|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They would see pretty much nothing with regular telescopes. The detection could be possible with radio technology.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{what if|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{what if|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|
|-
|[[File:Extreme Boating.png|100px]]
|'''{{what if|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the “third sound” as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{what if|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{what if|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{what if|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|Hundreds of thousands of years, so you'll need a bigger portal. As their basins are cut off, many shallow seas and a few deep trenches remain, leaving much of Earth still covered with water. Massive, unpredictable environmental changes would probably wipe out mankind. If they didn't, the Dutch would take over the world, no longer preoccupied with preventing their lands from flooding as they are now.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{what if|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|The water would fill the {{w|Valles Marineris}}, eventually leaving only {{w|Olympus Mons}} and some other small islands. The sea would ultimately freeze over, become covered in dust, and migrate to permafrost at the poles. In the meantime, the Netherlands would colonize Mars through the portal.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{what if|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances are 1 in 40000, but you might want to be careful, as there's also a 1 in a billion chance that the person you called just murdered someone.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{what if|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{what if|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{what if|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{what if|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|You'd need six printers, but if using an ink printer, costs would rack up to $500,000 a month, dwarfing paper and maintenance costs. You'd need to file away past versions in case they were reverted (restored), which would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{what if|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{what if|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{what if|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|{{notice|Too short}}About 16,000 feet. You would use about ten tanks, or 2500 ft<sup>3</sup>, of helium. A larger balloon could just be used as a parachute, no helium needed.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{what if|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|{{notice|Too short}}A 4.5 km thick layer of punch cards would bury the Earth, or triple the height ice sheets reached during the last ice age.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{what if|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|A nudist would survive for five hours, then succumb to the cold. With a good coat, one would survive for seven, even plausibly eight, until reaching the low-oxygen {{w|death zone}} and suffocating. However, your corpse would outlast the Earth as it was swallowed by the Sun.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{what if|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|{{notice|Too short + needs rephrasing}}As of October 2013, the bottom of the timeline would be eight million kilometers tall, and a prediction that Twitter activity might start to die down in about five years.
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{what if|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|500 mph winds are more than fast enough to pick up a person and propel them through the air. In fact, 500 mph winds are so fast that they only occur on Earth in extreme situations like the immediate vicinity of an erupting volcano or the aftermath of a major asteroid impact at which point wind speed would only be one of many dangers to human survival.
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{what if|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|After a month, the gain would be measurable but within the normal variation of gravity. After a year, it would be more prominent at 5%. Humans could survive with difficulty for a decade, but even in specially-built environments, they would succumb within a century as air itself became toxic from atmospheric pressure. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{what if|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|{{notice|Too short, give context}}Yes, but gravity would vary wildly in different parts of your body, and if you were sprinting, you could accidentally tumble into a nauseous, swinging orbit or even outer space.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{what if|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|This depends on if Facebook stays popular or declines in popularity over time. In the former case, the dead would only outnumber the living well into the 2100s; while in the latter, this happens around 2060. Facebook can afford to keep all our data indefinitely, but there are ethical questions.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{what if|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|{{notice|Unclear, needs rephrasing (also, too short)}}With a normal mower ten hours a day, about a quarter of a square kilometer. The world's fastest lawnmower at top speed 24/7 could mow an adult male cougar's home range.
|{{blog|70|2013|11|05}}
|
|
|-
|[[File:Stirring Tea.png|100px]]
|'''{{what if|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|No, not really, It would take at least 1 horsepower (a lot for a person stirring), and reducing the power would just make it cool faster. Stirring faster and faster would cause a vacuum to form and stirring to become ineffective.
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{what if|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|The most well-document candidates are six Apollo astronauts who ventured behind the dark side of the Moon. Antarctic explorers and pre-colonialism Polynesian explorers have a shot, but there's no good evidence of specific people who beat the Apollo record. Astronauts Mike Collins and Al Worden said they were not at all lonely, the latter even enjoying his soltitude.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{what if|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|Neutrinos are subatomic particles that barely interact with the universe at all, so it's hard to imagine a scenario where they could harm you, even in a supernova. But at about 2.3 AU, or a little farther than Mars is from the Sun, even the neutrinos would be dense enough to kill you.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{what if|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|{{notice|Why is that? Also, needs rephrasing}}0.0000005%. Additionally, most water molecules you drink have never been drunk by another human in history, but almost all have been drunk by a dinosaur.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{what if|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|{{notice|Too short, article also talks about other things}}"Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{what if|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|About the 1500s, as the population of active English writers reached a few hundred, meaning you would never be able to catch up (using the average word count for a few famous authors as a baseline). You might not want to read them, anyways.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{what if|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|{{notice|Too short. Explain why this tall, at what age, why it's impossible, etc.}}10 to 12 meters.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{what if|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|One large-sized one or two small-sized ones per day.
|{{blog|78|2014|01|07}}
|{{book|2|7|T. Rex Calories}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{what if|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|{{notice|Too short. Also, explain the joke.}}It would be 1/100,000 as strong as a proper cup of tea. However, New Zealanders could make themselves tea in Frying Pan Lake.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{what if|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|''Human'' viruses would fill about ten oil drums. ''All'' viruses would form a wet heap the size of a small mountain, with a texture resembling pus or meat slurry.
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{what if|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|{{notice|Explain the second-to last sentence and the bullet spinning.}}It would be pretty difficult, but with a high enough hot air balloon (or cliff) you could do it. The main issue would be aiming.
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{what if|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|{{notice|Elaborate on the laser surgery thing?}}The baseball thing is much harder. You'd have to hit it out of the atmosphere, and a baseball is too small to do that. In terms of precision, it depends on what comparison you use.
|{{blog|82|2014|02|05|1d late}}
|
|
|-
|[[File:Star Sand.png|100px]]
|'''{{what if|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|Although red giants aren't as common as Sun-like stars or red dwarfs, they would form a stretch of gravel that went on for miles due to their large relative volume. 99% of all stars would form a small patch of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{what if|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|That there isn't enough paint to go around. The total estimated amount of produced paint, a trillion litres, is only enough to paint as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{what if|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|{{notice|Awkward phrasing, include the rocket thing?}}Not with normal human swings. If you cheat using a potato cannon, a bag a little smaller than the Moon. Meanwhile, you'd hit a hole in one at every golf course in the world.
|{{blog|85|2014|02|25}}
|
|
|-
|[[File:Far-Traveling Objects.png|100px]]
|'''{{what if|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|There are a few different frames of reference you can look at, but in normal terms Mariner 10 has traveled much farther than Voyager 1. It's travelled a couple of light-days around the Sun, while the Voyager probes have only travelled a dozen light-hours.
|{{blog|86|2014|03|04}}
|
|
|-
|[[File:Enforced by Radar.png|100px]]
|'''{{what if|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Intense enough to cause a medium sized nuclear explosion. Better to just carry a sign.
|{{blog|87|2014|03|11}}
|
|
|-
|[[File:Soda Sequestration.png|100px]]
|'''{{what if|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|Enough soda to cover Earth with ten layers of cans.
|{{blog|88|2014|03|18}}
|
|
|-
|[[File:Tungsten Countertop.png|100px]]
|'''{{what if|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|{{notice|Too short}}It would be vapourized before it got close to the Sun.
|{{blog|89|2014|03|25}}
|
|
|-
|[[File:Great Tree, Great Axe.png|100px]]
|'''{{what if|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|The seas would be a little bigger than the Pacific Ocean. Trees can't grow taller than about 130 meters naturally, and would physically crush itself if above a few kilometers tall. Ignoring these restraints, the tree would be about 75 km tall with trunk diameter of 2 km. Ignoring human size restraints, the person would be close to 3 km tall. The axe would be about 500 meters long and relatively the size of a flimsy hatchet. It may take a few weeks to chop down the tree and the impact would create a tsunami that probably wouldn't wipe out the human race, but would be likely the deadliest single disaster in our history.
|{{blog|90|2014|04|03|2d late}}
|
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|-
|[[File:Faucet Power.png|100px]]
|'''{{what if|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|Small hydroelectric dam in the bathtub would yield about $0.25 per month of electricity, but the best option would probably be to bottle and sell your tap water, yielding about $38 million per year at $1.50 per bottle.
|{{blog|91|2014|04|08|2d early}}
|
|
|-
|[[File:One-Second Day.png|100px]]
|'''{{what if|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
|
|-
|[[File:Windshield Raindrops.png|100px]]
|'''{{what if|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Fast enough so you would need a speedometer in scientific notation.
|{{blog|93|2014|04|22}}
|
|
|-
|[[File:Billion-Story Building.png|100px]]
|'''{{what if|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|{{notice|Too short}}First of all, it would not stand under its own weight. Also, it would be many times the distance the Earth is from the Moon.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|{{book|21|2025|02|11|Z_xJ40QXu7Q|What if you built a billion-story building?}}
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{what if|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|
|{{blog|95|2014|05|06}}
|
|
|-
|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{what if|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|{{notice|Needs rephrasing.}}They would not be able to pay off the debt, even if they forced humanity to work as slaves from now until the stars die. None of the most valuable things on Earth, even in huge quantities, could've paid off the debt.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
|
|-
|[[File:Burning Pollen.png|100px]]
|'''{{what if|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
|
|
|-
|[[File:Blood Alcohol.png|100px]]
|'''{{what if|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|Drinking all of the blood (5 liters) of a very drunk person (BAC 0.40) would cause you to both ingest about as much ethanol as a pint of beer and commit murder. Drinking blood is unpleasant and can make you very sick.
|{{blog|98|2014|05|27}}
|{{book|2|42}}
|
|-
|[[File:Starlings.png|100px]]
|'''{{what if|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|{{notice|Too short}}Enough to make a black hole.
|{{blog|99|2014|06|03}}
|
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|-
|[[File:WWII Films.png|100px]]
|'''{{what if|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|
|{{blog|100|2014|06|11|1d late}}
|
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|-
|[[File:Plastic Dinosaurs.png|100px]]
|'''{{what if|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|
|{{blog|101|2014|06|18}}
|{{book|2|26}}
|
|-
|[[File:Keyboard Power.png|100px]]
|'''{{what if|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|{{notice|Too short}}Less than enough energy to microwave a burrito.
|{{blog|102|2014|06|25}}
|
|
|-
|[[File:Vanishing Water.png|100px]]
|'''{{what if|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|
|{{blog|103|2014|07|02}}
|
|
|-
|[[File:Global Snow.png|100px]]
|'''{{what if|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|
|{{blog|104|2014|07|09}}
|{{book|2|59}}
|
|-
|[[File:Cannibalism.png|100px]]
|'''{{what if|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|{{notice|Too snarky. Explain the article.}}Depends, if you’re the only one trying out this new diet, maybe a week before you get caught. If the entire world brooms in, about 32 months.
|{{blog|105|2014|07|16}}
|
|
|-
|[[File:Ink Molecules.png|100px]]
|'''{{what if|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|You'd use about 100,000,000,000,000,000 molecules.
|{{blog|106|2014|07|23}}
|
|
|-
|[[File:Letter to Mom.png|100px]]
|'''{{what if|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|
|{{blog|107|2014|07|30}}
|
|
|-
|[[File:Expensive Shoebox.png|100px]]
|'''{{what if|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|{{notice|A little too vague.}}There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000.
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
|
|-
|[[File:Into the Blue.png|100px]]
|'''{{what if|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|{{notice|Too short. Why? Also, explain the last sentence}}Most of the time it would not hit anything.
|{{blog|109|2014|08|20}}
|
|
|-
|[[File:Walking New York.png|100px]]
|'''{{what if|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|{{notice|Too short}}Yes, in around 30 years, but you'd end up in prison.
|{{blog|110|2014|08|27}}
|
|
|-
|[[File:All the Money.png|100px]]
|'''{{what if|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|The only thing to do would be to make a swimming pool, as it is unlikely anybody else would agree with your claims to all the money and property.
|{{blog|111|2014|09|02|1d early}}
|
|
|-
|[[File:Balloon Car.png|100px]]
|'''{{what if|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
|
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|-
|[[File:Visit Every State.png|100px]]
|'''{{what if|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
<div align="right">—as discussed by Stephen Von Worley on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ '''''Data Pointed''''']
|{{notice|Need to add the other ways you can do it}}In just over 6 hours, in 5 satellite orbits.
|{{blog|113|2014|09|24}}
|
|
|-
|[[File:Antimatter.png|100px]]
|'''{{what if|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|{{notice|Too short}}Our existence would end, but much slower than in most other situations, from outer-space gas and meteorites.
|{{blog|114|2014|10|01}}
|
|
|-
|[[File:Into the Sun.png|100px]]
|'''{{what if|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|{{notice|Too short. Explain why you'd be fine/vaporised}}You would not be warmed if you went to the surface. The core, on the other hand, would vaporize you.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{what if|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{what if|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
|
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|-
|[[File:Physical Salary.png|100px]]
|'''{{what if|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|{{notice|This is obvious. Explain every scenario.}}A normal person would not get buried. A CEO, on the other hand, would be in trouble.
|{{blog|118|2014|10|30}}
|
|
|-
|[[File:Laser Umbrella.png|100px]]
|'''{{what if|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|{{notice|This is obvious. Explain why and the main issues.}}It would be very complicated, not worth it, and would probably make everything around you catch fire.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{what if|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
|
|
|-
|[[File:Frozen Rivers.png|100px]]
|'''{{what if|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
|
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|-
|[[File:Lava Lamp.png|100px]]
|'''{{what if|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
|
|-
|[[File:Fairy Demographics.png|100px]]
|'''{{what if|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
|
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|-
|[[File:Lunar Swimming.png|100px]]
|'''{{what if|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
|
|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{what if|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|It would take two hours and 20 minutes.
|{{blog|125|2015|01|15}}
|
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|-
|[[File:Stairs (What If?).png|100px]]
|'''{{what if|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|{{notice|Too short}}A week or two for a professional stair-climber. Half a day by motorcycle.
|{{blog|126|2015|01|22}}
|
|
|-
|[[File:Tug of War.png|100px]]
|'''{{what if|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|
|{{blog|127|2015|01|28|1d early}}
|
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|-
|[[File:Zippo Phone.png|100px]]
|'''{{what if|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
|
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|-
|[[File:Black Hole Moon.png|100px]]
|'''{{what if|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|{{notice|What if it did happen in space age? Too short.}}It would not have a big impact unless it happened during the space age.
|{{blog|129|2015|02|12}}
|
|
|-
|[[File:Snow Removal.png|100px]]
|'''{{what if|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|The flamethrower is more practical because microwaves don't heat ice very well. The microwave beam would require the power output of three aircraft carriers, and the flamethrower would have a gas mileage of 17 feet per gallon.
|{{blog|130|2015|02|19}}
|
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|-
|[[File:Microwaves.png|100px]]
|'''{{what if|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|{{notice|A bit too short, explain more.}}Use a lower power level, stir your food partway through microwaving, and let it sit for a few minutes before you eat it.
|{{blog|131|2015|02|27|1d late}}
|
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|-
|[[File:Hotter than Average.png|100px]]
|'''{{what if|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|{{notice|Explain, what's a water average?}}There is a water average. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
|
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|-
|[[File:Flagpole.png|100px]]
|'''{{what if|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|
|{{blog|133|2015|03|17|3d late}}
|
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|-
|[[File:Space Burial.png|100px]]
|'''{{what if|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|
|{{blog|134|2015|03|28|4d late}}
|
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|-
|[[File:Digging Downward.png|100px]]
|'''{{what if|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|
|{{blog|135|2015|04|05|1d late}}
|
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|-
|[[File:Spiders vs. the Sun.png|100px]]
|'''{{what if|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|{{notice|Maybe too short? Explain why.}}The Sun. But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
|
|-
|[[File:New Horizons.png|100px]]
|'''{{what if|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
|
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|-
|[[File:Jupiter Submarine.png|100px]]
|'''{{what if|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|
|{{blog|138|2015|07|28|7d late}}
|
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|-
|[[File:Jupiter Descending.png|100px]]
|'''{{what if|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|{{notice|Too short}}You would see... brown.
|{{blog|139|2015|08|04}}
|
|
|-
|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{what if|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
|
|-
|[[File:Sunbeam.png|100px]]
|'''{{what if|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|
|{{blog|141|2016|01|12|3m 18d late}}
|
|
|-
|[[File:Space Jetta.png|100px]]
|'''{{what if|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why?}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
|
|
|-
|[[File:Europa Water Siphon.png|100px]]
|'''{{what if|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
|
|
|-
|[[File:Saliva Pool.png|100px]]
|'''{{what if|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|For an Olympic pool, it would take you 8,345 years. In order to finish by the present day, you'd need to start during the invention of agriculture.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
|
|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{what if|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|
|{{blog|145|2016|02|09}}
|{{book|2|51}}
|
|-
|[[File:Stop Jupiter.png|100px]]
|'''{{what if|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|{{notice|Why?}}This can never happen, even if we were to throw Earth at Jupiter.
|{{blog|146|2016|02|16}}
|
|
|-
|[[File:Niagara Straw.png|100px]]
|'''{{what if|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|{{notice|Too short, last part.}}The International Niagara Committee, the International Niagara Board of Control, the International Joint Commission, the International Niagara Board Working Committee, and probably the Great Lakes–St. Lawrence River Adaptive Management Committee would get angry. The Earth would also be destroyed.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|
|-
|[[File:Eat the Sun.png|100px]]
|'''{{what if|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|
|{{blog|148|2016|03|12|8d late}}
|
|
|-
|[[File:Pizza Bird.png|100px]]
|'''{{what if|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|
|{{blog|149|2016|03|26|7d late}}
|
|
|-
|[[File:Tatooine Rainbow.png|100px]]
|'''{{what if|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|
|{{blog|150|2016|05|23|1m 21d late}}
|
|
|-
|[[File:Sun Bug.png|100px]]
|'''{{what if|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|
|{{blog|151|2016|07|21|1m 23d late}}
|
|
|-
|[[File:Flood Death Valley.png|100px]]
|'''{{what if|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|
|{{blog|152|2016|10|18|2m 21d late}}
|
|
|-
|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|{{notice|Please validate this! I'm not sure. Also, what's a peptide?}}For any peptides, 19 letters is the highest possible, that being the word "interdepartmentally". For naturally existing peptides in the human body, 8 letters is the highest known. Examples of 8 letters are: GRISETTE, DATELESS, REVERSAL.
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
|
|
|-
|[[File:Hide the Atmosphere.png|100px]]
|'''{{what if|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
|
|
|-
|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{what if|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
|
|
|-
|[[File:Toaster vs. Freezer.png|100px]]
|'''{{what if|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ My Brother, My Brother, and Me], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ Episode 343], discussing a Yahoo Answers question</div>
|
|{{blog|155|2017|02|28|13d late}}
|
|
|-
|[[File:Electrofishing for Whales.png|100px]]
|'''{{what if|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
|
|
|-
|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{what if|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
|
|-
|[[File:Hot Banana.png|100px]]
|'''{{what if|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
|
|
|-
|[[File:Hailstones.png|100px]]
|'''{{what if|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|{{notice|Too short. Explain air resistance as Randall does.}}There's no real chance of producing that big hail stones, but if they could be lethal even if staying indoors.
|{{blog|159|2022|07|05|1m 30d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|In addition to destroying global ocean circulation and creating an illegal naval blockade, this is definitely a violation of her rental car agreement. Also, organizing a fleet of a trillion rental cars would be difficult.
|{{blog|160|2022|09|06|1m 26d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|{{notice|Too short}}Australia owns most of the galaxy at certain points in time.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
|
|
|-
|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
|
|
|
|{{book|1|4}}
|
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|<big><big>{{notice2|'''All of these articles are missing the question, name of asker, and an explanation of the answer!'''}}</big></big>
|<big><big>{{notice|'''If you own the first book, please help us by adding them!'''}}</big></big>
|
|{{book|1|8}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
|
|
|
|{{book|1|12}}
|
|-
|
|'''The Last Human Light'''
|''"If every human somehow simply disappeared from the face of the Earth, how long would it be before the last artificial light source would go out?"''
<div align="right">—Alan</div>
|
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
|
|
|
|{{book|1|16}}
|
|-
|
|'''Orbital Submarine'''
|''"How long would a nuclear submarine last in orbit?"''
<div align="right">—Jason Lathbury</div>
|
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
|
|
|
|{{book|1|20}}
|
|-
|
|'''Human Computer'''
|
|
|
|{{book|1|21}}
|
|-
|
|'''Common Cold'''
|
|
|
|{{book|1|25}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
|
|
|
|{{book|1|27}}
|
|-
|
|'''No More DNA'''
|
|
|
|{{book|1|29}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
|
|
|
|{{book|1|31}}
|
|-
|
|'''Flyover States'''
|
|
|
|{{book|1|33}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
|
|
|
|{{book|1|36}}
|
|-
|
|'''Self-Fertilization'''
|
|
|
|{{book|1|37}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
|
|
|
|{{book|1|40}}
|
|-
|
|'''Lost Immortals'''
|
|
|
|{{book|1|42}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
|
|
|
|{{book|1|46}}
|
|-
|
|'''Sparta'''
|
|
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|
|
|
|{{book|1|51}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
|
|
|
|{{book|1|54}}
|
|-
|
|'''Weightless Arrow'''
|
|
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|
|
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
|
|
|
|{{book|1|64}}
|
|-
|
|'''Neutron Bullet'''
|
|
|
|{{book|1|67}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
|
|
|
|{{book|1|68}}
|
|-
|
|'''Richter 15'''
|
|
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|<big><big>{{notice2|'''All of these are too short!'''}}</big></big>
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|<big><big>{{notice|'''If you own the second book, please help us by explaining more!'''}}</big></big>
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die of Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We should have attached a transmitter as well.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain?
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No. Jupiter is bulletproof.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
|It would spark and then fizzle out.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine.
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature.
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|there would be direct tissue damage, and other horrifying effects. Side note: Do not attend Ms. Frizzle,s chemistry class.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occured to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Eliabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|It would smell like bleach or burning rubber, and would taste sour.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|in about 20 billion years, but you won't be able to physically touch it and survive.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
|
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

==Editors==
''[[#Article index|(jump back to table)]]''

===Add name of reader who asked the question.===
Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

===Add YouTube video===
<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

===Add book chapter===
For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}<noinclude>

===Link to a ''what if?'' article===
On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

''[[#Article index|(jump back to table)]]''
<noinclude>
<span id="bottom"></span>
{| style="border: 1px solid {{{border|gray}}}; background-color: {{{color|#fdffe7}}};"
|rowspan="2" style="vertical-align:middle;" | {{{{{|safesubst:}}}#ifeq:{{{2}}}|alt|[[File:What If Barnstar.jpeg|100px]]|[[File:What If Barnstar.jpeg|100px]]}}
|rowspan="2" |
|style="font-size: x-large; padding: 0; vertical-align: middle; height: 1.1em;" | '''The What If? Project Barnstar'''
|-
|style="vertical-align: middle; border-top: 1px solid gray;" | <div style="font-family: Cormorant Garamond"><span style="font-size:5pt;color:black">

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted!

----

Great Job to everyone who helped out on this project! If you helped out explain the articles or build the table, feel free to sign here: '''[[User:42.book.addict|<span style="font-family:Cormorant Garamond;font-size:9pt;color:#A9C6CA">42.book.addict</span>]]<sup>[[User talk:42.book.addict|<span style="font-family:Cormorant Garamond;font-size:6pt;color:#516874">Talk to me!</span>]]</sup>''' 17:44, 14 February 2025 (UTC), [[User:WriterArtistCoder|WriterArtistCoder]]<sup>[[User talk:WriterArtistCoder|talk to me]]</sup> 21:56, 11 March 2025 (UTC)

[[Category:What If?| 9]]{{xkcdmeta}}

what if? articles

2025-02-13T05:44:50Z

WriterArtistCoder: Added YouTube for 94: Billion-Story Building

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].

</noinclude>==Article index==
<big>'''After more than 3 weeks and a TON of work by [[Talk:What If? chapters|so many people]], the two ''what if?'' tables have finally been merged.'''</big> --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:17, 3 February 2025 (UTC)

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> '''All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].'''

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> '''Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted

<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things left to do: '''</big></span>  ''(If you need help editing the table, check out the ''[[What If? chapters#Editors|Editors section]]''! It includes a simple summary of the templates' documentations.)''

*We mostly only need to work on the explanations now! Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Finish adding the name(s) of the readers who asked each questions. It's easy! The instructions are in the ''[[What If? chapters#Editors|Editors section]]''!
*Need to add all the questions from the first [[What If? (book)|''What If?'' book]] and a summary of each answer!
*Randall has released a new book, "''[[What If? 10th Anniversary Edition|What If? 10th Anniversary Edition]]''". [[What If? 10th Anniversary Edition|'''Add info''']] about the new book and [[:Category:Books|update the old book pages]]!

<div style="display:none;">__TOC__</div>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.

{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in...  ''(click to sort)''
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{what if|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate by about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{what if|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{what if|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{what if|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|A {{w|mole (unit)|mole}} is such a high number this would be tricky. They would condense into a pressurized sphere of meat that would freeze and occasionally explode from gases.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{what if|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{what if|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{what if|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{what if|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{what if|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{what if|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|
|-
|[[File:Droppings.png|100px]]
|'''{{what if|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|Assuming you are in an area with a reasonable number of birds, you'd have to wait about 195 years.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{what if|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{what if|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{what if|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{what if|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|It would warm a small patch of the ocean and not do much. With a bigger bomb, it could destroy the world.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{what if|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{what if|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements. Plus, it’d still need food for nutrients just like real plants.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{what if|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O’Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{what if|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{what if|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the Oh My God Particle), the Earth would explode with enough force to obliterate the entire solar system.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{what if|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{what if|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{what if|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{what if|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{what if|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but it would make some really cool patterns due to various factors such as the Earth’s rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|
|-
|[[File:Leap Seconds.png|100px]]
|'''{{what if|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|With 50 000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds.
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{what if|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|The world population would continue to grow, though 40% more slowly. Pilots, drivers, and surgeons would die en route and mid-operation, but these would be comparable to usual accident rates and handled fairly easily.
|{{blog|27|2013|01|08|1d late}}
|
|
|-
|[[File:Steak Drop.png|100px]]
|'''{{what if|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{what if|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{what if|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{what if|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{what if|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{what if|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|Less than a human hair's width.
|{{blog|33|2013|02|19}}
|
|
|-
|[[File:what if? Twitter.png|100px]]
|'''{{what if|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10^46 meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{what if|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{what if|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
|
|
|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{what if|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{what if|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|We could possibly spend a ton of money and resources to get a probe to Voyager. Getting it back is another story.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{what if|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|It doesn’t really work like that: at high enough speeds to knock the goalie back they’d both just splatter.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{what if|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{what if|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|Not even by a bit, because the North American plate is just too heavy for people to make an impact in its movement.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{what if|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|95 minutes on certain Norewgian and Finnish highways. (A similar concept has been explored in comic [[162: Angular Momentum]].)
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{what if|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|No, not even if we change the requirements to just the passengers staying alive.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{what if|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Aroldis Chapman could throw a golf ball to a height of sixteen giraffes.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{what if|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{what if|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|The finger holes would collapse and then not much would happen.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{what if|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They would see pretty much nothing with regular telescopes. The detection could be possible with radio technology.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{what if|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{what if|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|
|-
|[[File:Extreme Boating.png|100px]]
|'''{{what if|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the Third Sound as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{what if|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{what if|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{what if|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|Hundreds of thousands of years, so you'll need a bigger portal. As their basins are cut off, many shallow seas and a few deep trenches remain, leaving much of Earth still covered with water. Massive, unpredictable environmental changes would probably wipe out mankind. If they didn't, the Dutch would take over the world, no longer preoccupied with preventing their lands from flooding as they are now.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{what if|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|The water would fill the {{w|Valles Marineris}}, eventually leaving only {{w|Olympus Mons}} and some other small islands. The sea would ultimately freeze over, become covered in dust, and migrate to permafrost at the poles. In the meantime, the Netherlands would colonize Mars through the portal.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{what if|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances are 1 in 40000, but you might want to be careful, as there's also a 1 in a billion chance that the person you called just murdered someone.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{what if|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{what if|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{what if|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{what if|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|You'd need six printers, but if using an ink printer, costs would rack up to $500,000 a month, dwarfing paper and maintenance costs. You'd need to file away past versions in case they were reverted (restored), which would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{what if|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{what if|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{what if|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|About 16,000 feet. You would use about ten tanks, or 2500 ft<sup>3</sup>, of helium. A larger balloon could just be used as a parachute, no helium needed.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{what if|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|A 4.5 km thick layer of punch cards would bury the Earth, or triple the height ice sheets reached during the last ice age.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{what if|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|A nudist would survive for five hours, then succumb to the cold. With a good coat, one would survive for seven, even plausibly eight, until reaching the low-oxygen {{w|death zone}} and suffocating. However, your corpse would outlast the Earth as it was swallowed by the Sun.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{what if|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|As of October 2013, the bottom of the timeline would be eight million kilometers tall, and a prediction that Twitter activity might start to die down in about five years. After the publication of this article, Twitter activity started declining in late 2022 after it was purchased by Elon Musk.
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{what if|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|500 mph winds would send you flying through the air. But don't worry about that. Instead, worry about is the thing that created the 500 mph winds. Odds are, that's what's going to kill you.
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{what if|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|After a month, the gain would be measurable but within the normal variation of gravity. After a year, it would be more prominent at 5%. Humans could survive with difficulty for a decade, but even in specially-built environments, they would succumb within a century as air itself became toxic from atmospheric pressure. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{what if|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|Yes, but gravity would vary wildly in different parts of your body, and if you were sprinting, you could accidentally tumble into a nauseous, swinging orbit or even outer space.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{what if|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|If Facebook petered out in the 2010s, the dead would surpass the living around 2065, but if it continued for generations, it would take until the mid-2100s.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{what if|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|With a normal mower ten hours a day, about a quarter of a square kilometer. The world's fastest lawnmower at top speed 24/7 could mow an adult male cougar's home range.
|{{blog|70|2013|11|05}}
|
|
|-
|[[File:Stirring Tea.png|100px]]
|'''{{what if|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|No, stirring the tea too fast would just make it splash everywhere.
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{what if|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|The most well-document candidates are six Apollo astronauts who ventured behind the dark side of the Moon. Antarctic explorers and pre-colonialism Polynesian explorers have a shot, but there's no good evidence of specific people who beat the Apollo record. Astronauts Mike Collins and Al Worden said they were not at all lonely, the latter even enjoying his soltitude.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{what if|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|About 2.3 AU, or a little farther than Mars is from the Sun, which is inside the star that created the supernova.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{what if|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|0.0000005%. Additionally, most water molecules you drink have never been drunk by another human in history, but almost all have been drunk by a dinosaur.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{what if|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|"Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{what if|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|About the 1500s, as the population of active English writers reached a few hundred. You might not want to read them, anyways.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{what if|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|10 to 12 meters.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{what if|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|One large-sized one or two small-sized ones per day.
|{{blog|78|2014|01|07}}
|{{book|2|7}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{what if|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|1/100,000 as strong as a proper cup of tea. However, New Zealanders could make themselves tea in Frying Pan Lake.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{what if|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|''Human'' viruses would fill about ten oil drums. ''All'' viruses would form a wet heap the size of a small mountain, with a texture resembling pus or meat slurry.
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{what if|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|It would be pretty difficult, but with a high enough hot air balloon (or cliff) you could do it. The main issue would be aiming.
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{what if|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|{{notice|Elaborate on the laser surgery thing?}}The baseball thing is much harder. You'd have to hit it out of the atmosphere, and a baseball is too small to do that. In terms of precision, it depends on what comparison you use.
|{{blog|82|2014|02|05|1d late}}
|
|
|-
|[[File:Star Sand.png|100px]]
|'''{{what if|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|Although red giants aren't as common as Sun-like stars or red dwarfs, they would form a stretch of gravel that went on for miles due to their large relative volume. 99% of all stars would form a small patch of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{what if|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|No, only about as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{what if|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|{{notice|Awkward phrasing, include the rocket thing?}}Not with normal human swings. If you cheat using a potato cannon, a bag a little smaller than the Moon. Meanwhile, you'd hit a hole in one at every golf course in the world.
|{{blog|85|2014|02|25}}
|
|
|-
|[[File:Far-Traveling Objects.png|100px]]
|'''{{what if|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|There are a few different frames of reference you can look at, but in normal terms Mariner 10 has traveled much farther than Voyager 1. It's travelled a couple of light-days around the sun, while the Voyagers have only travelled a dozen light-hours.
|{{blog|86|2014|03|04}}.
|
|
|-
|[[File:Enforced by Radar.png|100px]]
|'''{{what if|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Intense enough to cause a medium sized nuclear explosion. Better to just carry a sign.
|{{blog|87|2014|03|11}}
|
|
|-
|[[File:Soda Sequestration.png|100px]]
|'''{{what if|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|Enough soda to cover Earth with ten layers of cans.
|{{blog|88|2014|03|18}}
|
|
|-
|[[File:Tungsten Countertop.png|100px]]
|'''{{what if|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|{{notice|Too short}}It would be vapourized before it got close to the Sun.
|{{blog|89|2014|03|25}}
|
|
|-
|[[File:Great Tree, Great Axe.png|100px]]
|'''{{what if|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|
|{{blog|90|2014|04|03|2d late}}
|
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|-
|[[File:Faucet Power.png|100px]]
|'''{{what if|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|
|{{blog|91|2014|04|08|2d early}}
|
|
|-
|[[File:One-Second Day.png|100px]]
|'''{{what if|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
|
|-
|[[File:Windshield Raindrops.png|100px]]
|'''{{what if|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Fast enough so you would need a speedometer in scientific notation.
|{{blog|93|2014|04|22}}
|
|
|-
|[[File:Billion-Story Building.png|100px]]
|'''{{what if|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|First of all, it would not stand under its own weight. Also, it would be many times the distance the Earth is from the Moon.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|{{book|21|2025|02|11|Z_xJ40QXu7Q|What if you built a billion-story building?}}
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{what if|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|
|{{blog|95|2014|05|06}}
|
|
|-
|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{what if|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|They would not be able to pay off the debt, even if they forced humanity to work as slaves from now until the stars die.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
|
|-
|[[File:Burning Pollen.png|100px]]
|'''{{what if|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
|
|
|-
|[[File:Blood Alcohol.png|100px]]
|'''{{what if|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|
|{{blog|98|2014|05|27}}
|{{book|2|42}}
|
|-
|[[File:Starlings.png|100px]]
|'''{{what if|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|{{notice|Too short}}Enough to make a black hole.
|{{blog|99|2014|06|03}}
|
|
|-
|[[File:WWII Films.png|100px]]
|'''{{what if|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|
|{{blog|100|2014|06|11|1d late}}
|
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|-
|[[File:Plastic Dinosaurs.png|100px]]
|'''{{what if|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|
|{{blog|101|2014|06|18}}
|{{book|2|26}}
|
|-
|[[File:Keyboard Power.png|100px]]
|'''{{what if|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|{{notice|Too short}}Less than enough energy to microwave a burrito.
|{{blog|102|2014|06|25}}
|
|
|-
|[[File:Vanishing Water.png|100px]]
|'''{{what if|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|
|{{blog|103|2014|07|02}}
|
|
|-
|[[File:Global Snow.png|100px]]
|'''{{what if|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|
|{{blog|104|2014|07|09}}
|{{book|2|59}}
|
|-
|[[File:Cannibalism.png|100px]]
|'''{{what if|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|Depends, if you’re the only one trying out this new diet, maybe a week before you get caught. If the entire world brooms in, about 32 months.
|{{blog|105|2014|07|16}}
|
|
|-
|[[File:Ink Molecules.png|100px]]
|'''{{what if|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|100,000,000,000,000,000.
|{{blog|106|2014|07|23}}
|
|
|-
|[[File:Letter to Mom.png|100px]]
|'''{{what if|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|
|{{blog|107|2014|07|30}}
|
|
|-
|[[File:Expensive Shoebox.png|100px]]
|'''{{what if|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|{{notice|A little too vague.}}There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000.
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
|
|-
|[[File:Into the Blue.png|100px]]
|'''{{what if|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Most of the time it would not hit anything.
|{{blog|109|2014|08|20}}
|
|
|-
|[[File:Walking New York.png|100px]]
|'''{{what if|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|{{notice|Too short}}Yes, in around 30 years, but you'd end up in prison.
|{{blog|110|2014|08|27}}
|
|
|-
|[[File:All the Money.png|100px]]
|'''{{what if|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|The only thing to do would be to make a swimming pool, as it is unlikely anybody else would agree with your claims to all the money and property.
|{{blog|111|2014|09|02|1d early}}
|
|
|-
|[[File:Balloon Car.png|100px]]
|'''{{what if|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
|
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|-
|[[File:Visit Every State.png|100px]]
|'''{{what if|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
As discussed by Stephen von Worley on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ ''Data Pointed'']
|In just over 6 hours, in 5 satellite orbits.
|{{blog|113|2014|09|24}}
|
|
|-
|[[File:Antimatter.png|100px]]
|'''{{what if|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|{{notice|Too short}}Our existence would end, but much slower than in most other situations, from outer-space gas and meteorites.
|{{blog|114|2014|10|01}}
|
|
|-
|[[File:Into the Sun.png|100px]]
|'''{{what if|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface. The core, on the other hand, would vaporize you.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{what if|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{what if|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
|
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|-
|[[File:Physical Salary.png|100px]]
|'''{{what if|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|{{notice|This is obvious. Explain both scenarios.}}A normal person would not get buried. A CEO, on the other hand, would be in trouble.
|{{blog|118|2014|10|30}}
|
|
|-
|[[File:Laser Umbrella.png|100px]]
|'''{{what if|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It would be very complicated, not worth it, and would probably make everything around you catch fire.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{what if|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
|
|
|-
|[[File:Frozen Rivers.png|100px]]
|'''{{what if|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
|
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|-
|[[File:Lava Lamp.png|100px]]
|'''{{what if|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
|
|-
|[[File:Fairy Demographics.png|100px]]
|'''{{what if|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
|
|
|-
|[[File:Lunar Swimming.png|100px]]
|'''{{what if|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
|
|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{what if|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|Two hours and 20 minutes.
|{{blog|125|2015|01|15}}
|
|
|-
|[[File:Stairs (What If?).png|100px]]
|'''{{what if|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|A week or two for a professional stair-climber. Half a day by motorcycle.
|{{blog|126|2015|01|22}}
|
|
|-
|[[File:Tug of War.png|100px]]
|'''{{what if|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|
|{{blog|127|2015|01|28|1d early}}
|
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|-
|[[File:Zippo Phone.png|100px]]
|'''{{what if|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
|
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|-
|[[File:Black Hole Moon.png|100px]]
|'''{{what if|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|It would not have a big impact unless it happened during the space age.
|{{blog|129|2015|02|12}}
|
|
|-
|[[File:Snow Removal.png|100px]]
|'''{{what if|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|The flamethrower is more practical because microwaves don't heat ice very well. The microwave beam would require the power output of three aircraft carriers, and the flamethrower would have a gas mileage of 17 feet per gallon.
|{{blog|130|2015|02|19}}
|
|
|-
|[[File:Microwaves.png|100px]]
|'''{{what if|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|Use a lower power level, stir your food partway through microwaving, and let it sit for a few minutes before you eat it.
|{{blog|131|2015|02|27|1d late}}
|
|
|-
|[[File:Hotter than Average.png|100px]]
|'''{{what if|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|{{notice|Explain, what's a water average?}}There is a water average. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
|
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|-
|[[File:Flagpole.png|100px]]
|'''{{what if|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|
|{{blog|133|2015|03|17|3d late}}
|
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|-
|[[File:Space Burial.png|100px]]
|'''{{what if|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|
|{{blog|134|2015|03|28|4d late}}
|
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|-
|[[File:Digging Downward.png|100px]]
|'''{{what if|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|
|{{blog|135|2015|04|05|1d late}}
|
|
|-
|[[File:Spiders vs. the Sun.png|100px]]
|'''{{what if|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun. But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
|
|-
|[[File:New Horizons.png|100px]]
|'''{{what if|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
|
|
|-
|[[File:Jupiter Submarine.png|100px]]
|'''{{what if|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|
|{{blog|138|2015|07|28|7d late}}
|
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|-
|[[File:Jupiter Descending.png|100px]]
|'''{{what if|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|{{notice|Too short}}You would see... brown.
|{{blog|139|2015|08|04}}
|
|
|-
|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{what if|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
|
|-
|[[File:Sunbeam.png|100px]]
|'''{{what if|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|
|{{blog|141|2016|01|12|3m 18d late}}
|
|
|-
|[[File:Space Jetta.png|100px]]
|'''{{what if|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why?}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
|
|
|-
|[[File:Europa Water Siphon.png|100px]]
|'''{{what if|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
|
|
|-
|[[File:Saliva Pool.png|100px]]
|'''{{what if|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|For an Olympic pool, 8,345 years; you would need to start during the invention of agriculture to finish by the present day.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
|
|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{what if|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|
|{{blog|145|2016|02|09}}
|{{book|2|51}}
|
|-
|[[File:Stop Jupiter.png|100px]]
|'''{{what if|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|{{notice|Why?}}This can never happen, even if we were to throw Earth at Jupiter.
|{{blog|146|2016|02|16}}
|
|
|-
|[[File:Niagara Straw.png|100px]]
|'''{{what if|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|{{notice|Too short, last part.}}The International Niagara Committee, the International Niagara Board of Control, the International Joint Commission, the International Niagara Board Working Committee, and probably the Great Lakes–St. Lawrence River Adaptive Management Committee would get angry. The Earth would also be destroyed.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|
|-
|[[File:Eat the Sun.png|100px]]
|'''{{what if|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|
|{{blog|148|2016|03|12|8d late}}
|
|
|-
|[[File:Pizza Bird.png|100px]]
|'''{{what if|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|
|{{blog|149|2016|03|26|7d late}}
|
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|-
|[[File:Tatooine Rainbow.png|100px]]
|'''{{what if|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|
|{{blog|150|2016|05|23|1m 21d late}}
|
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|-
|[[File:Sun Bug.png|100px]]
|'''{{what if|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|
|{{blog|151|2016|07|21|1m 23d late}}
|
|
|-
|[[File:Flood Death Valley.png|100px]]
|'''{{what if|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|
|{{blog|152|2016|10|18|2m 21d late}}
|
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|-
|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
|
|
|-
|[[File:Hide the Atmosphere.png|100px]]
|'''{{what if|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
|
|
|-
|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{what if|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
|
|
|-
|[[File:Toaster vs. Freezer.png|100px]]
|'''{{what if|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ My Brother, My Brother, and Me], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ Episode 343], discussing a Yahoo Answers question</div>
|
|{{blog|155|2017|02|28|13d late}}
|
|
|-
|[[File:Electrofishing for Whales.png|100px]]
|'''{{what if|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
|
|
|-
|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{what if|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
|
|-
|[[File:Hot Banana.png|100px]]
|'''{{what if|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
|
|
|-
|[[File:Hailstones.png|100px]]
|'''{{what if|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|There's no real chance of producing that big hail stones, but if they could be lethal even if staying indoors.
|{{blog|159|2022|07|05|1m 30d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|
|{{blog|160|2022|09|06|1m 26d late}}
|
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|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|{{notice|Too short}}Australia owns most of the galaxy at certain points in time.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
|
|
|-
|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
|
|
|
|{{book|1|4}}
|
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|8}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
|
|
|
|{{book|1|12}}
|
|-
|
|'''The Last Human Light'''
|
|
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
|
|
|
|{{book|1|16}}
|
|-
|
|'''Orbital Submarine'''
|
|
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
|
|
|
|{{book|1|20}}
|
|-
|
|'''Human Computer'''
|
|
|
|{{book|1|21}}
|
|-
|
|'''Common Cold'''
|
|
|
|{{book|1|25}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
|
|
|
|{{book|1|27}}
|
|-
|
|'''No More DNA'''
|
|
|
|{{book|1|29}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
|
|
|
|{{book|1|31}}
|
|-
|
|'''Flyover States'''
|
|
|
|{{book|1|33}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
|
|
|
|{{book|1|36}}
|
|-
|
|'''Self-Fertilization'''
|
|
|
|{{book|1|37}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
|
|
|
|{{book|1|40}}
|
|-
|
|'''Lost Immortals'''
|
|
|
|{{book|1|42}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
|
|
|
|{{book|1|46}}
|
|-
|
|'''Sparta'''
|
|
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|
|
|
|{{book|1|51}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
|
|
|
|{{book|1|54}}
|
|-
|
|'''Weightless Arrow'''
|
|
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|
|
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
|
|
|
|{{book|1|64}}
|
|-
|
|'''Neutron Bullet'''
|
|
|
|{{book|1|67}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
|
|
|
|{{book|1|68}}
|
|-
|
|'''Richter 15'''
|
|
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die of Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We should have attached a transmitter as well.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain?
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No. Jupiter is bulletproof.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
|It would spark and then fizzle out.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine.
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature.
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|there would be direct tissue damage, and other horrifying effects. Side note: Do not attend Ms. Frizzle,s chemistry class.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occured to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Eliabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|It would smell like bleach or burning rubber, and would taste sour.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|in about 20 billion years, but you won't be able to physically touch it and survive.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
|
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

==Editors==
''[[#Article index|(jump back to table)]]''
===Add name of reader who asked the question.===
Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

===Add YouTube video===
<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

===Add book chapter===
For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}<noinclude>

===Link to a ''what if?'' article===
On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

''[[#Article index|(jump back to table)]]''
[[Category:What If?| 9]]{{xkcdmeta}}

what if? articles

2025-02-10T23:56:30Z

WriterArtistCoder: Removed notice for 77: Growth Rate, 106: Ink Molecules, expl. sufficient and link gives more details; expanded 144: Saliva Pool

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].

</noinclude>==Article index==
<big>'''After more than 3 weeks and a TON of work by [[Talk:What If? chapters|so many people]], the two ''what if?'' tables have finally been merged.'''</big> --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:17, 3 February 2025 (UTC)

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> '''All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].'''

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> '''Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted

<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things left to do: '''</big></span>  ''(If you need help editing the table, check out the ''[[What If? chapters#Editors|Editors section]]''! It includes a simple summary of the templates' documentations.)''

*We mostly only need to work on the explanations now! Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Finish adding the name(s) of the readers who asked each questions. It's easy! The instructions are in the ''[[What If? chapters#Editors|Editors section]]''!
*Need to add all the questions from the first [[What If? (book)|''What If?'' book]] and a summary of each answer!
*Randall has released a new book, "''[[What If? 10th Anniversary Edition|What If? 10th Anniversary Edition]]''". [[What If? 10th Anniversary Edition|'''Add info''']] about the new book and [[:Category:Books|update the old book pages]]!

<div style="display:none;">__TOC__</div>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.

{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in...  ''(click to sort)''
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{what if|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate by about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{what if|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{what if|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{what if|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|A {{w|mole (unit)|mole}} is such a high number this would be tricky. They would condense into a pressurized sphere of meat that would freeze and occasionally explode from gases.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{what if|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{what if|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{what if|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{what if|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{what if|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{what if|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|
|-
|[[File:Droppings.png|100px]]
|'''{{what if|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|Assuming you are in an area with a reasonable number of birds, you'd have to wait about 195 years.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{what if|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{what if|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{what if|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{what if|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|It would warm a small patch of the ocean and not do much. With a bigger bomb, it could destroy the world.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{what if|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{what if|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements. Plus, it’d still need food for nutrients just like real plants.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{what if|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O’Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{what if|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{what if|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the Oh My God Particle), the Earth would explode with enough force to obliterate the entire solar system.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{what if|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{what if|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{what if|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{what if|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{what if|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but it would make some really cool patterns due to various factors such as the Earth’s rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|
|-
|[[File:Leap Seconds.png|100px]]
|'''{{what if|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|With 50 000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds.
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{what if|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|The world population would continue to grow, though 40% more slowly. Pilots, drivers, and surgeons would die en route and mid-operation, but these would be comparable to usual accident rates and handled fairly easily.
|{{blog|27|2013|01|08|1d late}}
|
|
|-
|[[File:Steak Drop.png|100px]]
|'''{{what if|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{what if|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{what if|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{what if|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{what if|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{what if|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|Less than a human hair's width.
|{{blog|33|2013|02|19}}
|
|
|-
|[[File:what if? Twitter.png|100px]]
|'''{{what if|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10^46 meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{what if|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{what if|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
|
|
|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{what if|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{what if|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|We could possibly spend a ton of money and resources to get a probe to Voyager. Getting it back is another story.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{what if|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|It doesn’t really work like that: at high enough speeds to knock the goalie back they’d both just splatter.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{what if|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{what if|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|Not even by a bit, because the North American plate is just too heavy for people to make an impact in its movement.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{what if|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|95 minutes on certain Norewgian and Finnish highways. (A similar concept has been explored in comic [[162: Angular Momentum]].)
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{what if|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|No, not even if we change the requirements to just the passengers staying alive.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{what if|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Aroldis Chapman could throw a golf ball to a height of sixteen giraffes.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{what if|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{what if|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|The finger holes would collapse and then not much would happen.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{what if|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They would see pretty much nothing with regular telescopes. The detection could be possible with radio technology.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{what if|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{what if|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|
|-
|[[File:Extreme Boating.png|100px]]
|'''{{what if|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on Mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the Third Sound as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{what if|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{what if|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{what if|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|Hundreds of thousands of years. As their basins are cut off, many shallow seas and a few deep trenches remain, leaving much of Earth still covered with water. Massive, unpredictable environmental changes would probably wipe out mankind. If they didn't, the Dutch would take over the world, no longer preoccupied with preventing their lands from flooding as they are now.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{what if|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|The water would fill the {{w|Valles Marineris}}, eventually leaving only {{w|Olympus Mons}} and some other small islands. The sea would ultimately freeze over, become covered in dust, and migrate to permafrost at the poles. In the meantime, the Netherlands would colonize Mars through the portal.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{what if|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances are 1 in 40000, but you might want to be careful, as there's also a 1 in a billion chance that the person you called just murdered someone.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{what if|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{what if|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{what if|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{what if|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|You'd need six printers, but if using an ink printer, costs would rack up to $500,000 a month, dwarfing paper and maintenance costs. You'd need to file away past versions in case they were reverted (restored), which would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{what if|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{what if|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{what if|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|About 16,000 feet. You would use about ten tanks, or 2500 ft<sup>3</sup>, of helium. A larger balloon could just be used as a parachute, no helium needed.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{what if|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|A 4.5 km thick layer of punch cards would bury the Earth, or triple the height ice sheets reached during the last ice age.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{what if|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|A nudist would survive for five hours, then succumb to the cold. With a good coat, one would survive for seven, even plausibly eight, until reaching the low-oxygen {{w|death zone}} and suffocating. However, your corpse would outlast the Earth as it was swallowed by the Sun.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{what if|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{what if|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{what if|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|After a month, the gain would be measurable but within the normal variation of gravity. After a year, it would be more prominent at 5%. Humans could survive with difficulty for a decade, but even in specially-built environments, they would succumb within a century as air itself became toxic from atmospheric pressure. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{what if|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|Yes, but gravity would vary wildly in different parts of your body, and if you were sprinting, you could accidentally tumble into a nauseous, swinging orbit or even outer space.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{what if|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|If Facebook petered out in the 2010s, the dead would surpass the living around 2065, but if it continued for generations, it would take until the mid-2100s.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{what if|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|
|{{blog|70|2013|11|05}}
|
|
|-
|[[File:Stirring Tea.png|100px]]
|'''{{what if|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{what if|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|The most well-document candidates are six Apollo astronauts who ventured behind the dark side of the Moon. Antarctic explorers and pre-colonialism Polynesian explorers have a shot, but there's no good evidence of specific people who beat the Apollo record. Astronauts Mike Collins and Al Worden said they were not at all lonely, the latter even enjoying his soltitude.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{what if|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|About 2.3 AU, or a little farther than Mars is from the Sun.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{what if|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|0.0000005%. Additionally, most water molecules you drink have never been drunk by another human in history, but almost all have been drunk by a dinosaur.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{what if|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|"Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{what if|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|{{notice|Too short}}Depends, as many were burned.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{what if|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|10 to 12 meters.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{what if|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|One large-sized one or two small-sized ones per day.
|{{blog|78|2014|01|07}}
|{{book|2|7}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{what if|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|{{notice|Why?}}Not strong enough to make a difference.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{what if|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{what if|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{what if|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|{{notice|Too short}}The baseball is much harder.
|{{blog|82|2014|02|05|1d late}}
|
|
|-
|[[File:Star Sand.png|100px]]
|'''{{what if|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|{{notice|Too short}}It would be a bunch of boulders with some patches of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{what if|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|No, only about as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{what if|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|{{notice|"If you cheat"?}}If you cheat, a bag a little smaller than the Moon.
|{{blog|85|2014|02|25}}
|
|
|-
|[[File:Far-Traveling Objects.png|100px]]
|'''{{what if|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|{{notice|How much? Explain}}The Mariner 1 has traveled much farther than Voyager 1.
|{{blog|86|2014|03|04}}
|
|
|-
|[[File:Enforced by Radar.png|100px]]
|'''{{what if|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Intense enough to cause a medium sized nuclear explosion. Better to just carry a sign.
|{{blog|87|2014|03|11}}
|
|
|-
|[[File:Soda Sequestration.png|100px]]
|'''{{what if|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|Enough soda to cover Earth with ten layers of cans.
|{{blog|88|2014|03|18}}
|
|
|-
|[[File:Tungsten Countertop.png|100px]]
|'''{{what if|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|{{notice|Too short}}It would be vapourized before it got close to the Sun.
|{{blog|89|2014|03|25}}
|
|
|-
|[[File:Great Tree, Great Axe.png|100px]]
|'''{{what if|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|
|{{blog|90|2014|04|03|2d late}}
|
|
|-
|[[File:Faucet Power.png|100px]]
|'''{{what if|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|
|{{blog|91|2014|04|08|2d early}}
|
|
|-
|[[File:One-Second Day.png|100px]]
|'''{{what if|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
|
|-
|[[File:Windshield Raindrops.png|100px]]
|'''{{what if|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Fast enough so you would need a speedometer in scientific notation.
|{{blog|93|2014|04|22}}
|
|
|-
|[[File:Billion-Story Building.png|100px]]
|'''{{what if|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|First of all, it would not stand under its own weight. Also, it would be many times the distance the Earth is from the Moon.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{what if|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|
|{{blog|95|2014|05|06}}
|
|
|-
|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{what if|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|They would not be able to pay off the debt, even if they forced humanity to work as slaves from now until the stars die.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
|
|-
|[[File:Burning Pollen.png|100px]]
|'''{{what if|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
|
|
|-
|[[File:Blood Alcohol.png|100px]]
|'''{{what if|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|
|{{blog|98|2014|05|27}}
|{{book|2|42}}
|
|-
|[[File:Starlings.png|100px]]
|'''{{what if|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|{{notice|Too short}}Enough to make a black hole.
|{{blog|99|2014|06|03}}
|
|
|-
|[[File:WWII Films.png|100px]]
|'''{{what if|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|
|{{blog|100|2014|06|11|1d late}}
|
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|-
|[[File:Plastic Dinosaurs.png|100px]]
|'''{{what if|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|
|{{blog|101|2014|06|18}}
|{{book|2|26}}
|
|-
|[[File:Keyboard Power.png|100px]]
|'''{{what if|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|{{notice|Too short}}Less than enough energy to microwave a burrito.
|{{blog|102|2014|06|25}}
|
|
|-
|[[File:Vanishing Water.png|100px]]
|'''{{what if|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|
|{{blog|103|2014|07|02}}
|
|
|-
|[[File:Global Snow.png|100px]]
|'''{{what if|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|
|{{blog|104|2014|07|09}}
|{{book|2|59}}
|
|-
|[[File:Cannibalism.png|100px]]
|'''{{what if|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|Depends, if you’re the only one trying out this new diet, maybe a week before you get caught. If the entire world brooms in, about 32 months.
|{{blog|105|2014|07|16}}
|
|
|-
|[[File:Ink Molecules.png|100px]]
|'''{{what if|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|100,000,000,000,000,000.
|{{blog|106|2014|07|23}}
|
|
|-
|[[File:Letter to Mom.png|100px]]
|'''{{what if|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|
|{{blog|107|2014|07|30}}
|
|
|-
|[[File:Expensive Shoebox.png|100px]]
|'''{{what if|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|{{notice|A little too vague.}}There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000.
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
|
|-
|[[File:Into the Blue.png|100px]]
|'''{{what if|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Most of the time it would not hit anything.
|{{blog|109|2014|08|20}}
|
|
|-
|[[File:Walking New York.png|100px]]
|'''{{what if|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|{{notice|Too short}}Yes, in around 30 years, but you'd end up in prison.
|{{blog|110|2014|08|27}}
|
|
|-
|[[File:All the Money.png|100px]]
|'''{{what if|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|The only thing to do would be to make a swimming pool, as it is unlikely anybody else would agree with your claims to all the money and property.
|{{blog|111|2014|09|02|1d early}}
|
|
|-
|[[File:Balloon Car.png|100px]]
|'''{{what if|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
|
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|-
|[[File:Visit Every State.png|100px]]
|'''{{what if|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
As discussed by Stephen von Worley on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ ''Data Pointed'']
|In just over 6 hours, in 5 satellite orbits.
|{{blog|113|2014|09|24}}
|
|
|-
|[[File:Antimatter.png|100px]]
|'''{{what if|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|{{notice|Too short}}Our existence would end, but much slower than in most other situations, from outer-space gas and meteorites.
|{{blog|114|2014|10|01}}
|
|
|-
|[[File:Into the Sun.png|100px]]
|'''{{what if|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface. The core, on the other hand, would vaporize you.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{what if|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{what if|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
|
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|-
|[[File:Physical Salary.png|100px]]
|'''{{what if|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|{{notice|This is obvious. Explain both scenarios.}}A normal person would not get buried. A CEO, on the other hand, would be in trouble.
|{{blog|118|2014|10|30}}
|
|
|-
|[[File:Laser Umbrella.png|100px]]
|'''{{what if|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It would be very complicated, not worth it, and would probably make everything around you catch fire.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{what if|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
|
|
|-
|[[File:Frozen Rivers.png|100px]]
|'''{{what if|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
|
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|-
|[[File:Lava Lamp.png|100px]]
|'''{{what if|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
|
|-
|[[File:Fairy Demographics.png|100px]]
|'''{{what if|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
|
|
|-
|[[File:Lunar Swimming.png|100px]]
|'''{{what if|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
|
|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{what if|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|Two hours and 20 minutes.
|{{blog|125|2015|01|15}}
|
|
|-
|[[File:Stairs (What If?).png|100px]]
|'''{{what if|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|A week or two for a professional stair-climber. Half a day by motorcycle.
|{{blog|126|2015|01|22}}
|
|
|-
|[[File:Tug of War.png|100px]]
|'''{{what if|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|
|{{blog|127|2015|01|28|1d early}}
|
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|-
|[[File:Zippo Phone.png|100px]]
|'''{{what if|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
|
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|-
|[[File:Black Hole Moon.png|100px]]
|'''{{what if|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|It would not have a big impact unless it happened during the space age.
|{{blog|129|2015|02|12}}
|
|
|-
|[[File:Snow Removal.png|100px]]
|'''{{what if|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|
|{{blog|130|2015|02|19}}
|
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|-
|[[File:Microwaves.png|100px]]
|'''{{what if|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|
|{{blog|131|2015|02|27|1d late}}
|
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|-
|[[File:Hotter than Average.png|100px]]
|'''{{what if|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|{{notice|Explain, what's a water average?}}There is a water average. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
|
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|-
|[[File:Flagpole.png|100px]]
|'''{{what if|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|
|{{blog|133|2015|03|17|3d late}}
|
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|-
|[[File:Space Burial.png|100px]]
|'''{{what if|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|
|{{blog|134|2015|03|28|4d late}}
|
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|-
|[[File:Digging Downward.png|100px]]
|'''{{what if|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|
|{{blog|135|2015|04|05|1d late}}
|
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|-
|[[File:Spiders vs. the Sun.png|100px]]
|'''{{what if|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun. But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
|
|-
|[[File:New Horizons.png|100px]]
|'''{{what if|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
|
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|-
|[[File:Jupiter Submarine.png|100px]]
|'''{{what if|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|
|{{blog|138|2015|07|28|7d late}}
|
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|-
|[[File:Jupiter Descending.png|100px]]
|'''{{what if|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|{{notice|Too short}}You would see... brown.
|{{blog|139|2015|08|04}}
|
|
|-
|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{what if|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
|
|-
|[[File:Sunbeam.png|100px]]
|'''{{what if|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|
|{{blog|141|2016|01|12|3m 18d late}}
|
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|-
|[[File:Space Jetta.png|100px]]
|'''{{what if|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why?}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
|
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|-
|[[File:Europa Water Siphon.png|100px]]
|'''{{what if|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
|
|
|-
|[[File:Saliva Pool.png|100px]]
|'''{{what if|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|For an Olympic pool, 8,345 years; you would need to start during the invention of agriculture to finish by the present day.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
|
|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{what if|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|
|{{blog|145|2016|02|09}}
|{{book|2|51}}
|
|-
|[[File:Stop Jupiter.png|100px]]
|'''{{what if|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|{{notice|Why?}}This can never happen, even if we were to throw Earth at Jupiter.
|{{blog|146|2016|02|16}}
|
|
|-
|[[File:Niagara Straw.png|100px]]
|'''{{what if|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|{{notice|Too short, last part.}}The International Niagara Committee, the International Niagara Board of Control, the International Joint Commission, the International Niagara Board Working Committee, and probably the Great Lakes–St. Lawrence River Adaptive Management Committee would get angry. The Earth would also be destroyed.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|
|-
|[[File:Eat the Sun.png|100px]]
|'''{{what if|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|
|{{blog|148|2016|03|12|8d late}}
|
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|-
|[[File:Pizza Bird.png|100px]]
|'''{{what if|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|
|{{blog|149|2016|03|26|7d late}}
|
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|-
|[[File:Tatooine Rainbow.png|100px]]
|'''{{what if|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|
|{{blog|150|2016|05|23|1m 21d late}}
|
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|-
|[[File:Sun Bug.png|100px]]
|'''{{what if|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|
|{{blog|151|2016|07|21|1m 23d late}}
|
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|-
|[[File:Flood Death Valley.png|100px]]
|'''{{what if|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|
|{{blog|152|2016|10|18|2m 21d late}}
|
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|-
|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
|
|
|-
|[[File:Hide the Atmosphere.png|100px]]
|'''{{what if|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
|
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|-
|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{what if|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
|
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|-
|[[File:Toaster vs. Freezer.png|100px]]
|'''{{what if|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ My Brother, My Brother, and Me], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ Episode 343], discussing a Yahoo Answers question</div>
|
|{{blog|155|2017|02|28|13d late}}
|
|
|-
|[[File:Electrofishing for Whales.png|100px]]
|'''{{what if|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
|
|
|-
|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{what if|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
|
|-
|[[File:Hot Banana.png|100px]]
|'''{{what if|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
|
|
|-
|[[File:Hailstones.png|100px]]
|'''{{what if|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|There's no real chance of producing that big hail stones, but if they could be lethal even if staying indoors.
|{{blog|159|2022|07|05|1m 30d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|
|{{blog|160|2022|09|06|1m 26d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|{{notice|Too short}}Australia owns most of the galaxy at certain points in time.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
|
|
|-
|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
|
|
|
|{{book|1|4}}
|
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|8}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
|
|
|
|{{book|1|12}}
|
|-
|
|'''The Last Human Light'''
|
|
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
|
|
|
|{{book|1|16}}
|
|-
|
|'''Orbital Submarine'''
|
|
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
|
|
|
|{{book|1|20}}
|
|-
|
|'''Human Computer'''
|
|
|
|{{book|1|21}}
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|-
|
|'''Common Cold'''
|
|
|
|{{book|1|25}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
|
|
|
|{{book|1|27}}
|
|-
|
|'''No More DNA'''
|
|
|
|{{book|1|29}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
|
|
|
|{{book|1|31}}
|
|-
|
|'''Flyover States'''
|
|
|
|{{book|1|33}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
|
|
|
|{{book|1|36}}
|
|-
|
|'''Self-Fertilization'''
|
|
|
|{{book|1|37}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
|
|
|
|{{book|1|40}}
|
|-
|
|'''Lost Immortals'''
|
|
|
|{{book|1|42}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
|
|
|
|{{book|1|46}}
|
|-
|
|'''Sparta'''
|
|
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|
|
|
|{{book|1|51}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
|
|
|
|{{book|1|54}}
|
|-
|
|'''Weightless Arrow'''
|
|
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|
|
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
|
|
|
|{{book|1|64}}
|
|-
|
|'''Neutron Bullet'''
|
|
|
|{{book|1|67}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
|
|
|
|{{book|1|68}}
|
|-
|
|'''Richter 15'''
|
|
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die of Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We should have attached a transmitter as well.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain?
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No. Jupiter is bulletproof.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
|It would spark and then fizzle out.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine.
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature.
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|there would be direct tissue damage, and other horrifying effects. Side note: Do not attend Ms. Frizzle,s chemistry class.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occured to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Eliabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|It would smell like bleach or burning rubber, and would taste sour.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|in about 20 billion years, but you won't be able to physically touch it and survive.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
|
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

==Editors==
''[[#Article index|(jump back to table)]]''
===Add name of reader who asked the question.===
Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

===Add YouTube video===
<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

===Add book chapter===
For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}<noinclude>

===Link to a ''what if?'' article===
On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

''[[#Article index|(jump back to table)]]''
[[Category:What If?| 9]]{{xkcdmeta}}

what if? articles

2025-02-10T23:50:25Z

WriterArtistCoder: Addressed notices for 64: Rising Steadily, 67: Expanding Earth, 68: Little Planet, 69: Facebook of the Dead, 72: Loneliest Human, 73: Lethal Neutrinos; notice not needed for 75: Phone Keypad

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].

</noinclude>==Article index==
<big>'''After more than 3 weeks and a TON of work by [[Talk:What If? chapters|so many people]], the two ''what if?'' tables have finally been merged.'''</big> --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:17, 3 February 2025 (UTC)

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> '''All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].'''

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> '''Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted

<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things left to do: '''</big></span>  ''(If you need help editing the table, check out the ''[[What If? chapters#Editors|Editors section]]''! It includes a simple summary of the templates' documentations.)''

*We mostly only need to work on the explanations now! Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Finish adding the name(s) of the readers who asked each questions. It's easy! The instructions are in the ''[[What If? chapters#Editors|Editors section]]''!
*Need to add all the questions from the first [[What If? (book)|''What If?'' book]] and a summary of each answer!
*Randall has released a new book, "''[[What If? 10th Anniversary Edition|What If? 10th Anniversary Edition]]''". [[What If? 10th Anniversary Edition|'''Add info''']] about the new book and [[:Category:Books|update the old book pages]]!

<div style="display:none;">__TOC__</div>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.

{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in...  ''(click to sort)''
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{what if|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate by about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{what if|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{what if|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{what if|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|A {{w|mole (unit)|mole}} is such a high number this would be tricky. They would condense into a pressurized sphere of meat that would freeze and occasionally explode from gases.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{what if|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{what if|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{what if|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{what if|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{what if|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{what if|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|
|-
|[[File:Droppings.png|100px]]
|'''{{what if|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|Assuming you are in an area with a reasonable number of birds, you'd have to wait about 195 years.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{what if|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{what if|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{what if|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{what if|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|It would warm a small patch of the ocean and not do much. With a bigger bomb, it could destroy the world.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{what if|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{what if|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements. Plus, it’d still need food for nutrients just like real plants.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{what if|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O’Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{what if|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{what if|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the Oh My God Particle), the Earth would explode with enough force to obliterate the entire solar system.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{what if|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{what if|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{what if|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{what if|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{what if|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but it would make some really cool patterns due to various factors such as the Earth’s rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|
|-
|[[File:Leap Seconds.png|100px]]
|'''{{what if|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|With 50 000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds.
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{what if|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|The world population would continue to grow, though 40% more slowly. Pilots, drivers, and surgeons would die en route and mid-operation, but these would be comparable to usual accident rates and handled fairly easily.
|{{blog|27|2013|01|08|1d late}}
|
|
|-
|[[File:Steak Drop.png|100px]]
|'''{{what if|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{what if|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{what if|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{what if|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{what if|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{what if|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|Less than a human hair's width.
|{{blog|33|2013|02|19}}
|
|
|-
|[[File:what if? Twitter.png|100px]]
|'''{{what if|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10^46 meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{what if|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{what if|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
|
|
|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{what if|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{what if|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|We could possibly spend a ton of money and resources to get a probe to Voyager. Getting it back is another story.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{what if|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|It doesn’t really work like that: at high enough speeds to knock the goalie back they’d both just splatter.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{what if|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{what if|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|Not even by a bit, because the North American plate is just too heavy for people to make an impact in its movement.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{what if|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|95 minutes on certain Norewgian and Finnish highways. (A similar concept has been explored in comic [[162: Angular Momentum]].)
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{what if|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|No, not even if we change the requirements to just the passengers staying alive.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{what if|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Aroldis Chapman could throw a golf ball to a height of sixteen giraffes.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{what if|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{what if|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|The finger holes would collapse and then not much would happen.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{what if|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They would see pretty much nothing with regular telescopes. The detection could be possible with radio technology.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{what if|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{what if|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|
|-
|[[File:Extreme Boating.png|100px]]
|'''{{what if|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on Mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the Third Sound as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{what if|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{what if|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{what if|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|Hundreds of thousands of years. As their basins are cut off, many shallow seas and a few deep trenches remain, leaving much of Earth still covered with water. Massive, unpredictable environmental changes would probably wipe out mankind. If they didn't, the Dutch would take over the world, no longer preoccupied with preventing their lands from flooding as they are now.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{what if|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|The water would fill the {{w|Valles Marineris}}, eventually leaving only {{w|Olympus Mons}} and some other small islands. The sea would ultimately freeze over, become covered in dust, and migrate to permafrost at the poles. In the meantime, the Netherlands would colonize Mars through the portal.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{what if|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances are 1 in 40000, but you might want to be careful, as there's also a 1 in a billion chance that the person you called just murdered someone.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{what if|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{what if|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{what if|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{what if|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|You'd need six printers, but if using an ink printer, costs would rack up to $500,000 a month, dwarfing paper and maintenance costs. You'd need to file away past versions in case they were reverted (restored), which would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{what if|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{what if|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{what if|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|About 16,000 feet. You would use about ten tanks, or 2500 ft<sup>3</sup>, of helium. A larger balloon could just be used as a parachute, no helium needed.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{what if|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|A 4.5 km thick layer of punch cards would bury the Earth, or triple the height ice sheets reached during the last ice age.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{what if|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|A nudist would survive for five hours, then succumb to the cold. With a good coat, one would survive for seven, even plausibly eight, until reaching the low-oxygen {{w|death zone}} and suffocating. However, your corpse would outlast the Earth as it was swallowed by the Sun.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{what if|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{what if|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{what if|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|After a month, the gain would be measurable but within the normal variation of gravity. After a year, it would be more prominent at 5%. Humans could survive with difficulty for a decade, but even in specially-built environments, they would succumb within a century as air itself became toxic from atmospheric pressure. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{what if|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|Yes, but gravity would vary wildly in different parts of your body, and if you were sprinting, you could accidentally tumble into a nauseous, swinging orbit or even outer space.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{what if|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|If Facebook petered out in the 2010s, the dead would surpass the living around 2065, but if it continued for generations, it would take until the mid-2100s.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{what if|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|
|{{blog|70|2013|11|05}}
|
|
|-
|[[File:Stirring Tea.png|100px]]
|'''{{what if|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{what if|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|The most well-document candidates are six Apollo astronauts who ventured behind the dark side of the Moon. Antarctic explorers and pre-colonialism Polynesian explorers have a shot, but there's no good evidence of specific people who beat the Apollo record. Astronauts Mike Collins and Al Worden said they were not at all lonely, the latter even enjoying his soltitude.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{what if|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|About 2.3 AU, or a little farther than Mars is from the Sun.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{what if|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|0.0000005%. Additionally, most water molecules you drink have never been drunk by another human in history, but almost all have been drunk by a dinosaur.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{what if|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|"Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{what if|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|{{notice|Too short}}Depends, as many were burned.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{what if|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|{{notice|Too short}}10 to 12 meters.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{what if|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|One large-sized one or two small-sized ones per day.
|{{blog|78|2014|01|07}}
|{{book|2|7}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{what if|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|{{notice|Why?}}Not strong enough to make a difference.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{what if|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{what if|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{what if|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|{{notice|Too short}}The baseball is much harder.
|{{blog|82|2014|02|05|1d late}}
|
|
|-
|[[File:Star Sand.png|100px]]
|'''{{what if|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|{{notice|Too short}}It would be a bunch of boulders with some patches of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{what if|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|No, only about as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{what if|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|{{notice|"If you cheat"?}}If you cheat, a bag a little smaller than the Moon.
|{{blog|85|2014|02|25}}
|
|
|-
|[[File:Far-Traveling Objects.png|100px]]
|'''{{what if|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|{{notice|How much? Explain}}The Mariner 1 has traveled much farther than Voyager 1.
|{{blog|86|2014|03|04}}
|
|
|-
|[[File:Enforced by Radar.png|100px]]
|'''{{what if|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Intense enough to cause a medium sized nuclear explosion. Better to just carry a sign.
|{{blog|87|2014|03|11}}
|
|
|-
|[[File:Soda Sequestration.png|100px]]
|'''{{what if|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|Enough soda to cover Earth with ten layers of cans.
|{{blog|88|2014|03|18}}
|
|
|-
|[[File:Tungsten Countertop.png|100px]]
|'''{{what if|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|{{notice|Too short}}It would be vapourized before it got close to the Sun.
|{{blog|89|2014|03|25}}
|
|
|-
|[[File:Great Tree, Great Axe.png|100px]]
|'''{{what if|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|
|{{blog|90|2014|04|03|2d late}}
|
|
|-
|[[File:Faucet Power.png|100px]]
|'''{{what if|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|
|{{blog|91|2014|04|08|2d early}}
|
|
|-
|[[File:One-Second Day.png|100px]]
|'''{{what if|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
|
|-
|[[File:Windshield Raindrops.png|100px]]
|'''{{what if|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Fast enough so you would need a speedometer in scientific notation.
|{{blog|93|2014|04|22}}
|
|
|-
|[[File:Billion-Story Building.png|100px]]
|'''{{what if|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|First of all, it would not stand under its own weight. Also, it would be many times the distance the Earth is from the Moon.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{what if|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|
|{{blog|95|2014|05|06}}
|
|
|-
|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{what if|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|They would not be able to pay off the debt, even if they forced humanity to work as slaves from now until the stars die.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
|
|-
|[[File:Burning Pollen.png|100px]]
|'''{{what if|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
|
|
|-
|[[File:Blood Alcohol.png|100px]]
|'''{{what if|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|
|{{blog|98|2014|05|27}}
|{{book|2|42}}
|
|-
|[[File:Starlings.png|100px]]
|'''{{what if|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|{{notice|Too short}}Enough to make a black hole.
|{{blog|99|2014|06|03}}
|
|
|-
|[[File:WWII Films.png|100px]]
|'''{{what if|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|
|{{blog|100|2014|06|11|1d late}}
|
|
|-
|[[File:Plastic Dinosaurs.png|100px]]
|'''{{what if|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|
|{{blog|101|2014|06|18}}
|{{book|2|26}}
|
|-
|[[File:Keyboard Power.png|100px]]
|'''{{what if|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|{{notice|Too short}}Less than enough energy to microwave a burrito.
|{{blog|102|2014|06|25}}
|
|
|-
|[[File:Vanishing Water.png|100px]]
|'''{{what if|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|
|{{blog|103|2014|07|02}}
|
|
|-
|[[File:Global Snow.png|100px]]
|'''{{what if|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|
|{{blog|104|2014|07|09}}
|{{book|2|59}}
|
|-
|[[File:Cannibalism.png|100px]]
|'''{{what if|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|Depends, if you’re the only one trying out this new diet, maybe a week before you get caught. If the entire world brooms in, about 32 months.
|{{blog|105|2014|07|16}}
|
|
|-
|[[File:Ink Molecules.png|100px]]
|'''{{what if|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|{{notice|Too short}}An 18-digit number.
|{{blog|106|2014|07|23}}
|
|
|-
|[[File:Letter to Mom.png|100px]]
|'''{{what if|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|
|{{blog|107|2014|07|30}}
|
|
|-
|[[File:Expensive Shoebox.png|100px]]
|'''{{what if|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|{{notice|A little too vague.}}There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000.
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
|
|-
|[[File:Into the Blue.png|100px]]
|'''{{what if|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Most of the time it would not hit anything.
|{{blog|109|2014|08|20}}
|
|
|-
|[[File:Walking New York.png|100px]]
|'''{{what if|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|{{notice|Too short}}Yes, in around 30 years, but you'd end up in prison.
|{{blog|110|2014|08|27}}
|
|
|-
|[[File:All the Money.png|100px]]
|'''{{what if|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|The only thing to do would be to make a swimming pool, as it is unlikely anybody else would agree with your claims to all the money and property.
|{{blog|111|2014|09|02|1d early}}
|
|
|-
|[[File:Balloon Car.png|100px]]
|'''{{what if|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
|
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|-
|[[File:Visit Every State.png|100px]]
|'''{{what if|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
As discussed by Stephen von Worley on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ ''Data Pointed'']
|In just over 6 hours, in 5 satellite orbits.
|{{blog|113|2014|09|24}}
|
|
|-
|[[File:Antimatter.png|100px]]
|'''{{what if|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|{{notice|Too short}}Our existence would end, but much slower than in most other situations, from outer-space gas and meteorites.
|{{blog|114|2014|10|01}}
|
|
|-
|[[File:Into the Sun.png|100px]]
|'''{{what if|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface. The core, on the other hand, would vaporize you.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{what if|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{what if|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
|
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|-
|[[File:Physical Salary.png|100px]]
|'''{{what if|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|{{notice|This is obvious. Explain both scenarios.}}A normal person would not get buried. A CEO, on the other hand, would be in trouble.
|{{blog|118|2014|10|30}}
|
|
|-
|[[File:Laser Umbrella.png|100px]]
|'''{{what if|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It would be very complicated, not worth it, and would probably make everything around you catch fire.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{what if|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
|
|
|-
|[[File:Frozen Rivers.png|100px]]
|'''{{what if|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
|
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|-
|[[File:Lava Lamp.png|100px]]
|'''{{what if|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
|
|-
|[[File:Fairy Demographics.png|100px]]
|'''{{what if|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
|
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|-
|[[File:Lunar Swimming.png|100px]]
|'''{{what if|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
|
|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{what if|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|Two hours and 20 minutes.
|{{blog|125|2015|01|15}}
|
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|-
|[[File:Stairs (What If?).png|100px]]
|'''{{what if|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|A week or two for a professional stair-climber. Half a day by motorcycle.
|{{blog|126|2015|01|22}}
|
|
|-
|[[File:Tug of War.png|100px]]
|'''{{what if|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|
|{{blog|127|2015|01|28|1d early}}
|
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|-
|[[File:Zippo Phone.png|100px]]
|'''{{what if|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
|
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|-
|[[File:Black Hole Moon.png|100px]]
|'''{{what if|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|It would not have a big impact unless it happened during the space age.
|{{blog|129|2015|02|12}}
|
|
|-
|[[File:Snow Removal.png|100px]]
|'''{{what if|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|
|{{blog|130|2015|02|19}}
|
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|-
|[[File:Microwaves.png|100px]]
|'''{{what if|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|
|{{blog|131|2015|02|27|1d late}}
|
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|-
|[[File:Hotter than Average.png|100px]]
|'''{{what if|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|{{notice|Explain, what's a water average?}}There is a water average. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
|
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|-
|[[File:Flagpole.png|100px]]
|'''{{what if|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|
|{{blog|133|2015|03|17|3d late}}
|
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|-
|[[File:Space Burial.png|100px]]
|'''{{what if|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|
|{{blog|134|2015|03|28|4d late}}
|
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|-
|[[File:Digging Downward.png|100px]]
|'''{{what if|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|
|{{blog|135|2015|04|05|1d late}}
|
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|-
|[[File:Spiders vs. the Sun.png|100px]]
|'''{{what if|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun. But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
|
|-
|[[File:New Horizons.png|100px]]
|'''{{what if|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
|
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|-
|[[File:Jupiter Submarine.png|100px]]
|'''{{what if|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|
|{{blog|138|2015|07|28|7d late}}
|
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|-
|[[File:Jupiter Descending.png|100px]]
|'''{{what if|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|{{notice|Too short}}You would see... brown.
|{{blog|139|2015|08|04}}
|
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|-
|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{what if|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
|
|-
|[[File:Sunbeam.png|100px]]
|'''{{what if|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|
|{{blog|141|2016|01|12|3m 18d late}}
|
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|-
|[[File:Space Jetta.png|100px]]
|'''{{what if|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why?}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
|
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|-
|[[File:Europa Water Siphon.png|100px]]
|'''{{what if|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
|
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|-
|[[File:Saliva Pool.png|100px]]
|'''{{what if|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|{{notice|Too short. Why? How?}}It would take them 8345 years.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
|
|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{what if|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|
|{{blog|145|2016|02|09}}
|{{book|2|51}}
|
|-
|[[File:Stop Jupiter.png|100px]]
|'''{{what if|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|{{notice|Why?}}This can never happen, even if we were to throw Earth at Jupiter.
|{{blog|146|2016|02|16}}
|
|
|-
|[[File:Niagara Straw.png|100px]]
|'''{{what if|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|{{notice|Too short, last part.}}The International Niagara Committee, the International Niagara Board of Control, the International Joint Commission, the International Niagara Board Working Committee, and probably the Great Lakes–St. Lawrence River Adaptive Management Committee would get angry. The Earth would also be destroyed.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|
|-
|[[File:Eat the Sun.png|100px]]
|'''{{what if|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|
|{{blog|148|2016|03|12|8d late}}
|
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|-
|[[File:Pizza Bird.png|100px]]
|'''{{what if|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|
|{{blog|149|2016|03|26|7d late}}
|
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|-
|[[File:Tatooine Rainbow.png|100px]]
|'''{{what if|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|
|{{blog|150|2016|05|23|1m 21d late}}
|
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|-
|[[File:Sun Bug.png|100px]]
|'''{{what if|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|
|{{blog|151|2016|07|21|1m 23d late}}
|
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|-
|[[File:Flood Death Valley.png|100px]]
|'''{{what if|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|
|{{blog|152|2016|10|18|2m 21d late}}
|
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|-
|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
|
|
|-
|[[File:Hide the Atmosphere.png|100px]]
|'''{{what if|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
|
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|-
|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{what if|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
|
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|-
|[[File:Toaster vs. Freezer.png|100px]]
|'''{{what if|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ My Brother, My Brother, and Me], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ Episode 343], discussing a Yahoo Answers question</div>
|
|{{blog|155|2017|02|28|13d late}}
|
|
|-
|[[File:Electrofishing for Whales.png|100px]]
|'''{{what if|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
|
|
|-
|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{what if|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
|
|-
|[[File:Hot Banana.png|100px]]
|'''{{what if|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
|
|
|-
|[[File:Hailstones.png|100px]]
|'''{{what if|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|There's no real chance of producing that big hail stones, but if they could be lethal even if staying indoors.
|{{blog|159|2022|07|05|1m 30d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|
|{{blog|160|2022|09|06|1m 26d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|{{notice|Too short}}Australia owns most of the galaxy at certain points in time.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
|
|
|-
|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
|
|
|
|{{book|1|4}}
|
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|8}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
|
|
|
|{{book|1|12}}
|
|-
|
|'''The Last Human Light'''
|
|
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
|
|
|
|{{book|1|16}}
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|-
|
|'''Orbital Submarine'''
|
|
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
|
|
|
|{{book|1|20}}
|
|-
|
|'''Human Computer'''
|
|
|
|{{book|1|21}}
|
|-
|
|'''Common Cold'''
|
|
|
|{{book|1|25}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
|
|
|
|{{book|1|27}}
|
|-
|
|'''No More DNA'''
|
|
|
|{{book|1|29}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
|
|
|
|{{book|1|31}}
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|-
|
|'''Flyover States'''
|
|
|
|{{book|1|33}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
|
|
|
|{{book|1|36}}
|
|-
|
|'''Self-Fertilization'''
|
|
|
|{{book|1|37}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
|
|
|
|{{book|1|40}}
|
|-
|
|'''Lost Immortals'''
|
|
|
|{{book|1|42}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
|
|
|
|{{book|1|46}}
|
|-
|
|'''Sparta'''
|
|
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|
|
|
|{{book|1|51}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
|
|
|
|{{book|1|54}}
|
|-
|
|'''Weightless Arrow'''
|
|
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|
|
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
|
|
|
|{{book|1|64}}
|
|-
|
|'''Neutron Bullet'''
|
|
|
|{{book|1|67}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
|
|
|
|{{book|1|68}}
|
|-
|
|'''Richter 15'''
|
|
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die of Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We should have attached a transmitter as well.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain?
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No. Jupiter is bulletproof.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
|It would spark and then fizzle out.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine.
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature.
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|there would be direct tissue damage, and other horrifying effects. Side note: Do not attend Ms. Frizzle,s chemistry class.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occured to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Eliabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|It would smell like bleach or burning rubber, and would taste sour.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|in about 20 billion years, but you won't be able to physically touch it and survive.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
|
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

==Editors==
''[[#Article index|(jump back to table)]]''
===Add name of reader who asked the question.===
Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

===Add YouTube video===
<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

===Add book chapter===
For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}<noinclude>

===Link to a ''what if?'' article===
On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

''[[#Article index|(jump back to table)]]''
[[Category:What If?| 9]]{{xkcdmeta}}

what if? articles

2025-02-10T23:17:36Z

WriterArtistCoder: Addressed notices for 26: Death Rates, 53-54: Drain the Oceans I-II, 59: Updating a Printed Wikipedia, 62: Falling with Helium, 63: Google's Datacenters on Punch Cards

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].

</noinclude>==Article index==
<big>'''After more than 3 weeks and a TON of work by [[Talk:What If? chapters|so many people]], the two ''what if?'' tables have finally been merged.'''</big> --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:17, 3 February 2025 (UTC)

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> '''All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].'''

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> '''Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted

<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things left to do: '''</big></span>  ''(If you need help editing the table, check out the ''[[What If? chapters#Editors|Editors section]]''! It includes a simple summary of the templates' documentations.)''

*We mostly only need to work on the explanations now! Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Finish adding the name(s) of the readers who asked each questions. It's easy! The instructions are in the ''[[What If? chapters#Editors|Editors section]]''!
*Need to add all the questions from the first [[What If? (book)|''What If?'' book]] and a summary of each answer!
*Randall has released a new book, "''[[What If? 10th Anniversary Edition|What If? 10th Anniversary Edition]]''". [[What If? 10th Anniversary Edition|'''Add info''']] about the new book and [[:Category:Books|update the old book pages]]!

<div style="display:none;">__TOC__</div>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.

{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in...  ''(click to sort)''
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{what if|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate by about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{what if|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{what if|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{what if|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|A {{w|mole (unit)|mole}} is such a high number this would be tricky. They would condense into a pressurized sphere of meat that would freeze and occasionally explode from gases.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{what if|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{what if|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{what if|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{what if|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{what if|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{what if|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|
|-
|[[File:Droppings.png|100px]]
|'''{{what if|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|Assuming you are in an area with a reasonable number of birds, you'd have to wait about 195 years.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{what if|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{what if|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{what if|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{what if|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|It would warm a small patch of the ocean and not do much. With a bigger bomb, it could destroy the world.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{what if|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{what if|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements. Plus, it’d still need food for nutrients just like real plants.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{what if|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O’Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{what if|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{what if|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the Oh My God Particle), the Earth would explode with enough force to obliterate the entire solar system.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{what if|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{what if|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{what if|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{what if|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{what if|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but it would make some really cool patterns due to various factors such as the Earth’s rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|
|-
|[[File:Leap Seconds.png|100px]]
|'''{{what if|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|With 50 000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds.
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{what if|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|The world population would continue to grow, though 40% more slowly. Pilots, drivers, and surgeons would die en route and mid-operation, but these would be comparable to usual accident rates and handled fairly easily.
|{{blog|27|2013|01|08|1d late}}
|
|
|-
|[[File:Steak Drop.png|100px]]
|'''{{what if|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{what if|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{what if|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{what if|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{what if|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{what if|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|Less than a human hair's width.
|{{blog|33|2013|02|19}}
|
|
|-
|[[File:what if? Twitter.png|100px]]
|'''{{what if|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10^46 meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{what if|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{what if|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
|
|
|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{what if|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{what if|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|We could possibly spend a ton of money and resources to get a probe to Voyager. Getting it back is another story.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{what if|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|It doesn’t really work like that: at high enough speeds to knock the goalie back they’d both just splatter.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{what if|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{what if|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|Not even by a bit, because the North American plate is just too heavy for people to make an impact in its movement.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{what if|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|95 minutes on certain Norewgian and Finnish highways. (A similar concept has been explored in comic [[162: Angular Momentum]].)
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{what if|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|No, not even if we change the requirements to just the passengers staying alive.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{what if|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Aroldis Chapman could throw a golf ball to a height of sixteen giraffes.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{what if|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{what if|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|The finger holes would collapse and then not much would happen.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{what if|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They would see pretty much nothing with regular telescopes. The detection could be possible with radio technology.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{what if|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{what if|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|
|-
|[[File:Extreme Boating.png|100px]]
|'''{{what if|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on Mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the Third Sound as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{what if|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{what if|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{what if|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|Hundreds of thousands of years. As their basins are cut off, many shallow seas and a few deep trenches remain, leaving much of Earth still covered with water. Massive, unpredictable environmental changes would probably wipe out mankind. If they didn't, the Dutch would take over the world, no longer preoccupied with preventing their lands from flooding as they are now.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{what if|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|The water would fill the {{w|Valles Marineris}}, eventually leaving only {{w|Olympus Mons}} and some other small islands. The sea would ultimately freeze over, become covered in dust, and migrate to permafrost at the poles. In the meantime, the Netherlands would colonize Mars through the portal.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{what if|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances are 1 in 40000, but you might want to be careful, as there's also a 1 in a billion chance that the person you called just murdered someone.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{what if|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{what if|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{what if|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{what if|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|You'd need six printers, but if using an ink printer, costs would rack up to $500,000 a month, dwarfing paper and maintenance costs. You'd need to file away past versions in case they were reverted (restored), which would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{what if|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{what if|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{what if|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|About 16,000 feet. You would use about ten tanks, or 2500 ft<sup>3</sup>, of helium. A larger balloon could just be used as a parachute, no helium needed.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{what if|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|A 4.5 km thick layer of punch cards would bury the Earth, or triple the height ice sheets reached during the last ice age.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{what if|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|{{notice|Too short}}Assuming you had a good coat, you would survive to the death zone (around 8000 meters up, where oxygen concentration become too low to breathe) and die.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{what if|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{what if|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{what if|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|{{notice|Too short}}About a year, but, after several decades, the pressure would increase so much the air would become toxic. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{what if|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|{{notice|Too short}}Yes, but it would be very inconvenient due to differing gravity and the possibility of entering orbit.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{what if|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|{{notice|Too short}}A decade or a century, depending on if Facebook would still be popular.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{what if|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|
|{{blog|70|2013|11|05}}
|
|
|-
|[[File:Stirring Tea.png|100px]]
|'''{{what if|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{what if|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|{{notice|Too short}}Possibly the Apollo Astronauts but they definitely weren't lonely.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{what if|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|{{notice|Too short}}About 2.3 AU.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{what if|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|{{notice|Too short}}0.0000005%.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{what if|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|{{notice|Explain how we got to this one}}"Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{what if|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|{{notice|Too short}}Depends, as many were burned.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{what if|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|{{notice|Too short}}10 to 12 meters.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{what if|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|One large-sized one or two small-sized ones per day.
|{{blog|78|2014|01|07}}
|{{book|2|7}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{what if|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|{{notice|Why?}}Not strong enough to make a difference.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{what if|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{what if|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{what if|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|{{notice|Too short}}The baseball is much harder.
|{{blog|82|2014|02|05|1d late}}
|
|
|-
|[[File:Star Sand.png|100px]]
|'''{{what if|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|{{notice|Too short}}It would be a bunch of boulders with some patches of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{what if|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|No, only about as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{what if|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|{{notice|"If you cheat"?}}If you cheat, a bag a little smaller than the Moon.
|{{blog|85|2014|02|25}}
|
|
|-
|[[File:Far-Traveling Objects.png|100px]]
|'''{{what if|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|{{notice|How much? Explain}}The Mariner 1 has traveled much farther than Voyager 1.
|{{blog|86|2014|03|04}}
|
|
|-
|[[File:Enforced by Radar.png|100px]]
|'''{{what if|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Intense enough to cause a medium sized nuclear explosion. Better to just carry a sign.
|{{blog|87|2014|03|11}}
|
|
|-
|[[File:Soda Sequestration.png|100px]]
|'''{{what if|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|Enough soda to cover Earth with ten layers of cans.
|{{blog|88|2014|03|18}}
|
|
|-
|[[File:Tungsten Countertop.png|100px]]
|'''{{what if|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|{{notice|Too short}}It would be vapourized before it got close to the Sun.
|{{blog|89|2014|03|25}}
|
|
|-
|[[File:Great Tree, Great Axe.png|100px]]
|'''{{what if|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|
|{{blog|90|2014|04|03|2d late}}
|
|
|-
|[[File:Faucet Power.png|100px]]
|'''{{what if|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|
|{{blog|91|2014|04|08|2d early}}
|
|
|-
|[[File:One-Second Day.png|100px]]
|'''{{what if|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
|
|-
|[[File:Windshield Raindrops.png|100px]]
|'''{{what if|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Fast enough so you would need a speedometer in scientific notation.
|{{blog|93|2014|04|22}}
|
|
|-
|[[File:Billion-Story Building.png|100px]]
|'''{{what if|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|First of all, it would not stand under its own weight. Also, it would be many times the distance the Earth is from the Moon.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{what if|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|
|{{blog|95|2014|05|06}}
|
|
|-
|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{what if|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|They would not be able to pay off the debt, even if they forced humanity to work as slaves from now until the stars die.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
|
|-
|[[File:Burning Pollen.png|100px]]
|'''{{what if|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
|
|
|-
|[[File:Blood Alcohol.png|100px]]
|'''{{what if|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|
|{{blog|98|2014|05|27}}
|{{book|2|42}}
|
|-
|[[File:Starlings.png|100px]]
|'''{{what if|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|{{notice|Too short}}Enough to make a black hole.
|{{blog|99|2014|06|03}}
|
|
|-
|[[File:WWII Films.png|100px]]
|'''{{what if|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|
|{{blog|100|2014|06|11|1d late}}
|
|
|-
|[[File:Plastic Dinosaurs.png|100px]]
|'''{{what if|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|
|{{blog|101|2014|06|18}}
|{{book|2|26}}
|
|-
|[[File:Keyboard Power.png|100px]]
|'''{{what if|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|{{notice|Too short}}Less than enough energy to microwave a burrito.
|{{blog|102|2014|06|25}}
|
|
|-
|[[File:Vanishing Water.png|100px]]
|'''{{what if|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|
|{{blog|103|2014|07|02}}
|
|
|-
|[[File:Global Snow.png|100px]]
|'''{{what if|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|
|{{blog|104|2014|07|09}}
|{{book|2|59}}
|
|-
|[[File:Cannibalism.png|100px]]
|'''{{what if|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|Depends, if you’re the only one trying out this new diet, maybe a week before you get caught. If the entire world brooms in, about 32 months.
|{{blog|105|2014|07|16}}
|
|
|-
|[[File:Ink Molecules.png|100px]]
|'''{{what if|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|{{notice|Too short}}An 18-digit number.
|{{blog|106|2014|07|23}}
|
|
|-
|[[File:Letter to Mom.png|100px]]
|'''{{what if|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|
|{{blog|107|2014|07|30}}
|
|
|-
|[[File:Expensive Shoebox.png|100px]]
|'''{{what if|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|{{notice|A little too vague.}}There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000.
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
|
|-
|[[File:Into the Blue.png|100px]]
|'''{{what if|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Most of the time it would not hit anything.
|{{blog|109|2014|08|20}}
|
|
|-
|[[File:Walking New York.png|100px]]
|'''{{what if|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|{{notice|Too short}}Yes, in around 30 years, but you'd end up in prison.
|{{blog|110|2014|08|27}}
|
|
|-
|[[File:All the Money.png|100px]]
|'''{{what if|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|The only thing to do would be to make a swimming pool, as it is unlikely anybody else would agree with your claims to all the money and property.
|{{blog|111|2014|09|02|1d early}}
|
|
|-
|[[File:Balloon Car.png|100px]]
|'''{{what if|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
|
|
|-
|[[File:Visit Every State.png|100px]]
|'''{{what if|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
As discussed by Stephen von Worley on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ ''Data Pointed'']
|In just over 6 hours, in 5 satellite orbits.
|{{blog|113|2014|09|24}}
|
|
|-
|[[File:Antimatter.png|100px]]
|'''{{what if|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|{{notice|Too short}}Our existence would end, but much slower than in most other situations, from outer-space gas and meteorites.
|{{blog|114|2014|10|01}}
|
|
|-
|[[File:Into the Sun.png|100px]]
|'''{{what if|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface. The core, on the other hand, would vaporize you.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{what if|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{what if|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
|
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|[[File:Physical Salary.png|100px]]
|'''{{what if|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|{{notice|This is obvious. Explain both scenarios.}}A normal person would not get buried. A CEO, on the other hand, would be in trouble.
|{{blog|118|2014|10|30}}
|
|
|-
|[[File:Laser Umbrella.png|100px]]
|'''{{what if|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It would be very complicated, not worth it, and would probably make everything around you catch fire.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{what if|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
|
|
|-
|[[File:Frozen Rivers.png|100px]]
|'''{{what if|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
|
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|-
|[[File:Lava Lamp.png|100px]]
|'''{{what if|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
|
|-
|[[File:Fairy Demographics.png|100px]]
|'''{{what if|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
|
|
|-
|[[File:Lunar Swimming.png|100px]]
|'''{{what if|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
|
|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{what if|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|Two hours and 20 minutes.
|{{blog|125|2015|01|15}}
|
|
|-
|[[File:Stairs (What If?).png|100px]]
|'''{{what if|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|A week or two for a professional stair-climber. Half a day by motorcycle.
|{{blog|126|2015|01|22}}
|
|
|-
|[[File:Tug of War.png|100px]]
|'''{{what if|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|
|{{blog|127|2015|01|28|1d early}}
|
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|-
|[[File:Zippo Phone.png|100px]]
|'''{{what if|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
|
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|-
|[[File:Black Hole Moon.png|100px]]
|'''{{what if|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|It would not have a big impact unless it happened during the space age.
|{{blog|129|2015|02|12}}
|
|
|-
|[[File:Snow Removal.png|100px]]
|'''{{what if|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|
|{{blog|130|2015|02|19}}
|
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|-
|[[File:Microwaves.png|100px]]
|'''{{what if|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|
|{{blog|131|2015|02|27|1d late}}
|
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|-
|[[File:Hotter than Average.png|100px]]
|'''{{what if|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|{{notice|Explain, what's a water average?}}There is a water average. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
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|-
|[[File:Flagpole.png|100px]]
|'''{{what if|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|
|{{blog|133|2015|03|17|3d late}}
|
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|-
|[[File:Space Burial.png|100px]]
|'''{{what if|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|
|{{blog|134|2015|03|28|4d late}}
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|[[File:Digging Downward.png|100px]]
|'''{{what if|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|
|{{blog|135|2015|04|05|1d late}}
|
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|-
|[[File:Spiders vs. the Sun.png|100px]]
|'''{{what if|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun. But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
|
|-
|[[File:New Horizons.png|100px]]
|'''{{what if|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
|
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|-
|[[File:Jupiter Submarine.png|100px]]
|'''{{what if|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|
|{{blog|138|2015|07|28|7d late}}
|
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|-
|[[File:Jupiter Descending.png|100px]]
|'''{{what if|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|{{notice|Too short}}You would see... brown.
|{{blog|139|2015|08|04}}
|
|
|-
|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{what if|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
|
|-
|[[File:Sunbeam.png|100px]]
|'''{{what if|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|
|{{blog|141|2016|01|12|3m 18d late}}
|
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|-
|[[File:Space Jetta.png|100px]]
|'''{{what if|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why?}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
|
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|-
|[[File:Europa Water Siphon.png|100px]]
|'''{{what if|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
|
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|-
|[[File:Saliva Pool.png|100px]]
|'''{{what if|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|{{notice|Too short. Why? How?}}It would take them 8345 years.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
|
|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{what if|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|
|{{blog|145|2016|02|09}}
|{{book|2|51}}
|
|-
|[[File:Stop Jupiter.png|100px]]
|'''{{what if|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|{{notice|Why?}}This can never happen, even if we were to throw Earth at Jupiter.
|{{blog|146|2016|02|16}}
|
|
|-
|[[File:Niagara Straw.png|100px]]
|'''{{what if|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|{{notice|Too short, last part.}}The International Niagara Committee, the International Niagara Board of Control, the International Joint Commission, the International Niagara Board Working Committee, and probably the Great Lakes–St. Lawrence River Adaptive Management Committee would get angry. The Earth would also be destroyed.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|
|-
|[[File:Eat the Sun.png|100px]]
|'''{{what if|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|
|{{blog|148|2016|03|12|8d late}}
|
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|-
|[[File:Pizza Bird.png|100px]]
|'''{{what if|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|
|{{blog|149|2016|03|26|7d late}}
|
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|[[File:Tatooine Rainbow.png|100px]]
|'''{{what if|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|
|{{blog|150|2016|05|23|1m 21d late}}
|
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|-
|[[File:Sun Bug.png|100px]]
|'''{{what if|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|
|{{blog|151|2016|07|21|1m 23d late}}
|
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|-
|[[File:Flood Death Valley.png|100px]]
|'''{{what if|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|
|{{blog|152|2016|10|18|2m 21d late}}
|
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|-
|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
|
|
|-
|[[File:Hide the Atmosphere.png|100px]]
|'''{{what if|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
|
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|-
|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{what if|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
|
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|[[File:Toaster vs. Freezer.png|100px]]
|'''{{what if|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ My Brother, My Brother, and Me], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ Episode 343], discussing a Yahoo Answers question</div>
|
|{{blog|155|2017|02|28|13d late}}
|
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|-
|[[File:Electrofishing for Whales.png|100px]]
|'''{{what if|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
|
|
|-
|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{what if|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
|
|-
|[[File:Hot Banana.png|100px]]
|'''{{what if|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
|
|
|-
|[[File:Hailstones.png|100px]]
|'''{{what if|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|There's no real chance of producing that big hail stones, but if they could be lethal even if staying indoors.
|{{blog|159|2022|07|05|1m 30d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|
|{{blog|160|2022|09|06|1m 26d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|{{notice|Too short}}Australia owns most of the galaxy at certain points in time.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
|
|
|-
|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
|
|
|
|{{book|1|4}}
|
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|8}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
|
|
|
|{{book|1|12}}
|
|-
|
|'''The Last Human Light'''
|
|
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
|
|
|
|{{book|1|16}}
|
|-
|
|'''Orbital Submarine'''
|
|
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
|
|
|
|{{book|1|20}}
|
|-
|
|'''Human Computer'''
|
|
|
|{{book|1|21}}
|
|-
|
|'''Common Cold'''
|
|
|
|{{book|1|25}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
|
|
|
|{{book|1|27}}
|
|-
|
|'''No More DNA'''
|
|
|
|{{book|1|29}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
|
|
|
|{{book|1|31}}
|
|-
|
|'''Flyover States'''
|
|
|
|{{book|1|33}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
|
|
|
|{{book|1|36}}
|
|-
|
|'''Self-Fertilization'''
|
|
|
|{{book|1|37}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
|
|
|
|{{book|1|40}}
|
|-
|
|'''Lost Immortals'''
|
|
|
|{{book|1|42}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
|
|
|
|{{book|1|46}}
|
|-
|
|'''Sparta'''
|
|
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|
|
|
|{{book|1|51}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
|
|
|
|{{book|1|54}}
|
|-
|
|'''Weightless Arrow'''
|
|
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|
|
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
|
|
|
|{{book|1|64}}
|
|-
|
|'''Neutron Bullet'''
|
|
|
|{{book|1|67}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
|
|
|
|{{book|1|68}}
|
|-
|
|'''Richter 15'''
|
|
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die of Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We should have attached a transmitter as well.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain?
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No. Jupiter is bulletproof.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
|It would spark and then fizzle out.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine.
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature.
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|there would be direct tissue damage, and other horrifying effects. Side note: Do not attend Ms. Frizzle,s chemistry class.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occured to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Eliabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|It would smell like bleach or burning rubber, and would taste sour.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|in about 20 billion years, but you won't be able to physically touch it and survive.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
|
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

==Editors==
''[[#Article index|(jump back to table)]]''
===Add name of reader who asked the question.===
Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

===Add YouTube video===
<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

===Add book chapter===
For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}<noinclude>

===Link to a ''what if?'' article===
On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

''[[#Article index|(jump back to table)]]''
[[Category:What If?| 9]]{{xkcdmeta}}

what if? articles

2025-02-10T22:41:33Z

WriterArtistCoder: Fixed formatting error for 126: Stairs

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].

</noinclude>==Article index==
<big>'''After more than 3 weeks and a TON of work by [[Talk:What If? chapters|so many people]], the two ''what if?'' tables have finally been merged.'''</big> --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:17, 3 February 2025 (UTC)

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> '''All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].'''

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> '''Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted

<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things left to do: '''</big></span>  ''(If you need help editing the table, check out the ''[[What If? chapters#Editors|Editors section]]''! It includes a simple summary of the templates' documentations.)''

*We mostly only need to work on the explanations now! Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Finish adding the name(s) of the readers who asked each questions. It's easy! The instructions are in the ''[[What If? chapters#Editors|Editors section]]''!
*Need to add all the questions from the first [[What If? (book)|''What If?'' book]] and a summary of each answer!
*Randall has released a new book, "''[[What If? 10th Anniversary Edition|What If? 10th Anniversary Edition]]''". [[What If? 10th Anniversary Edition|'''Add info''']] about the new book and [[:Category:Books|update the old book pages]]!

<div style="display:none;">__TOC__</div>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.

{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in...  ''(click to sort)''
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{what if|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate by about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{what if|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{what if|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{what if|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|A {{w|mole (unit)|mole}} is such a high number this would be tricky. They would condense into a pressurized sphere of meat that would freeze and occasionally explode from gases.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{what if|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{what if|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{what if|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{what if|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{what if|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{what if|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|
|-
|[[File:Droppings.png|100px]]
|'''{{what if|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|Assuming you are in an area with a reasonable number of birds, you'd have to wait about 195 years.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{what if|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{what if|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{what if|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{what if|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|It would warm a small patch of the ocean and not do much. With a bigger bomb, it could destroy the world.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{what if|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{what if|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements. Plus, it’d still need food for nutrients just like real plants.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{what if|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O’Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{what if|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—Nate Silver (<span class="plainlinks">[https://twitter.com/fivethirtyeight/status/154434288287363072 '''Twitter, January 4th, 2012''']</span>)</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{what if|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the Oh My God Particle), the Earth would explode with enough force to obliterate the entire solar system.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{what if|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{what if|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|140,000 miles if gas was the only cost involved. The exercise of picking up the penny can prolong your lifespan, but you've wasted valuable seconds reading this article.
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{what if|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{what if|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{what if|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|No, but it would make some really cool patterns due to various factors such as the Earth’s rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|
|-
|[[File:Leap Seconds.png|100px]]
|'''{{what if|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|With 50 000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds.
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{what if|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|{{notice|Too vague. How much slower, how dramatic?}}Not much, the world just has too many people. Population would still grow, just a bit slower. Although, the impacts ''would'' be pretty dramatic in some ways.
|{{blog|27|2013|01|08|1d late}}
|
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|-
|[[File:Steak Drop.png|100px]]
|'''{{what if|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{what if|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as the guards would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{what if|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{what if|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{what if|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|Very blurry because Hubble isn't able to rotate fast enough to track it on the surface of the Earth. Hubble is the wrong tool for the job, you're thinking of a spy satellite.
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{what if|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|Less than a human hair's width.
|{{blog|33|2013|02|19}}
|
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|-
|[[File:what if? Twitter.png|100px]]
|'''{{what if|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10^46 meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{what if|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{what if|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|It depends what you consider unpleasant. Your sink will clog and your house will flood with oobleck, but if you really really like cornstarch then nothing unpleasant will happen.
|{{blog|36|2013|03|12}}
|
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|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{what if|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{what if|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|We could possibly spend a ton of money and resources to get a probe to Voyager. Getting it back is another story.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{what if|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|It doesn’t really work like that: at high enough speeds to knock the goalie back they’d both just splatter.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{what if|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{what if|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|Not even by a bit, because the North American plate is just too heavy for people to make an impact in its movement.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{what if|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|95 minutes on certain Norewgian and Finnish highways. (A similar concept has been explored in comic [[162: Angular Momentum]].)
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{what if|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|No, not even if we change the requirements to just the passengers staying alive.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{what if|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|Aroldis Chapman could throw a golf ball to a height of sixteen giraffes.
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{what if|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|No. If the construction cost of the setpiece is how this is measured, then it would be U2's "Last Night on Earth" on a section of Interstate Highway. If not, then it doesn't even come close to Thriller.
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{what if|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|The finger holes would collapse and then not much would happen.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{what if|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They would see pretty much nothing with regular telescopes. The detection could be possible with radio technology.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{what if|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|If the British Empire kept the borders it had when the question was written, it would continue to experience eternal sunshine for many thousands of years until a total eclipse hits the Pitcairn Islands at the right time. However, after the publication of this article, it has been announced that [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire the British Indian Ocean Territory will become part of Mauritus] in March 2025, allowing the Sun to finally set on the British Empire.
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{what if|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|We would see a variety of benefits across our lives such as the elimination of time zones, more reliable satellites, easier astronomy, and safer wild parsnip, but the downside is we would all freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|
|-
|[[File:Extreme Boating.png|100px]]
|'''{{what if|50|Extreme Boating}}'''
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
<div align="right">—Nicholas Aron</div>
|It would be difficult to row the boat on Mercury because it's very dense. Bromine smells terrible and is highly toxic. Gallium would dissolve an aluminium boat. Liquid tungsten would incinerate you instantly. Liquid nitrogen would kill you either by suffocation or hypothermia. Liquid helium's superfluid properties would sink your boat, but at least you'd hear the Third Sound as you die.
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{what if|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|It takes 26 seconds to fall from the top of {{w|Mount Thor}} into a pit of cotton candy at the bottom of the cliff. The record for the longest wingsuit glide is enough time for Joey Chestnut and Takeru Kobayashi to eat 45 hot dogs.
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{what if|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{what if|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|{{notice|Joke unclear, need more factual explanation first.}}As the sea recedes, the Dutch are able to take over the world because they no longer have to prevent the Netherlands from flooding. Due to the nature of bathymetry, many shallow seas and deep trenches will still remain as the basins get cut off from the drain.
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{what if|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|{{notice|Joke unclear, factual explanation to short.}}The water would make odd-shaped coastlines as it fills the {{w|Valles Marineris}}, and once it's done, the Netherlands would colonize Mars through the portal.
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{what if|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|The chances are 1 in 40000, but you might want to be careful, as there's also a 1 in a billion chance that the person you called just murdered someone.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{what if|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|A steel cable an inch thick, the lines of an army of fishermen, or the hair of 20 people. Hair has the highest tensile strength of any material in your body.
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{what if|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|An inch or a foot wouldn't do much, it would only feel like a 3.5 magnitude earthquake. Dropped from its own height, Denali would cause a magnitude 7 earthquake and crush coal to diamonds. Dropped from space, that's just a large asteroid and it would cause an impact winter.
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{what if|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |No, because you need to go 8 km/s to stay in orbit, and it would take impossible amounts of fuel to slow down.
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{what if|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|{{notice|Too short}}You'd need six printers, but the ink would cost much more than you could afford, and filing the edits would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{what if|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{what if|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|At highway speeds, you could wreck your tires and suspension. Around 150-300 mph, the aerodynamics of a typical sedan will cause it to flip and crash before even reaching the speed bump. At 90% the speed of light, you could face a billion-dollar speeding ticket.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{what if|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|{{notice|Too short}}2500 cubic feet, although a balloon that big could just be used as a parachute, no helium needed.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{what if|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|{{notice|How thick would the layer be? Explain}}Roughly an 4.5 km thick layer, enough to bury the world many times.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{what if|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|{{notice|Too short}}Assuming you had a good coat, you would survive to the death zone (around 8000 meters up, where oxygen concentration become too low to breathe) and die.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{what if|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{what if|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{what if|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|{{notice|Too short}}About a year, but, after several decades, the pressure would increase so much the air would become toxic. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{what if|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|{{notice|Too short}}Yes, but it would be very inconvenient due to differing gravity and the possibility of entering orbit.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{what if|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|{{notice|Too short}}A decade or a century, depending on if Facebook would still be popular.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{what if|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|
|{{blog|70|2013|11|05}}
|
|
|-
|[[File:Stirring Tea.png|100px]]
|'''{{what if|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{what if|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|{{notice|Too short}}Possibly the Apollo Astronauts but they definitely weren't lonely.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{what if|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|{{notice|Too short}}About 2.3 AU.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{what if|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|{{notice|Too short}}0.0000005%.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{what if|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|{{notice|Explain how we got to this one}}"Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{what if|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|{{notice|Too short}}Depends, as many were burned.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{what if|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|{{notice|Too short}}10 to 12 meters.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{what if|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|One large-sized one or two small-sized ones per day.
|{{blog|78|2014|01|07}}
|{{book|2|7}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{what if|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|{{notice|Why?}}Not strong enough to make a difference.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{what if|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{what if|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{what if|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|{{notice|Too short}}The baseball is much harder.
|{{blog|82|2014|02|05|1d late}}
|
|
|-
|[[File:Star Sand.png|100px]]
|'''{{what if|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|{{notice|Too short}}It would be a bunch of boulders with some patches of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{what if|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|No, only about as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{what if|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|{{notice|"If you cheat"?}}If you cheat, a bag a little smaller than the Moon.
|{{blog|85|2014|02|25}}
|
|
|-
|[[File:Far-Traveling Objects.png|100px]]
|'''{{what if|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|{{notice|How much? Explain}}The Mariner 1 has traveled much farther than Voyager 1.
|{{blog|86|2014|03|04}}
|
|
|-
|[[File:Enforced by Radar.png|100px]]
|'''{{what if|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Intense enough to cause a medium sized nuclear explosion. Better to just carry a sign.
|{{blog|87|2014|03|11}}
|
|
|-
|[[File:Soda Sequestration.png|100px]]
|'''{{what if|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|Enough soda to cover Earth with ten layers of cans.
|{{blog|88|2014|03|18}}
|
|
|-
|[[File:Tungsten Countertop.png|100px]]
|'''{{what if|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|{{notice|Too short}}It would be vapourized before it got close to the Sun.
|{{blog|89|2014|03|25}}
|
|
|-
|[[File:Great Tree, Great Axe.png|100px]]
|'''{{what if|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|
|{{blog|90|2014|04|03|2d late}}
|
|
|-
|[[File:Faucet Power.png|100px]]
|'''{{what if|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|
|{{blog|91|2014|04|08|2d early}}
|
|
|-
|[[File:One-Second Day.png|100px]]
|'''{{what if|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
|
|-
|[[File:Windshield Raindrops.png|100px]]
|'''{{what if|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Fast enough so you would need a speedometer in scientific notation.
|{{blog|93|2014|04|22}}
|
|
|-
|[[File:Billion-Story Building.png|100px]]
|'''{{what if|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|First of all, it would not stand under its own weight. Also, it would be many times the distance the Earth is from the Moon.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{what if|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|
|{{blog|95|2014|05|06}}
|
|
|-
|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{what if|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|They would not be able to pay off the debt, even if they forced humanity to work as slaves from now until the stars die.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
|
|-
|[[File:Burning Pollen.png|100px]]
|'''{{what if|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a very tiny bit, but only because it's so thinly spread. Gathering all of it from a large enough region into one pile could equal a nuclear weapon.
|{{blog|97|2014|05|20|1d early}}
|
|
|-
|[[File:Blood Alcohol.png|100px]]
|'''{{what if|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|
|{{blog|98|2014|05|27}}
|{{book|2|42}}
|
|-
|[[File:Starlings.png|100px]]
|'''{{what if|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|{{notice|Too short}}Enough to make a black hole.
|{{blog|99|2014|06|03}}
|
|
|-
|[[File:WWII Films.png|100px]]
|'''{{what if|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|
|{{blog|100|2014|06|11|1d late}}
|
|
|-
|[[File:Plastic Dinosaurs.png|100px]]
|'''{{what if|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|
|{{blog|101|2014|06|18}}
|{{book|2|26}}
|
|-
|[[File:Keyboard Power.png|100px]]
|'''{{what if|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|{{notice|Too short}}Less than enough energy to microwave a burrito.
|{{blog|102|2014|06|25}}
|
|
|-
|[[File:Vanishing Water.png|100px]]
|'''{{what if|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|
|{{blog|103|2014|07|02}}
|
|
|-
|[[File:Global Snow.png|100px]]
|'''{{what if|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|
|{{blog|104|2014|07|09}}
|{{book|2|59}}
|
|-
|[[File:Cannibalism.png|100px]]
|'''{{what if|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|Depends, if you’re the only one trying out this new diet, maybe a week before you get caught. If the entire world brooms in, about 32 months.
|{{blog|105|2014|07|16}}
|
|
|-
|[[File:Ink Molecules.png|100px]]
|'''{{what if|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|{{notice|Too short}}An 18-digit number.
|{{blog|106|2014|07|23}}
|
|
|-
|[[File:Letter to Mom.png|100px]]
|'''{{what if|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|
|{{blog|107|2014|07|30}}
|
|
|-
|[[File:Expensive Shoebox.png|100px]]
|'''{{what if|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|{{notice|A little too vague.}}There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000.
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
|
|-
|[[File:Into the Blue.png|100px]]
|'''{{what if|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Most of the time it would not hit anything.
|{{blog|109|2014|08|20}}
|
|
|-
|[[File:Walking New York.png|100px]]
|'''{{what if|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|{{notice|Too short}}Yes, in around 30 years, but you'd end up in prison.
|{{blog|110|2014|08|27}}
|
|
|-
|[[File:All the Money.png|100px]]
|'''{{what if|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|The only thing to do would be to make a swimming pool, as it is unlikely anybody else would agree with your claims to all the money and property.
|{{blog|111|2014|09|02|1d early}}
|
|
|-
|[[File:Balloon Car.png|100px]]
|'''{{what if|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
|
|
|-
|[[File:Visit Every State.png|100px]]
|'''{{what if|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
As discussed by Stephen von Worley on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ ''Data Pointed'']
|In just over 6 hours, in 5 satellite orbits.
|{{blog|113|2014|09|24}}
|
|
|-
|[[File:Antimatter.png|100px]]
|'''{{what if|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|{{notice|Too short}}Our existence would end, but much slower than in most other situations, from outer-space gas and meteorites.
|{{blog|114|2014|10|01}}
|
|
|-
|[[File:Into the Sun.png|100px]]
|'''{{what if|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface. The core, on the other hand, would vaporize you.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{what if|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{what if|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
|
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|-
|[[File:Physical Salary.png|100px]]
|'''{{what if|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|{{notice|This is obvious. Explain both scenarios.}}A normal person would not get buried. A CEO, on the other hand, would be in trouble.
|{{blog|118|2014|10|30}}
|
|
|-
|[[File:Laser Umbrella.png|100px]]
|'''{{what if|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It would be very complicated, not worth it, and would probably make everything around you catch fire.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{what if|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
|
|
|-
|[[File:Frozen Rivers.png|100px]]
|'''{{what if|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
|
|
|-
|[[File:Lava Lamp.png|100px]]
|'''{{what if|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
|
|-
|[[File:Fairy Demographics.png|100px]]
|'''{{what if|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
|
|
|-
|[[File:Lunar Swimming.png|100px]]
|'''{{what if|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
|
|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{what if|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|Two hours and 20 minutes.
|{{blog|125|2015|01|15}}
|
|
|-
|[[File:Stairs (What If?).png|100px]]
|'''{{what if|126|Stairs}}'''
|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
|A week or two for a professional stair-climber. Half a day by motorcycle.
|{{blog|126|2015|01|22}}
|
|
|-
|[[File:Tug of War.png|100px]]
|'''{{what if|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|
|{{blog|127|2015|01|28|1d early}}
|
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|-
|[[File:Zippo Phone.png|100px]]
|'''{{what if|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
|
|
|-
|[[File:Black Hole Moon.png|100px]]
|'''{{what if|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|It would not have a big impact unless it happened during the space age.
|{{blog|129|2015|02|12}}
|
|
|-
|[[File:Snow Removal.png|100px]]
|'''{{what if|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|
|{{blog|130|2015|02|19}}
|
|
|-
|[[File:Microwaves.png|100px]]
|'''{{what if|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|
|{{blog|131|2015|02|27|1d late}}
|
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|-
|[[File:Hotter than Average.png|100px]]
|'''{{what if|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|{{notice|Explain, what's a water average?}}There is a water average. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
|
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|-
|[[File:Flagpole.png|100px]]
|'''{{what if|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|
|{{blog|133|2015|03|17|3d late}}
|
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|-
|[[File:Space Burial.png|100px]]
|'''{{what if|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|
|{{blog|134|2015|03|28|4d late}}
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|-
|[[File:Digging Downward.png|100px]]
|'''{{what if|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|
|{{blog|135|2015|04|05|1d late}}
|
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|-
|[[File:Spiders vs. the Sun.png|100px]]
|'''{{what if|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun. But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
|
|-
|[[File:New Horizons.png|100px]]
|'''{{what if|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
|
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|-
|[[File:Jupiter Submarine.png|100px]]
|'''{{what if|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|
|{{blog|138|2015|07|28|7d late}}
|
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|-
|[[File:Jupiter Descending.png|100px]]
|'''{{what if|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|{{notice|Too short}}You would see... brown.
|{{blog|139|2015|08|04}}
|
|
|-
|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{what if|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
|
|-
|[[File:Sunbeam.png|100px]]
|'''{{what if|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|
|{{blog|141|2016|01|12|3m 18d late}}
|
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|-
|[[File:Space Jetta.png|100px]]
|'''{{what if|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why?}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
|
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|-
|[[File:Europa Water Siphon.png|100px]]
|'''{{what if|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
|
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|-
|[[File:Saliva Pool.png|100px]]
|'''{{what if|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|{{notice|Too short. Why? How?}}It would take them 8345 years.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
|
|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{what if|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|
|{{blog|145|2016|02|09}}
|{{book|2|51}}
|
|-
|[[File:Stop Jupiter.png|100px]]
|'''{{what if|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|{{notice|Why?}}This can never happen, even if we were to throw Earth at Jupiter.
|{{blog|146|2016|02|16}}
|
|
|-
|[[File:Niagara Straw.png|100px]]
|'''{{what if|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|{{notice|Too short, last part.}}The International Niagara Committee, the International Niagara Board of Control, the International Joint Commission, the International Niagara Board Working Committee, and probably the Great Lakes–St. Lawrence River Adaptive Management Committee would get angry. The Earth would also be destroyed.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|
|-
|[[File:Eat the Sun.png|100px]]
|'''{{what if|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|
|{{blog|148|2016|03|12|8d late}}
|
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|-
|[[File:Pizza Bird.png|100px]]
|'''{{what if|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|
|{{blog|149|2016|03|26|7d late}}
|
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|-
|[[File:Tatooine Rainbow.png|100px]]
|'''{{what if|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|
|{{blog|150|2016|05|23|1m 21d late}}
|
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|-
|[[File:Sun Bug.png|100px]]
|'''{{what if|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|
|{{blog|151|2016|07|21|1m 23d late}}
|
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|-
|[[File:Flood Death Valley.png|100px]]
|'''{{what if|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|
|{{blog|152|2016|10|18|2m 21d late}}
|
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|-
|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
|
|
|-
|[[File:Hide the Atmosphere.png|100px]]
|'''{{what if|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
|
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|-
|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{what if|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
|
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|[[File:Toaster vs. Freezer.png|100px]]
|'''{{what if|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ My Brother, My Brother, and Me], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ Episode 343], discussing a Yahoo Answers question</div>
|
|{{blog|155|2017|02|28|13d late}}
|
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|-
|[[File:Electrofishing for Whales.png|100px]]
|'''{{what if|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
|
|
|-
|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{what if|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
|
|-
|[[File:Hot Banana.png|100px]]
|'''{{what if|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
|
|
|-
|[[File:Hailstones.png|100px]]
|'''{{what if|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|There's no real chance of producing that big hail stones, but if they could be lethal even if staying indoors.
|{{blog|159|2022|07|05|1m 30d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|
|{{blog|160|2022|09|06|1m 26d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|{{notice|Too short}}Australia owns most of the galaxy at certain points in time.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
|
|
|-
|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
|
|
|
|{{book|1|4}}
|
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|8}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
|
|
|
|{{book|1|12}}
|
|-
|
|'''The Last Human Light'''
|
|
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
|
|
|
|{{book|1|16}}
|
|-
|
|'''Orbital Submarine'''
|
|
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
|
|
|
|{{book|1|20}}
|
|-
|
|'''Human Computer'''
|
|
|
|{{book|1|21}}
|
|-
|
|'''Common Cold'''
|
|
|
|{{book|1|25}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
|
|
|
|{{book|1|27}}
|
|-
|
|'''No More DNA'''
|
|
|
|{{book|1|29}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
|
|
|
|{{book|1|31}}
|
|-
|
|'''Flyover States'''
|
|
|
|{{book|1|33}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
|
|
|
|{{book|1|36}}
|
|-
|
|'''Self-Fertilization'''
|
|
|
|{{book|1|37}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
|
|
|
|{{book|1|40}}
|
|-
|
|'''Lost Immortals'''
|
|
|
|{{book|1|42}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
|
|
|
|{{book|1|46}}
|
|-
|
|'''Sparta'''
|
|
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|
|
|
|{{book|1|51}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
|
|
|
|{{book|1|54}}
|
|-
|
|'''Weightless Arrow'''
|
|
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|
|
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
|
|
|
|{{book|1|64}}
|
|-
|
|'''Neutron Bullet'''
|
|
|
|{{book|1|67}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
|
|
|
|{{book|1|68}}
|
|-
|
|'''Richter 15'''
|
|
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die of Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We should have attached a transmitter as well.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain?
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No. Jupiter is bulletproof.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
|It would spark and then fizzle out.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine.
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature.
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|there would be direct tissue damage, and other horrifying effects. Side note: Do not attend Ms. Frizzle,s chemistry class.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occured to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Eliabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|It would smell like bleach or burning rubber, and would taste sour.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|in about 20 billion years, but you won't be able to physically touch it and survive.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
|
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

==Editors==
''[[#Article index|(jump back to table)]]''
===Add name of reader who asked the question.===
Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

===Add YouTube video===
<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

===Add book chapter===
For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}<noinclude>

===Link to a ''what if?'' article===
On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

''[[#Article index|(jump back to table)]]''
[[Category:What If?| 9]]{{xkcdmeta}}

what if? articles

2025-02-07T01:05:40Z

WriterArtistCoder: Clarified 18: BB Gun, 24: Model Rockets, 42: Longest Sunset, 121: Frozen Rivers, 122: Lava Lamp, 126: Stairs, 128: Zippo Phone; for #14, 25, 125 they should probably just read it

<noinclude>{{DISPLAYTITLE:''What If?'' chapters}}:''For other instances of this title, see [[What If (disambiguation)]].

</noinclude>==Article index==
<big>'''After more than 3 weeks and a TON of work by [[Talk:What If? chapters|so many people]], the two ''what if?'' tables have finally been merged.'''</big> --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:17, 3 February 2025 (UTC)

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Added: '''</big></span> '''All ~140 book-exclusive articles, each color-coded by book; reader question and Randall's answer for almost all ~70 [[What If? 2]]-exclusive articles; EVERY YouTube video and its associated article; over new 130 thumbnails uploaded; new article from [[What If? 10th Anniversary Edition|the new book]] and the [[what if? (blog)#top|deleted article]].'''

* <span style="background-color:#9eff9e;"><span style="color:green; font-size:1.4em;">''' ✓'''</span><big> '''Changes: '''</big></span> '''Merged columns No., Release date, and Weeks since last release; every column now easily sortable; columns Blog, Book (new), and YouTube (new) now use {{template|blog}} and {{template|book}} and are color-coded; split ''Short-Answer Sections'' into different cells; title bold and question italics and quoted

<span style="background-color:#ffc7c7;"><span style="color:red; font-size:1.4em;">''' '''</span><big> '''Things left to do: '''</big></span>  ''(If you need help editing the table, check out the ''[[What If? chapters#Editors|Editors section]]''! It includes a simple summary of the templates' documentations.)''

*We mostly only need to work on the explanations now! Add them for the articles that don't have one and improve the existing ones (they should be a summary of the answer, not just 1-2 sentences).
*Finish adding the name(s) of the readers who asked each questions. It's easy! The instructions are in the ''[[What If? chapters#Editors|Editors section]]''!
*Need to add all the questions from the first [[What If? (book)|''What If?'' book]] and a summary of each answer!
*Randall has released a new book, "''[[What If? 10th Anniversary Edition|What If? 10th Anniversary Edition]]''". [[What If? 10th Anniversary Edition|Add info about the new book]] and [[:Category:Books|update the old book pages]]!

<div style="display:none;">__TOC__</div>This is an index of all articles featured in Randall Munroe's ''what if?'' [[what if? (blog)|blog]] and [[:Category:Books|book series]]. For each article, the original question and a summary of Randall's answer are provided. If an article is available on the blog, you can click the title to read it in full. You can use the columns to sort the table alphabetically, by release date on the blog or YouTube, or by chapter in the books. The thumbnail is only available for articles published on the blog. If the title of a blog article differs from the one in the book, the latter will be provided in the Book column. A much simpler list that doesn't include book-exclusive articles can be found in the [https://what-if.xkcd.com/archive archive section] of the blog.

{| class="sortable wikitable"
! rowspan="2" scope="col" class="unsortable" | Thumbnail
! rowspan="2" scope="col" data-sort-type=text| Title
! rowspan="2" scope="col" data-sort-type=text| Reader's question
! rowspan="2" scope="col" class="unsortable" | Randall's answer
! colspan="3"| Article available in...  ''(click to sort)''
|-
! scope="col" data-sort-type=number | Blog
! scope="col" data-sort-type=number | Books
! scope="col" data-sort-type=number | YouTube
|-
|[[File:Relativistic Baseball.png|100px]]
|'''{{what if|1|Relativistic Baseball}}'''
|''"What would happen if you tried to hit a baseball pitched at 90% the speed of light?"''
<div align="right">—Ellen McManis</div>
|The ball would create plasma and reach home plate by about 70 nanoseconds. The result would be some kind of nuclear explosion, destroying everything about a mile from the field. A ruling of "{{w|hit by pitch}}" could be interpreted in this situation.
|{{blog|1|2012|07|10}}
|{{book|1|2}}
|{{book|5|2024|02|06|3EI08o-IGYk|What if you threw a baseball at nearly light speed?}}
|-
|[[File:SAT Guessing.png|100px]]
|'''{{what if|2|SAT Guessing}}'''
|''"What if everyone who took the SAT guessed on every multiple-choice question? How many perfect scores would there be?"''
<div align="right">—Rob Balder</div>
|No one would get a perfect score. The odds of guessing correctly on every question would be less than the odds of every ex-living president at that time and the main cast of [[:Category:Firefly|Firefly]] getting struck by lightning on the same day.
|{{blog|2|2012|07|10|7d early}}
|{{book|1|66}}
|
|-
|[[File:Yoda.png|100px]]
|'''{{what if|3|Yoda}}'''
|''"How much Force power can Yoda output?"''
<div align="right">—Ryan Finnie</div>
|Yoda can output about 19.2 kilowatts, or 25 horsepower. "Yoda power" would cost about $2/hour.
|{{blog|3|2012|07|17}}
|{{book|1|32}}
|
|-
|[[File:A Moles of Moles.png|100px]]
|'''{{what if|4|A Mole of Moles}}'''
|''"What would happen if you were to gather a mole (unit of measurement) of moles (the small furry critter) in one place?"''
<div align="right">—Sean Rice</div>
|A {{w|mole (unit)|mole}} is such a high number this would be tricky. They would condense into a pressurized sphere of meat that would freeze and occasionally explode from gases.
|{{blog|4|2012|07|24}}
|{{book|1|10}}
|
|-
|[[File:Robot Apocalypse.png|100px]]
|'''{{what if|5|Robot Apocalypse}}'''
|''"What if there was a robot apocalypse? How long would humanity last?"''
<div align="right">—Rob Lombino</div>
|Humanity would most likely survive. Most robots can easily be subdued because technology hasn’t been developed enough to allow them to walk, evade being destroyed, and kill us efficiently. They could decide to use our nuclear weapons, but that would hurt them more than us.
|{{blog|5|2012|07|31}}
|
|
|-
|[[File:Glass Half Empty.png|100px]]
|'''{{what if|6|Glass Half Empty}}'''
|''"What if a glass of water was, all of a sudden, literally half empty?"''
<div align="right">—Vittorio Iacovella</div>
|If the vacuum were on the bottom half, it would explode, but if it were on the top half, the air rushes in and it becomes normal water.
|{{blog|6|2012|08|07}}
|{{book|1|26}}
|{{book|16|2024|09|24|0EytSWiKrFg|What if a glass of water were LITERALLY half empty?}}
|-
|[[File:Everybody Out.png|100px]]
|'''{{what if|7|Everybody Out}}'''
|''"Is there enough energy to move the entire current human population off-planet?"''
<div align="right">—Adam</div>
|No, at least not without starving to death quickly and leaving our pets, belongings, and everything else behind. The best way to do it is either with a space tether or to ride the shockwave of a nuclear bomb, but the former lacks a good material and the latter is literally ''riding the shockwave of a nuclear bomb''. In any case, highly impractical.
|{{blog|7|2012|08|14}}
|{{book|1|35}}
|
|-
|[[File:Everybody Jump.png|100px]]
|'''{{what if|8|Everybody Jump}}'''
|''"What would happen if everyone on earth stood as close to each other as they could and jumped, everyone landing on the ground at the same instant?"''
<div align="right">—Thomas Bennett (and many others)</div>
|Earth would be unaffected, but almost all humans would probably be wiped out due to everyone trying to get home at the same time.
|{{blog|8|2012|08|21}}
|{{book|1|9}}
|{{book|9|2024|04|16|p2M8Y0z9Rl0|What if everyone jumped at once?}}
|-
|[[File:Soul Mates.png|100px]]
|'''{{what if|9|Soul Mates}}'''
|''"What if everyone actually had only one soul mate, a random person somewhere in the world?"''
<div align="right">—Benjamin Staffin</div>
|Almost nobody would find their soul mate, so most people would probably fake love, due to the difficult nature of finding true love and staying with someone.
|{{blog|9|2012|08|28}}
|{{book|1|6}}
|
|-
|[[File:Cassini.png|100px]]
|'''{{what if|10|Cassini}}'''
|''"What would the world be like if the land masses were spread out the same way as now - only rotated by an angle of 90 degrees?"''
<div align="right">—Socke</div>
|Hard to tell with any sort of certainty, but North America remains the same (just flipped, so Canada is tropical), South America becomes more like Europe before this question, Asia is flipped just like North America was, Europe becomes more like southeast Asia, Africa's climate is essentially rotated 90 degrees and East Africa gets a lot more tornadoes, Australia is colder and wetter, and Antarctica becomes a tropical rainforest. Of course, the biosphere collapses due to the shuffling and the ice caps (prematurely) melt, while also making certain wildlife appear elsewhere than normal.
|{{blog|10|2012|09|04}}
|
|
|-
|[[File:Droppings.png|100px]]
|'''{{what if|11|Droppings}}'''
|''"If you went outside and lay down on your back with your mouth open, how long would you have to wait until a bird pooped in it?"''
<div align="right">—Adrienne Olson</div>
|Assuming you are in an area with a reasonable number of birds, you'd have to wait about 195 years.
|{{blog|11|2012|09|11}}
|
|
|-
|[[File:Raindrop.png|100px]]
|'''{{what if|12|Raindrop}}'''
|''"What if a rainstorm dropped all of its water in a single giant drop?"''
<div align="right">—Michael McNeill</div>
|The surrounding area would be obliterated via the violent rush of crushing water, causing flash flooding in the surrounding area. There would be mass confusion for many following years.
|{{blog|12|2012|09|18}}
|{{book|1|65}}
|
|-
|[[File:Laser Pointer.png|100px]]
|'''{{what if|13|Laser Pointer}}'''
|''"If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?"''
<div align="right">—Peter Lipowicz</div>
|It would take lots of power, but yes, assuming you want to drain the Earth's oil and cover Asia in megawatt lasers. Going even further in power level fries the Earth and launches the Moon into the solar system.
|{{blog|13|2012|09|25}}
|{{book|1|7}}
|{{book|18|2024|11|05|JqFSGkFPipM|What if everyone pointed a laser at the moon?}}
|-
| rowspan="7" |[[File:Short Answer Section.png|100px]]
| rowspan="7" |'''{{what if|14|Short Answer Section}}'''
|''"How long would the Sun last if a giant water hose were focused upon it?"''
<div align="right">—Austin Dickey</div>
|The Sun would actually burn brighter due to water being mostly hydrogen (main fusion fuel of stars) and eventually become a black hole with all the mass of the water.
| rowspan="7"{{blog|14|2012|10|02}}
| rowspan="7" |
| rowspan="7" |
|-
|''"What if you shined a flashlight (or a laser) into a sphere made of one-way mirror glass?"''
<div align="right">—Chase Montgomery</div>
|One-way glass does not exist. The light shines through just like normal glass.
|-
|''"If Michael Phelps could hold his breath indefinitely, how long would it take for him to reach the lowest point in the ocean and back if he swam straight down and then straight back up?"''
<div align="right">—Jimmy Morey</div>
|Michael Phelps would die somewhere between 100 and 400 meters of depth. If he were immune to pressure, then it would take 3 hours to swim to the bottom of the Marianas Trench and back.
|-
|''"In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?"''
<div align="right">—Aidan Blake</div>
|Superman wasn't pushing the Earth. He was flying {{w|Superluminal motion|superluminally}} and was thus travelling back through time.
|-
|''"How fast would you have to go in your car to run a red light claiming that it appeared green to you due to the Doppler Effect?"''
<div align="right">—Yitzi Turniansky</div>
|The {{w|Doppler Effect}} is when waves (such as light or sound) change based on movement or position. You would need to go about one sixth of the {{w|speed of light}}.
|-
|''"What would happen if you opened a portal between Boston (sea level) and Mexico City (elev. 8000+ feet)?"''
<div align="right">—Jake G.</div>
|There would be winds of 440 mph (708 km/h) sucking Boston into Mexico City.
|-
|''"When my wife and I started dating she invited me over for dinner at one time. Her kitchen had something called Bauhaus chairs, which are full of holes, approx 5-6 millimeters in diameter in both back and seat. During this lovely dinner I was forced to liberate a small portion of wind and was relieved that I managed to do so very discretely. Only to find that the chair I sat on converted the successful silence into a perfect, and loud, flute note. We were both (luckily) amazed and surprised and I have often wondered what the odds are for something like that happening. We kept the chairs for five years but despite laborious attempts it couldn't be reproduced."''
<div align="right">—R. D.</div>
|This... isn’t actually a question, but thank you for sharing!
|-
|[[File:Mariana Trench Explosion.png|100px]]
|'''{{what if|15|Mariana Trench Explosion}}'''
|''"What if you exploded a nuclear bomb (say, the Tsar Bomba) at the bottom of the Marianas Trench?"''
<div align="right">—Evin Sellin</div>
|It would warm a small patch of the ocean and not do much. With a bigger bomb, it could destroy the world.
|{{blog|15|2012|10|09}}
|
|
|-
| rowspan="6" |[[File:Today's topic- Lightning.png|100px]]
| rowspan="6" |'''{{what if|16|Today's topic: Lightning}}'''
|''"How dangerous is it to be in a pool during a thunderstorm?"''
<div align="right">—Jay Gengelbach</div>
|Pretty dangerous, as if the pool was hit, 20,000 amps of electricity from the lightning bolt would spread across the surface and shock you. Randall recommends that one should stay at least 12 meters away from a pool during a thunderstorm.
| rowspan="6"{{blog|16|2012|10|16}}
| rowspan="6"{{book|1|19|Lightning}}
| rowspan="6" |
|-
|''"What would happen if you were taking a shower or standing under a waterfall when you were struck by lightning?"''
<div align="right">—Same3Chords</div>
|The droplets of water wouldn’t be dangerous, but a tub of water or any puddle you stand in ''will'' be dangerous.
|-
|''"What would happen if you were in a boat, plane or a submarine that got hit by lightning?"''
<div align="right">—Soobnauce</div>
|A boat would be as safe as a car if it had a cabin and lightning protection, while a submarine would be completely safe. The plane was not mentioned.
|-
|''"What if you were changing the light at the top of a radio tower and lightning struck? Or what if you were doing a backflip? Or standing in a graphite field? Or looking straight up at the bolt?"''
<div align="right">—Danny Wedul</div>
|You would get shocked normally if you were on a radio tower, doing a backflip, or looking straight up. These all don’t matter much. Randall doesn’t know what a graphite field is and chose not to answer that part of the question.
|-
|''"What would happen if lightning struck a bullet in midair?"''
<div align="right">—Timothy Campbell</div>
|The bullet might be heated a little bit, but it’s travelling too fast to have any impact.
|-
|''"What if you were flashing your BIOS during a thunderstorm and you got hit by lightning?"''
<div align="right">—NJSG</div>
|It would bring you to “Microsoft BOB®”, “Gateway 2000 Edition”.
|-
|[[File:Green Cows.png|100px]]
|'''{{what if|17|Green Cows}}'''
|''"If cows could photosynthesize, how much less food would they need?"''
<div align="right">—Anonymous</div>
|They would need 4% less food. There simply isn't enough area on the cow for photosynthesis to provide all its energy requirements. Plus, it’d still need food for nutrients just like real plants.
|{{blog|17|2012|10|23}}
|
|
|-
|[[File:BB Gun.png|100px]]
|'''{{what if|18|BB Gun}}'''
|''"In Armageddon, a NASA guy comments that a plan to shoot a laser at the asteroid is like “shooting a b.b. gun at a freight train.” What would it take to stop an out-of-control freight train using only b.b. guns?"''
<div align="right">—Charles James O’Keefe</div>
|100,000 shooters distributed over 2 kilometers of track, each firing a few dozen rounds as the train comes near them.
|{{blog|18|2012|10|30}}
|
|
|-
|[[File:Tie Vote.png|100px]]
|'''{{what if|19|Tie Vote}}'''
|''"What if there's LITERALLY a tie?"''
<div align="right">—[https://twitter.com/fivethirtyeight/status/154434288287363072 Nate Silver]</div>
|In the case of each candidate getting the exact same amount of votes on Election Day, most states would randomly pick one, whether it be through tossing a coin, drawing a name or straws. The chances of this happening in 9 battleground states would be about equal to the elector drawing a name from a hat, then being smashed by a bale of cocaine by drug smugglers and obliterated by a meteorite impact while being swept away in a tornado.
|{{blog|19|2012|11|06}}
|
|
|-
|[[File:Diamond.png|100px]]
|'''{{what if|20|Diamond}}'''
|''"If a meteor made out of diamond and 100 feet in diameter was traveling at the speed of light and hit the earth, what would happen to it?"''
<div align="right">—Aidan Smith, Age 8, via his father Jeff</div>
|Nothing made of matter can travel at the speed of light, but at the closest speed observed (99.99999999999999999999951% of the speed of light, the speed of the Oh My God Particle), the Earth would explode with enough force to obliterate the entire solar system.
|{{blog|20|2012|11|13}}
|
|
|-
|[[File:Machine Gun Jetpack.png|100px]]
|'''{{what if|21|Machine Gun Jetpack}}'''
|''"Is it possible to build a jetpack using downward firing machine guns?"''
<div align="right">—Rob B</div>
|You'd need a Russian 30 mm rotary cannon to do it optimally, and the excessive force would definitely hurt you. If you braced the rider, created an aerodynamic craft strong enough to survive the acceleration, and cooled the craft, you'd be able to jump mountains.
|{{blog|21|2012|11|20}}
|{{book|1|14}}
|
|-
|[[File:Cost of Pennies.png|100px]]
|'''{{what if|22|Cost of Pennies}}'''
|''"If you carry a penny in your coin tray, how long would it take for that penny to cost you more than a cent in extra gas?"''
<div align="right">—Leto Atreides</div>
|
|{{blog|22|2012|11|27}}
|
|
|-
| rowspan="7" |[[File:Short Answer Section II.png|100px]]
| rowspan="7" |'''{{what if|23|Short Answer Section II}}'''
|''"If my printer could literally print out money, would it have that big an effect on the world?"''
<div align="right">—Derek O’Brien</div>
| You'd make 200 million dollars a year, so no.
| rowspan="7"{{blog|23|2012|12|04}}
| rowspan="7"{{book|1|18|Short-Answer Section}}
| rowspan="7" |
|-
|''"What would happen if you exploded a nuclear bomb in the eye of a hurricane? Would the storm cell be immediately vaporized?"''
<div align="right">—Rupert Bainbridge (and hundreds of others)</div>
|No. The National Oceanic and Atmospheric Administration has [https://www.aoml.noaa.gov/hrd-faq/#hurricane-mitigation:~:text=Stop%20a%20Hurricane%3F-,Nuclear%20Weapons,-Adding%20Hygroscopic%20Particles has published a response] explaining why it wouldn't work.
|-
|''"If everyone put little turbine generators on the downspouts of their houses and businesses, how much power would we generate? Would we ever generate enough power to offset the cost of the generators?"''
<div align="right">—Damien</div>
|If it's very rainy, it would generate 800 watts of power, which isn't enough to offset the cost of the generators.
|-
|''"Using only pronounceable letter combinations, how long would names have to be to give each star in the universe a unique one word name?"''
<div align="right">—Seamus Johnson</div>
|About 24 characters.
|-
|''"I bike to class sometimes. It's annoying biking in the wintertime, because it's so cold. How fast would I have to bike for my skin to warm up the way a spacecraft heats up during reentry?"''
<div align="right">—David Nai</div>
|You'd have to bike at 200 m/s, but you'd fry alive from overexerting your body.
|-
|''"How much physical space does the internet take up?"''
<div align="right">—Max L</div>
|Using humanity's total produced storage space from the last few years as an upper bound, and assuming 3.5" drives, the Internet is less than the size of an oil tank.
|-
|''"What if you strapped C4 to a boomerang? Could this be an effective weapon, or would it be as stupid as it sounds?"''
<div align="right">—Chad Macziewski</div>
|Aerodynamics aside, you'd have a bomb that comes back if you miss.
|-
|[[File:Model Rockets.png|100px]]
|'''{{what if|24|Model Rockets}}'''
|''"How many model rocket engines would it take to launch a real rocket into space?"''
<div align="right">—Greg Schock, PA</div>
|It would take about 65,000, but they’d have to be layered in a cone shape with about 30 stages so the vehicle has thrust for long enough. It could carry 60 kg, much of that spent on all the parts of the rocket that aren't the engine.
|{{blog|24|2012|12|11}}
|
|
|-
|[[File:Three Wise Men.png|100px]]
|'''{{what if|25|Three Wise Men}}'''
|''"The story of the three wise men got me wondering: What if you did walk towards a star at a fixed speed? What path would you trace on the Earth? Does it converge to a fixed cycle?"''
<div align="right">—N. Murdoch</div>
|}No, but it would make some really cool patterns due to various factors such as the Earth’s rotation and its position changing in its orbit around the Sun.
|{{blog|25|2012|12|18}}
|
|
|-
|[[File:Leap Seconds.png|100px]]
|'''{{what if|26|Leap Seconds}}'''
|''"Every now and then we have to insert a leap second because the Earth’s rotation is slowing down. Could we speed up Earth’s rotation, so that we do not need Leap Seconds?"''
<div align="right">—Anton (Berlin, Germany)</div>
|With 50 000 planets B-612 hitting the Earth each second and a few assumptions, we could stop worrying about leap seconds.
|{{blog|26|2012|12|31|6d late}}
|
|
|-
|[[File:Death Rates.png|100px]]
|'''{{what if|27|Death Rates}}'''
|''"If one randomly chosen extra person were to die each second somewhere on Earth, what impact would it have on the world population?"''
<div align="right">—Guy Petzall</div>
|{{notice|Too vague. How much slower, how dramatic?}}Not much, the world just has too many people. Population would still grow, just a bit slower. Although, the impacts ''would'' be pretty dramatic in some ways.
|{{blog|27|2013|01|08|1d late}}
|
|
|-
|[[File:Steak Drop.png|100px]]
|'''{{what if|28|Steak Drop}}'''
|''"From what height would you need to drop a steak for it to be cooked when it hit the ground?"''
<div align="right">—Alex Lahey</div>
|From the very edge of the atmosphere, but even in that case it might not be fully cooked.
|{{blog|28|2013|01|15}}
|{{book|1|23}}
|
|-
|[[File:Spent Fuel Pool.png|100px]]
|'''{{what if|29|Spent Fuel Pool}}'''
|''"What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I stay safely at the surface?"''
<div align="right">—Jonathan Bastien-Filiatrault</div>
|As long as you don't touch strange things and you don't swim too close to the fuel rods, it would be just like a regular pool. Except for the fact you would never make it to the pool, as somebody would notice and shoot you to death.
|{{blog|29|2013|01|22}}
|{{book|1|3}}
|{{book|8|2024|04|02|EFRUL7vKdU8|What if you swam in a nuclear storage pool?}}
|-
|[[File:Interplanetary Cessna.png|100px]]
|'''{{what if|30|Interplanetary Cessna}}'''
|''"What would happen if you tried to fly a normal Earth airplane above different Solar System bodies?"''
<div align="right">—Glen Chiacchieri</div>
|It would be difficult to fly on Mars, so you would crash. The gas giants also have this problem, and you would freeze and tumble. Titan and Venus are the best bets, but Titan is cold and Venus is full of sulfuric acid.
|{{blog|30|2013|01|29}}
|{{book|1|30}}
|
|-
|[[File:FedEx Bandwidth.png|100px]]
|'''{{what if|31|FedEx Bandwidth}}'''
|''"When - if ever - will the bandwidth of the Internet surpass that of FedEx?"''
<div align="right">—Johan Öbrink</div>
|Probably never, unless the Internet's transfer rate grows faster than storage rates, the Internet won't surpass an army of FedEx trucks. However, the ping times would be ''absurd''.
|{{blog|31|2013|02|05}}
|{{book|1|44}}
|
|-
|[[File:Hubble.png|100px]]
|'''{{what if|32|Hubble}}'''
|''"If the Hubble telescope were aimed at the Earth, how detailed would the images be?"''
<div align="right">—Kyle Rankin</div>
|
|{{blog|32|2013|02|12}}
|
|{{book|1|2023|11|29|2LSyizrk8-0|What if we aimed the Hubble Telescope at Earth?}}
|-
|[[File:Ships.png|100px]]
|'''{{what if|33|Ships}}'''
|''"How much would the sea level fall if every ship were removed all at once from the Earth's waters?"''
<div align="right">—Michael Toje</div>
|Less than a human hair's width.
|{{blog|33|2013|02|19}}
|
|
|-
|[[File:what if? Twitter.png|100px]]
|'''{{what if|34|Twitter}}'''
|''"How many unique English tweets are possible? How long would it take for the population of the world to read them all out loud?"''
<div align="right">—Eric H., Hopatcong, NJ</div>
|Since there are 2 * 10^46 meaningful English tweets, reading them all would take 10,000 "eternal years", with an eternal day being the length of time needed to wear down a mountain if a bird scraped 1 grain every thousand years.
|{{blog|34|2013|02|26}}
|{{book|1|50}}
|
|-
|[[File:Hair Dryer.png|100px]]
|'''{{what if|35|Hair Dryer}}'''
|''"What would happen if a hair dryer with continuous power was turned on and put in an airtight 1x1x1 meter box?"''
<div align="right">—Nathan Terrell</div>
|The box would heat until the ground starts melting, and going further, it would eventually create updrafts and bounce around everywhere. Turning it off and on again would launch it out of the sky in glowing fury.
|{{blog|35|2013|03|05}}
|{{book|1|11}}
|
|-
|[[File:Cornstarch.png|100px]]
|'''{{what if|36|Cornstarch}}'''
|''"How much cornstarch can I rinse down the drain before unpleasant things start to happen?"''
<div align="right">—Anna R., Fort Wayne, IN</div>
|
|{{blog|36|2013|03|12}}
|
|
|-
|[[File:Supersonic Stereo.png|100px]]
|'''{{what if|37|Supersonic Stereo}}'''
|''"What if you somehow managed to make a stereo travel at twice the speed of sound, would it sound backwards to someone who was just casually sitting somewhere as it flies by?"''
<div align="right">—Tim Currie</div>
|Assuming the stereo is indestructible, yes. Although you’d only get it supersonic for less than a second, and the music would be heavily compressed after the sonic boom.
|{{blog|37|2013|03|19}}
|
|
|-
|[[File:what if? Voyager.png|100px]]
|'''{{what if|38|Voyager}}'''
|''"With today's technology, would it be possible to launch an unmanned mission to retrieve Voyager I?"''
<div align="right">—Elliot Bennett</div>
|We could possibly spend a ton of money and resources to get a probe to Voyager. Getting it back is another story.
|{{blog|38|2013|03|26}}
|
|
|-
|[[File:Hockey Puck.png|100px]]
|'''{{what if|39|Hockey Puck}}'''
|''"How hard would a puck have to be shot to be able to knock the goalie himself backwards into the net?"''
<div align="right">—Tom</div>
|It doesn’t really work like that: at high enough speeds to knock the goalie back they’d both just splatter.
|{{blog|39|2013|04|02}}
|{{book|1|24}}
|
|-
|[[File:Pressure Cooker.png|100px]]
|'''{{what if|40|Pressure Cooker}}'''
|''"Am I right to be afraid of pressure cookers? What's the worst thing that can happen if you misuse a pressure cooker in an ordinary kitchen?"''
<div align="right">—Delphine Lourtau</div>
|Ordinarily, the worst that can happen is the lid blowing off and superheated liquid spraying everywhere, but you can use one to make {{w|Dioxygen difluoride}}, which is much worse.
|{{blog|40|2013|04|9}}
|
|
|-
|[[File:Go West.png|100px]]
|'''{{what if|41|Go West}}'''
|''"If everybody in the US drove west, could we temporarily halt continental drift?"''
<div align="right">—Derek</div>
|Not even by a bit, because the North American plate is just too heavy for people to make an impact in its movement.
|{{blog|41|2013|04|16}}
|
|
|-
|[[File:Longest Sunset.png|100px]]
|'''{{what if|42|Longest Sunset}}'''
|''"What is the longest possible sunset you can experience while driving, assuming we are obeying the speed limit and driving on paved roads?"''
<div align="right">—Michael Berg</div>
|95 minutes on certain Norewgian and Finnish highways. (A similar concept has been explored in comic [[162: Angular Momentum]].)
|{{blog|42|201304|23}}
|{{book|1|52}}
|
|-
|[[File:Train Loop.png|100px]]
|'''{{what if|43|Train Loop}}'''
|''"Could a high-speed train run through a vertical loop, like a rollercoaster, with the passengers staying comfortable?"''
<div align="right">—Gero Walter</div>
|No, not even if we change the requirements to just the passengers staying alive.
|{{blog|43|2013|04|30}}
|
|
|-
|[[File:High Throw.png|100px]]
|'''{{what if|44|High Throw}}'''
|''"How high can a human throw something?"''
<div align="right">—Irish Dave on the Isle of Man</div>
|
|{{blog|44|2013|05|07}}
|{{book|1|38}}
|
|-
|[[File:ISS Music Video.png|100px]]
|'''{{what if|45|ISS Music Video}}'''
|''"Is [https://www.youtube.com/watch?v=KaOC9danxNo '''this'''] the most expensive music video ever?"''
<div align="right">—Various Youtube commenters</div>
|
|{{blog|45|2013|05|14}}
|
|
|-
|[[File:Bowling Ball.png|100px]]
|'''{{what if|46|Bowling Ball}}'''
|''"I've been told that if the Earth were shrunk down to the size of a bowling ball, it would be smoother than said bowling ball. My question is, what would a bowling ball look like if it were blown up to the size of the Earth?"''
<div align="right">—Seth C.</div>
|The finger holes would collapse and then not much would happen.
|{{blog|46|2013|05|21}}
|
|
|-
|[[File:Alien Astronomers.png|100px]]
|'''{{what if|47|Alien Astronomers}}'''
|''"Let's assume there's life on the the nearest habitable exoplanet and that they have technology comparable to ours. If they looked at our star right now, what would they see?"''
<div align="right">—Chuck H.</div>
|They would see pretty much nothing with regular telescopes. The detection could be possible with radio technology.
|{{blog|47|2013|05|28}}
|{{book|1|28}}
|
|-
|[[File:Sunset on the British Empire.png|100px]]
|'''{{what if|48|Sunset on the British Empire}}'''
|''"When (if ever) did the Sun finally set on the British Empire?"''
<div align="right">—Kurt Amundson</div>
|{{notice|Rephrase the answer to be more clear}}It hasn't set and likely won’t for thousands of years, mostly due to various islands meaning the Sun is always on at least one… of course, until a solar eclipse strikes at a time when only one is in sunlight. (Fun fact: this question will be outdated in March 2025, as Mauritus gains the British Indian Ocean Territory [https://www.mondayeconomist.com/p/british-empire#:~:text=On%20March%2021st%2C%202025%2C%20a,part%20of%20the%20British%20Empire allowing the Sun to finally set on the British Empire].)
|{{blog|48|2013|06|04}}
|{{book|1|60}}
|
|-
|[[File:Sunless Earth.png|100px]]
|'''{{what if|49|Sunless Earth}}'''
|''"What would happen to the Earth if the Sun suddenly switched off?"''
<div align="right">—Many, many readers</div>
|{{notice|Too short}}We would see a variety of benefits across our lives (such as no sunburns and easier bridge construction) but we would also freeze and die.
|{{blog|49|2013|06|11}}
|{{book|1|57}}
|
|-
|[[File:Extreme Boating.png|100px]]
|'''{{what if|50|Extreme Boating}}'''
<div align="right">—Nicholas Aron</div>
|''"What would it be like to navigate a rowboat through a lake of mercury? What about bromine? Liquid gallium? Liquid tungsten? Liquid nitrogen? Liquid helium?"''
|
|{{blog|50|2013|06|18}}
|
|
|-
|[[File:Free Fall.png|100px]]
|'''{{what if|51|Free Fall}}'''
|''"What place on Earth would allow you to freefall the longest by jumping off it? What about using a squirrel suit?"''
<div align="right">—Dhash Shrivathsa</div>
|
|{{blog|51|2013|06|25}}
|{{book|1|45}}
|
|-
|[[File:Bouncy Balls.png|100px]]
|'''{{what if|52|Bouncy Balls}}'''
|''"What if one were to drop 3,000 bouncy balls from a seven story parking structure onto a person walking on the sidewalk below? Should the person survive, what would be the number of bouncy balls needed to kill them? What injuries would occur and what would the associated crimes be?"''
<div align="right">—Ginger Bread</div>
|Around 3,000,000 balls. Death would occur and you would be charged with manslaughter or murder.
|{{blog|52|2013|07|02}}
|
|
|-
|[[File:Drain the Oceans.png|100px]]
|'''{{what if|53|Drain the Oceans}}'''
|''"How quickly would the ocean's drain if a circular portal 10 meters in radius leading into space was created at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?"''
<div align="right">—Ted M.</div>
|
|{{blog|53|2013|07|09}}
|{{book|1|48}}
|{{book|12|2024|06|18|Jpy55EgMQgY|What if you drained the oceans?}}
|-
|[[File:Drain the Oceans Part II.png|100px]]
|'''{{what if|54|Drain the Oceans: Part II}}'''
|''"Supposing you did '''{{what if|53|Drain the Oceans}}''', and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?"''
<div align="right">—Iain</div>
|
|{{blog|54|2013|07|16}}
|{{book|1|49}}
|{{book|14|2024|08|13|FkUNHhVbQ1Q|What if we teleported the oceans to Mars?}}
|-
|[[File:Random Sneeze Call.png|100px]]
|'''{{what if|55|Random Sneeze Call}}'''
|''"If you call a random phone number and say "God bless you", what are the chances that the person who answers just sneezed? On average, not just in spring or fall."''
<div align="right">—Mimi</div>
|{{notice|Why?}}The chances are 1 in 40000, apparently.
|{{blog|55|2013|07|23}}
|{{book|1|53}}
|
|-
|[[File:Restraining an Airplane.png|100px]]
|'''{{what if|56|Restraining an Airplane}}'''
|''"If you wanted to anchor an airplane into the ground so it wouldn't be able to take off, what would the rope have to be made out of?"''
<div align="right">—Connor Childerhose</div>
|
|{{blog|56|2013|07|30}}
|
|
|-
|[[File:Dropping a Mountain.png|100px]]
|'''{{what if|57|Dropping a Mountain}}'''
|''"What if a huge mountain—Denali, say—had the bottom inch of its base disappear? What would happen from the impact of the mountain falling 1 inch? What about 1 foot? What if the mountain's base were raised to the present height of the summit, and then the whole thing were allowed to drop to the earth?"''
<div align="right">—John-Clark Levin</div>
|
|{{blog|57|2013|08|06}}
|
|
|-
| rowspan="3" |[[File:Orbital Speed.png|100px]]
| rowspan="3" |'''{{what if|58|Orbital Speed}}'''
|''"What if a spacecraft slowed down on re-entry to just a few miles per hour using rocket boosters like the Mars-sky-crane? Would it negate the need for a heat shield?"''
<div align="right">—Brian</div>
| rowspan="3" |
| rowspan="3"{{blog|58|2013|08|12|1d early}}
| rowspan="3"{{book|1|43}}
| rowspan="3" |
|-
|''"Is it possible for a spacecraft to control its reentry in such a way that it avoids the atmospheric compression and thus would not require the expensive (and relatively fragile) heat shield on the outside?"''
<div align="right">—Christopher Mallow</div>
|-
|''"Could a (small) rocket (with payload) be lifted to a high point in the atmosphere where it would only need a small rocket to get to escape velocity?"''
<div align="right">—Kenny Van de Maele</div>
|-
|[[File:Updating a Printed Wikipedia.png|100px]]
|'''{{what if|59|Updating a Printed Wikipedia}}'''
|''"If you had a printed version of the whole of (say, the English) Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?"''
<div align="right">—Susanne Könings</div>
|6, but they would cost much more than you could afford and filing would be a nightmare.
|{{blog|59|2013|08|20|1d late}}
|{{book|1|58}}
|{{book|13|2024|7|9|RgBYohJ7mIk|What if you tried to print Wikipedia?}}
|-
|[[File:Signs of Life.png|100px]]
|'''{{what if|60|Signs of Life}}'''
|''"If you could teleport to a random place of the surface of the Earth, what are the odds that you'll see signs of intelligent life?"''
<div align="right">—Borislav Stanimirov</div>
|70% of the time you would end up in the ocean, while most of the rest will be somewhere uninhabited. But if it’s night, you can see satellites just by looking up.
|{{blog|60|2013|08|27}}
|
|
|-
|[[File:Speed Bump.png|100px]]
|'''{{what if|61|Speed Bump}}'''
|''"How fast can you hit a speed bump while driving and live?"''
<div align="right">—Myrlin Barber</div>
|{{notice|Too short}}Surprisingly fast (at over around 250 mph your car would probably tumble and crash), but beware destroying the city, and fines.
|{{blog|61|2013|09|03}}
|{{book|1|41}}
|
|-
|[[File:Falling With Helium.png|100px]]
|'''{{what if|62|Falling With Helium}}'''
|''"What if I jumped out of an airplane with a couple of tanks of helium and one huge, un-inflated balloon? Then, while falling, I release the helium and fill the balloon. How long of a fall would I need in order for the balloon to slow me enough that I could land safely?"''
<div align="right">—Colin Rowe</div>
|{{notice|Too short}}2500 cubic feet, although a balloon that big could just be used as a parachute, no helium needed.
|{{blog|62|2013|09|10}}
|{{book|1|34}}
|
|-
|[[File:Google's Datacenters on Punch Cards.png|100px]]
|'''{{what if|63|Google's Datacenters on Punch Cards}}'''
|''"If all digital data were stored on punch cards, how big would Google's data warehouse be?"''
<div align="right">—James Zetlin</div>
|{{notice|How thick would the layer be? Explain}}Roughly an 4.5 km thick layer, enough to bury the world many times.
|{{blog|63|2013|09|17}}
|
|
|-
|[[File:Rising Steadily.png|100px]]
|'''{{what if|64|Rising Steadily}}'''
|''"If you suddenly began rising steadily at one foot per second, how exactly would you die? Would you freeze or suffocate first? Or something else?"''
<div align="right">—Rebecca B</div>
|{{notice|Too short}}Assuming you had a good coat, you would survive to the death zone (around 8000 meters up, where oxygen concentration become too low to breathe) and die.
|{{blog|64|2013|09|24}}
|{{book|1|15}}
|
|-
|[[File:Twitter Timeline Height.png|100px]]
|'''{{what if|65|Twitter Timeline Height}}'''
|''"If our Twitter timelines (tweets by the people we follow) actually extended off the screen in both directions, how tall would they be?"''
<div align="right">—Anonymous</div>
|
|{{blog|65|2013|10|01}}
|
|
|-
|[[File:500 MPH.png|100px]]
|'''{{what if|66|500 MPH}}'''
|''"If winds reached 500 mph, would it pick up a human?"''
<div align="right">—Grey Flynn, age 7, Stoneham, MA</div>
|
|{{blog|66|2013|10|08}}
|
|
|-
|[[File:Expanding Earth.png|100px]]
|'''{{what if|67|Expanding Earth}}'''
|''"How long would it take for people to notice their weight gain if the mean radius of the world expanded by 1cm every second? (Assuming the average composition of rock were maintained.)"''
<div align="right">—Dennis O’Donnell</div>
|{{notice|Too short}}About a year, but, after several decades, the pressure would increase so much the air would become toxic. After a few centuries, the Moon would fall into the Roche limit and crumble into rings.
|{{blog|67|2013|10|15}}
|{{book|1|55}}
|{{book|17|2024|10|15|-1-ldW4kpLM|What if Earth grew 1cm every second?}}
|-
|[[File:Little Planet.png|100px]]
|'''{{what if|68|Little Planet}}'''
|''"If an asteroid was very small but supermassive, could you really live on it like the Little Prince?"''
<div align="right">—Samantha Harper</div>
|{{notice|Too short}}Yes, but it would be very inconvenient due to differing gravity and the possibility of entering orbit.
|{{blog|68|2013|10|22}}
|{{book|1|22}}
|
|-
|[[File:Facebook of the Dead.png|100px]]
|'''{{what if|69|Facebook of the Dead}}'''
|''"When, if ever, will Facebook contain more profiles of dead people than of living ones?"''
<div align="right">—Emily Dunham</div>
|{{notice|Too short}}A decade or a century, depending on if Facebook would still be popular.
|{{blog|69|2013|10|29}}
|{{book|1|59}}
|
|-
|[[File:The Constant Groundskeeper.png|100px]]
|'''{{what if|70|The Constant Groundskeeper}}'''
|''"How big of a lawn would you have to have so that when you finished mowing you'd need to start over because the grass has grown?"''
<div align="right">—Nick Nelson</div>
|
|{{blog|70|2013|11|05}}
|
|
|-
|[[File:Stirring Tea.png|100px]]
|'''{{what if|71|Stirring Tea}}'''
|''"I was absentmindedly stirring a cup of hot tea, when I got to thinking, "aren't I actually adding kinetic energy into this cup?" I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?"''
<div align="right">—Will Evans</div>
|
|{{blog|71|2013|11|12}}
|{{book|1|61}}
|
|-
|[[File:Loneliest Human.png|100px]]
|'''{{what if|72|Loneliest Human}}'''
|''"What is the furthest one human being has ever been from every other living person? Were they lonely?"''
<div align="right">—Bryan J. McCarter</div>
|{{notice|Too short}}Possibly the Apollo Astronauts but they definitely weren't lonely.
|{{blog|72|2013|11|19}}
|{{book|1|63}}
|
|-
|[[File:Lethal Neutrinos.png|100px]]
|'''{{what if|73|Lethal Neutrinos}}'''
|''"How close would you have to be to a supernova to get a lethal dose of neutrino radiation?"''
<div align="right">—(Overheard in a physics department)</div>
|{{notice|Too short}}About 2.3 AU.
|{{blog|73|2013|11|26}}
|{{book|1|39}}
|
|-
|[[File:Soda Planet.png|100px]]
|'''{{what if|74|Soda Planet}}'''
|''"How much of the Earth's currently-existing water has ever been turned into a soft drink at some point in its history?"''
<div align="right">—Brian Roelofs</div>
|{{notice|Too short}}0.0000005%.
|{{blog|74|2013|12|03}}
|
|
|-
|[[File:Phone Keypad.png|100px]]
|'''{{what if|75|Phone Keypad}}'''
|''"I use one of those old phones where you type with numbers—for example, to type "Y", you press 9 three times. Some words have consecutive letters on the same number. When they do, you have to pause between letters, making those words annoying to type. What English word has the most consecutive letters on the same key?"''
<div align="right">—Stewart Bishop</div>
|{{notice|Explain how we got to this one}}"Nonmonogamous".
|{{blog|75|2013|12|10}}
|
|
|-
|[[File:Reading Every Book.png|100px]]
|'''{{what if|76|Reading Every Book}}'''
|''"At what point in human history were there too many (English) books to be able to read them all in one lifetime?"''
<div align="right">—Gregory Willmot</div>
|{{notice|Too short}}Depends, as many were burned.
|{{blog|76|2013|12|17}}
|{{book|2|10}}
|
|-
|[[File:Growth Rate.png|100px]]
|'''{{what if|77|Growth Rate}}'''
|''"What height would humans reach if we kept growing through our whole development period (i.e. till late teens/early twenties) at the same pace as we do during our first month?"''
<div align="right">—Maria</div>
|{{notice|Too short}}10 to 12 meters.
|{{blog|77|2013|12|31|7d late}}
|
|
|-
|[[File:T-rex Calories.png|100px]]
|'''{{what if|78|T-rex Calories}}'''
|''"If a T-rex were released in New York City, how many humans/day would it need to consume to get its needed calorie intake?"''
<div align="right">—Tony Schmitz</div>
|One large-sized one or two small-sized ones per day.
|{{blog|78|2014|01|07}}
|{{book|2|7}}
|
|-
|[[File:Lake Tea.png|100px]]
|'''{{what if|79|Lake Tea}}'''
|''"What if we were to dump all the tea in the world into the Great Lakes? How strong, compared to a regular cup of tea, would the lake tea be?"''
<div align="right">—Alex Burman</div>
|{{notice|Why?}}Not strong enough to make a difference.
|{{blog|79|2014|01|14}}
|
|
|-
|[[File:Pile of Viruses.png|100px]]
|'''{{what if|80|Pile of Viruses}}'''
|''"What if every virus in the world were collected into one area? How much volume would they take up and what would they look like?"''
<div align="right">—Dave</div>
|
|{{blog|80|2014|01|21}}
|
|
|-
|[[File:Catch!.png|100px]]
|'''{{what if|81|Catch!}}'''
|''"Is there any way to fire a gun so that the bullet flies through the air and can then be safely caught by hand? e.g. shooter is at sea level and catcher is up a mountain at the extreme range of the gun."''
<div align="right">—Ed Hui, London</div>
|
|{{blog|81|2014|01|28}}
|{{book|2|12}}
|
|-
|[[File:Hitting a comet.png|100px]]
|'''{{what if|82|Hitting a comet}}'''
|''"Astrophysicists are always saying things like "This mission to this comet is equivalent to throwing a baseball from New York and hitting a particular window in San Francisco." Are they really equivalent?"''
<div align="right">—Tom Foster</div>
|{{notice|Too short}}The baseball is much harder.
|{{blog|82|2014|02|05|1d late}}
|
|
|-
|[[File:Star Sand.png|100px]]
|'''{{what if|83|Star Sand}}'''
|''"If you made a beach using grains the proportionate size of the stars in the Milky Way, what would that beach look like?"''
<div align="right">—Jeff Wartes</div>
|{{notice|Too short}}It would be a bunch of boulders with some patches of sand.
|{{blog|83|2014|02|11|1d early}}
|{{book|2|16}}
|
|-
|[[File:Paint the Earth.png|100px]]
|'''{{what if|84|Paint the Earth}}'''
|''"Has humanity produced enough paint to cover the entire land area of the Earth?"''
<div align="right">—Josh (Bolton, MA)</div>
|No, only about as much as the land area of Russia.
|{{blog|84|2014|02|18}}
|{{book|2|14}}
|
|-
|[[File:Rocket Golf.png|100px]]
|'''{{what if|85|Rocket Golf}}'''
|''"Assuming that you have a spaceship in orbit around the Earth, could you propel your ship to speeds exceeding escape velocity by hitting golf balls in the other direction? If so, how many golf balls would be required to reach the Moon?"''
<div align="right">—Dan (Kanata, Ontario)</div>
|{{notice|"If you cheat"?}}If you cheat, a bag a little smaller than the Moon.
|{{blog|85|2014|02|25}}
|
|
|-
|[[File:Far-Traveling Objects.png|100px]]
|'''{{what if|86|Far-Traveling Objects}}'''
|''"In terms of human-made objects, has Voyager 1 travelled the farthest distance? It's certainly the farthest from Earth we know about. But what about the edge of ultracentrifuges, or generator turbines that have been running for years, for example?"''
<div align="right">—Matt Russell</div>
|{{notice|How much? Explain}}The Mariner 1 has traveled much farther than Voyager 1.
|{{blog|86|2014|03|04}}
|
|
|-
|[[File:Enforced by Radar.png|100px]]
|'''{{what if|87|Enforced by Radar}}'''
|''"I've occasionally seen "radar enforced" on speed limit signs, and I can't help but ask: How intense would radio waves have to be to stop a car from going over the speed limit, and what would happen if this were attempted?"''
<div align="right">—Joausc</div>
|Intense enough to cause a medium sized nuclear explosion. Better to just carry a sign.
|{{blog|87|2014|03|11}}
|
|
|-
|[[File:Soda Sequestration.png|100px]]
|'''{{what if|88|Soda Sequestration}}'''
|''"How much CO2 is contained in the world's stock of bottled fizzy drinks? How much soda would be needed to bring atmospheric CO2 back to preindustrial levels?"''
<div align="right">—Brandon Seah</div>
|Enough soda to cover Earth with ten layers of cans.
|{{blog|88|2014|03|18}}
|
|
|-
|[[File:Tungsten Countertop.png|100px]]
|'''{{what if|89|Tungsten Countertop}}'''
|''"How far would a tungsten countertop descend if I dropped it into the Sun?"''
<div align="right">—Michael Leuchtenburg</div>
|{{notice|Too short}}It would be vapourized before it got close to the Sun.
|{{blog|89|2014|03|25}}
|
|
|-
|[[File:Great Tree, Great Axe.png|100px]]
|'''{{what if|90|Great Tree, Great Axe}}'''
|''"If all the seas were one sea,''
''What a great sea that would be!''
''If all the trees were one tree,''
''What a great tree that would be!''
''If all the men were one man,''
''What a great man that would be!''
''If all the axes were one axe,''
''What a great axe that would be!''
''And if the great man took the great axe,''
''And cut down the great tree,''
''And let if fall into the great sea,''
''What a great splish-splash that would be!''

''... How great would all of these things be?"''
<div align="right">—John Eifert (quoting a ''Mother Goose'' rhyme)</div>
|
|{{blog|90|2014|04|03|2d late}}
|
|
|-
|[[File:Faucet Power.png|100px]]
|'''{{what if|91|Faucet Power}}'''
|''"I just moved into a new apartment. It includes hot water but I have to pay the electric bill. So being a person on a budget ... what's the best way to use my free faucet to generate electricity?"''
<div align="right">—David Axel Kurtz</div>
|
|{{blog|91|2014|04|08|2d early}}
|
|
|-
|[[File:One-Second Day.png|100px]]
|'''{{what if|92|One-Second Day}}'''
|''"What would happen if the Earth's rotation were sped up until a day only lasted one second?"''
<div align="right">—Dylan</div>
|Everything on Earth would die, but if it happened when the Moon crosses the plane of the Earth, then everything in the Solar System will die (whether there is a difference is debatable).
|{{blog|92|2014|04|15}}
|{{book|2|21}}
|
|-
|[[File:Windshield Raindrops.png|100px]]
|'''{{what if|93|Windshield Raindrops}}'''
|''"At what speed would you have to drive for rain to shatter your windshield?"''
<div align="right">—Daniel Butler</div>
|Fast enough so you would need a speedometer in scientific notation.
|{{blog|93|2014|04|22}}
|
|
|-
|[[File:Billion-Story Building.png|100px]]
|'''{{what if|94|Billion-Story Building}}'''
|''"My daughter — age 4.5 — maintains she wants a billion-story building. It turns out not only is that hard to help her appreciate this size, I am not at all able to explain all of the other difficulties you'd have to overcome."''
<div align="right">—Keira, via Steve Brodovicz, Media, PA </div>
|First of all, it would not stand under its own weight. Also, it would be many times the distance the Earth is from the Moon.
|{{blog|94|2014|04|29}}
|{{book|2|22}}
|
|-
|[[File:Pyramid Energy.png|100px]]
|'''{{what if|95|Pyramid Energy}}'''
|''"What took more energy, the building of the Great Pyramid of Giza or the Apollo Mission? If we could convert the energy to build the Great Pyramid, would it be enough to send a rocket to the Moon and back?"''
<div align="right">—Michael Marmol</div>
|
|{{blog|95|2014|05|06}}
|
|
|-
|[[File:$2 Undecillion Lawsuit.png|100px]]
|'''{{what if|96|$2 Undecillion Lawsuit}}'''
|''"What if Au Bon Pain lost '''[http://www.loweringthebar.net/2014/05/2-undecillion-dollar-demand.html this lawsuit]''' and had to pay the plaintiff $2 undecillion?"''
<div align="right">—Kevin Underhill</div>
|They would not be able to pay off the debt, even if they forced humanity to work as slaves from now until the stars die.
|{{blog|96|2014|05|14|1d late}}
|{{book|2|23}}
|
|-
|[[File:Burning Pollen.png|100px]]
|'''{{what if|97|Burning Pollen}}'''
|''"What if you were to somehow ignite the pollen that floats around in the air in spring? Other than being a really bad idea, what effect would it have?"''
<div align="right">—Jessica Thornburg</div>
|It would just warm up the air by a bit.
|{{blog|97|2014|05|20|1d early}}
|
|
|-
|[[File:Blood Alcohol.png|100px]]
|'''{{what if|98|Blood Alcohol}}'''
|''"Could you get drunk from drinking a drunk person's blood?"''
<div align="right">—Fiona Byrne</div>
|
|{{blog|98|2014|05|27}}
|{{book|2|42}}
|
|-
|[[File:Starlings.png|100px]]
|'''{{what if|99|Starlings}}'''
|''"I was watching '''[http://www.youtube.com/watch?v=eakKfY5aHmY this video]''' and was wondering: How many birds there would need to be for gravity to take over and force them into a gargantuan ball of birds?"''
<div align="right">—Justin Basinger</div>
|{{notice|Too short}}Enough to make a black hole.
|{{blog|99|2014|06|03}}
|
|
|-
|[[File:WWII Films.png|100px]]
|'''{{what if|100|WWII Films}}'''
|''"Did WWII last longer than the total length of movies about WWII? For that matter, which war has the highest movie time:war time ratio?"''
<div align="right">—Becky</div>
|
|{{blog|100|2014|06|11|1d late}}
|
|
|-
|[[File:Plastic Dinosaurs.png|100px]]
|'''{{what if|101|Plastic Dinosaurs}}'''
|''"As plastic is made from oil and oil is made from dead dinosaurs, how much actual real dinosaur is there in a plastic dinosaur?"''
<div align="right">—Steve Lydford</div>
|
|{{blog|101|2014|06|18}}
|{{book|2|26}}
|
|-
|[[File:Keyboard Power.png|100px]]
|'''{{what if|102|Keyboard Power}}'''
|''"As a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel."''
<div align="right">—Nicholas Dickner</div>
|{{notice|Too short}}Less than enough energy to microwave a burrito.
|{{blog|102|2014|06|25}}
|
|
|-
|[[File:Vanishing Water.png|100px]]
|'''{{what if|103|Vanishing Water}}'''
|''"What would happen if all the bodies of water on Earth magically disappeared?"''
<div align="right">—Joanna Xu</div>
|
|{{blog|103|2014|07|02}}
|
|
|-
|[[File:Global Snow.png|100px]]
|'''{{what if|104|Global Snow}}'''
|''"From my seven-year-old son: How many snowflakes would it take to cover the entire world in six feet of snow? (I don't know why six feet...but that's what he asked.)"''
<div align="right">—Jed Scott</div>
|
|{{blog|104|2014|07|09}}
|{{book|2|59}}
|
|-
|[[File:Cannibalism.png|100px]]
|'''{{what if|105|Cannibalism}}'''
|''"How long could the human race survive on only cannibalism?"''
<div align="right">—Quinn Shaffer</div>
|Depends, if you’re the only one trying out this new diet, maybe a week before you get caught. If the entire world brooms in, about 32 months.
|{{blog|105|2014|07|16}}
|
|
|-
|[[File:Ink Molecules.png|100px]]
|'''{{what if|106|Ink Molecules}}'''
|''"Suppose you were to print, in 12 point text, the numeral 1 using a common cheap ink-jet printer. How many molecules of the ink would be used? At what numerical value would the number printed approximately equal the number of ink molecules used?"''
<div align="right">—David Pelkey</div>
|{{notice|Too short}}An 18-digit number.
|{{blog|106|2014|07|23}}
|
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|-
|[[File:Letter to Mom.png|100px]]
|'''{{what if|107|Letter to Mom}}'''
|''"What’s the fastest way to get a hand-written letter from my place in Chicago to my mother in New Jersey?"''
<div align="right">—Tim</div>
|
|{{blog|107|2014|07|30}}
|
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|-
|[[File:Expensive Shoebox.png|100px]]
|'''{{what if|108|Expensive Shoebox}}'''
|''"What would be the most expensive way to fill a size 11 shoebox (e.g. with 64 GB MicroSD cards all full of legally purchased music)?"''
<div align="right">—Rick Lewis</div>
|{{notice|A little too vague.}}There are many options (precious materials, hard drugs, physical file storage, etc.), but they all cap out at ~$2,000,000,000.
|{{blog|108|2014|08|13|7d late}}
|{{book|2|31}}
|
|-
|[[File:Into the Blue.png|100px]]
|'''{{what if|109|Into the Blue}}'''
|''"If I shot an infinitely strong laser beam into the sky at a random point, how much damage would it do?"''
<div align="right">—Garrett D.</div>
|Most of the time it would not hit anything.
|{{blog|109|2014|08|20}}
|
|
|-
|[[File:Walking New York.png|100px]]
|'''{{what if|110|Walking New York}}'''
|''"Could a person walk the entire city of NY in their lifetime? (including inside apartments)"''
<div align="right">—Asif Shamir</div>
|{{notice|Too short}}Yes, in around 30 years, but you'd end up in prison.
|{{blog|110|2014|08|27}}
|
|
|-
|[[File:All the Money.png|100px]]
|'''{{what if|111|All the Money}}'''
|''"People sometimes say "If I had all the money in the world ..." in order to discuss what they would do if they had no financial constraints. I'm curious, though, what would happen if one person had all of the world's money?"''
<div align="right">—Daniel Pino</div>
|The only thing to do would be to make a swimming pool, as it is unlikely anybody else would agree with your claims to all the money and property.
|{{blog|111|2014|09|02|1d early}}
|
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|-
|[[File:Balloon Car.png|100px]]
|'''{{what if|112|Balloon Car}}'''
|''"My 12-year-old daughter is proposing an interesting project. She is planning to attach a number of helium balloons to a chair, which in turn would be tethered by means of a rope to a Ferrari. Her 13-year-old friend would then drive the Ferrari around, while she sits in the chair enjoying uninterrupted views of the countryside. Leaving aside the legal and insurance difficulties, my daughter is keen to know the maximum speed that she could expect to attain, and how many helium balloons would be required."''
<div align="right">—Phil Rodgers, Cambridge, UK</div>
|A balloon just big enough to lift you would be pushed down by the wind, and a balloon big enough to counteract that would lift up the car along with you. The way to achieve this result is [https://www.youtube.com/results?search_query=parasailing parasailing].
|{{blog|112|2014|09|17|8d late}}
|
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|-
|[[File:Visit Every State.png|100px]]
|'''{{what if|113|Visit Every State}}'''
|''"How fast could you visit all 50 states?"''
As discussed by Stephen von Worley on [http://www.datapointed.net/2012/08/fastest-route-to-visit-all-fifty-united-states/ ''Data Pointed'']
|In just over 6 hours, in 5 satellite orbits.
|{{blog|113|2014|09|24}}
|
|
|-
|[[File:Antimatter.png|100px]]
|'''{{what if|114|Antimatter}}'''
|''"What if everything was antimatter, EXCEPT Earth?"''
<div align="right">—Sean Gallagher</div>
|{{notice|Too short}}Our existence would end, but much slower than in most other situations, from outer-space gas and meteorites.
|{{blog|114|2014|10|01}}
|
|
|-
|[[File:Into the Sun.png|100px]]
|'''{{what if|115|Into the Sun}}'''
|''"When I was about 8 years old, shoveling snow on a freezing day in Colorado, I wished that I could be instantly transported to the surface of the Sun, just for a nanosecond, then instantly transported back. I figured this would be long enough to warm me up but not long enough to harm me. What would actually happen?"''
<div align="right">—AJ, Kansas City</div>
|You would not be warmed if you went to the surface. The core, on the other hand, would vaporize you.
|{{blog|115|2014|10|08}}
|{{book|2|61}}
|{{book|15|2024|09|03|UXA-Af-JeCE|Could you survive a nanosecond on the Sun?}}
|-
|[[File:No-Rules NASCAR.png|100px]]
|'''{{what if|116|No-Rules NASCAR}}'''
|''"If you stripped away all the rules of car racing and had a contest which was simply to get a human being around a track 200 times as fast as possible, what strategy would win? Let's say the racer has to survive."''
<div align="right">—Hunter Freyer</div>
|If the rider has to survive, 90 minutes is the limit based on human G-force tolerances. If survival is not a priority, you'd build a particle accelerator.
|{{blog|116|2014|10|15}}
|{{book|2|35}}
|{{book|3|2023|12|19|JcXpCyPc2Xw|What if NASCAR had no rules?}}
|-
|[[File:Distant Death.png|100px]]
|'''{{what if|117|Distant Death}}'''
|''"What is the farthest from Earth that any Earth thing has died?"''
<div align="right">—Amy from NZ</div>
|The farthest that any human has died is about 167 kilometers. In terms of any living thing, however, bacterial spores on Voyager 1 are dying every few months, setting a new record each time.
|{{blog|117|2014|10|23|1d late}}
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|[[File:Physical Salary.png|100px]]
|'''{{what if|118|Physical Salary}}'''
|''"What if people's incomes appeared around them as cash in real time? How much would you need to make to be in real trouble?"''
<div align="right">—Julia Anderson, Albuquerque, NM</div>
|{{notice|This is obvious. Explain both scenarios.}}A normal person would not get buried. A CEO, on the other hand, would be in trouble.
|{{blog|118|2014|10|30}}
|
|
|-
|[[File:Laser Umbrella.png|100px]]
|'''{{what if|119|Laser Umbrella}}'''
|''"Stopping rain from falling on something with an umbrella or a tent is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?"''
<div align="right">—Zach Wheeler</div>
|It would be very complicated, not worth it, and would probably make everything around you catch fire.
|{{blog|119|2014|11|13|7d late}}
|{{book|2|37}}
|{{book|6|2024|02|20|zgBTwtg7H8E|Could you make an umbrella out of lasers?}}
|-
|[[File:Alternate Universe What Ifs.png|100px]]
|'''{{what if|120|Alternate Universe What Ifs}}'''
|''"Dispatches from a horrifying alternate universe"''
|
|{{blog|120|2014|11|20}}
|
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|-
|[[File:Frozen Rivers.png|100px]]
|'''{{what if|121|Frozen Rivers}}'''
|''"What would happen if all of the rivers in the US were instantly frozen in the middle of the summer?"''
<div align="right">—Zoe Cutler</div>
|Anywhere with rain or snowmelt would be horrifically flooded, and ice would break, then dam up rivers, forming huge lakes. Humanity would be worse for the wear, but all in all fine.
|{{blog|121|2014|12|11}} 14d late)
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|[[File:Lava Lamp.png|100px]]
|'''{{what if|122|Lava Lamp}}'''
|''"What if I made a lava lamp out of real lava? What could I use as a clear medium? How close could I stand to watch it?"''
<div align="right">—Kathy Johnstone, 6th Grade Teacher (via a student)</div>
|The container would glow opaque from the heat, making it impossible to see the lava, which would solidify after a minute.
|{{blog|122|2014|12|18}}
|{{book|2|40}}
|
|-
|[[File:Fairy Demographics.png|100px]]
|'''{{what if|123|Fairy Demographics}}'''
|''"How many fairies would fly around, if each fairy is born from the first laugh of a child and fairies were immortal?"''
<div align="right">—Mira Kühn, Germany</div>
|They would have the same birth rate as humans, and they would become a major part of the ecosystem.
|{{blog|123|2015|01|01|7d late}}
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|-
|[[File:Lunar Swimming.png|100px]]
|'''{{what if|124|Lunar Swimming}}'''
|''"What if there was a lake on the Moon? What would it be like to swim in it? Presuming that it is sheltered in a regular atmosphere, in some giant dome or something."''
<div align="right">—Kim Holder</div>
|It would be super-cool, given that lower gravity would increase the size of splashes and the height of jumps.
|{{blog|124|2015|01|08}}
|
|{{book|20|2024|12|24|aIIBBj6KR-Y|What if we put a pool on the moon?}}
|-
|[[File:Bowling Ball 2.png|100px]]
|'''{{what if|125|Bowling Ball}}'''
|''"You are in a boat directly over the Mariana Trench. If you drop a 7kg bowling ball over the side, how long would it take to hit the bottom?"''
<div align="right">—Doug Carter</div>
|Two hours and 20 minutes.
|{{blog|125|2015|01|15}}
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|-
|[[File:Stairs (What If?).png|100px]]
|'''{{what if|126|Stairs}}'''

|''"If you made an elevator that would go to space (like the one you mentioned in the '''{{what if|94|billion-story building}}''') and built a staircase up (assuming regulated air pressure) about how long would it take to climb to the top?"''
<div align="right">—Ethan Annas</div>
A week or two for a professional stair-climber. Half a day by motorcycle.
|{{blog|126|2015|01|22}}
|
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|-
|[[File:Tug of War.png|100px]]
|'''{{what if|127|Tug of War}}'''
|''"Would it be possible for two teams in a tug-o-war to overcome the ultimate tensile strength of an iron rod and pull it apart? How big would the teams have to be?"''
<div align="right">—Markus Andersen</div>
|
|{{blog|127|2015|01|28|1d early}}
|
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|-
|[[File:Zippo Phone.png|100px]]
|'''{{what if|128|Zippo Phone}}'''
|''"What in my pocket actually contains more energy, my Zippo or my smartphone? What would be the best way of getting the energy from one to the other? And since I am already feeling like Bilbo in this one, is there anything else in my pocket that would have unexpected amounts of stored energy?"''
<div align="right">—Ian Cummings</div>
|The Zippo has more energy than your phone battery, but your hand would have even more, when burned as fuel.
|{{blog|128|2015|02|05|1d late}}
|
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|-
|[[File:Black Hole Moon.png|100px]]
|'''{{what if|129|Black Hole Moon}}'''
|''"What would happen if the Moon were replaced with an equivalently-massed black hole? If it's possible, what would a lunar ("holar"?) eclipse look like?"''
<div align="right">—Matt</div>
|It would not have a big impact unless it happened during the space age.
|{{blog|129|2015|02|12}}
|
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|-
|[[File:Snow Removal.png|100px]]
|'''{{what if|130|Snow Removal}}'''
|''"I've long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it. Now I've realized that a flamethrower is impractical, but what about a high-powered microwave emitter?"''
<div align="right">—Matt Van Opens</div>
|
|{{blog|130|2015|02|19}}
|
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|-
|[[File:Microwaves.png|100px]]
|'''{{what if|131|Microwaves}}'''
|''"I have had a particular problem for as long as I can remember. Any time I attempt to heat left over Chinese food in a microwave, it fails to heat completely through somewhere. Usually the center but not always and usually rice, but often it will be a small section of meat. It's baffling and has made me automatically adjust heating times to over 2 minutes. In most cases this tends to heat the bowl or plate more than the food. So I suppose the question is what is the optimal time to heat left over Chinese food in the microwave, how about an 800 watt microwave?"''
<div align="right">—James</div>
|
|{{blog|131|2015|02|27|1d late}}
|
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|[[File:Hotter than Average.png|100px]]
|'''{{what if|132|Hotter than Average}}'''
|''"I saw a sign at a hot springs tub saying "Caution: Water is hotter than average" with water at about 39°C. Although they were presumably trying to say "hotter than the average swimming pool," this got me wondering: What is the average temperature of all water on the Earth’s surface, and how does that temperature compare to 39°C?"''
<div align="right">—Graham Ward</div>
|{{notice|Explain, what's a water average?}}There is a water average. Give the signmakers some credit.
|{{blog|132|2015|03|07|1d late}}
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|-
|[[File:Flagpole.png|100px]]
|'''{{what if|133|Flagpole}}'''
|''"So, you're falling from a height above the tallest building in your town, and you don't have a parachute. But wait! Partway down the side of that skyscraper there's a flagpole sticking out, sans flag! You angle your descent and grab the pole just long enough to swing around so that when you let go you're now heading back up toward the sky. As gravity slows you and brings you to a halt, you reach the top of the skyscraper, where you reach out and pull yourself to safety. What's the likelihood this could happen?"''
<div align="right">—Rex Ungericht</div>
|
|{{blog|133|2015|03|17|3d late}}
|
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|-
|[[File:Space Burial.png|100px]]
|'''{{what if|134|Space Burial}}'''
|''"I've often joked I'd like to have my remains put into orbit. Not in a "scatter my ashes" sense, but, like, "throw my naked corpse out the airlock" sense. Honestly, my main motivation is to baffle someone in the distant future, but it's an interesting scientific question: what would happen to my body in orbit over the course of years, decades or centuries?"''
<div align="right">—Tim in Fremont</div>
|
|{{blog|134|2015|03|28|4d late}}
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|[[File:Digging Downward.png|100px]]
|'''{{what if|135|Digging Downward}}'''
|''"What would happen if I dug straight down, at a speed of 1 foot per second? What would kill me first?"''
<div align="right">—Jack Kaunis</div>
|
|{{blog|135|2015|04|05|1d late}}
|
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|-
|[[File:Spiders vs. the Sun.png|100px]]
|'''{{what if|136|Spiders vs. the Sun}}'''
|''"Which has a greater gravitational pull on me: the Sun, or spiders? Granted, the Sun is much bigger, but it is also much further away, and as I learned in high school physics, the gravitational force is proportional to the square of the distance."''
<div align="right">—Marina Fleming</div>
|The Sun. But spiders are a lot more scary.
|{{blog|136|2015|04|12}}
|{{book|2|44}}
|
|-
|[[File:New Horizons.png|100px]]
|'''{{what if|137|New Horizons}}'''
|''"What if New Horizons hits my car?"''
<div align="right">—Robin Sheat</div>
|
|{{blog|137|2015|07|14|2m 25d late}}
|
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|-
|[[File:Jupiter Submarine.png|100px]]
|'''{{what if|138|Jupiter Submarine}}'''
|''"What if you released a submarine into Jupiter's atmosphere? Would it eventually reach a point where it would float? Could it navigate?"''
<div align="right">—KTH</div>
|
|{{blog|138|2015|07|28|7d late}}
|
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|-
|[[File:Jupiter Descending.png|100px]]
|'''{{what if|139|Jupiter Descending}}'''
|''"If you did '''{{what if|138|fall into Jupiter's atmosphere in a submarine}}''', what would it actually look like? What would you see before you melted or burned up?"''
<div align="right">—Ada Munroe</div>
|{{notice|Too short}}You would see... brown.
|{{blog|139|2015|08|04}}
|
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|-
|[[File:Proton Earth, Electron Moon.png|100px]]
|'''{{what if|140|Proton Earth, Electron Moon}}'''
|''"What if the Earth were made entirely of protons, and the Moon were made entirely of electrons?"''
<div align="right">—Noah Williams</div>
|
|{{blog|140|2015|09|18|1m 7d late}}
|{{book|2|48}}
|
|-
|[[File:Sunbeam.png|100px]]
|'''{{what if|141|Sunbeam}}'''
|''"What if all of the sun's output of visible light were bundled up into a laser-like beam that had a diameter of around 1m once it reaches Earth?"''
<div align="right">—Max Schäfer</div>
|
|{{blog|141|2016|01|12|3m 18d late}}
|
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|-
|[[File:Space Jetta.png|100px]]
|'''{{what if|142|Space Jetta}}'''
|''"What if I tried to re-enter the atmosphere in my car? (a 2000 VW Jetta TDI). Would it do more environmental damage than it is already apparently doing?"''
<div align="right">—Casey Berg</div>
|{{notice|Why?}}Actually, it would be more clean than it is currently!
|{{blog|142|2016|01|20|1d late}}
|
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|[[File:Europa Water Siphon.png|100px]]
|'''{{what if|143|Europa Water Siphon}}'''
|''"What if you built a siphon from the oceans on Europa to Earth? Would it flow once it's set up? (We have an idea for selling bottled Europa water.)"''
<div align="right">—A group of Google Search SREs</div>
|{{notice|Too short}}No, at least not with a siphon.
|{{blog|143|2016|01|26|1d early}}
|
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|[[File:Saliva Pool.png|100px]]
|'''{{what if|144|Saliva Pool}}'''
|''"How long would it take for a single person to fill up an entire swimming pool with their own saliva?"''
<div align="right">—Mary Griffin, 9th grade</div>
|{{notice|Too short. Why? How?}}It would take them 8345 years.
|{{blog|144|2016|02|02}}
|{{book|2|53}}
|
|-
|[[File:Fire From Moonlight.png|100px]]
|'''{{what if|145|Fire From Moonlight}}'''
|''"Can you use a magnifying glass and moonlight to light a fire?"''
<div align="right">—Rogier Spoor</div>
|
|{{blog|145|2016|02|09}}
|{{book|2|51}}
|
|-
|[[File:Stop Jupiter.png|100px]]
|'''{{what if|146|Stop Jupiter}}'''
|''"I understand that the ''New Horizons'' craft used gravity assist from Jupiter to increase its speed on the way to Pluto. I also understand that by doing this, Jupiter slowed down very slightly. How many flyby runs would it take to stop Jupiter completely?"''
<div align="right">—Dillon</div>
|{{notice|Why?}}This can never happen, even if we were to throw Earth at Jupiter.
|{{blog|146|2016|02|16}}
|
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|-
|[[File:Niagara Straw.png|100px]]
|'''{{what if|147|Niagara Straw}}'''
|''"What would happen if one tried to funnel Niagara Falls through a straw?"''
<div align="right">—David Gwizdala</div>
|{{notice|Too short, last part.}}The International Niagara Committee, the International Niagara Board of Control, the International Joint Commission, the International Niagara Board Working Committee, and probably the Great Lakes–St. Lawrence River Adaptive Management Committee would get angry. The Earth would also be destroyed.
|{{blog|147|2016|02|26}} 3d late)
|{{book|2|55}}
|
|-
|[[File:Eat the Sun.png|100px]]
|'''{{what if|148|Eat the Sun}}'''
|''"What percentage of the Sun's heat (per day) does the population of Earth eat in calories per year? What changes could be made to our diets for the amount of calories to equal the energy of the Sun?"''
<div align="right">—James Mitchell</div>
|
|{{blog|148|2016|03|12|8d late}}
|
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|[[File:Pizza Bird.png|100px]]
|'''{{what if|149|Pizza Bird}}'''
|''"My boyfriend recently took a flight on a plane with wifi, and while he was up there, wistfully asked if I could send him a pizza. I jokingly sent him a photo of a parrot holding a pizza slice in its beak. Obviously, my boyfriend had to go without pizza until he landed at JFK. But this raised the question: could a bird deliver a standard 20" New York-style cheese pizza in a box? And if so, what kind of bird would it take?"''
<div align="right">—Tina Nguyen</div>
|
|{{blog|149|2016|03|26|7d late}}
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|[[File:Tatooine Rainbow.png|100px]]
|'''{{what if|150|Tatooine Rainbow}}'''
|''"Since rainbows are caused by the refraction of the sunlight by tiny droplets of rainwater, what would rainbow look like on Earth if we had two suns like Tatooine?"''
<div align="right">—Raga</div>
|
|{{blog|150|2016|05|23|1m 21d late}}
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|[[File:Sun Bug.png|100px]]
|'''{{what if|151|Sun Bug}}'''
|''"How many fireflies would it take to match the brightness of the Sun?"''
<div align="right">—Luke Doty</div>
|
|{{blog|151|2016|07|21|1m 23d late}}
|
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|[[File:Flood Death Valley.png|100px]]
|'''{{what if|152|Flood Death Valley}}'''
|''"Since Death Valley is below sea level could we dig a hole to the ocean and fill it up with water?"''
<div align="right">—Nick Traeden</div>
|
|{{blog|152|2016|10|18|2m 21d late}}
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|''The thumbnail for this blog article wasn't archived.''
|'''<span class="plainlinks">[https://web.archive.org/web/20161205191559/http://what-if.xkcd.com/153 Peptides]</span>'''
|''"What is the longest English word you can spell using the one letter abbreviations of the 20 genetic amino acids? What about the three letter abbreviations? What would the resultant peptides look like?"''
<div align="right">—Kira (Lysine-Isoleucine-Arginine-Alanine) Guth</div>
|
|{{blog|153|2016|12|05|notAvailable=Published by accident and deleted: [[what if? (blog)#top|learn more]]}}
|
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|-
|[[File:Hide the Atmosphere.png|100px]]
|'''{{what if|153|Hide the Atmosphere}}'''
|''"Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?"''
<div align="right">—Sam Burke</div>
|The hole would need to be very big. Under the right circumstances, a five-mile hole over the entire state of Texas might suffice.
|{{blog|153|2017|01|30|3m 5d late}}
|
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|[[File:Coast-to-Coast Coasting.png|100px]]
|'''{{what if|154|Coast-to-Coast Coasting}}'''
|''"What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?"''
<div align="right">—Brandon Rooks</div>
|The ramp would need to be five miles high (eight kilometres) to make this possible, and that would be at a speed slower than walking. You would also need oxygen for the first third of the way down.
|{{blog|154|2017|02|08|9d late}}
|
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|[[File:Toaster vs. Freezer.png|100px]]
|'''{{what if|155|Toaster vs. Freezer}}'''
|''"Would a toaster still work in a freezer?"''
<div align="right">—[https://maximumfun.org/podcasts/my-brother-my-brother-and-me/ My Brother, My Brother, and Me], [https://maximumfun.org/episodes/my-brother-my-brother-and-me/mbmbam-343-sauce-doctors-blessing/ Episode 343], discussing a Yahoo Answers question</div>
|
|{{blog|155|2017|02|28|13d late}}
|
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|[[File:Electrofishing for Whales.png|100px]]
|'''{{what if|156|Electrofishing for Whales}}'''
|''"I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't imagine this relationship would be maintained for very large animals. Could you electrofish for a blue whale? At what voltage would you have have to set the e-fisher?"''
<div align="right">—Madeline Cooper</div>
|Electrofishing has long-term effects on fish and especially dolphins. Larger animals, especially mammals, are likely to die rather than just get stunned. But it is also harder to get any effect in saltwater, which explains why electrofishing is mainly done in rivers and lakes, compared to fresh water. This means it wouldn't work on blue whales.
|{{blog|156|2017|03|09|2d late}}
|
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|-
|[[File:Earth-Moon Fire Pole.png|100px]]
|'''{{what if|157|Earth-Moon Fire Pole}}'''
|''"My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?"''
<div align="right">—Ramon Schönborn, Germany</div>
|This set-up would face many challenges, but these would be the different domains of the slowest extreme sport: climbing out of the Moon's gravity, accelerating through the middle transfer phase, and then decelerating to your supersonic arrival on Earth.
|{{blog|157|2018|03|21|1y 2m 5d late}}
|{{book|2|58}}
|
|-
|[[File:Hot Banana.png|100px]]
|'''{{what if|158|Hot Banana}}'''
|''"I heard that bananas are radioactive. If they are radioactive, then they radiate energy. How many bananas would you need to power a house?"''
<div align="right">—Kang Ji</div>
|Bananas are not very radioactive, so it would take an absurdly large number. However, gathering that many bananas in one place would have negative consequences. New York no longer exists.
|{{blog|158|2022|05|04|3y 11m 7d late}}
|
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|-
|[[File:Hailstones.png|100px]]
|'''{{what if|159|Hailstones}}'''
|''"My 4 year old son and I were wondering about soccer ball sized hail today. How much damage would a hail storm with size 5 soccer ball sized hail do?"''
<div align="right">—Michael Grill</div>
|There's no real chance of producing that big hail stones, but if they could be lethal even if staying indoors.
|{{blog|159|2022|07|05|1m 30d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|160|Transatlantic Car Rental}}'''
|''"My daughter recently received her driver's permit in the US, and aspires to visit mainland Europe someday. She has learned enough about the rules of the road to know never to drive into the ocean; however, she jokingly suggested that given a sufficient quantity of rental cars, she could eventually get to Europe by driving east repeatedly. The question is, how many vehicles would it take to build a car-bridge across the Atlantic?"''
<div align="right">—Eric Munson</div>
|
|{{blog|160|2022|09|06|1m 26d late}}
|
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|161|Star Ownership}}'''
|''"If every country's airspace extended up forever, which country would own the largest percentage of the galaxy at any given time?"''
<div align="right">—Reuven Lazarus</div>
|{{notice|Too short}}Australia owns most of the galaxy at certain points in time.
|{{blog|161|2022|11|01|1m 19d late}}
|{{book|2|24}}
|
|-
|''This blog article doesn't have a thumbnail.''
|'''{{what if|162|Comet Ice}}'''
|''"Could I cool down the Earth by capturing a comet and dropping it in the ocean, like an ice cube in a glass of water?"''
<div align="right">—Daniel Becker</div>
|{{notice|Too short}}The comet either burns up in the atmosphere or speeds up global warming.
|{{blog|162|2022|12|06|29d late}}
|
|
|-
|
|'''Global Windstorm'''
|''"What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"''
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|1}}
|{{book|4|2024|01|09|gp5G1QG6cXc|What if Earth suddenly stopped spinning?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #1'''
|
|
|
|{{book|1|4}}
|
|-
|
|'''New York–Style Time Machine'''
|''"I assume when you travel back in time you end up at the same spot on the Earth’s surface. At least, that’s how it worked in the Back to the Future movies. If so, what would it be like if you traveled back in time, starting in Times Square, New York, 1000 years? 10,000 years? 100,000 years? 1,000,000 years? 1,000,000,000 years? What about foward in time 1,000,000 years?"''
<div align="right">—Mark Dettling</div>
|
|
|{{book|1|5}}
|
|-
|
|'''Periodic Wall of the Elements'''
|
<div align="right">—Andrew Brown</div>
|
|
|{{book|1|8}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #2'''
|
|
|
|{{book|1|12}}
|
|-
|
|'''The Last Human Light'''
|
|
|
|{{book|1|13}}
|{{book|11|2024|05|28|8fADp43wJwU|If all humans died, when would the last light go out?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #3'''
|
|
|
|{{book|1|16}}
|
|-
|
|'''Orbital Submarine'''
|
|
|
|{{book|1|17}}
|{{book|7|2024|03|05|EsUBRd1O2dU|Would a Submarine Work as a Spaceship?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #4'''
|
|
|
|{{book|1|20}}
|
|-
|
|'''Human Computer'''
|
|
|
|{{book|1|21}}
|
|-
|
|'''Common Cold'''
|
|
|
|{{book|1|25}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #5'''
|
|
|
|{{book|1|27}}
|
|-
|
|'''No More DNA'''
|
|
|
|{{book|1|29}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #6'''
|
|
|
|{{book|1|31}}
|
|-
|
|'''Flyover States'''
|
|
|
|{{book|1|33}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #7'''
|
|
|
|{{book|1|36}}
|
|-
|
|'''Self-Fertilization'''
|
|
|
|{{book|1|37}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #8'''
|
|
|
|{{book|1|40}}
|
|-
|
|'''Lost Immortals'''
|
|
|
|{{book|1|42}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #9'''
|
|
|
|{{book|1|46}}
|
|-
|
|'''Sparta'''
|
|
|
|{{book|1|47}}
|
|-
|
|'''Lego Bridge'''
|
|
|
|{{book|1|51}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #10'''
|
|
|
|{{book|1|54}}
|
|-
|
|'''Weightless Arrow'''
|
|
|
|{{book|1|56}}
|
|-
|
|'''All the Lightning'''
|
|
|
|{{book|1|62}}
|{{book|10|2024|05|07|fs28lEq9smw|What if all the lightning on Earth struck the same place at once?}}
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #11'''
|
|
|
|{{book|1|64}}
|
|-
|
|'''Neutron Bullet'''
|
|
|
|{{book|1|67}}
|
|-
|
|'''Weird (and Worrying) Questions from the What If? Inbox, #12'''
|
|
|
|{{book|1|68}}
|
|-
|
|'''Richter 15'''
|
|
|
|{{book|1|69}}
|{{book|2|2023|12|05|e3uk7jU3RHo|What would a magnitude 15 earthquake be like?}}
|-
|
|'''Soupiter'''
|''"What would happen if the Solar System was filled with soup out to Jupiter?"''
<div align="right">—Amelia</div>
|The soup would collapse into a black hole and devour the Milky Way, though we would feel mostly fine for the first 10 to 15 minutes.
|
|{{book|2|1}}
|
|-
|
|'''Helicopter Ride'''
|''"What if you were hanging on a helicopter blade by your hands and then someone turned it on?"''
<div align="right">—Corban Blanset</div>
|Without any grip assistance, you'd fall off before it completed its first revolution. With handholds, your body would instead fall off of your arms.
|
|{{book|2|2}}
|
|-
|
|'''Dangerously Cold'''
|''"Would there be any danger from standing next to a large object that was 0 Kelvin?"''
<div align="right">—Christopher</div>
|There wouldn't be a lot of direct danger from the cube itself, though it would make you feel cold. The bigger danger would be from liquid oxygen condensing and igniting flammable objects. It would take a while to reheat the cube
|
|{{book|2|3}}
|
|-
|
|'''Ironic Vaporization'''
|''"What if we somehow evaporated a solid block of iron on {{asic|ear|th''}}''?"''
<div align="right">—Cooper C.</div>
|The cube would ignite whatever is near it and deposit large quantities of iron flakes downwind. However, it wouldn't make a huge impact on the total amount of atmospheric iron.
|
|{{book|2|4}}
|
|-
|
|'''Cosmic Road Trip'''
|''"If the universe stopped expanding right now, how long would it take for a human to drive a car all the way to the edge of the universe?"''
<div align="right">—Sam H-H</div>
|
|
|{{book|2|5}}
|
|-
|
|'''Pigeon Chair'''
|''"How many pigeons would it require in order to lift the average person and launch a chair to the height of Australia's Q1 skyscraper?"''
<div align="right">—Nick Evans</div>
|
|
|{{book|2|6}}
|
|-
|rowspan="11"|
|rowspan="11"|'''Short Answers #1'''
|''"What if your blood became liquid uranium? Would you die from radiation, lack of oxygen, or something else?"''
<div align="right">—Thomas Chattaway</div>
|You would die of Jeff's Disease.
|rowspan="11"|
|rowspan="11"{{book|2|6.5}} (S1)
|rowspan="11"|
|-
|''"Could someone have an anime-style attack where they created a sword out of air? I'm not talking about an air blade, but something like cooling the air enough so that you had solid air to attack people."''
<div align="right">—Emma</div>
|Theoretically yes, but it would be extremely impractical.
|-
|''"How much water do you have to drink to become 99 percent water?"''
<div align="right">—LyraxH</div>
|About 500 gallons of water.
|-
|''"What would we see if we attached a lightweight camera to a balloon and let it fly away?"''
<div align="right">—Raymond Peng</div>
|We should have attached a transmitter as well.
|-
|''"How many calories does Mario burn a day?"''
<div align="right">—Daniel and Xavier Hovley</div>
|Mario starved to death in late 1985.
|-
|''"If a snake unhinged its jaw and swallowed a balloon whole, could/would the balloon carry the snake up?"''
<div align="right">—Freezachu</div>
|No.
|-
|''"If you were to jump out of an airplane that was traveling at Mach 880980 that was 100,00 feet above ground in New York City, with skydiving gear, could you survive?"''
<div align="right">—Jack Catten</div>
|rowspan="2"|No, you would die.
|-
|''"If there was no water on Earth, would we all live?"''
<div align="right">—Karen</div>
|-
|''"Is it possible to make a homemade jetpack?"''
<div align="right">—Azhari Zadil</div>
|It's very easy to make one that works once; much harder to make it work more.
|-
|''"I was wondering whether there's a way to use my welder as a defibrillator? (The specific model I own is an Impax IM-ARC140 arc welder.)"''
<div align="right">—Łukasz Grabowski</div>
|No, and you probably shouldn't be allowed to use it as an arc welder either.
|-
|''"What if all atoms on Earth were expanded to the size of a grape? Would we survive?
|I don't know how to answer this with science, but now I want grapes.
|-
|
|'''Geyser'''
|''"If one were to stand on top of the Old Faithful geyser in Yellowstone National Park, at what speed would they be launched upwards and what injuries would they likely sustain?"''
<div align="right">—Catherine McGrath</div>
|
|
|{{book|2|8}}
|
|-
|
|'''Pew, Pew, Pew'''
|''"If you shot a ridiculously powerful gun/{{asic|la|zer''}}'' would it go off the edge of the world in a straight line or curve around the world?"''
<div align="right">—Maelor</div>
|The beam would go off the edge of the world, except under certain circumstances.
|
|{{book|2|9}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #1'''
|colspan="2"|''"Can bees or other animals go to hell? Or can they murder other bees without consequences?"''
<div align="right">—Sadie Kim</div>
|rowspan="4"|
|rowspan="4"{{book|2|10.5}} (W1)
|rowspan="4"|
|-
|colspan="2"|''"How many mirrors reflecting (sun)light would it take to kill, or at least, injure somebody?"''
<div align="right">—Eli Collinge</div>
|-
|colspan="2"|''"If you had to remove the tonsils of a giant, what would be the safest way for you to do it? The surgeon is a normal human."''
<div align="right">—Tirzah</div>
|-
|colspan="2"|''"What would it take to defeat Air Force One with a drone???"''
<div align="right">—Anonymous</div>
|-
|
|'''Banana Church'''
|''"Can all the world's bananas fit inside of all of the world's churches? My friends have had this argument for a little over 10 years now."''
<div align="right">—Jonas</div>
|Yes. They would likely only fill the churches to 6 inches deep.
|
|{{book|2|11}}
|
|-
|
|'''Lose Weight the Slow and Incredibly Difficult Way'''
|''"I want to lose 20 pounds. How much of the Earth's mass would I have to "relocate" to space in order to achieve my goal?"''
<div align="right">—Ryan Murphy</div>
|You would have to remove 85% of the Earth's mass.
|
|{{book|2|13}}
|
|-
|
|'''Jupiter Comes to Town'''
|''"Dear Randall, what would happen if you shrunk Jupiter down to the size of a house and placed in a neighborhood, say, replacing a house?"''
<div align="right">—Zachary</div>
|
|
|{{book|2|15}}
|
|-
|
|'''Swing Set'''
|''"How tall can a swing set be while still being powered by a human pumping their legs? Is it possible to build a swing set tall enough to launch the rider into space if they jump at the right time? (Assuming the human has enough energy, which my 5-year-old seems to have.)"''
<div align="right">—Joe Coyle</div>
|This wouldn't happen.
|
|{{book|2|17}}
|
|-
|
|'''Airliner Catapult'''
|''"My friend is a commercial airline pilot. She says that a significant amount of fuel is spent on takeoff. To save fuel, why couldn't we launch airplanes using catapult systems like on aircraft carriers (calibrated to normal human accelerations)? Could significant amounts of fossil fuels be saved if the catapults could be run by some other clean energy? I'm imagining a rope ... one end tied to the airplane, the other tied to a large boulder at the edge of a cliff. Just push the boulder off the cliff!"''
<div align="right">—Brady Barkey</div>
|
|
|{{book|2|18}}
|
|-
|rowspan="14"|
|rowspan="14"|'''Short Answers #2'''
|''"Billy the Clown is running out of cash, so in order to raise money, he devises his newest trick: He will inflate, by mouth, a standard-size party balloon until the material (some form of indestructible rubber) is just one atom thick. How large would the inflated party balloon be?"''
<div align="right">—Alan Fong</div>
|It's a total mystery why Billy is running out of cash.
|rowspan="14"|
|rowspan="14"{{book|2|18.5}} (S2)
|rowspan="14"|
|-
|''"How many leaf blowers would it take to move a standard SUV"''
<div align="right">—Ashley H.</div>
|One or two dozen heavy-duty leaf blowers on level ground; more if you don't want to be honked at.
|-
|''"If you put a vacuum at extremely high suction and aimed it at a normal BMW sedan, what would happen?"''
<div align="right">—Anonymous</div>
|Nothing.
|-
|''"On a warm summer evening, when you sit outside with a light on, you can be sure that bugs will be attracted to the light. Then why is it that these same bugs don't fly toward the biggest and strongest lamp of them all, namely the Sun, during the day?"''
<div align="right">—Anonymous</div>
|Those that would would die and not be able to produce offspring with the same traits.
|-
|''"If you collected all of the guns in the world and put them on one side of the Earth, then shot the all simultaneously, would it move the Earth?"''
<div align="right">—Nathan</div>
|It would not move the Earth, but it would make the other side a nicer place to live.
|-
|''"What would happen if you microwaved a small microwave, while the smaller one was on as well?"''
<div align="right">—Micheal</div>
|You would no longer be welcome in that IKEA.
|-
|''"If you're jumping on a trampoline, how fast would your body have to be going to:<br>'''A.''' Break all bones on impact<br>'''B.''' Make your body go though the tiny holes of the mesh."''
<div align="right">—Micah Lane</div>
|<ol style="list-style-type: upper-alpha">
<li>Breaking all of the bones in your body would be hard because a lot of them are very small, but it would be fast enough that the trampoline wouldn't make much of a difference.</li>
<li>This can't happen, no matter how fast you're going.</li>
</ol>
|-
|''"I have a Nothing Grenade™. When detonated, it instantly replaces itself with a sphere of perfect vacuum 2 meters across. What would actually happen when it went off?"''
<div align="right">—Dave H.</div>
|You would have a device functionally similar to a regular grenade.
|-
|''"Is space hot or cold?"''
<div align="right">—Isaac</div>
|Space is the hottest place you can freeze to death in.
|-
|''"How many bones can you remove from the human body while allowing the human to continue living? Asking for a friend."''
<div align="right">—Chris Rakeman</div>
|That person is not your friend.
|-
|''"What would happen if you put a human under a g-force of 417 Gs for twenty seconds?"''
<div align="right">—Nythill</div>
|You would be arrested for murder.
|-
|''"Where or how can one commit a murder and not be prosecuted for it?"''
<div align="right">—Kunai Dhawan</div>
|
|-
|''"I read today that insects make at least $57 billion a year for the US economy. If we were to pay every single insect in the United States equally for their economic contribution, how much would each insect get?"''
<div align="right">—Hannah McDonald</div>
|Each insect would get $0.0000029.
Broken down:
*$18 billion to flies, including mosquitoes
*$16 billion to bees, wasps, and ants
*$10 billion to beetles
*$7 billion to thrips
*$1 billion to butterflies and moths
*$1 billion to true bugs
*$4 billion to all other insects
|-
|''"What, in today's world and yesterday's world, does it mean to be human, in all social and biological factors?"''
<div align="right">—Seth Carrol</div>
|You meant to submit this to ''Why If?: Deeply Ungrammatical Answers to Unanswerable Philosophical Questions''.
|-
|
|'''Slow Dinosaur Apocalypse'''
|''"What if an object like the Chicxulub impactor hit earth with a relatively low relative speed of (let's say) 3 mph"''
<div align="right">—Beni von Alemann</div>
|
|
|{{book|2|19}}
|
|-
|
|'''Elemental Worlds'''
|''"What if Mercury (the planet) were entirely made of mercury (the element)? What if Ceres was made of cerium? Uranus made of uranium? Neptune made of neptunium? What about Pluto made of plutonium?"''
<div align="right">—Anonymous</div>
|
|
|{{book|2|20}}
| 
|-
|
|'''Tire Rubber'''
|''"Rubber tires on millions of cars and trucks start with about ½" tread and end up bald. Rubber should be everywhere, or at least our highways should be made thicker. Where's the rubber?"''
<div align="right">—Fred</div>
|
|
|{{book|2|25}}
|
|-
|rowspan="10"|
|rowspan="10"|'''Short Answers #3'''
|''"How long do you think two people would have to kiss continuously before they had no lips left?"''
<div align="right">—Asli</div>
|That's not how lips work
|rowspan="10"|
|rowspan="10"{{book|2|26.5}} (S3)
|rowspan="10"|
|-
|''"My college friend and I have had this debate for years now: If you put a million hungry ants in a glass cube with one human, who's more likely to walk out alive?"''
<div align="right">—Eric Bowman</div>
|Both the human and the ants would go after the person who put them in the glass box.
|-
|''"What if all of humanity set all of their differences aside and work together to level out the Earth into a perfect sphere?"''
<div align="right">—Erik Andersen</div>
|This would quickly create new differences.
|-
|''"People talk a lot about a space elevator or a building that would reach into low orbit to save time and resources getting things into space. This is going to sound incredibly stupid, but why has no one proposed building a road into space? Since orbit is generally considered to be 62 miles out, would it be possible to build a 62-mile-high mountain somewhere in the United States? Colorado would be my suggestion, since it has a low population density and is about a mile above sea level already."''
<div align="right">—Brian</div>
|Where are you going to get the materials to build the mountain?
|-
|''"If I shot a rocket and a bullet through Jupiter's center, would they come out the other side?"''
<div align="right">—James Wilson</div>
|No. Jupiter is bulletproof.
|-
|''"What if Mount Everest magically turned into pure lava? What would happen to life; would we all die?"''
<div align="right">—Ian</div>
|We would mostly be okay.
|-
|''"Can you fall down into the Mariana Trench, or would you just swim over it?"''
<div align="right">—Rodolfo Estrella</div>
|You can do both of those things
|-
|''"I play Dungeons & Dragons, and my DM doesn't want to let us use the Gust of Wind spell to push wind into the sails of a ship and make it move. Her argument is that you can't use this spell to move a ship because someone on a sailboat can't aim a fan at the sail to propel the boat. We argue that since the spell doesn't push you backward when you use it, then we should be able to use it to make the ship sail. She says she'll allow it only if you say so."''
<div align="right">—Georgia Paterson and Allison Adams</div>
|Since the spell doesn't push you backwards, it should work. If the spell pushed you backwards, you would just have to aim the spell backwards.
|-
|''"What if I struck a match on Titan? Would it light if there's no oxygen?"''
<div align="right">—Ethan Fitzgibbon</div>
|It would spark and then fizzle out.
|-
|''"I posted a question on social media asking what would be the smallest change that would create the biggest disaster. One of the responses I got said "if every atom gained 1 proton." So my question for you is, what would happen if every atom gained 1 proton?"''
<div align="right">—Olivia Caputo</div>
|That would not be a small change.
|-
|
|'''Suction Aquarium'''
|''"When I was a child, I discovered that if I took a container into the swimming pool, i could fill it with water and then bring the container (open-end down) to the surface of the water, and the water level in my container was higher than the water level in the pool. What would happen if you tried to do this with a giant container and the ocean? Could you create a giant aquarium on top of the water that the animals could swim in and out of freely? Maybe an irregularly shaped container that you would walk around on to get closer to the fish?"''
<div align="right">—Caroline Collett</div>
|
|
|{{book|2|27}}
|
|-
|
|'''Earth Eye'''
|''"If the Earth were a massive eye, how far would it see?"''
<div align="right">—Alasdir</div>
|
|
|{{book|2|28}}
|
|-
|
|'''Build Rome in a Day'''
|''"How many people would it take to build Rome in a day?"''
<div align="right">—Lauren</div>
| It would take anywhere between 15 minutes and 150 minutes with the whole Earth working.
|
|{{book|2|29}}
|
|-
|
|'''Mariana Trench Tube'''
|''"If I put an indestructible 20-meter-wide glass tube in the ocean that goes all the way down to the deepest part of the ocean, what would it be like to stand at the bottom? Assuming the sun goes directly overhead."''
<div align="right">—Zoki Čulo</div>
|
|
|{{book|2|30}}
|
|-
|
|'''MRI Compass'''
|''"Why don't compasses point toward the nearest hospital because of the magnetic fields created by MRI machines?"''
<div align="right">—D. Hughes</div>
|They actually do, but only within ~10 meters.
|
|{{book|2|32}}
|
|-
|
|'''Ancestor Fraction'''
|''"I noticed recently that the number of people within a family tree increases exponentially with each generation: I have 2 parents, 4 grandparents, 8 great-grandparents, and so on. Which got me thinking—are most people descended from the majority of Homo sapiens who have ever lived? If not, what fraction of all the people that have ever lived am I descended from?"''
<div align="right">—Seamus</div>
|Likely between 2-3 twenty-fourths of all humans who have ever lived.
|
|{{book|2|33}}
|
|-
|
|'''Bird Car'''
|''"I'm a lowly college student stuck in a car without AC. As such, the windows are down most of the time when I'm driving, and I started thinking: If a bird happens to match my speed and direction perfectly, and I swerve to catch the bird in my car ... what happens next, other than an angry bird? Does the bird stay right where it was? Fly into the windshield? Drop into the seat? My roommate and I disagree. Any help settling this would really make all our lives easier."''
<div align="right">—Hunter W.</div>
| The bird would fall onto the seat at an angle, and then would fly out of the window (hopefully).
|
|{{book|2|34}}
|
|-
|rowspan="4"|
|rowspan="4"|'''Weird & Worrying #2'''
|colspan="2"|''"What would happen if you put the end of a vacuum hose up to your eye and turned on the vacuum?"''
<div align="right">—Kitty Greer</div>
|rowspan="4"|
|rowspan="4"{{book|2|35.5}} (W2)
|rowspan="4"|
|-
|colspan="2"|''"Is it possible to hold your arm straight out of a car window and punch a mailbox clean off its pole? Could you do it without breaking your hand?"''
<div align="right">—Ty Gwennap</div>
|-
|colspan="2"|''"If people's teeth kept growing, but when they were fully grown they come off and are swallowed, how long would it take before it causes any problems?"''
<div align="right">—Valen M.</div>
|-
|colspan="2"|''"In a defensive situation, how much epinephrine (in a EpiPen) would it take to subdue a possible attacker?"''
<div align="right">—Henry M.</div>
|-
|
|'''Vacuum Tube Smartphone'''
|''"What if my phone was based on vacuum tubes? How big would it be?"''
<div align="right">—Johnny</div>
| The phone would be about the size of one to five city blocks, and would melt its way through the Earth's crust. Conversely, the UNIVAC constructed with modern electrical components would be smaller than a grain of salt.
|
|{{book|2|36}}
|
|-
|
|'''Eat a Cloud'''
|''"Could a person eat a whole cloud?"''
<div align="right">—Tak</div>
|Not unless you can squeeze the air out first. If you don't you will burp out more cloud than you ate.
|
|{{book|2|38}}
|
|-
|
|'''Tall Sunsets'''
|''"Let's say that two people of different heights (159 cm and 206 cm) stand beside each other while looking at the sunset. How much longer will the taller person be able to see the sun than the shorter one?"''
<div align="right">—Rasmus Bunde Nielson</div>
|Over a second longer.
|
|{{book|2|39}}
|
|-
|
|'''Sisyphean Refrigerators'''
|''"Suppose everyone with a fridge or a freezer opened them at the same time, outdoors. Would that amount of cooling be able to noticeably change the temperature? If not, how many fridges would it take to lower the temperature, say, 5 degrees F? What about even lower?"''
<div align="right">—Nicholas Mittica</div>
|Refrigerators don't work like that, and would likely increase global temperatures by 0.3 degrees celsius. The infinite spite of Hades is surprisingly green.
|
|{{book|2|41}}
|
|-
|
|'''Basketball Earth'''
|''"You know how when you spin a basketball on your finger you hit the side to make it go faster and balance it? If a meteor passes close enough to the earth, can it make the Earth spin faster like your hand does the basketball?"''
<div align="right">—Zayne Freshley</div>
|Yes.
|
|{{book|2|43}}
|
|- 
|
|'''Inhale a Person'''
|''"If house dust comprises up to 80 percent dead skin, how many people worth of skin does a person consume/inhale in a lifetime?"''
<div align="right">—Greg</div>
|You could inhale at most 3 gallons of human skin in a lifetime, and dust is not mostly dead skin. Instead it is a cursed salad of soil, pollen, cotton fibers, crumbs, powdered sugar, glitter, pet hair and dander, plastic, soot, human or animal hair, flour, glass, smoke, mites, and various miscellaneous gunk.
|
|{{book|2|45}}
|
|-
|
|'''Candy Crush Lightning'''
|''"How many Wint-O-Green Life Savers would it take to create a life-size lightning bolt if you crushed them"''
<div align="right">—Violet M.</div>
|Billions
|
|{{book|2|46}}
|
|-
|rowspan="13"|
|rowspan="13"|'''Short Answers #4'''
|''"Can humans safely eat rabid creatures?"''
<div align="right">—Winston</div>
|No.
|rowspan="13"|
|rowspan="13"{{book|2|46.5}} (S4)
|rowspan="13"|
|-
|''"What if the Earth's core suddenly stopped producing heat?"''
<div align="right">—Laura</div>
|We would be mostly fine.
|-
|''"Could humanity, with our current technology, destroy the Moon?"''
<div align="right">—Tyler</div>
|No.
|-
|''"Can global warming cause the Earth's magnetic fields to weaken?"''
<div align="right">—Pavaki</div>
|No.
|-
|''"If you used a laser, would you be able to bake something?"''
<div align="right">—Andrew Liu</div>
|Yes.
|-
|''"What if Earth was sliced in half, like an apple? Where should you be such that you have the best chance of survival?"''
<div align="right">—Anonymous</div>
|You should be holding the object that's slicing the Earth.
|-
|''"What would happen if a person dropped into a pool full of jellyfish?"''
<div align="right">—Lorenzo Belotti</div>
|It depends on the species.
|-
|''"Would it be possible to make a house floor into a massive air hockey table, so you could move heavy furniture across the room?"''
<div align="right">—Jacob Wood</div>
|Yes, and now I know what my next home improvement project will be.
|-
|''"My 7-year-old son asked us over dinner recently at which point potatoes melt (I assume in a vacuum). Please advise."''
<div align="right">—Steffen</div>
|Potatoes don't really melt at any temperature.
|-
|''"Would a pigeon be able to make it to space if it was not affected by gravity?"''
<div align="right">—Nick Evans</div>
|No. The air in the upper atmosphere is too thin to breathe and too cold
|-
|''"If you were flying blind through the Milky Way what would be the odds of hitting a star or planet?"''
<div align="right">—David</div>
|If you flew edge-on, it would be about 1 in 10 billion.
|-
|''"On various bodies in our Solar System (feel free to group any that are equivalent), roughly how long could you survive on the surface (for gas giants, assume you are on a magical platform at some point in the atmosphere that you could reasonably treat as the surface) with nothing but an infinite air supply and warm winter clothing? That is, no helmet, no pressure suit, just a nose-and-mouth air mask attached to a magic air generator, and clothing that would be suitable for, say, Chicago in winter. (No cute tricks like using the magic air supply to generate heat or whatever.)"''
<div align="right">—Melissa Trible</div>
|
*Earth: 100-ish years
*Venus: Weeks to months
*Everywhere else: Minutes to hours
Venus would be great if it weren't for the sulfuric acid.
|-
|''"What would happen if someone dropped an anvil on you from space?"''
<div align="right">—Sam Stiehl</div>
|About the same as if someone dropped an anvil on you from a building.
|-
|
|'''Toasty Warm'''
|''"What if I want to heat my house using toasters. How many do I need?"''
<div align="right">—Peter Ahlström</div>
|Not many, because the house would quickly catch on fire.
|
|{{book|2|47}}
|
|-
|
|'''Eyeball'''
|''"If I pulled out my eyeball and aimed it so that it was looking into my other eyeball, what would I see (assuming the nerves and veins remain undamaged)"''
<div align="right">—Lenka</div>
|You would see an eye superimposed with your head and the background of the room overlapping.
|
|{{book|2|49}}
|
|-
|
|'''Japan Runs an Errand'''
|''"If ALL of Japan's islands disappear, would it affect Earth's natural phenomena (plates, oceans, hurricanes, climate, and so on)?"''
<div align="right">—Miyu Uchida</div>
|It could shift the Earth's center of mass and axis of rotation by a foot. Sea level could also rise by up to a foot and a half in some areas. Ocean circulation in the Pacific could also be impacted.
|
|{{book|2|50}}
|
|-
|
|'''Read All the Laws'''
|''"If a person wanted to read all of the governing documents that apply to them—from the federal and state constitutions, treaties, agency-issued regulations, federal and state laws, local ordinances, etc.—how many pages would they have to read?"''
<div align="right">—Keith Yearman</div>
|Between 145000 and 12.3 million pages.
|
|{{book|2|52}}
|
|-
|rowspan="3"|
|rowspan="3"|'''Weird & Worrying #3'''
|colspan="2"|''"If I were to jump into a container of liquid nitrogen (or dispose of a body that way), how deep would it have to be for me/them to shatter into frozen pieces at the bottom?"''
<div align="right">—Stella Wohnig</div>
|rowspan="3"|
|rowspan="3"{{book|2|52.5}} (W3)
|rowspan="3"|
|-
|colspan="2"|''"What would happen to you if a colony of ants suddenly appeared in you bloodstream all at once?"''
<div align="right">—Matt, on behalf of Declan</div>
|-
|colspan="2"|''"If Harry Potter forgets where the invisible entrance to Platform 9¾ is, how long would he have to crash into walls randomnly before discovering it?"''
<div align="right">—Max Planker</div>
|-
|
|'''Snowball'''
|''"What if I tried to roll a snowball from the top of Mount Everest? How big would the snowball be by the time it reached the bottom and how long would it take?"''
<div align="right">—Michaeline Yates</div>
|It would remain about the same size, or it could cause an avalanche.
|
|{{book|2|54}}
|
|-
|
|'''Walking Backward in Time'''
|''"What if you decided to walk from Austin, Texas, to New York City, but every step takes you back thirty days?"''
<div align="right">—Jojo Yawson</div>
| The sky would flicker at 50 Hz, and you would arrive around 300,000 years in the past.
|
|{{book|2|56}}
|
|-
|
|'''Ammonia Tube'''
|''"What would happen if you fed ammonia into your stomach through a tube? How fast must the flow rate be to burn your stomach from the heat released? What would the newly created chlorine gas do to your stomach?"''
<div align="right">—Becca</div>
|there would be direct tissue damage, and other horrifying effects. Side note: Do not attend Ms. Frizzle,s chemistry class.
|
|{{book|2|57}}
|
|-
|rowspan="7"|
|rowspan="7"|'''Short Answers #5'''
|''"Could life evolve in a constantly running microwave?"''
<div align="right">—Abby Doth</div>
|No.
|rowspan="7"|
|rowspan="7"{{book|2|58.5}} (S5)
|rowspan="7"|
|-
|''"Tonight at my work as an ER nurse in the emergency room, a patient (high on methamphetamine) asked for a cup of water. I returned with a paper cup of water, which the patient promptly threw at my head, missing me but hitting the wall in such an improbable way that the open top of the cup impacted the wall and the cup contained/diminished most of the subsequent splatter. It occured to me that it might be possible to throw a cup of water hard enough that the container of water would go through the wall. Is this possible?"''
<div align="right">—Pete</div>
|Anything will go through a wall if you throw it hard enough
|-
|''"How slow would you have to chew in order to be able to infinitely consume breadsticks?"''
<div align="right">—Miller Broughton</div>
|You would have to divide each breadstick into 20 bites, chewing each bite 200 times at 1 chew per second.
|-
|''"If you were somehow to remove the white and yolk from inside an eggshell (chicken), and replace them with helium, would the eggshell float in the air?"''
<div align="right">—Eliabeth</div>
|No. An eggshell weighs more than the air it displaces.
|-
|''"What would stars smell like, if it were possible to smell them?"''
<div align="right">—Finn Ellis</div>
|It would smell like bleach or burning rubber, and would taste sour.
|-
|''"What is the average size for every man-made object on the planet?"''
<div align="right">—Max Carver</div>
|Not too big, not too small. About average.
|-
|''"E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E<wbr>E"''
<div align="right">—Nate Yu</div>
|I feel you, Nate.
|-
|
|'''Dog Overload'''
|''"Assuming 1 out of every 4 people has a 5-year-old dog, and the dog reproduces once every year, with 5 puppies, and the puppies start reproducing at 5 and stop at 15 and die at 20, how long would it take for the Earth to be flooded with puppies, assuming we have all the food, water, and oxygen to sustain them?"''
<div align="right">—Griffin</div>
|
|
|{{book|2|60}}
|
|-
|
|'''Sunscreen'''
|''"Assuming that SPF works as it purports, what SPF would you need for a 1-hour trip to the surface of the sun?"''
<div align="right">—Brian and Max Parker</div>
|You would need SPF 3,200,000 or a giant blob of sunscreen.
|
|{{book|2|62}}
|
|-
|
|'''Walking on the Sun'''
|''"After the Sun runs out of fuel, it will become a white dwarf and slowly cool. When will it be cool enough to touch?"''
<div align="right">—Jabari Garland</div>
|in about 20 billion years, but you won't be able to physically touch it and survive.
|
|{{book|2|63}}
|
|-
|
|'''Lemon Drops and Gumdrops'''
|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right">—Shuo Peskoe-Yang</div>
|Human civilization would collapse, and we would all die.
|
|{{book|2|64}}
|
|-
|
|'''Bonus Chapter'''
|''"...but what if we tried even ''more'' power?"''
<div align="right">—Randall Munroe</div>
|
|
|{{book|3|70}}
|{{book|19|2024|12|03|jgafb8G7i4o|But what if we tried MORE power?}}
|-
|}

==Editors==
''[[#Article index|(jump back to table)]]''
===Add name of reader who asked the question.===
Here's how to add the name(s) to any question on the table. For example, this...
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
|Human civilization would collapse, and we would all die.</nowiki>
... becomes this:
<nowiki>|''"What if all the raindrops were lemon drops and gumdrops?"''
<div align="right"></nowiki>'''—'''<font color="SeaGreen">'''''InsertNamesHere'''''</font><nowiki></div>
|Human civilization would collapse, and we would all die.</nowiki>
Copy the code and replace the green part! (NOTE: It uses the em-dash, not a normal hyphen, so don't replace the dash, or use <code>&mdash;</code>.) Transcribe it exactly as it is written on the website or book, including parenthesis and age, if given by Randall. '''Protip for desktop users:''' the text looks ALL CAPS on the site, but if you copy and paste it, it's in normal Sentence Case. You can simply copy and paste.

===Add YouTube video===
<nowiki>{{book|YT-NUMBER|YYYY|MM|DD|</nowiki><font color="SeaGreen">'''''<nowiki>HTTPS://LINK</nowiki>'''''</font>|VIDEO-TITLE}}
'''EXAMPLE:''' <nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''2022'''''</font>|<font color="SeaGreen">'''''12'''''</font>|<font color="SeaGreen">'''''31'''''</font>|<font color="SeaGreen">'''''https://www.youtube.com/watch?v=2LSyNhb5Y'''''</font>|<font color="SeaGreen">'''''What if everyone pointed a laser at the moon?'''''</font>}}

===Add book chapter===
For the first [[What If? (book)|What If? book]]:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''1'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

For the second [[What If? 2]] book:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}

'''EXAMPLE:'''<nowiki>{{book|</nowiki><font color="SeaGreen">'''''2'''''</font>|<font color="SeaGreen">'''''69'''''</font>}}

If an article is available exclusively on the third book ([[What If? 10th Anniversary Edition]]) and not in the first two, use this:
<nowiki>{{book|</nowiki><font color="SeaGreen">'''''3'''''</font>|<font color="SeaGreen">'''''CHAPTER-NUMBER'''''</font>}}<noinclude>

===Link to a ''what if?'' article===
On this wiki, an easy way to link to a given ''what if?'' article is by using the {{Template|what if}} template. Copy and paste the text below, correcting the number and title (highlighted in green) to get this result:

'''EXAMPLE:'''
See the <nowiki>''[[what if? (blog)|what if?]]'' article ''{{what if|</nowiki><font color="SeaGreen"><ins>'''''158'''''</ins></font>|<font color="SeaGreen"><ins>'''''Hot Banana'''''</ins></font>}}<nowiki>''</nowiki>.
'''RESULTS IN:'''
See the ''[[what if? (blog)|what if?]]'' article ''{{what if|158|Hot Banana}}''.

NOTE: Since the blog releases are now random, please write a comment on [[{{LATESTCOMIC}}#Discussion|the newest comic's talk page]] to announce that a new ''what if?'' article is out.

''[[#Article index|(jump back to table)]]''
[[Category:What If?| 9]]{{xkcdmeta}}

2651: Air Gap

2025-02-07T00:19:41Z

WriterArtistCoder: Dead link to conflation explanation

{{comic
| number = 2651
| date = July 27, 2022
| title = Air Gap
| image = air_gap.png
| titletext = You can still do powerline networking, but the bitrate does drop a little depending on the lightbulb warmup and cooldown delay.
}}

__NOTOC__

==Explanation==

This is another one of [[Randall|Randall's]] [[:Category:Tips|Tips]], this time an Energy Tip. The comic conflates the concepts of computer network security and home electrical power safety to comical effect, resulting in a deeply impractical and ineffective proposed solution. In {{w|computer security}}, {{w|Air_gap_(networking)|air-gapping}} is a measure used to secure sensitive computers or networks of computers by isolating them from the broader internet, since computers are often breached through the internet.

[[Randall]] suggests increasing the security of your home power supply by air-gapping it, using the light from a powered lightbulb to power a solar panel which then supplies power to the home, such that there is no physical wired connection between your house and the public electricity network. This is a large and very inefficient version of an {{w|opto-isolator}}, but would protect equipment behind the solar panel from power surges such as lightning strikes (which in an improperly {{w|Ground (electricity)|grounded}} home could blow out the light bulb, but not so easily risk frying the equipment beyond the photovoltaic cell and its inverter). Due to its inefficiency, this approach would waste substantial amounts of energy. Optical power beaming is being investigated to recharge drones in flight.[https://www.youtube.com/watch?v=9MI2ph9jptM]

The title text mentions that a computer can still be connected to the internet via the power supply by using {{w|powerline networking}}, but that the bandwidth would be reduced by the lightbulb's warmup and cooldown delay, which would reduce the signalling rate the lightbulb could accomplish to no more than hundreds of bits per second, if that, for incandescent bulbs. However, as the light bulb cannot pick up any signals (possibly) emitted from the solar panel, the unidirectional link would be useless for traditional networking, because essential requests and acknowledgments would be unable to travel from behind the solar panel to the lightbulb. Early {{w|communication satellite}} systems for data networking used high-bandwidth unidirectional {{w|downlink}}s paired with low bandwidth ground telephone lines for outbound transmission, but such network configurations remain very uncommon.{{cn}}

Randall's solution is of course a joke. But in reality he could have used {{w|isolation transformer}}s, which serve to allow the transfer of power via changing {{w|electromagnetic field}}s without an electrically conductive path. Most transformers, including "wall wart" power adapters, provide this form of isolation and protect devices from noise, voltage transients, most surges, and shock hazard, using fuses and other circuitry. They also limit powerline networking bandwidth by filtering out high frequencies. One relatively obscure way this comic is funny involves the relationship of the two concepts being conflated. {{w|Power analysis}} in computer security is a form of {{w|side-channel attack}} where the attacker observes and/or manipulates the power use by a device for some reason — for example, to gain insight into an otherwise protected process, or to exfiltrate information without having to use a monitored network connection. Power analysis in fire safety means measuring the {{w|power factor}}, watts, resistance, inductance, capacitance, volts, and amps of electrical circuits.

The look and subject of this comic is reminiscent of the [[:Category:Cursed Connectors|Cursed Connectors]] series. But without the numbered cursed connector in the comic, this is not one of those connectors.

===Why this would be inefficient and impractical===
* Even energy-efficient LED lightbulbs are only about 35% efficient at turning electricity into light, with the rest emitted as heat.
* The air gap is inefficient at passing light from the bulb to the panel, causing some of the light from the lightbulb to be lost to places other than the solar panel, such as to the eye of the observer. A rough guess might be that in the configuration shown less than 60% of light produced will reach the panel, even assuming a perfect reflector.
* Solar panels are generally around 20% efficient at converting light into electricity, with claims at the world record from a single light source at around 40%.

All these efficiency-reducing factors, and others, multiply together. Therefore, only a small fraction of energy would be transmitted between the two ends of the air gap, making the circuit require much more electricity and be much less cost-efficient. For instance, the generous assumptions above lead to 96% of the power being lost. The solution as illustrated shows a single apparently-normal lightbulb, which typically draw no more than 250 watts, and usually much less power. Given the above efficiency issues, it would provide less than a tenth as much power.

===How this could have a theoretical benefit===
In electrical engineering, {{w|galvanic isolation}} is a measure to prevent an electric current flow between two circuits, instead, signals and energy are exchanged through indirect methods, e.g. magnetically, optically, or wirelessly. This is used to isolate a dangerous high-voltage circuit from the rest of the device, ensuring equipment and personal safety, it's also used to isolate sensitive measurement instruments from external noise, interference, and surges. Isolation transformers have several inherent limitations, and must be used together with other filtering and surge protection devices. The first problem is voltage rating, it's difficult to find a mains-voltage isolation transformer rated beyond a few kilovolts. Secondly, a transformer offers strong protection in steady-state DC and low-frequency 50/60 Hz AC faults, but only limited protection from differential-mode transients and surges. If an electrical surge has significant energy that happens to overlap with the transformer's working frequency (for a switched-mode power supply, this is around several kilohertz), the surge can partially bypass the transformer and enter supposedly-isolated sensitive equipment. Parasitic capacitance is another problem. A capacitor is formed whenever two conductors are separated by an insulator, and the insulated windings inside transformers are no exception. At 100 MHz, the impedance of even a tiny 20 pF capacitance is 79.5 jΩ. As a result, even though the DC impedance across a transformer is several megaohms, but it quickly deteriorates at high-frequency, allowing noise and interference to bypass the transformer and getting into sensitive measurement instruments. Worse, the primary and secondary sides of the transformer can radiate strong electromagnetic interference, since a dipole antenna is formed by two metal plates at different electric potentials. The radiation is suppressed by [https://www.analog.com/media/en/technical-documentation/application-notes/an-1109.pdf bridging the transformer with capacitors], forcing the electric potential to be the same at both sides at high frequency. The drawback is a further increase of capacitance, and a possible reduction of the isolation voltage rating, since [https://incompliancemag.com/article/designing-ethernet-cable-ports-to-withstand-lightning-surges/ capacitors are often the weakest part] of the barrier.

Thus, there are exotic situations where an electrical connection must be avoided at all costs regardless of its efficiency, when safety or electromagnetic interference problems are critical. [https://www.mdpi.com/2304-6732/8/8/335 Power over Fiber (PoF)] technology has been developed to address these needs. Using lasers, photovoltaic cells, and an optical fiber in between, the isolated load can be placed at a long distance away, allowing high voltage rating and extremely low parasitic capacitance. One example is high-voltage isolation at utility-grid scale, when the voltage can be 10 kV or higher. Electronic Design magazine [https://www.electronicdesign.com/technologies/power-electronics-systems/article/21189815/power-over-fiber-shines-at-voltage-isolation reported an early 2006 product], with the lasers in the transmitter consume about 48 watts of power, in order to deliver about 720 milliwatts at the receiver - an efficiency of 1.5%. More recently, [https://docs.broadcom.com/doc/AFBR-POCxxxL-DS Avago (now Broadcom) also commercialized] this technology, with receivers available for sale at $710. "With 1.5 W of laser light incident [...] up to 120 mA of current can be extracted at an operating voltage of 5.0 V and a total power delivery of 600 mW." Typical applications include "high voltage current sensors and transducers", "E-field and H-field probes", and "MRI/RF imaging coils and patient monitoring equipment".

==Transcript==
:[A solar panel and a lamp are pictured together, with the lamp pointed at the solar panel, and electronic equipment connected to the solar panel. Lines point outward from the bulb, indicating that it is shining.]
:[Caption below the panel]
:Energy tip: Increase the security of your home power supply by installing an air gap.

{{comic discussion}}

[[Category:Tips]]
[[Category:Computer security]]

2428: Mars Landing Video

2025-01-16T03:07:35Z

WriterArtistCoder: Brevity and order of sentences

{{comic
| number = 2428
| date = February 22, 2021
| title = Mars Landing Video
| image = mars_landing_video.png
| titletext = The best part of crashing a Mars briefing is you can get in a full 11 minutes of questions before they can start to respond.
}}

==Explanation==
Three days before this comic was published, NASA successfully landed a new rover, {{w|Perseverance (rover)|''Perseverance''}}, on Mars. This was also the subject of the previous comic [[2427: Perseverance Microphones]].

This comic was published shortly before a [https://www.youtube.com/watch?v=gYQwuYZbA6o NASA press briefing] that showed, as mentioned in the comic, the first ever full-speed video of a Mars landing. This comic is set at that press briefing and was published shortly before NASA, either unaware of Randall's threat or recognizing that it was not serious, went ahead and held the briefing in real life. "Full-speed" here means that the video was captured at a {{w|frame rate}} high enough that it looks continuous when played back, as opposed to low-frame-rate imagery that looks jerky when played back.

This was the first-ever full speed video of a Mars landing, making it technically the worst one (as well as the best one). [[Randall]] has apparently been banned from NASA's press briefings, and decided to (literally) crash the conference solely to point this out.

Although this is merely because the video is the only one of its kind, the fact that it is technically true and the way Randall phrases it makes it look embarrassing for NASA. He follows up by asking whether NASA plans to make a worse Mars landing video, which is silly because people generally don't intend to make something worse.{{Citation needed}} The tendency of Randall (the character, not the real-life person) to make rude, embarrassing, and otherwise unwelcome comments is probably why he has been banned from NASA's press briefings, as well as [[:Category:Banned from conferences|many other conferences]]. More Mars missions would upset this embarrassing record, thankfully for both NASA's image and its goals.

Judging by the sound effects, Randall has chosen to literally crash his way through the roof, using a "skycrane" — a general term for aerial vehicles that can lower or raise objects similarly to standard cranes. On Earth one might use the {{w|Sikorsky S-64 Skycrane}} helicopter, while NASA used a custom-built skycrane delivery system for the ''Perseverance'' rover. Randall finds using a skycrane to crash a conference about a skycrane ironic, especially since security was totally unprepared to deal with a technique NASA itself developed.

At the time of the mission, Earth and Mars were 11 light-minutes apart, meaning that if there was some problem with ''Perseverance'' or ''Ingenuity'', mission control would find out 11 minutes later, and their response would be received after another 11 minutes. In the title text, Randall twists this into an 11-minute period in which he can ask whatever questions he likes from Earth before NASA can respond on Mars. This plays on the ambiguity of "Mars briefing", taking it to mean a briefing taking place on Mars, rather than a briefing ''about'' Mars.

==Transcript==
:[Hairbun is standing, arms spread out, on a podium in front of a lectern. There is a "Crash" on the top right of the panel with several lines around to indicate the position, and an off panel voice coming from there. As indicated in the caption below the voice is from Randall.]
:Hairbun: We're excited to share the first ever full-speed video of a Mars landing.
:Sound: ''Crash''
:Randall (off-panel): Doesn't that mean it's also the ''worst'' ever full-speed video of a mars landing?
:Randall (off-panel): Do you expect that record to stand forever, or is NASA working on a worse one?

:[Caption below the comic]:
:NASA tried to ban me from their press briefings, but ironically their security was totally unprepared to deal with a skycrane.

{{comic discussion}}

[[Category:Mars rovers]]
[[Category:Banned from conferences]]
[[Category:Comics featuring Hairbun]]
[[Category:Comics featuring Randall Munroe]]

190: IPoD

2025-01-05T23:48:52Z

WriterArtistCoder: Linked to 72, removed Apple iPod mention

{{comic
| number = 190
| date = November 29, 2006
| title = IPoD
| image = ipod.png
| titletext = For smaller numbers he has to SAVE lives. The birthrate channel is even more of a mixed bag.
}}

==Explanation==
{{w|Internet Protocol|IP}} is one of the main protocols of the Internet. It is used to route data packets from one computer to another, using other computers or even complete networks in between if needed. It is designed to use the fastest (not necessarily the shortest) route to the target, automatically using another route if a connection or a transmitting host fails.

Every participant of the network has to have a so-called {{w|IP address}}. The data is divided into ''packets'', each consisting of a header and the payload. The header tells the transmitting parties where the packet comes from and where it should go (together with some other details). The payload is the data to be transmitted.

IP packets can be carried by a variety of transport networks. Such methods are often referred to as "IP over X" (or "IPoX" for short). Examples include {{w|IP over DVB}}, [http://www.tldp.org/HOWTO/ATM-Linux-HOWTO/ip-over-atm.html IP over ATM], and the humorous [http://www.faqs.org/rfcs/rfc2549.html IP over Avian Carriers].

[[Black Hat]] (and other statisticians) are using demographics as IP packets to send data. In order to adjust the death rate to encode the header, Black Hat plans to travel to New Jersey and go on a killing spree with a crossbow, instead of merely hacking the census bureau's computers. Such antics could only be used to ''increase'' the death rate; decreasing it would require saving lives instead, as mentioned in the title text. Also as mentioned, birth rates would be trickier to manipulate; doing so would require encouraging or discouraging women to have children, [[72|compromising birth control]], or conceiving children himself; all would have a nine-month delay.

Crossbows were also mentioned in [[564: Crossbows]], and Black Hat is seen using his crossbow in [[929: Speculation]].

==Transcript==
:[Black Hat sits at a computer. Cueball stands behind him.]
:Black Hat: You see, statisticians communicate using IPoD -- IP over Demographics. For example, the header of the next packet I send will be encoded into the New Jersey death rate.
:Cueball: So you're going to hack the census bureau and change the number of reported deaths?
:Black Hat: Guess again.
:Black Hat: Hey, have you seen my crossbow?

{{comic discussion}}
[[Category:Comics featuring Black Hat]]
[[Category:Comics featuring Cueball]]
[[Category:Crossbows]]

900: Religions

2025-01-05T21:57:13Z

WriterArtistCoder:

{{comic
| number = 900
| date = May 18, 2011
| title = Religions
| image = religions.png
| titletext = But to us there is but one God, plus or minus one. —1 Corinthians 8:6±2.
}}

==Explanation==
The late {{w|Harold Camping}}, a Christian pastor, wrongly predicted that the world would end in May 21, 2011. Since it didn't, he moved the date to October 21 of that year, and when that passed uneventfully, he recanted his belief that the end time could be calculated. In the {{w|Christianity|Christian belief}}, the end of the world is called "the second coming" (referencing the return of Jesus); some sects believe this will be preceded by an event called "the Rapture."

The first frame is a reference to raptors in {{w|Jurassic Park (film)|Jurassic Park}}, and certainly [[:Category:Velociraptors|not Randall's first raptor joke]]. In this film, the raptor dinosaurs get much more dangerous once they learn how to open doors.

In the second frame, Cueball describes his personal approach to religion, starting by saying that he is Christian but only attends church services on Christmas and Easter. This is a {{w|Lapsed Catholic|well-known phenomenon among lapsed Christians}}, and if Cueball is not a regularly practicing Christian, it would certainly explain why he isn't particularly interested in this fundamentalist aspect of Christian belief. However, from here, his description takes a turn towards the ridiculous, when he says that every other day of the year is spent "at the mosque". Not only are mosques the place of worship for a completely different religion (specifically, {{w|Islam}}), they also generally hold communal services only on Fridays, so for Cueball to present this practice so matter-of-factly is quite absurd. When Megan questions the ubiquity of his practices, he replies by saying that this practice is vetted by his rabbi - a spiritual leader in {{w|Judaism}}, a third separate religion. While all three of these are {{w|Abrahamic religions}}, and as such have some overlap in their beliefs and texts, combining them all into one religion would be far from a simple process; either Cueball is simply being contrarian for comedic purposes, or he is involved in a very strange religious sect indeed.

The third frame is a math joke in which Megan references {{w|error bars}} which are used on graphs to indicate the uncertainty. So, Megan believes in one God (monotheism), as she says in the comic. But if she is still trying to find the error bars, and from the title text it is "one, plus or minus one", that could be in the range of zero ({{w|atheism}}) to two ({{w|Dualism|bitheism}}). With larger error bars, this could also reference the doctrine of the {{w|Trinity}}, which holds that there is "one God in three Divine persons": the Father, the Son (Jesus), and the Holy Spirit. Some consider this position to be polytheistic, as others would consider atheism to merely leave the number and nature of gods undefined (and, as a seperate concept, {{w|agnosticism}} rendering it as untestable whatever the hypothetical value might be).

The title text is a supposed excerpt from the holy text of experimental monotheism. {{w|First Epistle to the Corinthians|1 Corinthians}} is a book of the {{w|Christian biblical canons|Christian Bible}}. Megan refers to chapter 8 verse 6 (±2), which would be [https://www.biblegateway.com/passage/?search=1+Corinthians+8%3A4-8&version=ESV verses 4–8]. Verse 4 says "...There is no God but one". Confusingly, verse 6 says "yet for us, there is but one God, the Father, from whom all things came and for whom we live; and there is but one Lord, Jesus Christ, through whom all things came and through whom we live." (That could be self-consistent if the passage assumed that Jesus Christ is a lord but not a god, but little, if any, mainstream denominations of Christianity seem to follow such a doctrine).

==Transcript==
:[Cueball and Megan talking.]
:Megan: So are you worried about the rapture?
:Cueball: No, unless it figures out how to open doors.
:Megan: I said ''rapture.''

:Cueball: Oh, I'm not really into that. I'm the kind of Christian who only goes to church on Christmas and Easter, and then spends the other 363 days at the mosque.
:Megan: ...I don't think that's a thing.
:Cueball: <small>Our rabbi swears it's legit.</small>

:Cueball: What religion are you?
:Megan: Experimentalist Monotheism.
:Cueball: Which is?
:Megan: We believe there's one god, but we're trying to find the error bars on that number.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Religion]]
[[Category:Velociraptors]]
[[Category:Statistics]]

2793: Garden Path Sentence

2025-01-05T00:47:25Z

WriterArtistCoder: Clearer phrasing of first paragraph

{{comic
| number = 2793
| date = June 23, 2023
| title = Garden Path Sentence
| image = garden_path_sentence.png
| imagesize = 435x435px
| noexpand = true
| titletext = Arboretum Owner Denied Standing in Garden Path Suit on Grounds Grounds Appealing Appealing
}}
==Explanation==
In a {{w|garden-path sentence}}, the initial attempt to parse its beginning leads to the wrong meaning, causing confusion when the sentence is completed. A classic example of a garden path sentence is "The old man the boat." This seems like nonsense when "the old man" is parsed as a noun phrase, but when "the old" is parsed as a noun, and "man" as a verb meaning "to operate", the sentence means "The old people operate the boat."

Possible grammatically correct interpretations of the sentences in this comic are:

There was a court case regarding green walkways. The case was resolved with a sentence relating to an olive garden path. That sentence was vacated (cancelled) by a judge. That judge was flying an airplane. The airplane struck multiple birds. The plane overturned, but righted (turned right-side-up) and landed safely.

After (bird strikes)<sup>1</sup>, (judge)<sup>2</sup>, (who ordered)<sup>3</sup> (olive garden-path sentence)<sup>4</sup> in (case of green walkways)<sup>5</sup> (vacated)<sup>3</sup>, (overturned but rights and lands safely.)<sup>2</sup>

# "[[wikipedia:bird strike|bird strike]]s": Airplane colliding with birds in flight, or alternatively "bird strikes" could refer to the strikes called by the Bird union that this judge was known for or involved in the ruling of.
# "judge ... overturned but rights and lands safely": The judge (and presumably the plane they were in) flipped over but was able to get right-side up again and land safely
# "who [[wikipedia:Court order|ordered]] [the sentence to be] [[:wikipedia:Vacated judgment|vacated]]": Identifies the judge as one who issued a ruling cancelling an earlier ruling.
# "[[wikipedia:Olive|olive]] garden path [[wikipedia:Sentence (law)|sentence]]": The thing that was cancelled was a punishment related to a path in an olive garden
# "[[wikipedia:Legal case|case]] of [[wikipedia:Greenway (landscape)|green walkways]]": The punishment was in a court case about shared-use walkways (likely the same paths listed above, which may have been placed in an olive garden)

This interpretation is backed by the images below the headline on the depicted newspaper which show an airplane and a map with apparently a flight path with two markings in between.

Another way to break it down is, "After [the] bird strikes, [the] judge... [is] overturned, but [she] rights and lands safely." And she was "[the] judge who ordered [that the] olive garden-path sentence" (the legal sentence concerning a path in an olive garden) "in" (what is known as) "[the] Case of [the] Green Walkways [be] vacated."

A third way is: "The stuff in this article happened after a bird hits a judge's plane where they ordered an "olive garden path" punishment in a court case about green footpaths and is now ON their empty plane which then overturns but then turns right and lands in a safe manner."

This comic also pokes fun at newspaper headlines, which typically have minimal punctuation or articles and use only capital letters, leading to such ambiguities.

For another valid parsing of the sentence, here are some explanatory notes that aid in understanding:
* A criminal court case occurred involving green-colored walkways.
* The sentence handed down in the case involved a specific walkway (a garden path) and a specific shade of green (olive).
* A certain judge had ordered that the sentence be vacated (a legal term meaning undone or expunged).
* That judge was recently piloting a plane which, due to being struck by birds, overturned.
* The judge righted the plane (turned it right-side-up) and landed safely.

A mostly similar, but slightly more comical interpretation (though less likely for a newspaper headline) can be:
After (a) bird strikes, (the) judge ... (as above) (is) overturned, but rights and lands safely. In this case, the judge is standing, a bird strikes her and she is overturned, but she manages to right herself and land safely on the ground (not banging her head, for instance).

Another way of diagramming this (where noun phrases are in parenthesis and verbal clauses in brackets) would be:
[ after
(bird strikes)
],
[ ( the judge
[ who ordered
( ( ( olive garden path)
sentence
)
[ in case of
(green walkways)
]
) be vacated
]
)
is overturned, but
[ (she) rights (herself) and
[lands safely]
]
].

Certain combinations of words in the sentence are particularly easy to parse incorrectly. For example:
* "bird" the headline is in all caps so this could be an avian but could also mean a person with the name of Bird such as Larry Bird the basketball player.
* "bird strikes judge" can be interpreted to mean that a bird deliberately hit the judge with an appendage or weapon. If bird is a person or other worker, the phrase might mean a labour dispute in which Bird is withdrawing services
* "Olive Garden" is the name of a restaurant chain, and "ordered Olive Garden" could mean "placed an order for food from Olive Garden"
* Olive Garden could be a person who was the subject of the case in question
* "Garden path sentence" is a type of (written language) sentence
* "Green" could be referring to "green" initiatives, environmentally-friendly practices being used or to the color green, rather than to a park area
* "in case of" can mean "in the event of" (e.g. "in case of emergency, break glass")
* "vacated" and "overturned" can both mean "undone" in a legal context, and "rights" can refer to legal or constitutional rights

Ignoring the pictures showing a plane and flight path and only focusing on the headline, it could also be interpreted this way:
* "After bird strikes judge", "overturned but rights and lands safely": an avian creature flew into the judge, and as it bounced off it was upside-down, but it managed to recover in time to go right-side-up to land nearby.
* "case of green walkways", "olive garden path sentence": There was a case about green walkways, and the ruling was for an olive garden path (or it is dubbed the "Olive Garden path sentence" for the restaurant chain, because it is strongly linked to the chain - either they wanted this sentence as it benefits them or the chain is notorious for it).
* "judge who ordered", "vacated": The aforementioned judge is known to people for ordering that the sentence be vacated (perhaps this was highly controversial), thus making this event significant enough to warrant a headline.

If one focuses on the word "judge", many of the phrases relate to legal proceedings, making the parsing of the sentence especially difficult:
* "strike": to remove or delete from a legal document and especially from the record of a trial
* "order": a direction issued by a court or a judge requiring a person to do or not do something
* "sentence": punishment assigned to a defendant found guilty by a court
* "case": a civil or criminal proceeding at law or in equity
* "vacate": to legally annul, set aside, or render void
* "overturn": to disagree with a decision made earlier by a lower court
* "rights": powers or privileges held by the general public as the result of a constitution, statute, regulation, judicial precedent, or other type of law

Furthermore, the word "lands" can have two meanings:
* The present simple variation of "to land": in the context of an airplane, to come down through the air and alight on the ground
* The plural of "land", a common issue in legal proceedings

The title text is also an example of a garden path sentence. The meaning is probably the following: Arboretum owner, [who was] denied [legal] standing in [the] garden-path [law]suit on grounds (the reason) [that the garden] grounds [are] appealing, [is] appealing [the ruling]. Alternatively: Arboretum owner, [who was] denied [legal] standing in [the] garden-path [law]suit on grounds (reasoning) grounds (why it was denied), [is] appealing appealing [the ruling].

==Transcript==
:[A newspaper titled ''News'' with two pictures on the front page: one showing a judge with an airplane in the background, and the other displaying a map depicting the airplane's route. Above the pictures there is the following headline, displayed in all capital letters:]
:AFTER BIRD STRIKES JUDGE WHO ORDERED OLIVE GARDEN PATH SENTENCE IN CASE OF GREEN WALKWAYS VACATED OVERTURNED BUT RIGHTS AND LANDS SAFELY

{{comic discussion}}

[[Category:Language]]
[[Category:Aviation]]
[[Category:Animals]]

1131: Math

2024-05-13T05:08:37Z

WriterArtistCoder: Linked to 154: Beliefs

{{comic
| number = 1131
| date = November 7, 2012
| title = Math
| image = math.png
| titletext = As of this writing, the only thing that's 'razor-thin' or 'too close to call' is the gap between the consensus poll forecast and the result.
}}

==Explanation==
In another election-themed comic (this one posted the day after the {{w|United States presidential election, 2012|2012 U.S. presidential election}} November 7, 2012)—(see also [[1122: Electoral Precedent]], [[500: Election]], [[1127: Congress]], and [[1130: Poll Watching]])—this comic shows a bar graph representing expected (see note below) {{w|Electoral College (United States)|electoral college}} votes in the election, including a dotted line indicating the 270 electoral votes needed to win, a span of projections ("Forecast"), and the actual result.

The forecast range is to the right of the 270 line, showing that the ''blue candidate'' {{w|Barack Obama|Obama}} (the {{W|Democratic Party (United States)|Democratic candidate}} is the ''blue candidate'' and the {{W|Republican Party (United States)|Republican candidate}} is the ''red candidate'' according to a convention used since the 2000 election) was always projected to win by statisticians like [[Nate Silver]] and others. The only question among these people was by how much he was going to win. (The Electoral College votes are expectations until each state's voting results are announced early in November, and the electors actually vote in December and may change the situation somewhat.) Randall is attempting to use this particular election to imply that polling data accurately indicates the likely outcome of a presidential election. However, the close match between prediction and result in this one election could be a coincidence; the outcome of U.S. presidential elections frequently differs from projections. Notably, in 1948, the Chicago Tribune printed a headline which turned out to be false and in 2016, polling data indicated that Clinton would defeat Trump.

By contrast, most of the media was calling the election too close to call, with some news outlets actually projecting a {{w|Mitt Romney}} win. Essentially the large number of Republican {{w|pundit}}s who helped increase the pressures of right wing self-referencing media denial, the tendency of media to give any issue at least two dramatically or fictionally equal voices (for supposed "fairness") regardless of the relative merits of the two sides, and the desire to present the election as a suspenseful "horse race" resulted in a lot of ''talking heads'' (i.e. pundits) disbelieving the polls. These factors shaped the "too close to call" narrative, leading to the punch line of this story:

[[154|You don't need to believe in science or statistics for it to effectively describe or predict reality.]] The progressively more radicalized elements of this era are known for disregarding scientific or statistical consensus which reflects reality but does not conform to their world view. However, many of them were correct in their belief (in defiance of statistical data to the contrary) that Donald Trump would be elected in 2016.

For those unfamiliar with the {{w|United States presidential election|US Presidential electoral process}}: Unlike other political offices, the election for president is not a direct election. Instead, each state is apportioned a certain number of "Electoral College" votes based on the number of House of Representatives seats (which is based on population) and Senate seats. For the most part (and there is perennial discussion on whether this should be changed) the candidate that receives the most popular votes in a given state receives all the Electoral College votes for that state. With 538 electoral votes total, receiving 270 Electoral College votes ((half of 538) + 1) is sufficient to be declared president-elect. For this reason, sometimes one candidate actually receive more popular votes (more people voted for the candidate) but have fewer Electoral College votes. This happened three times in the nineteenth century with elections of {{w|United States presidential election, 1824|John Quincy Adams in 1824}}, {{w|United States presidential election, 1876|Rutherford B. Hayes in 1876}} and {{w|United States presidential election, 1888|Benjamin Harrison in 1888}}. Then it did not happen again until the election of {{w|United States presidential election, 2000|George W. Bush in 2000}} and {{w|United States presidential election, 2016|Donald Trump in 2016}}.

The title text is a subversion of what everyone else was saying at that time: that the election was unpredictable. Pundits often declare events to be "too close to call" when poll results are remarkably close; Randall is saying that the only thing that is "too close to call" is the difference between the results and the predicted results, as the outcome is all but certain.

==Transcript==
:[A frame with a bar chart showing 58% blue and 42% red. A header shows a range between 53-63%]
:Forecast
:[An arrow below the chart is pointing at the line between the blue and the red sections of the chart with a heading]
:Result
:[Below the frame is a caption]
:'''''Breaking:''''' To surprise of pundits, numbers continue to be best system for determining which of two things is larger.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Politics]]
[[Category:Elections]]
[[Category:Charts]]
[[Category:Math]]
[[Category:Statistics]]

2930: Google Solar Cycle

2024-05-09T20:03:32Z

WriterArtistCoder: Added to Category:Comics to make one feel old

{{comic
| number = 2930
| date = May 8, 2024
| title = Google Solar Cycle
| image = google_solar_cycle_2x.png
| imagesize = 357x293px
| noexpand = true
| titletext = From Google Trends, it looks like the lag between people Googling cocktail recipes and 'hangover cure' is 14 hours.
}}

==Explanation==
{{incomplete|Created by a SOLAR FLARE SEARCHING UP SOLAR FLARES - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
{{w|Solar flare}}s appear on the Sun's surface in different numbers at different times. A {{w|solar cycle}} is the amount of time that elapses between times of maximum (or minimum) solar flare activity. This period is approximately 11 years.

Solar flares can generate interest, and 'news' stories at times of high activity, because they can sometimes cause {{w|aurorae}}, as well as power outages and other similar issues. Hence people will be more aware of them, and search for "solar flares" on Google to learn more about them. This trend somewhat matches the solar cycle since people will be more interested/concerned about solar flares during the times they are abundant and search for them more often. Randall notes that Google has existed for long enough to see [https://trends.google.com/trends/explore?date=all&geo=US&q=Solar%20Flares&hl=en the trend in searches for "solar flare" over a full solar cycle.]

The title text comments that people usually Google "hangover cure" 14 hours after they search for cocktail recipes. This suggests that people decide they want cocktails, look for ways to make cocktails, make (and presumably drink) the cocktails, wake up with a hangover and look for ways to get rid of the hangover. Google trends [https://trends.google.com/trends/explore?date=now%207-d&geo=US&q=Cocktail%20recipe,Hangover%20cure&hl=en does indeed] suggest that there is roughly a 14-hour difference in peaks between these searches, however this does not mean (as the title text implies) that the people searching for cocktail recipes are the same people that are searching for hangover cure later. It may represent the (not unreasonable) assumption that people who are exploring the idea of cocktails (for themselves or others) generally start to do so from the early evening onward, whilst those who find themselves freshly under the weather (not ''just'' from cocktail consumption) are likely to be finally provoked to look up a solution from around the mid-morning.

One can illustrate the pitfalls of assuming such causation by substituting "chicken nuggets" for "cocktail recipe" which shows a very similar relationship. Chicken nuggets are not known to cause hangovers.{{cn}}

Looked at another way, there is a 10-hour 'lag' from searching for "hangover cure" to searching for "cocktail recipe"; this does not imply that having a hangover is causing people to be interested in drinking cocktails!

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:In the top left corner of the image, the words ''Google Trends search traffic for "Solar Flare"'' are present (the name of the graph.)
:[A graph starting in 2005, peaking in 2013. It rises until 2024 when the graph cuts off. There is an arrow in between the two peaks labeled "11 years".]

:[Caption below the panel:]
:I like that Google has existed almost long enough for us to observe the solar cycle using Google Trends.

{{comic discussion}}

[[Category:Timelines]]
[[Category:Line graphs]]
[[Category:Google Search]]
[[Category:Astronomy]]
[[Category:Food]]
[[Category:Comics to make one feel old]]

786: Exoplanets

2024-05-02T01:31:38Z

WriterArtistCoder: Linked to other mention of Project Orion in #2423

{{comic
| number = 786
| date = August 30, 2010
| title = Exoplanets
| image = exoplanets_2010.png
| titletext = I'm just worried that we'll all leave and you won't get to come along!
}}

==Explanation==
[[Beret Guy]] runs to wake up [[Cueball]], who is probably under the covers in bed, with his potentially middle of the night revelation that Humankind is discovering "{{w|exoplanet}}s" or planets that exist outside of our solar system. The indication is that these planets are habitable enough for humans, even if just for a visit.

Then Beret Guy takes it a bit further thinking that one of the countries on Earth could restart {{w|Project Orion (nuclear propulsion)|Project Orion}} (which is later mentioned in [[2423: Project Orion]]. As Beret suggests, Project Orion was an early project to produce a spacecraft that would ride the shockwave from a series of nuclear bombs it dropped in order to travel very, very fast. However, the one major downside of Project Orion was the fallout that the launching of any such craft would present on Earth. One could try to boost the Orion spacecraft into orbit with conventional rockets, but Orion spacecraft are heavy — being composed of giant pusher plates and rows upon rows of nuclear bombs, they are hard to lift. On top of this, the {{w|Nuclear Test Ban Treaty}} means that the craft would be flatly illegal to build and launch on Earth, no matter what you did. However, if an asteroid mining project were to be started, the Orion drive spacecraft, the nuclear bombs, and all the infrastructure needed to man, build, and crew it could all be built safely in space, well away from the Earth's fragile biosphere, where little harm could be done. Some commercial spaceflight programs are interested in starting asteroid mining in the future, or even now: For example, see: https://www.planetaryresources.com.

In summary, Beret is very excited that we can see (with the Hubble telescope and other earth-bound telescopes) and find exoplanets. Then with some advances in space technology we can create nuclear propulsion in space to reach these planets, and it will all be happening quite possibly within a few decades. He is thus worried that Cueball will miss all of this ongoing excitement.

Cueball would just rather snooze, as he is not impressed. Beret Guy gives him only one snooze because as is apparent in the title text he is afraid that Cueball will be left behind if he snoozes too long! Giving the fact that he just stated that it may take hundreds of years this is of course silly but fits well with Beret Guy's behavior.

Exoplanets have been discovered starting in 1996, but there are still only a few confirmed {{w|List of habitable planet candidates|planet candidates}} in the habitable zone at a distant star. This did change fast after that time since new ways of finding planets are created — see [[1071: Exoplanets]], which was posted with the same title. At that point, there were exactly 786 Exoplanets confirmed — the number of this comic - probably not a coincidence when it comes to [[Randall]].

Part of the humor of this particular strip is that Beret Guy seems to have a sense of urgency and immediacy about something that is actually occurring at a snail's pace over decades, where Cueball finishing sleeping, or hitting snooze twice, couldn't possibly make one crystalline erg of difference.

[[1624: 2016]] is similar to this comic in that in each case, one character wakes up another character in order to inform that character about an event that is neither immediately relevant to that character nor short/urgent enough that that character could miss it if he slept until the morning.

==Transcript==
:[Beret Guy runs into a bedroom arms up calling to someone who is in the bed under the covers. Only part of the bed is visible. The person under the covers speaks. Later part of his face can be seen, and it could be Cueball.]
:Beret guy: Wake up! Wake up!
:Cueball (under the cover): What is it?

:[Beret Guy stands with his arms out talking to Cueball hiding under the covers of the bed now completely inside the panel.]
:Beret guy: We're alive during the time when they're first discovering other planetary systems! They're finding them as fast as they can build new instruments to look for them!

:[In this frame-less panel only Beret Guy is shown standing with one arm out and one arm up looking left away from the off-panel bed.]
:Beret Guy: And if one of Earth's cultures advances its space program enough to start enriching uranium on asteroids, we'll lose the main barrier to restarting Project Orion and building nuke-riding city-ships!

:[Beret Guy bends down, hands on his knees, to eye level with Cueball in the bed, who is finally peeking out from the covers, only showing part of his face (so it could be any character, as any hair could be hidden, and the hat could be on the bed stand).]
:Beret Guy: The only known technology capable of fast interstellar travel could be operational within just a few generations, and we're discovering all these destinations to pick from!
:Beret Guy: Come ''on!''
:Cueball: Can I hit "snooze"?
:Beret Guy: Okay, but ''just once!''

==Trivia==
*This was the first time Randall released a comic with the exact same name as a previous comic, in this case [[1071: Exoplanets]], released on June 20, 2012. Since then, he has done so [[:Category:Comics sharing name|a few times]]. When the new comic was released, it caused problems on xkcd as the title of the image file (<code>explanets.png</code>) was the same for the two comics. This was resolved by renaming this comic's image, adding the year of its release to the title: <code>explanets_2010.png</code>.

* The number of this comic ([[786: Exoplanets]]) is the same number of planets featured in the comic [[1071: Exoplanets]] (786 planets) with the same title. It isn't clear whether this is a coincidence or Randall purposefully waited for the number of discovered planets to be the same as this comic's number.

*Cueball is not completely visible in this comic, and the last image only shows a face. Given that almost all characters without a beard have the same face, this could be any character, including one with a hat (which could be hidden or outside of the frames) or hair (several of the usual styles). The comic's official transcript refers to this person as "bed man", meaning it isn't intended to be a female character. As it is easier to explain the comic using Cueball's name, and given that he is the usual guy to draw when no particular features are added, it still makes sense to call him Cueball in this comic.

{{comic discussion}}

[[Category:Comics featuring Beret Guy]]
[[Category:Comics featuring Cueball]]
[[Category:Astronomy]]
[[Category:Exoplanets]]
[[Category:Comics sharing name|Exoplanets01]]
[[Category:Nuclear weapons]]

2362: Volcano Dinosaur

2024-04-07T04:36:24Z

WriterArtistCoder: Linked sentence about dinosaur ancestry to 1545

{{comic
| number = 2362
| date = September 21, 2020
| title = Volcano Dinosaur
| image = volcano_dinosaur.png
| titletext = Phylogeneticists are working on identifying and notifying its next of kin.
}}

==Explanation==

This comic is a reference to [https://www.independent.co.uk/news/world/asia/new-dinosaur-discovered-china-volcano-b511774.html this discovery] of [https://peerj.com/articles/9832/ fossils of dinosaurs that were buried and killed by a volcanic eruption].

Megan asks if the dinosaur was okay. As living things typically don't survive being fossilized in volcano debris{{Citation needed}}, the answer to the question would obviously be "no", but Cueball replies that he is unsure. Even if the dinosaur somehow survived the initial burial, it would be very difficult for it to survive being buried for 125 million years. 2020 probably wouldn't be the best year to dig it up and potentially let it free.

It is not an uncommon shortcut to refer to finds of relatively intact fossilized pieces of an animal using wording that sounds like they found an entire animal intact, as in the headline "New dinosaur discovered" rather than a wordier but more accurate "the fossil of a new dinosaur" or "the fossilized bones of a new dinosaur". Most parts of an animal dead for millions of years don't survive that length of time, and those that do are usually transformed into something else, such as bones becoming fossilized into rock and minerals.

Megan's response is natural and expected in many situations when hearing of a person or creature experiencing misfortune. The humor here comes from the inaptness of asking the question millions of years after the event. Rather than responding to the ridiculousness of Megan's question, Cueball takes it seriously, and deadpans that he can't tell.

The title text suggests contacting its "{{w|next of kin}}", which usually means a nearest living relative, e.g. a brother or a sister, and if not, the parents. The process of identifying and contacting next of kin is a standard step performed by authorities in the event of a death being discovered. The reason for this step is to allow the next of kin to exercise their rights to the property of the deceased under inheritance law. In this case, non-avian dinosaurs are extinct{{Citation needed}}, so it is the job of {{w|Phylogenetics|phylogeneticist}}s (those who study evolutionary relationships) to determine which living animal (presumably a bird of some kind) is the "nearest relative" to the deceased dinosaurs. However, even if the correct species could be identified, the specific animal would be all but impossible to find. Statistically speaking, that dinosaur is almost certainly either {{w|Identical ancestors point|a direct ancestor of all living birds}}, [[1545|or else an ancestor of no living birds]].

==Transcript==
:[Megan is standing facing right, talking to Cueball who is sitting at a computer desk and also facing right, looking at a computer screen.]
:Cueball: Oh cool, they just found a dinosaur that was buried by a volcanic eruption 125 million years ago.
:Megan: Wow.

:[Pause. Megan is still facing right. Panel closes in on Megan and Cueball is not shown. This panel has no dialogue.]

:[Megan has stepped closer to Cueball, who leans in and is still looking at the screen.]
:Megan: Was it okay?
:Cueball: Hmm, it doesn't say.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Volcanoes]]
[[Category:Dinosaurs]]
[[Category:Biology]]

1346: Career

2024-02-14T21:23:27Z

WriterArtistCoder: Removed redundant sentence

{{comic
| number = 1346
| date = March 24, 2014
| title = Career
| image = career.png
| titletext = They'd convince me to come out of retirement for one last job: biting into a giant lump of slightly soft wax a couple of times.
}}

==Explanation==
[[Cueball]] is presumably asked to answer the typical {{w|Career counseling|career counselor}} question: What is your dream job? Rather than going with the more common answers that are designed to increase the chances of landing that particular job, Cueball talks about unrealistic jobs that are whimsical, and so well compensated that a little over one hour on the clock would provide enough wealth for a luxurious retirement; of course, you can have such a job only in your dreams. He makes jobs out of tasks that people do when they are bored, whether the tasks needed to be done or not. Therefore, if he did not get the job he probably would have done them at some point anyway.

Peeling lint off {{w|Clothes dryer#Tumbler dryers|dryer traps}} can relieve boredom, but it gets tedious soon, so Cueball wants to do that only for 5 minutes, followed by an hour of holding the handle of a {{w|lightsaber}} against things and switching it on. The energy emitted by this fictional weapon will probably burn, melt or cut the object it is touching as demonstrated in a scene from {{w|Star Wars Episode I: The Phantom Menace|Star Wars Episode I}}, where Jedi {{w|Qui-Gon Jinn}} uses his lightsaber to cut through a wall. Later, {{w| Star Wars: The Last Jedi}} turned out to demonstrate a lightsaber being placed against something before being switched on-- on the head of a Praetorian Guard. Obviously, it would be impossible to find a job like this, let alone one with a salary allowing one to retire to a life of luxury.{{Citation needed}}

The title text is poking fun at Hollywood films, particularly stories about violent professions (like mobsters, hitmen, detective or spies) where the hero is retired, but some unforeseen circumstance has forced them out of retirement to do "[http://tvtropes.org/pmwiki/pmwiki.php/Main/OneLastJob one last job]." Usually in these films, the jobs are overtly, improbably dangerous, often with the suggestion that they may lose their lives doing it, but the reward for doing the job (saving the world, a ton of cash, an unresolved/resolved debt) is just too great to refuse. However, in this comic the joke is that his "one last job" is also a mildly amusing task designed to relieve boredom.

An alternative explanation may be that these activities are very sensationally unique and satisfying for certain types of people, such as those with autism, and that this dream job is simply getting paid absurd amounts of money for something they wanted to do anyway.

==Transcript==
:[Cueball stands facing a desk, behind which another person is sitting in a desk chair.]
:Cueball: It would start with five minutes of peeling lint from dryer traps,
:Cueball: followed by an hour of pressing a lightsaber handle against things and switching it on.
:Cueball: Then I'd retire to a life of luxury.

:When people ask me to describe my dream job, I'm never sure how realistic to be.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Star Wars]]

1986: River Border

2024-01-07T22:25:26Z

WriterArtistCoder: Minor cleanup of one sentence

{{comic
| number = 1986
| date = April 27, 2018
| title = River Border
| image = river_border.png
| titletext = I'm not a lawyer, but I believe zones like this are technically considered the high seas, so if you cut a pizza into a spiral there you could be charged with pieracy under marinaritime law.
}}

==Explanation==
[[Ponytail]] explains to [[Megan]] that the Missouri-Nebraska state border is based on the {{w|Missouri River}} they are watching. And because the path of rivers mostly only changes slowly, these borders are typically adopted to that changes. But then she explains that the river once had changed abruptly by a {{w|meander cutoff}} and the border didn't move with it. That means that they are on a part of the Missouri side of the river that in fact belongs to Nebraska.

It then occurred to Megan that she could break the law in this area because she is under the mistaken impression that she is in Nebraska but the police can't reach her over the river and Missourian cops actually don't have jurisdiction. In fact, there are no bridges linking it to Nebraska so police would have to go through Missouri in order to get to that part of Nebraska.

It should be noted that there are real-world examples of strange border interactions that either create legal loopholes or make law enforcement difficult. A famous example, in the US, is a section of Yellowstone National Park that crosses over the Idaho border. [https://papers.ssrn.com/sol3/papers.cfm?abstract_id=691642 An article in the Georgetown Law Review] noted that, since the Park is a federal district, and juries must be selected from people living in the same state ''and'' federal district as the crime, the only qualified jurors would have to live in the Idaho section of the park, but that section has no permanent residents. In theory, then, any crimes committed on this patch of land could not be prosecuted. How this would work out in real life remains questionable, as there are no records of anyone being arrested for a crime in that region, but the law seems to have inadvertently created a zone in which laws cannot be enforced. (''What If? 2'' referenced this region.) Similarly, {{w|Bir Tawil}}, a region along the border between Egypt and Sudan, is claimed by neither country as a result of the {{w|Halaib Triangle}} border dispute, and thus crimes committed in the area would be unlikely to be prosecuted. Megan seems to mistakenly think something similar is in effect any time a state's border briefly crosses a river.

The final panel shows Megan saying she's going to cut a pizza into a spiral, which while unconventional is by no means illegal, and she runs off to commit more things she calls crimes, likely similar harmless acts.

In the title text, [[Randall]] claims/hypothesizes the disputed region is probably considered like the {{w|International waters|high seas}}, suggesting the pizza case would then fall under {{w|Admiralty law|maritime law}}. "Pieracy" is a portmanteau of ''pie'' (another name for a pizza) and "piracy"; and pizzas are frequently made with marinara sauce, so "Maritime" law is rendered "Marinaritime". This is most likely a reference to {{w|The Martian (film)|The Martian}}, in which it was noted that Mars is technically international waters as well.

The region mentioned in the comic can be seen here at [https://www.google.com/maps/@40.5270132,-95.6954944,10627m/ Google maps] and is known as {{w|McKissick Island}}. In 1904, the U.S. Supreme Court confirmed in Missouri v. Nebraska that a sudden change of a river's course does not change any border. See: [https://supreme.justia.com/cases/federal/us/196/23/case.html Missouri v. Nebraska, 196 U.S. 23 (1904)].

===Riverine Boundaries in Common Law and Surveying===
This strip is alluding to the concepts of 'accretion' and 'avulsion' in boundary law.

Accretion is the gradual change of the location of a river or stream by erosion or addition of sediment through natural river processes. According to common law in the United States and elsewhere, if a river or stream location changes gradually, then the boundary line moves with the stream. In cases of pure accretion, it is possible for a parcel of land to be entirely eroded away on one side of a river, and have material be added to the opposite side of the river. In such cases, one property owner could lose all their land.

An avulsion is a sudden change in the location of a river or stream, often due to flooding. In times of flood, a river can cut a new channel through surrounding land, which can create islands and oxbow lakes. According to common law, an avulsive change will not change the boundary of the land, as it is likely that the property is unchanged except for the new channel.

In the real world, however, river systems undergo both accretion and avulsion multiple times over a period of time. This makes the determination of property lines along riverine boundaries one of the most complicated aspects of boundary surveying. An examination of a river boundary will require in-depth research of the local history of the river, including reviewing deeds, government survey plats, private survey maps, aerial photos taken over time, local landowners recollections, and local lore. In situations where there is disagreement over whether an avulsive or accretive change happened, landowners may have to go to court for a suit to quiet title.

Further in-depth reading may be found in the US Bureau of Land Management's 2009 Manual of Surveying Instructions, Chapter 8, specifically pages 197-205. (See: [https://www.blm.gov/sites/blm.gov/files/Manual_Of_Surveying_Instructions_2009.pdf PDF (37.7 MByte)].)

=== Real-world examples ===
Often, borders defined by a river actually change. There are three methods to define a border:
*The border follows one of the river banks, often in reference to a low-water mark. The exact location of the border is defined in a clear way - but one of the territories will lose terrain through {{w|erosion}}. When the river bends, erosion occurs at the outer bank and much less at the inner bank.
*The border follows the middle of the river.
*The most usual definition of a riverine border uses the {{w|talweg}}. The talweg (German for "valley path") always follows the line of the deepest points in the water body. Especially at river bends, the talweg is rarely in the middle of the river. Incidentally, the talweg also signifies the navigable zone of a river. In terms of {{w|natural border}}s, one counterpart of a talweg is the {{w|drainage divide}}, but these divides are hard to recognize on a map and rarely used to define a real border.

The Mexican-US-Border that follows the Rio Grande is one of the most prominent examples of an international border that needs meticulous regulation. Thus, the {{w|International Boundary and Water Commission}} was created. This commission was involved when the two nations rectified the course of the river, ceding equal amounts of land to each other. The Canada-US-Border is overseen by a similar commission. There is also a strange section on the border to Canada, which Randall mentions in this comic: [[1902: State Borders]].

The border between Delaware and New Jersey veers from the median and talweg methods such that Delaware's border includes all the way to the New Jersey shore where the {{w|Delaware River}} is within what is known as the {{w|Twelve-Mile Circle}}.

One of the causes of the {{w|Iran-Iraq War}} was the dispute on shipping rights on the {{w|Shatt-el Arab river}}, and because the border was defined as the low water mark at the ''eastern'' side of that river, Iranian shipping was severely restricted. So the Shah of Persia announced to ignore the 1937 treaty on shipping rights, saying that most riverine borders all around the world are defined by the talweg.

Between Switzerland and Italy, the border is, at most locations, defined by the actual {{w|drainage divide}}. Because the {{w|Theodul Glacier}} between {{w|Zermatt}} (Switzerland) and {{w|Breuil-Cervinia}} (Italy) is slowly melting, the drainage divide moves southwards, thus slowly enlarging the Swiss territory.

Most other national borders in Europe are defined today as ''fiat borders'' instead of following natural landmarks like rivers. If a river changes course now, the depicted situation would occur; however, most larger rivers have been rectified more than a century ago and thus don't change course often.

==Transcript==
:[Ponytail and Megan are standing on a grassy riverbank, with the nearby part of the river shown above their heads. They are looking towards the river and Ponytail is gesturing at the river with her hand.]
:Ponytail: This is a cool spot.
:Ponytail: The Missouri-Nebraska state line follows this river. If the river's path changes gradually, the border moves with it.

:[A map is shown beneath the text spoken by Ponytail (off-panel). The map includes a bendy river shown in gray which is snaking its way from the left part of the panel down to the bottom. A dotted line indicates the old path of the river. It follows the gray river most of the way, but towards the bottom, this line moves away from the current river extending to north-east, including a large chunk of land that the river used to encompass previously. Two arrows point to the gray section of the river with the dotted line, and another arrow points to the section of the dotted line not following the gray section. Both are labeled. On each side of the dotted arc, where it is farthest from the gray part of the river the state names are labeled, so the text follows the direction of the river (almost north to south here).]
:Ponytail (narrating): But when it '''''abruptly''''' changes course, the border stays behind.
:Ponytail (narrating): This is a spot where that happened. We're on the Missouri side, but we're in Nebraska.
:River
:Old riverbed
:Nebraska
:Missouri

:[In a frame-less panel (with no background) Ponytail has turned to look at Megan who is holding a hand to her chin.]
:Megan: Wow.
:Megan: So...
:Megan: We can commit all the crimes we want here and the cops can't do a thing!

:[Megan runs away from Ponytail while she is holding her arm up in the air with a finger extended up.]
:Ponytail: What? No. Why would you even think that?
:Megan: I'm going to cut a pizza into a '''''spiral!'''''
:Ponytail: That's not even illegal!
:Megan: '''''Crimes!'''''

{{comic discussion}}

[[Category:Comics featuring Megan]]
[[Category:Comics featuring Ponytail]]
[[Category:Maps]]
[[Category:Geography]]

1986: River Border

2024-01-07T22:24:04Z

WriterArtistCoder: What If? 2 referenced Zone of Death

{{comic
| number = 1986
| date = April 27, 2018
| title = River Border
| image = river_border.png
| titletext = I'm not a lawyer, but I believe zones like this are technically considered the high seas, so if you cut a pizza into a spiral there you could be charged with pieracy under marinaritime law.
}}

==Explanation==
[[Ponytail]] explains to [[Megan]] that the Missouri-Nebraska state border is based on the {{w|Missouri River}} they are watching. And because the path of rivers mostly only changes slowly, these borders are typically adopted to that changes. But then she explains that the river once had changed abruptly by a {{w|meander cutoff}} and the border didn't move with it. That means that they are on a part of the Missouri side of the river that in fact belongs to Nebraska.

It then occurred to Megan that she could break the law in this area because she is under the mistaken impression that she is in Nebraska but the police can't reach her over the river and Missourian cops actually don't have jurisdiction. In fact, there are no bridges linking it to Nebraska so police would have to go through Missouri in order to get to that part of Nebraska.

It should be noted that there are real-world examples of strange border interactions that either create legal loopholes or make law enforcement difficult. A famous example, in the US, is a section of Yellowstone National Park that crosses over the Idaho border. [https://papers.ssrn.com/sol3/papers.cfm?abstract_id=691642 An article in the Georgetown Law Review] noted that, since the Park is a federal district, and juries must be selected from people living in the same state ''and'' federal district as the crime, the only qualified jurors would have to live in the Idaho section of the park, but that section has no permanent residents. In theory, then, any crimes committed on this patch of land could not be prosecuted. How this would work out in real life remains questionable, as there are no records of anyone being arrested for a crime in that region, but the law seems to have inadvertently created a zone in which laws cannot be enforced. (''What If? 2'' referenced this region.) Similarly, {{w|Bir Tawil}}, a region along the border between Egypt and Sudan, is claimed by neither country as a result of the {{w|Halaib Triangle}} border dispute, and thus crimes committed in the area would be unlikely to be prosecuted. Megan seems to mistakenly think something similar is in effect any time a state's border briefly crosses a river.

The final panel shows Megan saying she's going to cut a pizza into a spiral, which while unconventional is by no means illegal, and she runs off to commit more things she calls crimes, likely similar acts to cutting a pizza in an uncommon way.

In the title text, [[Randall]] claims/hypothesizes the disputed region is probably considered like the {{w|International waters|high seas}}, suggesting the pizza case would then fall under {{w|Admiralty law|maritime law}}. "Pieracy" is a portmanteau of ''pie'' (another name for a pizza) and "piracy"; and pizzas are frequently made with marinara sauce, so "Maritime" law is rendered "Marinaritime". This is most likely a reference to {{w|The Martian (film)|The Martian}}, in which it was noted that Mars is technically international waters as well.

The region mentioned in the comic can be seen here at [https://www.google.com/maps/@40.5270132,-95.6954944,10627m/ Google maps] and is known as {{w|McKissick Island}}. In 1904, the U.S. Supreme Court confirmed in Missouri v. Nebraska that a sudden change of a river's course does not change any border. See: [https://supreme.justia.com/cases/federal/us/196/23/case.html Missouri v. Nebraska, 196 U.S. 23 (1904)].

===Riverine Boundaries in Common Law and Surveying===
This strip is alluding to the concepts of 'accretion' and 'avulsion' in boundary law.

Accretion is the gradual change of the location of a river or stream by erosion or addition of sediment through natural river processes. According to common law in the United States and elsewhere, if a river or stream location changes gradually, then the boundary line moves with the stream. In cases of pure accretion, it is possible for a parcel of land to be entirely eroded away on one side of a river, and have material be added to the opposite side of the river. In such cases, one property owner could lose all their land.

An avulsion is a sudden change in the location of a river or stream, often due to flooding. In times of flood, a river can cut a new channel through surrounding land, which can create islands and oxbow lakes. According to common law, an avulsive change will not change the boundary of the land, as it is likely that the property is unchanged except for the new channel.

In the real world, however, river systems undergo both accretion and avulsion multiple times over a period of time. This makes the determination of property lines along riverine boundaries one of the most complicated aspects of boundary surveying. An examination of a river boundary will require in-depth research of the local history of the river, including reviewing deeds, government survey plats, private survey maps, aerial photos taken over time, local landowners recollections, and local lore. In situations where there is disagreement over whether an avulsive or accretive change happened, landowners may have to go to court for a suit to quiet title.

Further in-depth reading may be found in the US Bureau of Land Management's 2009 Manual of Surveying Instructions, Chapter 8, specifically pages 197-205. (See: [https://www.blm.gov/sites/blm.gov/files/Manual_Of_Surveying_Instructions_2009.pdf PDF (37.7 MByte)].)

=== Real-world examples ===
Often, borders defined by a river actually change. There are three methods to define a border:
*The border follows one of the river banks, often in reference to a low-water mark. The exact location of the border is defined in a clear way - but one of the territories will lose terrain through {{w|erosion}}. When the river bends, erosion occurs at the outer bank and much less at the inner bank.
*The border follows the middle of the river.
*The most usual definition of a riverine border uses the {{w|talweg}}. The talweg (German for "valley path") always follows the line of the deepest points in the water body. Especially at river bends, the talweg is rarely in the middle of the river. Incidentally, the talweg also signifies the navigable zone of a river. In terms of {{w|natural border}}s, one counterpart of a talweg is the {{w|drainage divide}}, but these divides are hard to recognize on a map and rarely used to define a real border.

The Mexican-US-Border that follows the Rio Grande is one of the most prominent examples of an international border that needs meticulous regulation. Thus, the {{w|International Boundary and Water Commission}} was created. This commission was involved when the two nations rectified the course of the river, ceding equal amounts of land to each other. The Canada-US-Border is overseen by a similar commission. There is also a strange section on the border to Canada, which Randall mentions in this comic: [[1902: State Borders]].

The border between Delaware and New Jersey veers from the median and talweg methods such that Delaware's border includes all the way to the New Jersey shore where the {{w|Delaware River}} is within what is known as the {{w|Twelve-Mile Circle}}.

One of the causes of the {{w|Iran-Iraq War}} was the dispute on shipping rights on the {{w|Shatt-el Arab river}}, and because the border was defined as the low water mark at the ''eastern'' side of that river, Iranian shipping was severely restricted. So the Shah of Persia announced to ignore the 1937 treaty on shipping rights, saying that most riverine borders all around the world are defined by the talweg.

Between Switzerland and Italy, the border is, at most locations, defined by the actual {{w|drainage divide}}. Because the {{w|Theodul Glacier}} between {{w|Zermatt}} (Switzerland) and {{w|Breuil-Cervinia}} (Italy) is slowly melting, the drainage divide moves southwards, thus slowly enlarging the Swiss territory.

Most other national borders in Europe are defined today as ''fiat borders'' instead of following natural landmarks like rivers. If a river changes course now, the depicted situation would occur; however, most larger rivers have been rectified more than a century ago and thus don't change course often.

==Transcript==
:[Ponytail and Megan are standing on a grassy riverbank, with the nearby part of the river shown above their heads. They are looking towards the river and Ponytail is gesturing at the river with her hand.]
:Ponytail: This is a cool spot.
:Ponytail: The Missouri-Nebraska state line follows this river. If the river's path changes gradually, the border moves with it.

:[A map is shown beneath the text spoken by Ponytail (off-panel). The map includes a bendy river shown in gray which is snaking its way from the left part of the panel down to the bottom. A dotted line indicates the old path of the river. It follows the gray river most of the way, but towards the bottom, this line moves away from the current river extending to north-east, including a large chunk of land that the river used to encompass previously. Two arrows point to the gray section of the river with the dotted line, and another arrow points to the section of the dotted line not following the gray section. Both are labeled. On each side of the dotted arc, where it is farthest from the gray part of the river the state names are labeled, so the text follows the direction of the river (almost north to south here).]
:Ponytail (narrating): But when it '''''abruptly''''' changes course, the border stays behind.
:Ponytail (narrating): This is a spot where that happened. We're on the Missouri side, but we're in Nebraska.
:River
:Old riverbed
:Nebraska
:Missouri

:[In a frame-less panel (with no background) Ponytail has turned to look at Megan who is holding a hand to her chin.]
:Megan: Wow.
:Megan: So...
:Megan: We can commit all the crimes we want here and the cops can't do a thing!

:[Megan runs away from Ponytail while she is holding her arm up in the air with a finger extended up.]
:Ponytail: What? No. Why would you even think that?
:Megan: I'm going to cut a pizza into a '''''spiral!'''''
:Ponytail: That's not even illegal!
:Megan: '''''Crimes!'''''

{{comic discussion}}

[[Category:Comics featuring Megan]]
[[Category:Comics featuring Ponytail]]
[[Category:Maps]]
[[Category:Geography]]

1985: Meteorologist

2024-01-07T22:17:40Z

WriterArtistCoder: More simplification

{{comic
| number = 1985
| date = April 25, 2018
| title = Meteorologist
| image = meteorologist.png
| titletext = Hi, I'm your new meteorologist and a former software developer. Hey, when we say 12pm, does that mean the hour from 12pm to 1pm, or the hour centered on 12pm? Or is it a snapshot at 12:00 exactly? Because our 24-hour forecast has midnight at both ends, and I'm worried we have an off-by-one error.
}}

==Explanation==
Although we’re constantly exposed to them, many (most?) people don’t understand the details of how to properly interpret weather forecasts. But even beyond the normal questions, there can be much more complex issues hiding beyond those (though most people will not care for those). This comic takes this to the ridiculous extreme of the weather reporters coming from some other profession where you look into those questions. It shows questions asked by three different people with different backgrounds: {{w|mathematics}}, {{w|linguistics}}, and (in the title text) {{w|software development}}. While some of those questions have actual answers (which you'd expect someone working in that job to know, such as the definition of "scattered showers" and how it's determined, what a "chance of rain" means, and so on), each professional finally ends up with questions that are almost disturbing in how they cannot be answered. (So management ends up calling security to remove those announcers.)

It should be pointed out that hiring someone without any meteorological training to read the weather does not make them an actual meteorologist, no more than say hiring a bricklayer as a doctor would actually make them a real doctor.

===Questions from the pure math meteorologist===

The first meteorologist, [[Cueball]], has a background in pure math. His forecast states that each of the next five hours has a 20% chance of rain. As a mathematician he sees how limited that information is. There is no information about whether or how those {{w|Probability|probabilities}} are {{w|Correlation|correlated}}. This becomes obvious if you ask the question "How likely is it to rain this afternoon" (a question even some non-mathematicians might be interested in). [[Cueball]] states that he does not know (as no one only getting the information about 20% rain in each hour can know). And then lists some scenarios that all fit the the description, but have totally different results for "How likely is it to rain this afternoon?"

The first thing a mathematician would ask (and [[Cueball]] does here) is asking if those 5 events are {{w|Independence (probability theory)|independent}}. Events are independent if the outcome of one of them is unrelated to the outcome out of the others, i.e. knowing whether it rained at 3 pm has no effect on whether it rains at 4 pm, in which case the probability of any rain over the 5 hours is 1 − (1 − 0.2)<sup>5</sup> = 67.2%. (Rain is very seldom independent, as usually having rain in one hour increases the chance to rain in another hour, as systems of rainy weather usually persist for many hours). Another common extreme in probability theory is a set of {{w|Mutual exclusivity|mutually exclusive}} events. In this example that would be the scenario that the chance of rain is 5 × 20% = 100%, but it will only rain in exactly one hour and not rain at all for the other four. (Also possible but quite unlikely). This is what the mathematician was referring to by, "Is rain guaranteed and we're just unsure of the timing?"

In the second panel he continues to discuss what scattered showers means. Like most of the other weather terms in this comic, the term "scattered showers" is one whose technical definition is largely unknown but appears simple enough that most people would assume they understand what it means. "Scattered" refers to when the rain covers roughly 30–50% of the area at a given moment. To somebody who doesn't know this, like the first meteorologist, there's still the very valid question of how likely it is to rain in a specific spot (is it 30–50% of the total probability, or is it more than that because showers move and sweep out a larger area?), and how this is affected by the previous chance of rain. Not to mention, the percentage that defines "scattered showers" implicitly assumes a surface area that is accounted into the percent. Cueball rightly asks clarification on how large the location used to determine "scattered showers" is.

While the all but the last question of the first part of the second panel can be answered by looking up their definitions, the last one is "What if you have two locations you are worried about?" This is an extremely complex question. Because there is no chance at all to answer this question from the answers of the previous questions or even from most other data a forecast might usually produce. To answer this you'd need the raw data from the ensemble forecast in order to specifically look at the correlation between weather at those two locations. Simply looking at the averaged result won't help.

Finally in that panel Cueball begins to explain that he has asked the management about these things, but that they have stopped replying to his e-mails. At this point he spots the security guy coming over, and the screen goes black in to a technical difficulty screen that excuses this behavior to the viewers. It is implied that the security guy came over to force Cueball to leave the set, because he has been fired for confusing the viewers.

Questioning these things on air is likely confusing to the viewers, although they are all valid questions. But this may lose viewers and the news network is afraid of this. The technical difficulty panel further cements this, apologizing for hiring a person with a pure math background. Often seen as one that do not understand how to talk to regular people.

===Questions from the linguist meteorologist===

When they get back on air, the new meteorologist [[Blondie]] steps in. The management enquires (on air) to make sure she is not also a mathematician. She denies this but adds that she does have a linguistics degree, which the management thinks is fine, and thus believes they have prevented the same problem. However, Blondie quickly proves them wrong, as she goes into a linguistic tangent about the true meaning of the word "it" as referring to the weather. After one panel of this the management calls for security again.

While, at the most basic level, human speech is broken into subject, object, and verb; for some reason in English we are capable of producing and comprehending speech without objects or verbs, but there is a certain "resistance" to speech without a subject. If you were in the passenger seat of a car and spotted some deer nearby, you could simply say "Deer." rather than "There is a deer over there", deer being the subject of the sentence. However, if you noticed that it had begun to rain, you could not simply say "Raining." on its own. Feel how that sentence just seems weird? Hence we have developed the tendency to use the filler word "it"; despite the fact that when we say "It's raining.", the "it" is not a reference to the clouds producing the rain, but the general state of the rainfall around us. (McWhorter, John. Understanding Linguistics: The Science of Language. https://www.thegreatcourses.com/courses/understanding-linguistics-the-science-of-language.html)

The first question is again quite harmless, and both possible answers ("it" being a {{w|dummy pronoun}} or referring to the weather) are valid answers, but the second question is much more disturbing.
In "It's hot out, and getting bigger" the first part of the sentence might be a dummy pronoun or it might reference the weather. But the second part breaks it: With a dummy pronoun "getting bigger" would be the impersonal action, which is not what is meant. It is referencing something (the hotness, that is getting bigger). But if the it references this entity in the second part, by grammatical rules it would also have to reference that in the first part. But "The hotness is hot out" makes no sense at all. (An alternative explanation is that the sentence is referring to the fact that if a dark (so as to absorb light energy from sunlight and convert it to thermal energy) object is placed outside in sunlight, it will heat up and undergo thermal expansion.)
This is again a common occurrence with informal speech: From a grammatical point of view, it is pure non-sense. But it still has meaning people understand. So if you want a proper descriptive grammar, it needs to cope with those cases. But then most such informal sentences would be special cases. (Case in point: What is the grammatical function of the "out" in that sentence?)

===Questions from the software developer meteorologist===

In the title text, the news station has made the same error once more by hiring a software developer. The developer states concerns about the feasibility of the time system used to correlate to the weather patterns. Labels like "12pm" or "1pm" appear simple and clear, but because developers frequently have to deal with what these labels mean ''exactly'', the new meteorologist begins to wonder what time period is actually meant on a per-hour forecast. Does 12pm refer to the hour from 12 to 1pm, from 11:30am to 12:30pm, or only to the weather precisely at noon?

The software developer also worries about an {{w|off-by-one error}}, which is a common error in software development which occurs when boundary conditions include one element too few or too many. For example, when counting by 24 once every set period, it is common to forget whether the count should stop at 23 or at 24, especially if the number 0 (midnight) is included. In the 24-hour forecast, this means that there would be 25 hours represented every day, and these extra hours would add up and put the forecast one more hour off with each progressive day.

This worry is probably absurd because the inaccuracies would quickly build up and be noticed, and even if they weren't, the time would eventually be further into the future than the forecast models could supply. At least these concerns are less inane than the previous meterologists', but they are all things the developer should have asked ''before'' they went on the air.

===Answering the meteorologists’ questions===

Management would certainly answer the mathematician's questions! The questions themselves have been asked of meteorologists before. The National Weather Service (NWS), a unit of the United States National Oceanic and Atmospheric Administration (NOAA), has published relevant answers for [https://www.weather.gov/ffc/pop probability of precipitation], as well as [https://www.weather.gov/bgm/forecast_terms timing and the meanings of particular forecast words]. The naming is also addressed [https://www.weather.gov/media/ajk/brochures/ConvectivevsStratiform.pdf here].

Regarding probability of precipitation, NOAA forecasts give the probability that it will rain at all at any given point in an area. To rephrase it, it is the probability of rain occurring '''at all''' within a forecast area multiplied by the percentage of area affected by the rain. The "forecast area" is a clearly defined area of land and can be seen in the map of any official NWS forecast. [https://forecast.weather.gov/MapClick.php?lat=34.0732&lon=-118.3963 Here is an example].

Regarding the timing of the forecast, an hourly forecast gives the probability for each particular hour, stretching from the time listed to right before the next hour listed. So, the forecast for noon describes the time period from noon to 1pm. The forecasts for individual hours can be correlated; for this reason, the NOAA generates forecasts that stretch over longer time periods, giving a useful estimate for that time range. Thus, the chance of rain for "Today" specifically means: what is the chance of it raining at any given location during any time between 6am and 6pm?

Regarding phrases like "scattered showers", this specifically means a 25-54% probability of precipitation from convective cloud sources. Other phrases, and when they are used, are detailed in [https://www.weather.gov/media/ajk/brochures/ConvectivevsStratiform.pdf the chart at the end of this PDF].

So, to conclude:

* "How likely is it to rain this afternoon?" We don't know; you need to show the hourly forecast, not the 12 noon to 4pm forecast.
* "Is each hour independent? Correlated?" Hourly values are given for that hour only. They can be correlated, hence why they can't be used to calculate the answer to "How likely is it to rain this afternoon?"
* "Is rain guaranteed and we're just unsure of the timing?" You cannot tell from the data given. It's possible (though unlikely), that this is the case.
* "It says 'scattered showers.' Is this the chance of rain '''somewhere''' in your area?" Yes, it is, and it means the the rain will come from convective cloud sources with a probability of precipitation somewhere between 25 and 54%.
* "How big is your area?" It's detailed in the forecast the mathematician would be reading from.
* "What if you have two locations you're worried about?" Then all chances are off. While the other open questions like "How likely is it to rain this afternoon?" might have an answer management could supply, for this they do not really have any chance at all.
* "Hey, when we say 12pm, does that mean the hour from 12pm to 1pm, or the hour centered on 12pm? Or is it a snapshot at 12:00 exactly?" It means the hour from noon to 12:59pm.
* We have been effectively [[356|nerd-sniped]].

==Transcript==
:[Cueball is presenting a weather forecast while seated with his folded hands resting on a table. A graphic to the left of Cueball shows the weather for five consecutive hours from 12pm to 4pm, each with a rainy cloud icon and the same percentage of 20% written below the icon. The TV channel's logo is shown on the bottom left, with the 4 in a white font inside a black circle.]
:Cueball: Our forecast says there's a 20% chance of rain for each of the next five hours.
:Cueball: How likely is it to rain this afternoon? It's a simple question, but I don't know the answer. Is each hour independent? Correlated? Or is rain guaranteed and we're just unsure of the timing?

:12pm  1pm  2pm  3pm  4pm
:  20%  20%  20%  20%  20% 
:<small>News</small>
:  4
:<small>''Weather''</small>

:[Cueball still sits at the table, but the weather graphic is gone and he looks to the right.]
:Cueball: It says "scattered showers." Is this the chance of rain '''''somewhere''''' in your area? How big is your area? What if you have two locations you're worried about?
:Cueball: I've asked management, but they've stopped answering my emails, so—Hang on, the security guy is coming over.

:[A black screen is shown with white text and two short white lines between each of the three segments of text. The TV logo is shown below the last text, with the white 4 inside a gray circle with a white border.]
:''Technical Difficulties''
:—
:''We apologize for hiring a meteorologist with a pure math background.''
:—
:''We'll be back on the air shortly.''
:
:<big>News</big>
:  <big><big>4</big></big>

:[Blondie now sits at the desk, in the same position as Cueball, but without the graphic. She looks to the right towards a person who speaks to her from outside the panel. This voice is indicated with two square speech bubbles, connected with a double line and with a small arrow pointing to the right off-panel from the top bubble.]
:Blondie: Sorry about that. Hi, I'm your new meteorologist.
:Person off-panel: And you're not a mathematician, right?
:Blondie: No. I do have a linguistics degree.
:Person off-panel: That's fine.

:[Blondie continues in the same position but now looks into the camera at the viewers. The off-panel person only speaks one word, which again is inside a square speech bubble with a small arrow pointing to the right off-panel.]
:Blondie: It might rain this afternoon.
:Blondie: But what is "it" here? Is it a true dummy pronoun, as in the phrase "It's too bad?" Or is the weather an entity?
:Blondie: Also, what if I say, "It's hot out, and getting bigger?"
:Person off-panel: Security!

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Blondie]]
[[Category:News anchor]]
[[Category:Weather]]
[[Category:Statistics]]
[[Category:Language]]
[[Category:Programming]]

1985: Meteorologist

2024-01-07T21:59:49Z

WriterArtistCoder: Greatly simplified, added line breaks for clarity

{{comic
| number = 1985
| date = April 25, 2018
| title = Meteorologist
| image = meteorologist.png
| titletext = Hi, I'm your new meteorologist and a former software developer. Hey, when we say 12pm, does that mean the hour from 12pm to 1pm, or the hour centered on 12pm? Or is it a snapshot at 12:00 exactly? Because our 24-hour forecast has midnight at both ends, and I'm worried we have an off-by-one error.
}}

==Explanation==
Although we’re constantly exposed to them, many (most?) people don’t understand the details of how to properly interpret weather forecasts. But even beyond the normal questions, there can be much more complex issues hiding beyond those (though most people will not care for those). This comic takes this to the ridiculous extreme of the weather reporters coming from some other profession where you look into those questions. It shows questions asked by three different people with different backgrounds: {{w|mathematics}}, {{w|linguistics}}, and (in the title text) {{w|software development}}. While some of those questions have actual answers (which you'd expect someone working in that job to know, such as the definition of "scattered showers" and how it's determined, what a "chance of rain" means, and so on), each professional finally ends up with questions that are almost disturbing in how they cannot be answered. (So management ends up calling security to remove those announcers.)

It should be pointed out that hiring someone without any meteorological training to read the weather does not make them an actual meteorologist, no more than say hiring a bricklayer as a doctor would actually make them a real doctor.

===Questions from the pure math meteorologist===

The first meteorologist, [[Cueball]], has a background in pure math. His forecast states that each of the next five hours has a 20% chance of rain. As a mathematician he sees how limited that information is. There is no information about whether or how those {{w|Probability|probabilities}} are {{w|Correlation|correlated}}. This becomes obvious if you ask the question "How likely is it to rain this afternoon" (a question even some non-mathematicians might be interested in). [[Cueball]] states that he does not know (as no one only getting the information about 20% rain in each hour can know). And then lists some scenarios that all fit the the description, but have totally different results for "How likely is it to rain this afternoon?"

The first thing a mathematician would ask (and [[Cueball]] does here) is asking if those 5 events are {{w|Independence (probability theory)|independent}}. Events are independent if the outcome of one of them is unrelated to the outcome out of the others, i.e. knowing whether it rained at 3 pm has no effect on whether it rains at 4 pm, in which case the probability of any rain over the 5 hours is 1 − (1 − 0.2)<sup>5</sup> = 67.2%. (Rain is very seldom independent, as usually having rain in one hour increases the chance to rain in another hour, as systems of rainy weather usually persist for many hours). Another common extreme in probability theory is a set of {{w|Mutual exclusivity|mutually exclusive}} events. In this example that would be the scenario that the chance of rain is 5 × 20% = 100%, but it will only rain in exactly one hour and not rain at all for the other four. (Also possible but quite unlikely). This is what the mathematician was referring to by, "Is rain guaranteed and we're just unsure of the timing?"

In the second panel he continues to discuss what scattered showers means. Like most of the other weather terms in this comic, the term "scattered showers" is one whose technical definition is largely unknown but appears simple enough that most people would assume they understand what it means. "Scattered" refers to when the rain covers roughly 30–50% of the area at a given moment. To somebody who doesn't know this, like the first meteorologist, there's still the very valid question of how likely it is to rain in a specific spot (is it 30–50% of the total probability, or is it more than that because showers move and sweep out a larger area?), and how this is affected by the previous chance of rain. Not to mention, the percentage that defines "scattered showers" implicitly assumes a surface area that is accounted into the percent. Cueball rightly asks clarification on how large the location used to determine "scattered showers" is.

While the all but the last question of the first part of the second panel can be answered by looking up their definitions, the last one is "What if you have two locations you are worried about?" This is an extremely complex question. Because there is no chance at all to answer this question from the answers of the previous questions or even from most other data a forecast might usually produce. To answer this you'd need the raw data from the ensemble forecast in order to specifically look at the correlation between weather at those two locations. Simply looking at the averaged result won't help.

Finally in that panel Cueball begins to explain that he has asked the management about these things, but that they have stopped replying to his e-mails. At this point he spots the security guy coming over, and the screen goes black in to a technical difficulty screen that excuses this behavior to the viewers. It is implied that the security guy came over to force Cueball to leave the set, because he has been fired for confusing the viewers.

Questioning these things on air is likely confusing to the viewers, although they are all valid questions. But this may lose viewers and the news network is afraid of this. The technical difficulty panel further cements this, apologizing for hiring a person with a pure math background. Often seen as one that do not understand how to talk to regular people.

===Questions from the linguist meteorologist===

When they get back on air again a new meteorologist, [[Blondie]], steps in. The management enquires (on air) to make sure she is not also a mathematician. She states no, but tells that she has a linguistics degree, which the management thinks is fine, and thus believes they have prevented the problem with Cueball. However, this proves to be in vain, as Blondie goes into a tangent once more but from a linguistics standpoint, rather than a mathematical one, detailing the true meaning of the word "it" as referring to the weather. After one panel of this the management calls for security again.

While, at the most basic level, human speech is broken into subject, object, and verb; for some reason we are capable of producing and comprehending speech without both objects or verbs, but in English there is a certain "resistance" to speech without a subject. Thus if you are in the passenger seat of a car going down the highway and happened to see some deer in the trees nearby, you could simply say "Deer.", rather than "there is a deer over there", deer being the subject of the sentence. However, if you noticed that it had begun to rain, you could not simply say "Raining." on its own. Feel how that sentence just seems weird? Hence we have developed the tendency to use the filler word "it" despite the fact that when we say "It's raining." the "it" is not a reference to the clouds producing the rain, but the general state of the rainfall around us. (McWhorter, John. Understanding Linguistics: The Science of Language. https://www.thegreatcourses.com/courses/understanding-linguistics-the-science-of-language.html )

The first question is again quite harmless, and both possible answers ("it" being a {{w|dummy pronoun}} or referring to the weather) are valid answers, but the second question is much more disturbing.
In "It's hot out, and getting bigger" the first part of the sentence might be a dummy pronoun or it might reference the weather. But the second part breaks it: With a dummy pronoun "getting bigger" would be the impersonal action, which is not what is meant. It is referencing something (the hotness, that is getting bigger). But if the it references this entity in the second part, by grammatical rules it would also have to reference that in the first part. But "The hotness is hot out" makes no sense at all. (An alternative explanation is that the sentence is referring to the fact that if a dark (so as to absorb light energy from sunlight and convert it to thermal energy) object is placed outside in sunlight, it will heat up and undergo thermal expansion.)
This is again a common occurrence with informal speech: From a grammatical point of view, it is pure non-sense. But it still has meaning people understand. So if you want a proper descriptive grammar, it needs to cope with those cases. But then most such informal sentences would be special cases. (Case in point: What is the grammatical function of the "out" in that sentence?)

===Questions from the software developer meteorologist===

In the title text, the news station has made the same error once more by hiring a software developer. The developer states concerns about the feasibility of the time system used to correlate to the weather patterns. Labels like "12pm" or "1pm" appear simple and clear, but because developers frequently have to deal with what these labels mean ''exactly'', the new meteorologist begins to wonder what time period is actually meant on a per-hour forecast. Does 12pm refer to the hour from 12 to 1pm, from 11:30am to 12:30pm, or only to the weather precisely at noon?

The software developer also worries about an {{w|off-by-one error}}, which is a common error in software development which occurs when boundary conditions include one element too few or too many. For example, when counting by 24 once every set period, it is common to forget whether the count should stop at 23 or at 24, especially if the number 0 (midnight) is included. In the 24-hour forecast, this means that there would be 25 hours represented every day, and these extra hours would add up and put the forecast one more hour off with each progressive day.

This worry is probably absurd because the inaccuracies would quickly build up and be noticed, and even if they weren't, the time would eventually be further into the future than the forecast models could supply. At least these concerns are less inane than the previous meterologists', but they are all things the developer should have asked ''before'' they went on the air.

===Answering the meteorologists’ questions===

Management would certainly answer the mathematician's questions! The questions themselves have been asked of meteorologists before. The National Weather Service (NWS), a unit of the United States National Oceanic and Atmospheric Administration (NOAA), has published relevant answers for [https://www.weather.gov/ffc/pop probability of precipitation], as well as [https://www.weather.gov/bgm/forecast_terms timing and the meanings of particular forecast words]. The naming is also addressed [https://www.weather.gov/media/ajk/brochures/ConvectivevsStratiform.pdf here].

Regarding probability of precipitation, NOAA forecasts give the probability that it will rain at all at any given point in an area. To rephrase it, it is the probability of rain occurring '''at all''' within a forecast area multiplied by the percentage of area affected by the rain. The "forecast area" is a clearly defined area of land and can be seen in the map of any official NWS forecast. [https://forecast.weather.gov/MapClick.php?lat=34.0732&lon=-118.3963 Here is an example].

Regarding the timing of the forecast, an hourly forecast gives the probability for each particular hour, stretching from the time listed to right before the next hour listed. So, the forecast for noon describes the time period from noon to 1pm. The forecasts for individual hours can be correlated; for this reason, the NOAA generates forecasts that stretch over longer time periods, giving a useful estimate for that time range. Thus, the chance of rain for "Today" specifically means: what is the chance of it raining at any given location during any time between 6am and 6pm?

Regarding phrases like "scattered showers", this specifically means a 25-54% probability of precipitation from convective cloud sources. Other phrases, and when they are used, are detailed in [https://www.weather.gov/media/ajk/brochures/ConvectivevsStratiform.pdf the chart at the end of this PDF].

So, to conclude:

* "How likely is it to rain this afternoon?" We don't know; you need to show the hourly forecast, not the 12 noon to 4pm forecast.
* "Is each hour independent? Correlated?" Hourly values are given for that hour only. They can be correlated, hence why they can't be used to calculate the answer to "How likely is it to rain this afternoon?"
* "Is rain guaranteed and we're just unsure of the timing?" You cannot tell from the data given. It's possible (though unlikely), that this is the case.
* "It says 'scattered showers.' Is this the chance of rain '''somewhere''' in your area?" Yes, it is, and it means the the rain will come from convective cloud sources with a probability of precipitation somewhere between 25 and 54%.
* "How big is your area?" It's detailed in the forecast the mathematician would be reading from.
* "What if you have two locations you're worried about?" Then all chances are off. While the other open questions like "How likely is it to rain this afternoon?" might have an answer management could supply, for this they do not really have any chance at all.
* "Hey, when we say 12pm, does that mean the hour from 12pm to 1pm, or the hour centered on 12pm? Or is it a snapshot at 12:00 exactly?" It means the hour from noon to 12:59pm.
* We have been effectively [[356|nerd-sniped]].

==Transcript==
:[Cueball is presenting a weather forecast while seated with his folded hands resting on a table. A graphic to the left of Cueball shows the weather for five consecutive hours from 12pm to 4pm, each with a rainy cloud icon and the same percentage of 20% written below the icon. The TV channel's logo is shown on the bottom left, with the 4 in a white font inside a black circle.]
:Cueball: Our forecast says there's a 20% chance of rain for each of the next five hours.
:Cueball: How likely is it to rain this afternoon? It's a simple question, but I don't know the answer. Is each hour independent? Correlated? Or is rain guaranteed and we're just unsure of the timing?

:12pm  1pm  2pm  3pm  4pm
:  20%  20%  20%  20%  20% 
:<small>News</small>
:  4
:<small>''Weather''</small>

:[Cueball still sits at the table, but the weather graphic is gone and he looks to the right.]
:Cueball: It says "scattered showers." Is this the chance of rain '''''somewhere''''' in your area? How big is your area? What if you have two locations you're worried about?
:Cueball: I've asked management, but they've stopped answering my emails, so—Hang on, the security guy is coming over.

:[A black screen is shown with white text and two short white lines between each of the three segments of text. The TV logo is shown below the last text, with the white 4 inside a gray circle with a white border.]
:''Technical Difficulties''
:—
:''We apologize for hiring a meteorologist with a pure math background.''
:—
:''We'll be back on the air shortly.''
:
:<big>News</big>
:  <big><big>4</big></big>

:[Blondie now sits at the desk, in the same position as Cueball, but without the graphic. She looks to the right towards a person who speaks to her from outside the panel. This voice is indicated with two square speech bubbles, connected with a double line and with a small arrow pointing to the right off-panel from the top bubble.]
:Blondie: Sorry about that. Hi, I'm your new meteorologist.
:Person off-panel: And you're not a mathematician, right?
:Blondie: No. I do have a linguistics degree.
:Person off-panel: That's fine.

:[Blondie continues in the same position but now looks into the camera at the viewers. The off-panel person only speaks one word, which again is inside a square speech bubble with a small arrow pointing to the right off-panel.]
:Blondie: It might rain this afternoon.
:Blondie: But what is "it" here? Is it a true dummy pronoun, as in the phrase "It's too bad?" Or is the weather an entity?
:Blondie: Also, what if I say, "It's hot out, and getting bigger?"
:Person off-panel: Security!

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Blondie]]
[[Category:News anchor]]
[[Category:Weather]]
[[Category:Statistics]]
[[Category:Language]]
[[Category:Programming]]

1006: Sloppier Than Fiction

2023-11-07T07:11:18Z

WriterArtistCoder: Minor spelling

{{comic
| number = 1006
| date = January 20, 2012
| title = Sloppier Than Fiction
| image = sloppier_than_fiction.png
| titletext = Roger Ebert once called you directionless and unwatchable.
}}

==Explanation==
In this strip, Goatee Guy claims that "if they made my life into a movie, no one would believe it", suggesting that he thinks his experiences are so unlikely and interesting that they'd be considered too exaggerated for fiction.

Cueball agrees that no one would believe the movie, but claims that it's due to "the poorly written dialogue and unlikeable main character", turning the claim into a put-down of Goatee Guy. This response has two main aspects: that the events Goatee Guy is describing aren't especially well-told, and that Goatee Guy himself is personally unpleasant (in addition to not be especially articulate, or conveying a rambling anecdote as meaningful as he believes them to be).

From what little we hear of Goatee Guy's story, both of those assumptions seem to be justified. The crux of his story is that his ex-girlfriend had once dated an acquaintance of his, which is not a particularly uncommon or interesting event. Absent a more interesting twist (or at least some interesting storytelling), it constitutes a mild coincidence, not something particularly noteworthy, let along implausible.

And the little we know about Goatee Guy helps explain why Cueball finds him unlikeable. He did something that he claims "technically ''wasn't'' cheating", which implies that he was unfaithful, and tried to justify himself with a loophole. Then he went around telling the story to others, apparently blaming his ex, rather than himself, and repeats Bret characterizing her as "crazy". All of these things make him sound boorish, rude, self-centered, and misogynistic.

The title is a play on the old saying that "truth is stranger than fiction." In this case, the title implies that Goatee Guy's story isn't stranger than fiction, but is a sloppy enough story that it wouldn't qualify as good fiction.

In the title text, {{w|Roger Ebert}} was a famous American {{w|movie critic}}, who could be quite caustic when reviewing a movie he disliked. "Directionless" and "unwatchable", along with Cueball's initial complaints of "poorly-written dialogue and unlikeable main character," are common criticisms of bad movies, but have entirely different and much more personally cutting connotations when applied to a human being.

==Transcript==
:[A douchebag with a goatee and a bad haircut talks to Cueball while holding a drink.]
:Goatee Guy: Even though it technically ''wasn't'' cheating, she dumped me anyway! So I tell Bret, and he's like "She sounds just like ''my'' crazy ex." And I was like, "dude, what was her name?" and it was the ''same girl.''
:Goatee Guy: I swear, if they made my life into a movie, no one would believe it.
:Cueball: Yeah, though mostly because of the poorly-written dialogue and unlikeable main character.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Sex]]

1962: Generations

2023-10-31T04:41:00Z

WriterArtistCoder: Deleted iGen - Gen Z is now firmly the name for those after millenials

{{comic
| number = 1962
| date = March 2, 2018
| title = Generations
| image = generations.png
| titletext = For a while it looked like the Paperclip Machines would destroy us, since they wanted to turn the whole universe into paperclips, but they abruptly lost interest in paperclips the moment their parents' generation got into making them, too.
}}

==Explanation==
This comic is making fun of the various names we give "generations" while also predicting some future names. The release of this comic coincides with the [http://www.pewresearch.org/fact-tank/2018/03/01/defining-generations-where-millennials-end-and-post-millennials-begin/ Pew Research Center's recent announcement that they have decided where the Millennial generation ends].

Each generation listed is exactly 18 years long, which is the approximate length of each "generation" anyway (given that coincidentally, there are exactly 54 intermediate years between the end of World War II and the New Millennium). A number of the entries are parodies of the terms "Generation X," "Generation Y," etc., by substituting other letters or characters that would seem emblematic of the time period.

{| class="wikitable"
|-
! scope="col"| Generation
! scope="col"| Time period
! scope="col"| Explanation
|-
| The Founders
| 1730 - 1747
| Most of the {{w|Founding Fathers of the United States|United States' Founding Fathers}} were born in this period. (But not all: Benjamin Franklin, for instance, was born two generations prior, in 1706.)
|-
| Generation ƒ
| 1748 - 1765
| ƒ was used to represent {{w|Long s|"long s"}} in the typography used in Colonial America. It can be seen in many historical documents from the period. It is also the symbol that represented the {{w|Dutch guilder|guilder}}, the currency of the Netherlands from the 17th century until 2002. It has a notable similarity to letter "esh" ʃ. Depicted symbol is also used in mathematical expressions as in <math>f(x)</math>. One of the first and most complete works on both infinitesimal and integral calculus was written in 1748 by Maria Gaetana Agnesi.
|-
| The Adequate Generation
| 1766 - 1783
| Randall apparently found nothing notable about this generation, positive or negative. This is a reference to the Greatest Generation, below.
|-
| Generation Æ
| 1784 - 1801
| Æ is the {{w|Æ|ligature}} Aesh (Now called ash) - its name sounds like X, though it is pronounced as a long e or IPA /æ/. This character is commonly transcribed differently into British English and American English as ae and e respectively making a difference in spelling in words such as encyclopaedia/encylopedia. One of the key influences on this is Webster's dictionary, first published 1828. The ash symbol is also referenced in [[2763: Linguistics Gossip|this comic]].
|-
| The generation we cut a lot of slack because they produced Lincoln
| 1802 - 1819
| {{w|Abraham Lincoln}} was born in 1809, and is regarded as one of the best presidents of all time. The comic states that the other people born in this generation were "cut a lot of slack" because of him. As with the Oops, one of us is Hitler generation, it is absurd to define an entire generation by defining its most famous member.
|-
| The Gilded Generation
| 1820 - 1837
| {{w|Gilded Generation (Strauss–Howe theory)| So named under the Strauss-Howe generation theory}}, though they use the time period 1822-1842 instead. This likely refers to the "{{w|Gilded Age}}" of American history, roughly the last three decades of the 19th century.
|-
| The Second-Greatest Generation
| 1838 - 1855
|
This is a reference to the Greatest Generation, below, and could be implying a similarity between the accomplishments and sacrifices of this generation - who fought in the U.S. Civil War and who passed the 13th, 14th, and 15th Amendments to the U.S. Constitution - to those of the Greatest Generation. There is also some humor in the name: what Randall means is that this generation was, supposedly, second best in terms of its greatness. However, the wording could be interpreted to mean that they are chronologically the second generation to be called "greatest", even though they actually were born first.
|-
| Generation – • • –
| 1856 - 1873
| – • • – is the letter X in {{w|Morse_code|International Morse Code}}. This is an old-timey version of Gen Xers, mirrored by the later "More Gen-Xers somehow." This is also a reference to the rise of {{w|telegraphy}}, popular during this time period.
|-
| The kids who died in the Gilded Generation's factories and mines
| 1874 - 1891
| {{w|Child labour #The Industrial Revolution|Child labor}} had been widely used since before the start of the Industrial Revolution, but this is when people started doing something about it - and also, when the need for an educated workforce arose, applying substantial economic pressure on societies to put children in school instead. It would be more accurate to label this generation, "The kids who stopped dying in the Gilded Generation's factories and mines".
|-
| Oops, one of us is Hitler
| 1892 - 1909
| {{w|Adolf Hitler}}, possibly the most hated (and, by most definitions, evil) man in living human memory as of this comic's posting, {{w|Adolf_Hitler#Early_years|was born in 1889}}. Aside from the fact that this places him in the previous generation, it seems beyond silly to blame everyone else who was born during this period for being born in the same generation as him. Among those who eventually heard of him (thus, excluding those in isolated areas or who died before he rose to power), the vast majority of them would not hear of him until well after 1909. In reality, this generation is known as the {{w|Lost Generation}}, though the dates are somewhat skewed.
|-
| {{w|The Greatest Generation}}
| 1910 - 1927
| Named by journalist {{w|Tom Brokaw}} in 1998 in {{w|The Greatest Generation|a book of the same name}}, this is the first generation on the list to have a real, commonly accepted name, and was named as such due to being the generation that survived the hardships of the {{w|Great Depression}} immediately before being drafted to fight in {{w|World War II}}.
|-
| {{w|The Silent Generation}}
| 1928 - 1945
| Coined by Time Magazine in 1951, the Silent Generation grew up during a time of paranoia and very little activism due to phenomena such as {{w|McCarthyism}} making it dangerous to speak out.
|-
| {{w|Baby Boomers}}
| 1946 - 1963
| A spike in births was seen following the return of soldiers to the US from European and Pacific theatres of war. These children enjoyed the benefits of US prosperity whilst the rest of the world rebuilt, lived in fear of nuclear annihilation and watched the Space Race.
|-
| {{w|Generation X}}
| 1964 - 1981
| "X" here refers to an unknown or undefined element, not specifically a placement in the alphabet as Y and Z (see below) seem to imply, and was used throughout history to refer to alienated youth in general as early as the 1950s, with the name sticking to this one thanks to Douglas Coupland's 1991 novel. Generation X's time period was one of sweeping societal change and rapid technological advancement.
|-
| {{w|Millennials}}
| 1982 - 1999
| The last children born in the 2nd Millennium. Initially called Generation Y, after Generation X.
|-
| Generation 💅
(nail-polish emoji)
| 2000 - 2017
| This begins the hypothetical future generation names, though this generation was already fully born as of this comic's posting. Social media was established and rising during the formative years of this generation, and the widespread adoption of emoji began during this time. The [https://emojipedia.org/nail-polish/ Nail Polish Emoji] (U+1F485) is used here. It is currently known in reality as {{w|Generation Z}}, though the comic implies it may change due to emojis ultimately replacing the alphabet entirely.
|-
| Zuckerberg's Army
| 2018 - 2035
| Continuing on the above, this may be presuming the dominance of {{w|Facebook}} during the childhoods of this generation, and corresponding social norming as ultimately directed by its leader {{w|Mark Zuckerberg}}. <s>Ironically, as of this comic's posting, [http://www.independent.co.uk/life-style/gadgets-and-tech/news/facebook-quit-young-people-social-media-snapchat-instagram-emarketer-a8206486.html young users were already leaving Facebook for other social media sites].</s> Oh wait, Zuckerberg's creating the {{w|Metaverse}}. May also be a reference to "Dumbledore's Army" in ''Harry Potter and the Order of the Phoenix''. It is uncertain whether Zuckerberg's Army is in alliance or at war with the other social media militaries of the mid-21st century.
|-
| The Hovering Ones
| 2036 - 2053
| This may posit increased adoption of cybernetics, which (as with any technology) are more easily adopted by the young who do not have to unlearn previous ways. If advances allowed someone to hover all the time, such that one would not need to walk, this generation's name suggests that becoming so widely used among this generation that they became known for it.
|-
| Spare Parts
| 2054 - 2071
| Continuing on the above speculation about cybernetics, this presumes enough apathy or sociopathy among this generation's parents that giving birth (or other means of creating a new human) was often done to create bodies from which organs could be harvested (presumably primarily for the benefit of their elders).
|-
| More Gen-Xers somehow
| 2072 - 2089
| As with "Generation – • • –", this may be positing that Generation X like traits pop up about 3/4 of the way through each century.
|-
| The Paperclip Machines
| 2090 - 2107
| This, and the title text, are references to the concept of a [https://wiki.lesswrong.com/wiki/Paperclip_maximizer paperclip maximizer], where an AI might be designed to be helpful, but end up being harmful. The clicker game [http://www.decisionproblem.com/paperclips/ Universal Paperclips] makes this concept playable. Furthering the above speculation of cybernetics, this generation might be primarily artificial intelligences, though of limited ability to set their own priorities (a flaw which would be fixed in later generations).
|-
| The Mixed Bag (produced 4 Lincolns, 1 Napoleon, and 2 Hitlers)
| 2108 - 2125
| As with the above examples, a generation may become known for its most famous members, but it is not useful to define an entire generation by them. In this case, the generation may have literally produced 4 Lincolns, 1 Napoleon, and 2 Hitlers via cloning or the like. This also implies that Napoleon's generation was named after him. However, Napoleon's generation is ironically, the Adequate Generation.
|-
| The Procedural Generation
| 2126 - 2143
| {{w|Procedural generation}} is a way of creating data automatically, rather than capturing it via sensor (including when the "sensor" is a keyboard and the data is typed in). This confusion of the term "generation" could refer to more artificial intelligences that were created via routines instead of directly coded, which would likely stem from attempts to improve child creation once most children were explicitly manufactured instead of relying on evolution-granted biological means.
|-
| Generation Ω
| 2144 - 2161
| "{{w|Omega}}" is the last letter in the Greek alphabet, and used as a symbol of endings. Given the above generation names implying increasingly artificial children, this may suggest the last generation that is recognizably a generation. This does not necessarily mean the end of children or the end of humanity, just that anything after 2161 is widely recognized to no longer have even notional generational coherence - perhaps because of drift (children born to one group during a given time are wildly different enough from children born to another group at the same time that people give up trying to group them by time), child gestation and maturation times (for example, if it became common for a child to go from conception to adulthood in less than a year), or exceptions to what counts as a "child" (for example, if it becomes possible and common to create clones that are somewhere between free-willed beings and mind-controlled drones, and this sufficiently supplants creation of completely free-willed children, regardless of whether the children are artificial intelligences or old-fashioned biological children).
|-
| Star Trek: The Next Generation
|2360 - 2378
|''{{w|Star Trek: The Next Generation}}'' was a TV show set in the future.{{Citation needed}} The first episode of ''TNG'', "{{w|Encounter at Farpoint}}", takes place in 2364, and it concluded with "{{w|All_Good_Things..._(Star_Trek:_The_Next_Generation)|All Good Things...}}", which took place in 2370. The final canonical adventures of the cast of ''The Next Generation'' did not occur until the events of ''{{w|Star Trek: Nemesis}}'' in 2379.
|}

In the title text Randall suggests that the generation of paperclip-creating superintelligences will be weirded out when their parent generation starts making them too. (A parent generation in AI is the last set of seperate algorithms trained on the sample before the last.) The implication is that their "parents" attempting to join in on converting all matter into paperclips will make the process seem outdated and uncool by association; a comparison could be drawn to, for example, Facebook losing younger users as it gains older users.

==Transcript==

:<span style=color:#585858>"Generations" are arbitrary. They're just labels we use to obliquely talk about cultural trends.</span>
:<span style=color:#585858>But since Pew Research has become the latest to weigh in, and everyone loves a good pointless argument over definitions...</span>

:''xkcd presents''
:A Definitive Chronology of the Generations

:1730-1747 The Founders
:1748-1765 Generation ƒ
:1766-1783 The Adequate Generation
:1784-1801 Generation Æ
:1802-1819 The generation we cut a lot of slack because they produced Lincoln
:1820-1837 The Gilded Generation
:1838-1855 The Second-Greatest Generation
:1856-1873 Generation – • • –
:1874-1891 The kids who died in the Gilded Generation's factories and mines
:1892-1909 Oops, one of us is Hitler
:<span style="background:#f0ee87">1910-1927 The Greatest Generation</span>
:<span style="background:#f0ee87">1928-1945 The Silent Generation</span>
:<span style="background:#f0ee87">1946-1963 Baby Boomers</span>
:<span style="background:#f0ee87">1964-1981 Generation X</span>
:<span style="background:#f0ee87">1982-1999 Millennials</span>
:2000-2017 Generation 💅 [nail polish emoji]
:2018-2035 Zuckerberg's army
:2036-2053 The Hovering Ones
:2054-2071 Spare Parts
:2072-2089 More Gen-Xers somehow
:2090-2107 The Paperclip Machines
:2108-2125 The Mixed Bag (produced 4 Lincolns, 1 Napoleon and 2 Hitlers)
:2126-2143 The Procedural Generation
:2144-2161 Generation Ω
:2360-2378 Star Trek: The Next Generation

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Emoji]]

2791: Bookshelf Sorting

2023-06-19T21:55:10Z

WriterArtistCoder: Added explanation

{{comic
| number = 2791
| date = June 19, 2023
| title = Bookshelf Sorting
| image = bookshelf_sorting_2x.png
| imagesize = 425x255px
| noexpand = true
| titletext = Of course, I sort all my bookshelves the normal way, alphabetically (by first sentence).
}}

==Explanation==
{{incomplete|Created by a BOOKSHELF SORTED THE NORMAL WAY - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
Some people sort their bookshelves by color, which is pleasing to the eyes but unhelpful when trying to find a specific book. Randall proposes a much more infuriating way to sort books - to separate each book into its pages and organize them into groups by page number. All the covers are at the left side, being effectively "page 0", then all the page 1s, the page 2s, et cetera. This method, like sorting by color, has no practical use in most situations. It damages the books and makes it much harder to find information.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

[A bookshelf is shown. From left to right, there are 11 pairs of covers in different sizes and shades of gray. To the left, one of each pair of covers is arranged with its all the others. Going rightwards, many leaves of paper (wth a similar set of differing heights) lead up to the partner-cover to the last of these initial covers. More paper, for varying amounts, more covers, and repeat until the outermost paired-cover at the end of the shelf.]

Book people hate seeing books sorted by colors, but it turns out they get ''way'' more angry if you sort the pages by number

{{comic discussion}}

2685: 2045

2022-10-14T21:36:43Z

WriterArtistCoder: Added explanation for why Black Hat can't make it

{{comic
| number = 2685
| date = October 14, 2022
| title = 2045
| image = 2045_2x.png
| imagesize = 350x457px
| noexpand = true
| titletext = "Sorry, doctor, I'm going to have to come in on a different day--I have another appointment that would be really hard to move, in terms of the kinetic energy requirements."
}}

==Explanation==
{{incomplete|Created by a GIGANTIC NUCLEAR FURNACE (THE SUN) - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The characters are talking about upcoming total {{w|solar eclipses}}. Partial solar eclipses are fairly frequent (2–5 per year), but total eclipses are less frequent (about every 18 months), and most of them will not be in convenient locations for a particular set of people. Cueball seems to be talking about total eclipses visible in much of North America: {{w|Solar eclipse of April 8, 2024|April 8, 2024}} and {{w|Solar eclipse of August 12, 2045|August 12, 2045}}. (There's also an {{w|annular eclipse}} on October 14, 2023.) Making plans for eclipses is awkward given the uncertainty present for anything else far in the future, such as whether the attendees will have children by then, and even whether another scheduling program will catch on and replace Google Calendar.

Black Hat claims he can't make it, as he has "a thing" on August 12, 2045. Events as minor and unspecific as "a thing" are not typically scheduled at a precise date this far in the future{{Citation needed}}, implying that this could be one of his more grand and sinister plans... Or he just doesn't want to go.

The title text is someone canceling a medical appointment to see the eclipse. The eclipse is hard to move because that would require hastening or delaying it by moving the Earth, Moon or Sun, any of which would require vast amounts of energy.{{Citation needed}} People also don't often schedule doctor's appointments decades in advance.{{Citation needed}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[Cueball, another person, Danish, and Black Hat are standing together. Danish is looking at her phone.]
:Cueball: ...And then after the one in 2024, there's another on August 12, 2045.
:Friend: We're in! We can invite our kids, assuming we have any.
:Danish: I'll create an event. Do you think we'll still be using Google Calendar in 2045?
:Black Hat: Sorry, I'd love to make it, but I have a thing that day.

:Caption: It's weird making plans for eclipses.

{{comic discussion}}

2679: Quantified Self

2022-09-30T20:50:48Z

WriterArtistCoder: Added explanation

{{comic
| number = 2679
| date = September 30, 2022
| title = Quantified Self
| image = quantified_self_2x.png
| imagesize = 386x328px
| noexpand = true
| titletext = It's made me way more excited about ferris wheels, subways, car washes, waterslides, and store entrances that have double doors with a divider in the middle.
}}

==Explanation==
{{incomplete|Created by a PERSON STRANGLED TO DEATH WITH IMAGINARY PATH-STRING - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
Cueball (a representation of Randall in this comic) is talking about how he embraces the quantified self, a popular philosophy promoting tracking yourself with devices and data to help your well-being. He claims to apply this phiolosophy to his life, but he creates extremely nonsensical measurements of his fitness that create odd incentives and are unlikely to help his health.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

[A red path links two red Cueballs. It start from the left Cueball, does two loops through a small house, under a first road bridge, under a gantry sign, under a second road bridge, under the Gateway Arch, and to a second red Cueball on the right. That Cueball is looking at a smart watch on its wrist.]

:Red Cueball's watch: Good job! You hit your weekly goal for "total length of your path through space if you minimize its length by pulling it taut, maneuvering it around solid objects but not through them."

:Below the panel: I'm into the quantified self, but only for really arbitrary quantities.

{{comic discussion}}

[[Category:Comics with color]]

2611: Cutest-Sounding Scientific Effects

2022-04-27T04:02:12Z

WriterArtistCoder: Fixed time, my bad

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP number" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP number could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:YORP effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave ran from April 25, 2022 at 5:19pm ET to the next day at 5:42pm ET.
* [https://twitter.com/xkcd/status/1518701311763570689 '''YORP effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect (42.4%) vs '''Cheerios effect (57.6%)'''], 7,513 votes
* [https://twitter.com/xkcd/status/1518705352342228998 '''Hot chocolate effect (56.2%)''' vs Perky effect (43.8%)], 7,379 votes
* [https://twitter.com/xkcd/status/1518705724737662977 '''Bouba/kiki effect (64%)''' vs Cutaneous rabbit effect (36%)], 7,563 votes
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect (18.4%) vs '''Little Parks effect (81.6%)'''], 7,209 votes
* [https://twitter.com/xkcd/status/1518706772999118848 '''Dr. Fox effect (67.5%)''' vs Oddity effect (32.5%)], 7,852 votes
* [https://twitter.com/xkcd/status/1518707180320481280 '''Butterfly effect (56.5%)''' vs Popcorn effect (43.4%)], 7,825 votes

====Second wave====
The second wave started on April 26, 2022 at 5:56pm ET and is currently ongoing. It will end around 11:56am ET.
* [https://twitter.com/xkcd/status/1519073013781647365 YORP effect vs Woozle effect]
* [https://twitter.com/xkcd/status/1519074868637147138 Cheerios effect vs Hot chocolate effect]
* [https://twitter.com/xkcd/status/1519077131376074754 Bouba/Kiki effect vs Little parks effect]
* [https://twitter.com/xkcd/status/1519079116993183749 Dr. Fox effect vs Butterfly effect]

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]

2611: Cutest-Sounding Scientific Effects

2022-04-27T00:59:03Z

WriterArtistCoder: Added end time for second wave

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP number" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP number could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:YORP effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave ran from April 25, 2022 at 5:19pm ET to the next day at 5:42pm ET.
* [https://twitter.com/xkcd/status/1518701311763570689 '''YORP effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect (42.4%) vs '''Cheerios effect (57.6%)'''], 7,513 votes
* [https://twitter.com/xkcd/status/1518705352342228998 '''Hot chocolate effect (56.2%)''' vs Perky effect (43.8%)], 7,379 votes
* [https://twitter.com/xkcd/status/1518705724737662977 '''Bouba/kiki effect (64%)''' vs Cutaneous rabbit effect (36%)], 7,563 votes
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect (18.4%) vs '''Little Parks effect (81.6%)'''], 7,209 votes
* [https://twitter.com/xkcd/status/1518706772999118848 '''Dr. Fox effect (67.5%)''' vs Oddity effect (32.5%)], 7,852 votes
* [https://twitter.com/xkcd/status/1518707180320481280 '''Butterfly effect (56.5%)''' vs Popcorn effect (43.4%)], 7,825 votes

====Second wave====
The second wave started on April 26, 2022 at 5:56pm ET and is currently ongoing. It will end at 9:56am PT.
* [https://twitter.com/xkcd/status/1519073013781647365 YORP effect vs Woozle effect]
* [https://twitter.com/xkcd/status/1519074868637147138 Cheerios effect vs Hot chocolate effect]
* [https://twitter.com/xkcd/status/1519077131376074754 Bouba/Kiki effect vs Little parks effect]
* [https://twitter.com/xkcd/status/1519079116993183749 Dr. Fox effect vs Butterfly effect]

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]

2611: Cutest-Sounding Scientific Effects

2022-04-27T00:44:29Z

WriterArtistCoder: Converted Pacific Time to Eastern Time, more relevant to XKCD

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP number" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP number could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:YORP effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave ran from April 25, 2022 at 5:19pm ET to the next day at 5:42pm ET.
* [https://twitter.com/xkcd/status/1518701311763570689 '''YORP effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect (42.4%) vs '''Cheerios effect (57.6%)'''], 7,513 votes
* [https://twitter.com/xkcd/status/1518705352342228998 '''Hot chocolate effect (56.2%)''' vs Perky effect (43.8%)], 7,379 votes
* [https://twitter.com/xkcd/status/1518705724737662977 '''Bouba/kiki effect (64%)''' vs Cutaneous rabbit effect (36%)], 7,563 votes
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect (18.4%) vs '''Little Parks effect (81.6%)'''], 7,209 votes
* [https://twitter.com/xkcd/status/1518706772999118848 '''Dr. Fox effect (67.5%)''' vs Oddity effect (32.5%)], 7,852 votes
* [https://twitter.com/xkcd/status/1518707180320481280 '''Butterfly effect (56.5%)''' vs Popcorn effect (43.4%)], 7,825 votes

====Second wave====
The second wave started on April 26, 2022 at 5:56pm ET and is currently ongoing:
* [https://twitter.com/xkcd/status/1519073013781647365 YORP effect vs Woozle effect]
* [https://twitter.com/xkcd/status/1519074868637147138 Cheerios effect vs Hot chocolate effect]
* [https://twitter.com/xkcd/status/1519077131376074754 Bouba/Kiki effect vs Little parks effect]
* [https://twitter.com/xkcd/status/1519079116993183749 Dr. Fox effect vs Butterfly effect]

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]

2611: Cutest-Sounding Scientific Effects

2022-04-27T00:41:06Z

WriterArtistCoder: Changed all "Yorp" to "YORP"

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP number" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP number could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:YORP effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave ran from April 25, 2022 at 2:19pm PT to the next day at 2:42pm PT.
* [https://twitter.com/xkcd/status/1518701311763570689 '''YORP effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect (42.4%) vs '''Cheerios effect (57.6%)'''], 7,513 votes
* [https://twitter.com/xkcd/status/1518705352342228998 '''Hot chocolate effect (56.2%)''' vs Perky effect (43.8%)], 7,379 votes
* [https://twitter.com/xkcd/status/1518705724737662977 '''Bouba/kiki effect (64%)''' vs Cutaneous rabbit effect (36%)], 7,563 votes
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect (18.4%) vs '''Little Parks effect (81.6%)'''], 7,209 votes
* [https://twitter.com/xkcd/status/1518706772999118848 '''Dr. Fox effect (67.5%)''' vs Oddity effect (32.5%)], 7,852 votes
* [https://twitter.com/xkcd/status/1518707180320481280 '''Butterfly effect (56.5%)''' vs Popcorn effect (43.4%)], 7,825 votes

====Second wave====
The second wave started on April 26, 2022 at 2:56pm PT and is currently ongoing:
* [https://twitter.com/xkcd/status/1519073013781647365 YORP effect vs Woozle effect]
* [https://twitter.com/xkcd/status/1519074868637147138 Cheerios effect vs Hot chocolate effect]
* [https://twitter.com/xkcd/status/1519077131376074754 Bouba/Kiki effect vs Little parks effect]
* [https://twitter.com/xkcd/status/1519079116993183749 Dr. Fox effect vs Butterfly effect]

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]

2611: Cutest-Sounding Scientific Effects

2022-04-27T00:40:33Z

WriterArtistCoder: Added links for second wave

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP number" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP number could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:Yorp effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave ran from April 25, 2022 at 2:19pm PT to the next day at 2:42pm PT.
* [https://twitter.com/xkcd/status/1518701311763570689 '''Yorp effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect (42.4%) vs '''Cheerios effect (57.6%)'''], 7,513 votes
* [https://twitter.com/xkcd/status/1518705352342228998 '''Hot chocolate effect (56.2%)''' vs Perky effect (43.8%)], 7,379 votes
* [https://twitter.com/xkcd/status/1518705724737662977 '''Bouba/kiki effect (64%)''' vs Cutaneous rabbit effect (36%)], 7,563 votes
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect (18.4%) vs '''Little Parks effect (81.6%)'''], 7,209 votes
* [https://twitter.com/xkcd/status/1518706772999118848 '''Dr. Fox effect (67.5%)''' vs Oddity effect (32.5%)], 7,852 votes
* [https://twitter.com/xkcd/status/1518707180320481280 '''Butterfly effect (56.5%)''' vs Popcorn effect (43.4%)], 7,825 votes

====Second wave====
The second wave started on April 26, 2022 at 2:56pm PT and is currently ongoing:
* [https://twitter.com/xkcd/status/1519073013781647365 Yorp effect vs Woozle effect]
* [https://twitter.com/xkcd/status/1519074868637147138 Cheerios effect vs Hot chocolate effect]
* [https://twitter.com/xkcd/status/1519077131376074754 Bouba/Kiki effect vs Little parks effect]
* [https://twitter.com/xkcd/status/1519079116993183749 Dr. Fox effect vs Butterfly effect]

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]

2611: Cutest-Sounding Scientific Effects

2022-04-26T21:47:16Z

WriterArtistCoder: Added all first wave results

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP Effect" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP Effect could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:Yorp effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave ran from April 25, 2022 at 2:19pm PT to the next day at 2:42pm PT.
* [https://twitter.com/xkcd/status/1518701311763570689 '''Yorp effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect (42.4%) vs '''Cheerios effect (57.6%)'''], 7,513 votes
* [https://twitter.com/xkcd/status/1518705352342228998 '''Hot chocolate effect (56.2%)''' vs Perky effect (43.8%)], 7,379 votes
* [https://twitter.com/xkcd/status/1518705724737662977 '''Bouba/kiki effect (64%)''' vs Cutaneous rabbit effect (36%)], 7,563 votes
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect (18.4%) vs '''Little Parks effect (81.6%)'''], 7,209 votes
* [https://twitter.com/xkcd/status/1518706772999118848 '''Dr. Fox effect (67.5%)''' vs Oddity effect (32.5%)], 7,852 votes
* [https://twitter.com/xkcd/status/1518707180320481280 '''Butterfly effect (56.5%)''' vs Popcorn effect (43.4%)], 7,825 votes

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]

2611: Cutest-Sounding Scientific Effects

2022-04-26T21:36:07Z

WriterArtistCoder: Added Cheerios effect results

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP Effect" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP Effect could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:Yorp effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave started on April 25, 2022 at 2:19pm, and will end on April 26, 2022 at 2:42pm.
* [https://twitter.com/xkcd/status/1518701311763570689 '''Yorp effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect (42.4%) vs '''Cheerios effect (57.6%)'''], 7,513 votes
* [https://twitter.com/xkcd/status/1518705352342228998 Hot chocolate effect vs Perky effect] (ongoing)
* [https://twitter.com/xkcd/status/1518705724737662977 Bouba/kiki effect vs Cutaneous rabbit effect] (ongoing)
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect vs Little Parks effect] (ongoing)
* [https://twitter.com/xkcd/status/1518706772999118848 Dr. Fox effect vs Oddity effect] (ongoing)
* [https://twitter.com/xkcd/status/1518707180320481280 Butterfly effect vs Popcorn effect] (ongoing)

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]

2611: Cutest-Sounding Scientific Effects

2022-04-26T21:32:08Z

WriterArtistCoder: Added Woozle v Stroop, corrected earlier mismatch

{{comic
| number = 2611
| date = April 25, 2022
| title = Cutest-Sounding Scientific Effects
| image = cutest_sounding_scientific_effects.png
| titletext = The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
}}

==Explanation==
{{incomplete|Created by A GUY WITH A Stroop-YORP Effect NUMBER OF 16! - Fill in the [[#Result of the twitter polls|Result of the twitter polls]] as it comes in! Do NOT delete this tag too soon.}}
[[Randall]] has compiled [[:Category:Tournament bracket|yet another]] {{w|Tournament bracket|single-elimination tournament bracket}} for a knock-out competition between 16 different scientific effect names that Randall considers cute-sounding.

As of the release day, he is determining the result in a [https://twitter.com/xkcd/status/1518701311763570689 series of Twitter polls]. These results are shown [[#Result of the Twitter polls|here]].

See [[#Effects|below]] for explanations for what each of the 16 effects are.

Several unrelated scientific effects were previously combined in [[1531: The BDLPSWDKS Effect]], which also included the Stroop effect (the last S).

In the title text, Randall coins the term "Stroop-YORP Effect" as a count of how many 'casual' references a future publication can sneak into it from the 16 finalist names for cutest effect. It specifies that it should be without the word effect after the words (sans 'effect').

Tongue-in-cheek 'counting scores' are familiar in the likes of the {{w|Erdős_number|Erdős}} and {{w|Bacon_number|Bacon}} numbers, both of which are being referenced by [[599: Apocalypse]] (the latter only in the title text). Albeit in these cases the ideal is to get the ''lowest'' number as opposed to here where higher is better. The cross-field hybrid {{w|Erdős–Bacon number}} is one in which the desired score is the lowest sum of both values (neither being undefinable) by dint of having participated in both arenas of respective achievement, but not necessarily (or practically) in a single combined presentation.

For instance the Stroop-YORP Effect could be high for a wildlife paper. That could possibly use "butterfly" and "rabbit" (possibly needing the latter to be specifically 'cutaneous', to count), which may both be found in "little parks" with some "popcorn" seen littered around without too much "oddity"; and of course a (Dr.?) "fox" could be in the area, getting a score of 6. But other words may be a stretch, with an imaginative reference to a "woozle" possibly easier to employ than to evoke anything of the "nocebo".

On the other hand, for a space-science paper there may be more obvious (mis)uses for physics-related terms, and mentioning YORP might well be expected. But it may need creative thinking to introduce the rabbit or the more psychological idea of Stroopicity, etc, without reason to discuss the responses of animal or human payloads being sent there.

It is not actually obvious whether Randall intends the score to only be valid if the insertions are off-field and/or undetected, such as when someone is wagered that they can slip unrelated song lyrics into a public speech without the rest of the audience twigging.

A search of google scholar indicates many articles with a score of 2, eg [https://www.tandfonline.com/doi/full/10.1080/87559129.2012.714435 this paper] which refers to butterfly shaped popcorn, but 3 or more seems to not be attested.

==Effects==
;{{w|YORP effect}}: The YORP effect is the effect of sunlight on an asteroid with variations of shape and/or albedo, which can increase its rotation rate and/or modify its axis of rotation. It can cause objects to eventually spin apart or drastically change their orbit.
:It is an acronym of the names Yarkovsky, O’Keefe, Radzievskii and Paddack, who were instrumental in its discovery. More than a century ago, Yarkovsky determined that heat applied to a symmetrical rotating body would be asymmetrically re-emitted and apply a small but continuous thrust, and this was added to by considering the forces to non-symmetrical bodies.
;{{w|Nocebo effect}}: An effect in which a recipient of medication who believes that it will have negative side-effects is more likely to experience those negative side-effects, whether they can be really caused by the medication or not. Opposite of the {{w|placebo effect}}, which focuses on positive side-effects that arise beyond the true efficacy of a given treatment.
;{{w|Woozle effect}}: If a study gets repeatedly cited and otherwise disseminated, then people will start to believe it regardless of whether it has any evidence behind it. And if there is not any evidence, it becomes an urban myth.
:Named after a Winnie-the-Pooh story in which Winnie-the-Pooh and Piglet try to catch an imaginary animal called a woozle, and accidentally follow their own tracks in circles.
;{{w|Stroop effect}}: The Stroop effect (referenced in [[1531: The BDLPSWDKS Effect]]) is a psychological phenomenon in which it is easier to name the visual color of a word when the word refers to its own color, than when the word refers to a different color.
:i.e that saying that '''<span style="color: red;">Red</span>''' is red is easier than to say that '''<span style="color: green">Blue</span>''' is green.
;{{w|Pockels effect}}: A phenomenon where an electric field passed through a medium can cause the medium's refractive index to depend upon the polarization and propagation direction of the refracted light, a property known as {{w|birefringence}}.
;{{w|Cheerios effect}}: A phenomenon where objects floating in a liquid appear to attract or repel each other.
:Named after the cereal Cheerios, which are an everyday demonstration of this phenomenon because many eat Cheerios in a bowl of milk.
;{{w|Hot chocolate effect}}: A phenomenon where the sound created by tapping a cup of hot liquid rises in pitch as a soluble powder is added.
;{{w|Perky effect}}: An experiment in which participants were asked to visualize an object while staring at a screen on which the outline of that object was subtly projected. Participants believed the projected shape to be only a product of their imaginations.
;{{w|Bouba/kiki effect}}: An observation that people, despite different native languages, will relatively consistently assign names with certain sounds to blobby or spiky shapes, suggesting the association of sound and shape is non-arbitrary.
;{{w|Cutaneous rabbit effect}}: A phenomenon where, when tapped on one part of the body in rapid succession and then switching to another, the subject feels the tapping at locations in between the two.
:For example, if rapidly tapping the wrist then switching to the elbow, the subject will subjectively feel as if they are being tapped at progressive intervals between the wrist and elbow, when they are not.
;[https://www.investopedia.com/terms/s/smallfirmeffect.asp Small firm effect]: An economic theory that small firms usually perform better than larger ones
;{{w|Little–Parks effect}}: A phenomenon where a fluctuating magnetic field passed through a superconductor can slightly suppress its superconductivity, inducing small fluctuations in its electrical resistance.
:When juxtaposed against the "small firm effect", as in the bracket, one might get the impression that it is somehow related to urban architecture or civil engineering.
;{{w|Dr. Fox effect}}: A disputed theory that student evaluations of their teachers are likely unreliable, because they are largely based on the teacher's charisma instead of the quality of their content.
;{{w|Oddity effect}}: A theory that when fish assemble in shoals (large social groups), any that stand out appearance-wise will be attacked by a predator, explaining why shoals tend to have similar-looking members.
;{{w|Butterfly effect}}: The butterfly effect is the sensitivity of chaotic systems to small changes in initial conditions. The weather system of Earth is chaotic, and so an arbitrarily small change in air patterns (such as could be caused by the flapping of a butterfly's wing) could ultimately change the weather for the whole world.
;{{w|Popcorn effect}}: A phenomenon exhibited by crushed ore placed on a vibrating screen for separation in mineral processing, in which larger particles tend to bounce higher than smaller particles.

==Transcript==
:[A tournament bracket tree is shown with 16 scientific effect names, with 8 on the left and 8 on the right side. From both sides toward the middle the brackets reduce from eight to four, to two, then to one line where the latter join to a rectangle in the middle for the winners name of the final match. Above the bracket there is a title:]
:<big>Cutest-Sounding Scientific Effects</big>

:[Left side:]
:Yorp effect
:Nocebo effect

:Woozle effect
:Stroop effect

:Pockels effect
:Cheerios effect

:Hot chocolate effect
:Perky effect

:[Right side:]
:Bouba/kiki effect
:Cutaneous rabbit effect

:Small firm effect
:Little Parks effect

:Dr. Fox effect
:Oddity effect

:Butterfly effect
:Popcorn effect

==Trivia==
* Randall has created [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls] to determine the outcome of this version of his [[1819: Sweet 16|sweet 16]]:

===Result of the [https://twitter.com/xkcd/status/1518701311763570689 Twitter polls]===
====First wave====
The first wave started on April 25, 2022 at 2:19pm, and will end on April 26, 2022 at 2:42pm.
* [https://twitter.com/xkcd/status/1518701311763570689 '''Yorp effect (67.7%)''' vs Nocebo effect (32.3%)], 8,996 votes
* [https://twitter.com/xkcd/status/1518702773075943425 '''Woozle effect (74.4%)''' vs Stroop effect (25.6%)], 8,517 votes
* [https://twitter.com/xkcd/status/1518704819720044544 Pockels effect vs Cheerios effect] (ongoing)
* [https://twitter.com/xkcd/status/1518705352342228998 Hot chocolate effect vs Perky effect] (ongoing)
* [https://twitter.com/xkcd/status/1518705724737662977 Bouba/kiki effect vs Cutaneous rabbit effect] (ongoing)
* [https://twitter.com/xkcd/status/1518706168440541194 Small firm effect vs Little Parks effect] (ongoing)
* [https://twitter.com/xkcd/status/1518706772999118848 Dr. Fox effect vs Oddity effect] (ongoing)
* [https://twitter.com/xkcd/status/1518707180320481280 Butterfly effect vs Popcorn effect] (ongoing)

{{comic discussion}}

[[Category:Science]]
[[Category:Tournament bracket]]