explain xkcd - User contributions [en]

3085: About 20 Pounds

2025-05-08T22:22:19Z

172.69.79.191: /* Explanation */ more sensible whitespace

{{comic
| number = 3085
| date = May 5, 2025
| title = About 20 Pounds
| image = about_20_pounds_2x.png
| imagesize = 666x278px
| noexpand = true
| titletext = In addition to gravity, burritos interact through the strong, weak, and electromagnetic forces, which is believed to be a major contributor to their popularity.
}}

==Explanation==
{{incomplete|
*'''The article might be off-topic'''. We should focus on explaining the comic, not everything known to humans about dark matter.

*'''The article might be too technical and short''', especially the leading paragraph.
Don't remove this notice too soon.}}
The nature of {{w|dark matter}} is a significant unsolved problem in physics. We observe that galaxies spin faster than we expect based on the nearby observable matter. Likewise galactic motions indicate additional mass that we have not observed in other ways. Dark matter is the name we give to this mass. In the comic, [[Cueball]] and [[Ponytail]] consult an {{w|oracle}} to learn about dark matter.

The pentacle and candles suggest that the oracle is supernatural, summoned by an occult ritual; something which would present its own challenges to our understanding of the physical world. There may be a pun here, in that they may be using 'dark magic' to communicate with something from the 'dark realm' on the assumption that it will know about dark matter. However, the word 'dark' in dark matter simply means that we do not know how to observe it; we have no evidence that dark matter is evil or satanic (though [[Randall]] may consider it [[:Category:Comics with cursed items|cursed]]). The oracle is used very similarly to how people have been using and customizing {{w|large language model|large language models}}.

In general, not all forces interact with all particles; indeed, {{w|gravity}} is believed to be the only force that interacts with everything we have observed. If a force doesn't interact with a particle, then the particle's existence cannot be directly observed via disturbances in that force. In particular, something that doesn't interact with electromagnetism cannot be 'seen', as photons will pass through it relatively unaffected, and likewise cannot be felt, because collision is a side effect of the {{w|Pauli exclusion principle}}.

Even {{w|neutrino}}s — famous for {{what if|73|interacting with ''almost'' nothing}} — still interact via the {{w|weak force}}, allowing them to be detected with sufficiently large tanks of dense material (as most atoms interact with the weak force, however weakly). This is the main reason neutrinos cannot be dark matter: they interact far too much to be a viable option. A particle that interacts with ''nothing'' except gravity could only be detected by a {{w|LIGO|gravitational telescope}}.

Dark matter is infered from its gravitational interaction with other matter (the hint that it exists is in the apparent rotational profiles of galaxies, for which not enough mass is otherwise visible). While no other form of interaction has yet been observed, terrestrial dark matter experiments are looking for all possible variations of the 'missing mass' that might be detectable by other means. For example, a popular dark matter candidate is a WIMP, or {{w|weakly interacting massive particle}}, which interacts via the {{w|weak nuclear force}}. Dark matter experiments such as XENON build large tanks of liquid xenon with a gaseous top, keep them extremely dark, and look for some way in which passing particles might interact and produce electroluminescent scintillations. There are good theoretical reasons to expect some interaction (i.e. to expect that the oracle in the comic is lying), but there are no sufficiently conclusive results as yet. The most important is the observational fact that dark matter exists (assuming it does) throughout the universe, and would be six times more abundant than baryons (which make up almost all the weight of known matter in the universe). 

There is one dark matter candidate where the only interaction is overwhelmingly gravitational: black holes formed through collapse in the early Universe. These primordial black holes may not be detectable through any terrestrial experiment. However, even these objects can be found through their lensing effects if they are sufficiently large and common to account for the 'missing mass' we are looking for. Black holes of around 10 kg would also (most likely) quickly evaporate through Hawking radiation, so are not a good dark matter candidate. Black holes of around asteroid mass would be extremely hard to detect and are a good dark matter candidate given current information.

The particle's mass is described vaguely as ''about twenty pounds'' (roughly 10 kilograms), in line with how apparently all-knowing oracles legendarily avoid unambiguous statements. This is an absolutely ludicrous amount of energy for particle physics. Any interaction would have to involve an equally ludicrous amount of other particle mass being in exactly the right place and time, a coincidence that might be so rare that one would not expect it to occur ever in the history of the universe. By comparison, the {{w|top quark|heaviest single particle}} we have observed, with a mass over a hundred times that of the proton, is around a tenth of a trillionth of a trillionth of a pound.

Under more normal circumstances, we might still hope to observe the properties of the particle via creating it ourselves under controlled laboratory conditions. But again, there is no reasonable way to focus the energy required into a single particle interaction. The {{w|Large Hadron Collider|most powerful particle accelerator in the world}}, for example, peaks at about ten thousand times the mass of the proton — a solid billion times less energy than required — so it's out too.

Despite all this, twenty pounds is also much too ''small'' to be detectable via gravitational interaction — its {{w|Perturbation (astronomy)|influence on the orbits of planets}}, say, or the strength of its {{w|gravitational lensing}} effect, would be entirely negligible. In the scenario posed by the comic, then, there is no plausible way to observe more about dark matter while on Earth. Even if we did find some such particles naturally occurring, and had instruments that could measure such small gravitational forces, since it would interact only via gravity, the only properties it could have other than mass would be its decay rates from other particles —which, again, would all be essentially nil, due to its mass.

The oracle proceeds to break expectations by suggesting that Ponytail and Cueball go out for {{w|burrito}}s, something not considered scientific. When faced with the apparent futility of continuing to try to investigate dark matter, the oracle predicts that going out for burritos is precisely as productive as any other approach — i.e., not at all. It justifies the suggestion by burritos being "pretty" good, again neither exactly quantifying the oracularity, and likely not even giving the optimal idea (for choice of food, or of any other "what now?" diversion that it might give).

The title text observes that burritos interact through all four known {{w|fundamental interactions}}, making burritos popular. The electromagnetic force mediates the chemical reactions leading to a burrito's taste, the strong force keeps atomic nuclei together, and gravity gives burritos heft, all of which are helpful for enjoying them. It's hard to see how the weak force, which takes part in radioactive decay, helps with burrito enjoyment or popularity, but the weak force is responsible for the nuclear fusion that allowed the complex elements of the burrito to exist in the first place.

The previous comic [[3084: Unstoppable Force and Immovable Object]] dealt with particles which do not even interact with gravity.
In [[2035: Dark Matter Candidates]] these 20 lb dark matter particles fit between magic 8 balls and space cows. The squirrels that make up [[2186: Dark Matter]] near the earth must be pretty chunky.

Talking to a floating sphere is becoming a returning subject in xkcd. See more about other instances of this on the page for the [[:Category:Time traveling Sphere|Time traveling Sphere]] series.

==Transcript==
:[Cueball and Ponytail are standing in front of a pentacle with lit candles at the corners. A black sphere, the oracle, is floating above the middle of the pentacle.]
:Ponytail: Dear oracle,
:Ponytail: What is the nature of dark matter?
:Oracle: It's about 20 pounds.

:[Close up of oracle]
:Off-panel: What?
:Oracle: Dark matter is a particle. It weighs about 20 pounds.
:Oracle: It only interacts through gravity.

:[Same view as first panel]
:Cueball: Only gravity, huh?
:Cueball: So none of our experiments are really going to tell us any more about it, then.
:Oracle: Afraid not.

:[Same view as first and third panels, except Cueball lifted his forearm.]
:Cueball: So what do we do?
:Oracle: You should go out for burritos.
:Ponytail: How will that help?
:Oracle: Well
:Oracle: Burritos are pretty good.

{{comic discussion}}<noinclude>
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Physics]]
[[Category:Cosmology]]
[[Category:Food]]

3075: Anachronym Challenge

2025-04-13T23:54:58Z

172.69.79.191: /* Explanation */

{{comic
| number = 3075
| date = April 11, 2025
| title = Anachronym Challenge
| image = anachronym_challenge_2x.png
| imagesize = 265x404px
| noexpand = true
| titletext = I have to pay with paper money.
}}

==Explanation==
{{incomplete|The table is incomplete.}}

[[Cueball]] is reading from a shopping list while shopping for groceries. The items on the list are all [https://en.wiktionary.org/wiki/anachronym anachronyms]. The names of the items indicate their material, but they are no longer made from that material.

{| class="wikitable sortable" style="margin-left:0px"
|-
! Item !! Original material !! Original still generally available?!! Actually made with !! Explanation
|-
| {{w|Aluminium foil|Tin foil}} || {{w|Tin}} || {{Yes|[https://www.thermofisher.com/order/catalog/product/044154.RG Yes]}}|| Aluminum || Formerly "tin foil" was made of the metal tin, but aluminum supplanted tin in the early-to-mid 20th century, as aluminum is cheaper and more durable.
|-
| {{w|Sponge (tool)|Sponges}}|| {{w|Sponge|Sea sponges}}, i.e., marine invertebrates in the phylum Porifera ||{{Yes|Yes}}|| Polyester, polyurethane, cellulose || An item commonly used in the kitchen to soak up water. Or bathrooms to wash yourself.
|-
| {{w|Silverware}} || {{w|Silver}} ||{{Yes|Yes, though at greater expense than silverplated or silver-like}}|| Stainless steel || Covers eating utensils, plates and dishes, candlesticks and trophies, which may all these days be electroplated, cupro-nickel alloys or stainless steel.
Possibly intended to only refer to knives, forks and spoons, which are marginally more likely everyday household purchases than the other candidates, though still less so than more disposable versions made of plastic or wood which cannot even be casually mistaken for silver.
|-
| {{w|Linens}} || {{w|Flax}} ||{{Yes|Yes}} || Cotton, hemp, polyester || Commonly in the form of sheets and blankets.
|-
| {{w|Clothes iron|Clothes iron}} || {{w|Iron}} ||{{No|No}}|| Aluminum, stainless steel & plastics || Used as a tool to remove wrinkles in clothing by heating it up. Modern irons are powered, but traditional irons needed to be heated.
|-
| {{w|Ironing board|Ironing board}} || Wooden board ||{{Yes|Yes}}|| Metal, fabric cover || Flat surface for ironing clothes. It could also refer to how an ironing board is not made from iron.
|-
| {{w|Corrective_lens#Reading_glasses|Reading glasses}} || {{w|Glass}} ||{{Yes|Yes}}|| Optical plastics || Used to assist farsighted people with focusing on things up close. Also traditionally made with glass, but nowadays made with CR-39 plastic due to glass's danger of shattering and higher weight.
|-
| {{w|Iron (golf)#Short irons|9 iron}} || Iron ||{{Yes|Yes}}|| Cast {{w|stainless steel}}, {{w|carbon steel}} || A type of golf club.
|-
| {{w|Wood (golf)|3 wood}}|| Wood ||{{Yes|Yes}}|| Titanium, carbon fiber || A type of golf club.
|-
| {{w|Sidewalk chalk|Sidewalk chalk}}|| {{w|Calcite}} chalk ||{{No|No}}|| Calcium sulfate ({{w|gypsum}}) || Used for making marks on pavement or rocks. (e.g., for entertainment, for temporary signs or indicators).
|-
| {{w|Rubber duck|Rubber duck}} || {{w|Rubber}} || {{No|No}} || Vinyl plastics || A children's bath toy. Also used in {{w|Friendly Floatees spill| science}} and {{w|Rubber duck debugging| programming}}.
|-
| {{w|Paper money|Paper money}} (title text) || Paper ||{{Yes|Yes, but usually {{w|cotton paper}}}}|| Cotton, linen fibers (U.S. note), polypropylene. ||
|}

Many of the objects listed on Cueball's shopping list can still be made with the materials that they are named after. Silverware can be made of sterling silver, especially in the cutlery of high-end establishments{{acn}}, but, unlike steel, traditional pure silver requires continued polishing to retain its finish. Cleaning sponges made of sea sponges are expensive, but can be [https://tofinosoapcompany.com/products/natural-sea-sponge-sustainably-harvested purchased]. Linens made from flax are still common some people even consider [https://www.roughlinen.com/en-ca/blogs/newsletters/linen-vs-flax whether flax is the better material]. Some wood clubs are still made from wood, specifically {{w|persimmon}}. {{w|Banknotes of the Japanese yen}} are [https://www.npb.go.jp/en/products/intro/tokutyou.html still made] from wood fiber from ''E. chrysantha'' and abaca pulp. Most of the traditional items can be found in antique sales at least occasionally, and some people still use them such as in communities that have separated from modern industry.

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

:[Cueball is looking at a phone, or perhaps a piece of paper, in his hand while holding his other hand on the handle of a shopping cart. Above the shopping cart, an underlined header and a bullet list are shown:]
:Shopping List
:* Tin Foil
:* Sponges
:* Silverware
:* Linens
:* Iron & Ironing Board
:* Reading Glasses
:* 9 Iron & 3 Wood
:* Sidewalk Chalk
:* Rubber Duck

:[Caption below the panel:]
:I'm trying to do a shopping trip where I only buy stuff that's no longer made from the material it's named after.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Language]]

3063: Planet Definitions

2025-03-15T12:19:07Z

172.69.79.191: /* Explanation */ Made the "Baby Boomer" comment obvious as a (prior) more site-suitable tongue-in-cheek comment. Added the current (different) Planet Nine possibility, with no expectation that future revelations/refinements will arrive any time soon.

{{comic
| number = 3063
| date = March 14, 2025
| title = Planet Definitions
| image = planet_definitions_2x.png
| imagesize = 653x1435px
| noexpand = true
| titletext = Under the 'has cleared its orbital neighborhood' and 'fuses hydrogen into helium' definitions, thanks to human activities Earth technically no longer qualifies as a planet but DOES count as a star.
}}

==Explanation==
{{incomplete|A table might be better to format the explanation.}}

This comic addresses the {{w|IAU definition of planet|controversy of whether of Pluto is a planet}} and explores many definitions, most of them humorous/nonsensical, of what a planet could be.

;Traditionalist: {{w|Pluto}} is a planet (9 planets)
:In modern times, there was {{w|IAU definition of planet#Background|no formal definition of a "planet"}} prior to 2006. However, it was generally accepted as a colloquialism that there were nine planets around the {{w|Sun}}, Pluto included, primarily starting with Pluto's discovery in 1930, based upon that time's scientific consensus that there ought to be another planet to account for peculiarities in the the orbits of the other outer planets. As more sophisticated methods of mapping the {{w|Solar System}} were developed and {{w|Eris (dwarf planet)|Eris}} was discovered to be even more massive than Pluto (which may not have been as significant as the theories that lead to its discovery suggested) it became clear to astronomers that a more standardized definition was needed. In 2006 the International Astronomical Union (IAU) published their formal redefinition of a "planet" to require a planet to be gravitationally dominant within its orbit, disqualifying Pluto (and Eris) which is now considered a "dwarf planet." This has been subject to push back from countless people, including [https://arxiv.org/abs/2110.15285 some planetary scientists], but in mostly nostalgic laypeople dissatisfied with Pluto being "demoted" or otherwise relegated when schoolchildren and adults alike have 'known' that there are nine planets for the most part of the last century (and [[988: Tradition|tradition]] has previously been refered to as whatever was current during "Baby Boomers' childhoods").
:Ironically, some of the latest study of the outer solar-system includes the possibility of yet ''another'' {{w|Planet Nine}}, but only time will tell if such an object exists and whether it would cross the IAU's current threshold or even require the threshold itself to be reassessed once more.

;Modern: Pluto is not a planet (8 planets)
:When the IAU redefined what a planet is in 2006, Pluto no longer qualifies as a planet. (since it wasn't able to clear its neighborhood around its orbit) Using the modern, and recently official, definition of a planet, only eight celestial objects qualified.

;Expansive: Dwarf planets are planets (17+ planets)
:It is likely that since the term "dwarf planet" contained "planet" in its name, Randall considered those as also planets under this category.
:It is also likely that the number of planets includes the ones that are considered planets and the ones that are considered to have compacted into fully solid bodies, {{w|Dwarf planet#Most likely dwarf planets| as defined by Grundy ''et al.'',}} those being {{w|Ceres (dwarf planet)|Ceres}}, Pluto, Eris, {{w|Makemake}}, {{w|Haumea}}, {{w|Gonggong (dwarf planet)|Gonggong}}, {{w|Quaoar}}, {{w|Orcus (dwarf planet|Orcus}} and {{w|Sedna (dwarf planet)|Sedna}}.
:The basis for this viewpoint is the possible alternative re-evaluation that the IAU could have adopted, in that all newly discovered things ''like'' Pluto (being considered a planet) should therefore be considered a planet. Indeed, Ceres had been observed some time before Pluto and had been called a planet (or a "minor planet") within both scientific and public realms.

;Ultratraditionalist: Only the classical planets are planets (5 planets)
:The {{w|classical planets}} are objects found and considered by the Greek astronomers in classical antiquity to be considered planets. Their definition of "planet" considered visible objects that move across the sky relative to the fixed stars, the original word itself being translated as "wanderer". There are seven classical planets, but if one were to only consider the ones that fall under the IAU's definition of a planet (this being ''less'' traditional), then there would only be five. (The Sun and the {{w|Moon}} would be disqualified.)
:Being (mostly) true to the spirit of the historic naming convention, this would be a conservative but 'valid' version of the criterion.

;Condescending: Only giant planets are planets; the rest are big {{w|asteroid}}s (4 planets)
:This definition may refer to the {{w|giant planets}}, planets much larger than the {{w|Earth}}. Only the four outer (IAU-defined) planets fall under this definition.
:Relegation of anything smaller, including our own planet, is an extreme attitude, but most of the initial [[:Category:Exoplanets|exoplanets]] discovered were, by practical necessity in their detection, also only of the "giant planet" mind.

;Simplistic: Anything gravitationally round is a planet (37+ planets)
:Using the Wikipedia {{w|list of gravitationally rounded objects of the Solar System}}, there are 37 objects listed. That includes the Sun, 8 planets, 9 dwarf planets and 19 {{w|Natural satellite|moon}}s, but falls short of also highlighting all of the smallest visible objects (as per Universalist, below).
:This definition is essentially ''part'' of the actual current definition of a planet, leaving out the main factor that specifically disqualifies Pluto.

;Grounded: Only objects a spaceship has landed on are planets (10 planets)
:This list includes objects in the Solar System that a spacecraft has {{w|List of landings on extraterrestrial bodies| performed a soft landing on}}. The list includes {{w|Venus}}, Earth, {{w|Mars}}, the Moon, {{w|Titan (moon)|Titan}}, {{w|433 Eros|Eros}}, {{w|25143 Itokawa|Itokawa}}, {{w|162173 Ryugu|Ryugu}} and {{w|101955 Bennu|Bennu}}. Notably, {{w|comet}} {{w|Philae (Spacecraft)| landings}} are not included in the list.
:The justification for this seeks to be that we must 'touch' the object before we consider it as worthy of being classified as more than a mere blob (or dot) in space.

;Regolithic: Anything covered in dirt and ice and stuff is a planet (infinite)
:This list excludes the {{w|Gas Giant}}s and the {{w|Ice Giant}}s. The list would likely include dwarf planets, asteroids, moons and comets. This is effectively the opposite of the "condescending" definition: every object in the solar system is included in one definition or the other (except for the Sun, which inhabits ).
:This is also an extension on the prior classicication. In this case ''could'' we meaningfully touch the object, with predominatingly atmospheric bodies being not considered so.

;Lunar: You can't be a planet if you don't have a moon (12+ objects)
:Only some objects in the solar system have known and acknowledged moons orbiting them. The value given may be {{w|List of natural satellites| the number of planets and dwarf planets}} that have moons, when excluding {{w|Haumea}} for not reaching {{w|hydrostatic equilibrium}} despite having moons. The Sun is excluded because its satellites are not moons, because ... oh, look, a Squirrel!
:Adopting this definition would suggest that a planetary body is not worthy of the name if it doesn't (with no matter for what reason) demonstrably have the means to dominate its local area by being the overwhelming focus of all adjacent bodies' own orbits.

;Solipsistic: Earth is the only planet (1 planet)
:{{w|Solipsism}} is the idea that only one's own mind is sure to exist. Randall extrapolated this idea to mean that only one's own planet that they are standing on is sure to exist.
:This projects (and relies upon) a more philosophical and/or semiotic assesment than any scientific one.

;Judgemental: Only the prettiest ones are planets (6 planets)
:This list is likely formulated from Randall's own perception of the prettiest planets in the Solar System. Strangely, seven objects are highlighted:
:* Earth
:* Jupiter
:* One of Jupiter's moons (unclear)
:* Saturn
:* One of Saturn's moons (unclear, possibly Titan)
:* Neptune's moon (probably Triton)
:* Pluto
:The subjectivity of this version of the definition makes it unlikely that a consensus of this form could be established.

;Empiricist: Only worlds that I, author of this table, have personally seen are planets (12 planets)
:This list may refer to the celestial objects in the Solar System that have been made visible at night, probably using with an optical telescope (a hobbyist one, perhaps Randall's, or from time borrowed on a major institutional installation). Jupiter's {{w|Galilean moons|four largest moons}} are [https://web.archive.org/web/20201112024151/http://denisdutton.com/jupiter_moons.htm technically visible to the naked eye] but hard to distinguish due to Jupiter's brightness, while Neptune is considered too faint to see (even if you know where to look). It may also be the case that Randall has never taken the time to look for Neptune while using a telescope. Apparently Randall has seen Uranus, which technically [https://www.skyatnightmagazine.com/advice/skills/how-see-uranus-in-night-sky Uranus ''is'' visible to the naked eye] under the very best viewing conditions, but these conditions are rare and it again requires knowing exactly where to look.
:The omission of the Sun from the list of worlds that Randall has personally seen is interesting. Yes, people are not supposed to stare at the Sun,{{citation needed}} but it is not too uncommon to accidentally look in its direction for a split-second before instinctively closing one's eyes and turning one's head away.
:As a different form of subjectivity, the value of this grouping's criteria is questionable, but not uncommon in other 'softer' sciences.

;Marine biologist: Only objects with oceans are planets (6+ planets)
:This list includes Earth, {{w|Europa (moon)|Europa}}, {{w|Ganymede (moon)|Ganymede}}, {{w|Callisto (moon)|Callisto}}, Titan, and {{w|Enceladus}}. Most of these have had the presence of significant water identified from the way local magnetic/electric fields are detected, but see the following item.
:There is a resemblance, here, to a loose understanding of what a "world" is, i.e. one that possesses various distinct 'terrains' beyond mere dry (and possibly considered featureless) rock. A marine biologist would, of course consider a marine (if not pellagic or bathyspheric) environment to be an essential element of any world.

;Maritime: Only objects with ''surface'' oceans are planets (2 planets)
:In the comic, only Earth and a Saturnian moon (likely to be Titan) are highlighted. Earth is the only body known in the solar system to have liquid water on the surface significant enough to be called an ocean. Titan's cold and dense atmosphere notably maintains surface 'seas' of methane and nitrogen, where other moons (given as additonal in the prior item) seem to have their liquid water beneath either whole-surface ice caps or otherwise deep under the surface.
:From the narrower point of view of a sailor, for example, there is no benefit in considering water hidden away far beneath the surface, and it might as well not be there. Whereas it's possible that a well-prepared mariner could eventually sail the strange seas of Titan, as easily (or easier) as an airman might {{w|Dragonfly (Titan space probe)|fly through its skies}}.

;Universalist: They're all planets (infinite)
:This list claims that all objects are planets, all drawn items (as also would presuming all undrawn/undrawable items) being marked as such, including the Sun.
:Giving up on any thought of exclusivity, this unconventional view willingly inducts all visible objects into consideration.

;Existentialist: What if {{w|outer space|space}} ''itself'' is a planet??? (Duude)
:This list is different from the list above as it claims that all of space, rather than only the objects existing in space, are planets. The interjection ''Duude'' expresses one's amazement at this 'revelation' and replaces the number count— and is sometimes stereotyped to imply the speaker is high on marijuana or other drugs popular with the 1960s hippie counterculture.
:The strange stretch of imagination, as prompted by some narcotic or other, abandons all pretense at sensibly sorting everything into "planet" or "not planet", as not only is everything a planet, but so is the nothing ''between'' these titular planets.

;Spiteful: ''Only'' Pluto is a planet (1 planet)
:This list is a malicious play on the demotion of Pluto by demoting all other planets except Pluto instead, leaving Pluto as the only planet in the solar system.
:This is the taxonomic equivalent of refusing to play and taking your ball home to spite those who you think don't deserve it.

;(title text) {{w|Star}}: Earth is a star (2 stars)
:In May 1934, Mark Oliphant, Paul Harteck and Ernest Rutherford at the Cavendish Laboratory, published an intentional deuterium fusion experiment, and made the discovery of both tritium and helium-3. This is widely considered the first experimental demonstration of fusion. Randall considers that this makes Earth fall into the category of a star due to the human-induced ability for Earth to fuse hydrogen into helium using nuclear fusion.
:By changing not only the definition, but the term being defined, this drifts yet further from any consensus view on the original question and into a typical punchline absurdity.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[A table with 3 columns, and 17 rows below the the header row, labelled "Definition", "# of planets" and "Solar system".]
:[In each row, the first column has a single word, in bold, then a descriptive sentence. The second column has a digit or other 'value'. The third column is a not-to-scale drawing of the Solar system, featuring the Sun, various 'planetary' bodies and an apparently selective sample of moons/asteroids, as follows: The Sun, Mercury, Venus, Earth + The Moon, Mars + two moons (Phobos and Deimos), a small selection of Asteroid Belt bodies (Ceres in the midst of other, smaller, examples), Jupiter + four moons (likely Io, Europa, Ganymede and Callisto), a ringed Saturn + usually one moon (probably Titan) or two (possibly Enceladus or Iapetus, as required), Uranus + four or five moons (likely to be Miranda, Ariel, Umbriel, Titania and Oberon, but one of these (shown upon the face of Uranus) only appears in some iterations of the base image), Neptune + one moon (probably Triton), Pluto + one moon (Charon), four more plutoid/Kuiper Belt objeccts (too little context to identify, but possibly Haumea, Makemake, Gonggong and Eris, in distance order), the first two of them with distinct moons indicated (entirely dependent upon which main objects they are).]
:[Each row's illustrated solar system has indivudal combinations of green highlights applied to the otherwise repeated diagram.]
:[Row 1: Definition:] Traditionalist: Pluto is a planet [Number:] 9 [Highlit: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto]
:[Row 2: Definition:] Modern: Pluto is not a planet [Number:] 8 [Highlit: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune]
:[Row 3: Definition:] Expansive: Dwarf planets are planets [Number:] 17+ [Highlit: Mercury, Venus, Earth, Mars, Ceres (in Asteroid Belt), Jupiter, Saturn, Uranus, Neptune, Pluto and the further main bodies]
:[Row 4: Definition:] Ultratraditionalist: Only the classical planets are planets [Number:] 5 [Highlit: Mercury, Venus, Mars, Jupiter, Saturn]
:[Row 5: Definition:] Condescending: Only giant planets are planets; the rest are big asteroids. [Number:] 4 [Highlit: Jupiter, Saturn, Uranus, Neptune]
:[Row 6: Definition:] Simplistic: Anything gravitationally round is a planet [Number:] 37+ [Highlit: The Sun, Mercury, Venus, Earth, The Moon, Mars, Ceres (without other asteroids), Jupiter + moons, Saturn with Titan, Uranus and its moons, Neptune with its moon, Pluto and the four further dwarf planets]
:[Row 7: Definition:] Grounded: Only objects a spaceship has landed on are planets [Number:] 10 [Highlit: Venus, Earth, The Moon, Mars, five (non-Ceriese) asteroids and Titan]
:[Row 8: Definition:] Regolithic: Anything covered in dirt and ice and stuff is a planet [Number:] [infinity symbol] [Highlit: Mercury, Venus, Earth, The Moon, Mars, Ceres with all other asteroids depicted in the Asteroid Belt, the moons of Jupiter, the sole moon! of Saturn, the moons of Uranus, the moon of Neptune, Pluto with Charon, and all remaining dwarf planets with their moons]
:[Row 9: Definition:] Lunar: You can't be a planet if you don't have a moon [Number:] 12+ [Highlit: Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto and three of the other dwarf planets in the Kuiper belt, including one with no obviously drawn moon]
:[Row 10: Definition:] Solipsitic: Earth is the only planet [Number:] 1 [Highlit: The Earth]
:[Row 11: Definition:] Judgemental: Only the prettiest ones are planets [Number:] 6 [Highlit: The Earth, Jupiter with one of its moons (not identified), Saturn, one of ''two'' Saturnian moons in this image and Pluto]
:[Row 12: Definition:] Empiricist: Only worlds that I, author of this table, have personally seen are planets [Number:] 12 [Highlit: Mercury, Venus, The Earth, The Moon, Mars, Jupiter with its four moons, Saturn and Uranus]
:[Row 13: Definition:] Marine biologist: Only objects with oceans are planets [Number:] 6+ [Highlit: The Earth, three Jovian moons, the two illustrated Saturnian moons]
:[Row 14: Definition:] Maritime: Only objects with [next word in italics] surface oceans are planets [Number:] 2 [Highlit: The Earth and Titan]
:[Row 15: Definition:] Universalist: They're all planets [Number:] [infinity symbol] [Highlit: All drawn objects, including The Sun and all other objects including all the moons/asteroids]
:[Row 16: Definition:] Existantialist: What if space [next word in italics] itself is a planet??? [Word, in italics:] Duude [Highlit: The whole third column cell]
:[Row 17: Definition:] Spiteful: [next word in italics] Only Pluto is a planet [Number:] 1 [Highlit: Pluto]

==Trivia==
*In the [https://www.explainxkcd.com/wiki/images/archive/6/66/20250314195557%21planet_definitions_2x.png original version of the comic], there were two errors that would alter be fixed. The "Traditionalist" definition highlighted Neptune's satellite {{w|Triton (moon)|Triton}} instead of Pluto. The images of the Solar System for the "Traditionalist" and "Modern" definitions were swapped, resulting in Pluto being incorrectly highlighted in "Modern" and omitted in "Traditionalist.

*The "Judgemental" definition has seven colored objects instead of the labelled six. This mistake has never been fixed.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Charts]]
[[Category:Astronomy]]
[[Category:Space]]
[[Category:Philosophy]]
[[Category:Comics edited after their publication]]

3063: Planet Definitions

2025-03-14T22:54:50Z

172.69.79.191: /* Explanation */ Rationalise explanation formatting to more wikifriendily. (Wondering why this isn't a table, with a little extra work above the 'table' of the comic.) Edit Conflict abound, hopefully integrated after several cycles.

995: Coinstar

2025-03-08T02:33:41Z

172.69.79.191:

{{comic
| number = 995
| date = December 26, 2011
| title = Coinstar
| image = coinstar.png
| titletext = Plus they take like 9%.
}}

==Explanation==
This is another one of [[Randall|Randall's]] [[:Category:Tips|Tips]], this time a Holiday Tip.

Chocolate coins are a popular holiday candy, and thus this is another [[:Category:Christmas|Christmas comic]]. These candies are usually plain chocolate formed in the shape of coins and covered in metallic foil wrappers.

{{w|Coinstar}} machines accept all your loose coins, sort them, count them, and then give you the same amount of money in paper currency, around 9% less as it says in the title text. You may find similar machines in grocery stores and shopping malls around the US and Canada.

These machines work by vibrating a box with a series of slots along one side, which each corresponding to the sizes of standard accepted coins. The vibrations move the coins along the different slots. If they pass through the slots the coins are then fed into a mechanism with a counterweight that's balanced to test the weight to ensure that it has captured the appropriate coin. Coins of the right size but wrong weight (such as similarly sized coins of different currencies) are dropped back out into a reject chute to be retrieved by the customer. Coins that do not fit the standard sizes also get rejected in the same way. There are also various anti-theft mechanisms that prevent coins from being counted and then retrieved. Coins that meet the programmed criteria are funneled into internal repositories and are counted towards the total.

The chocolate coins in the comic appear to have damaged the machine. As the only property that the candies share with actual currency may be its appearance the machine would not be designed to handle the softer material causing the machine to malfunction and create the unusual noises presented. The chocolate may have fouled the initial vibrating tabulator; it may be that the coins are getting caught in the reject chute or are fouling the scales. In any case, an alarm has sounded, likely triggered by an electronic circuit going "pop". The alarm could also be the anti-theft system being triggered, thus causing the machine to shut down and preventing false totals from registering.

The title text suggests that the machine would take its customary 9% from the total of the chocolate coins which is ironic since the reader knows that their candy has insignificant monetary value.



==Transcript==
:[A mischievous Cueball empties a small bag into a machine.]
:''whirrrrrrr''
:''bzzt''
:[Machine makes progressively less happy noises.]
:'''''kachunk'''''
:''tshhhhhhhhhh''
:''clickclickclickclick''
:'''''GRIND'''''
:[Machine malfunctions and shuts down.]
:''pop''
:''beeeeeeeeeeeep!''
:[Text below frame]
:Holiday tip: Coinstar does not handle chocolate coins well.

{{comic discussion}}

[[Category:Christmas]]
[[Category:Comics featuring Cueball]]
[[Category:Tips]]

1106: ADD

2025-02-25T00:10:53Z

172.69.79.191: Undo revision 366759 by 172.71.218.113 (talk) If you think it's important, do it. Don't leave a stub, at least try to flesh out the first few dry bones...

{{comic
| number = 1106
| date = September 10, 2012
| title = ADD
| image = add.png
| titletext = 20 balloons float away while I'm busy permanently tying one to a tree to deal with it for good. Unfortunately, that one balloon was 'land a rocket on the moon in Kerbal Space Program.'
}}

==Explanation==
This comic appears to be a visual representation of the thought process of someone with {{w|Attention Deficit Disorder}} or ADD (Which has been renamed to ADHD, for "Attention Deficit and Hyper-activity Disorder"). Various of Cueball's thoughts or tasks that he must do are represented by balloons which are rising out of his reach. He holds the "math problem" balloon and grabs the "call mom" balloon, but notices "check oven" is rising out of his reach. He abandons the two balloons he holds to dive and grab the "check oven" balloon. Of course, this allows the other two to rise, presumably out of Cueball's reach, as the pullout reveals a plethora of other balloons already rising too high, some of which describe actions required to live, like balloons marked "breathe" or "drink water". This visualizes how ADHD makes it incredibly difficult to multi-task, prioritize, and continually work on one task.

Cueball quickly drops one task to take on another, only to jump to yet another task before that one is done; showing how the person with ADHD feels; that while they are focusing on one task, 20 others are getting away from them. The title text further reinforces this, noting that while committing to actually complete one task (represented by tying a balloon to a tree), 20 others floated away. The task he chose to complete is (as stereotypical for someone with ADHD), a task that results in no necessary accomplishment — the task is to land a rocket on the moon (Mun) in ''{{w|Kerbal Space Program}}'', a PC-based spaceflight simulator and video game. Additional humor comes from the fact that landing a rocket on the moon in Kerbal Space Program would require a lot of repetition through trial-and-error, making a long and involved task during which many other important tasks might be ignored normally.

In addition, the title "add" may also have a secondary meaning that Cueball feels that balloons/tasks are always being added, which does indeed feel like the case as his field of vision expands, resulting in an overwhelming experience.

==Transcript==

:[Cueball is holding a balloon with "Math Problem" written on it. He is running to grab a balloon labeled "Call Mom" that is floating away.]

:[Cueball is now holding both balloons, but looks over his shoulder and sees a balloon that reads "Check Oven".]
:Cueball: ''!!''

:[Cueball releases the balloons he had been holding and runs for the third.]

:[Cueball jumps for the "Check Oven" balloon and snatches it just before it is out of reach.]
:''LEAP''
:Cueball: Hah!

:[Full width panel showing 16 balloons floating away and one Cueball is holding. The balloons are different sizes and colors, and are floating at different heights. They are labeled as follows from left to right. Listed as * Label - color - height order (1 is the lowest balloon). Listed as * Label - size - size order (A is smallest)]
:*Parking Meter - blue - 11M
:*Taxes - green - 3K
:*Buy Soap - red - 12I
:*Phone Call - green - 7H
:*Relax - yellow - 6C
:*Inbox - blue - 9G
:*Clean - red - 13O
:*Beat Game - green - 4D
:*Feed Cat - yellow - 8L
:*Drink Water - blue - 15Q
:*Call Mom - red - 2A
:*Math Problem - green - 3B
:*Send Card - red - 14J
:*Check Oven (Cueball is holding this one still) - yellow - 1E
:*Engine Light - yellow - 10F
:*Read - blue - 16N
:*Breathe - blue - 5P

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics with color]]
[[Category:Psychology]]
[[Category:Kerbal Space Program]]
[[Category:Rockets]]

Talk:1: Barrel - Part 1

2025-02-22T21:06:41Z

172.69.79.191:

Doesn't his big interactive piece (#1110) refer to this one? {{unsigned|‎58.37.35.32}}
:It does. There's a note somewhere in that explanation page referring back to this page. [[User:Davidy22|Davidy22]][[User talk:Davidy22|<tt>[talk]</tt>]] 09:28, 2 December 2012 (UTC)

This comic under my interpretation is that like the kid in the barrel his mind was wandering at the time of his drawing of the comic and it reprsents his wandering mind as he may be bored and it is in the middle of nowhere but at the same time it is somewhere. but its waiting to get someplace (an island?)

--[[User:TheWeatherMan|TheWeatherMan]] ([[User talk:TheWeatherMan|talk]]) 13:57, 23 January 2013 (UTC)TheWeatherMan

:when ever I feel isolated from society, I like to contemplate the ladders I could build for them to see things from my perspective. We will never manage to teach kids how to exist in chaos, we need to outsource our thinking, share ideas, to see new options for each of the impossible answers. Sic-if is here to stay, because it's the only hint we will get of the perfection they want us to achieve. Anything less then the total perfection is unsustainable. - [[Special:Contributions/98.211.199.84|98.211.199.84]] 14:22, 3 March 2013 (UTC)

It's been over five years, so I think I should be that one annoying person who breaks unspoken streaks:
If an endless ocean were a representation of life, I'd be the one who's fasioned myself an oar (or I can just use my hands to paddle if I can't get an oar). I then tell the floating people around me, "May the waves bring you luck." I proceed to go toward a location on the horizon that appears arbitrary but is actually something really cool, and then I greet all the other people who have chosen to go here also or were brought by fate/the sea (basically synonymous). Finally, I do cool things. Anyway, this comments section has been very inactive. No purpose, just wanted to motivate y'all to set goals for yourself and let you know that good things will happen if you do. For now, though, it's night, and the others are asleep in their barrels. Good night and why did I write this [[Special:Contributions/108.162.215.70|108.162.215.70]] 07:01, 10 June 2018 (UTC)

Working theory: this IS Beret Guy. This is I think years before his first appearance, and Beret Guy is apparently younger than anyone else who isn't explicitly a child. So this is him. The youngest form of the one who had nothing but wonder...
:That DOES kind of make sense. The part where he rides the winged ferret is just the kind of weird Beret Guy thing that Beret Guy does. :) {{unsigned|ThePineapple11|12:35, 6 December 2020 (UTC)}} -ThePineapple11

I wonder how long it'll take until someone finds and replies to this comment. [[User:Qwikster|Qwikster]] ([[User talk:Qwikster|talk]]) 02:02, 5 July 2024 (UTC)
:I resisted, and slept on it, but... found, a while a go; replied... well... obviously right now. Not that it means much. [[Special:Contributions/172.70.91.158|172.70.91.158]] 10:10, 5 July 2024 (UTC)

is this guy like early cueball? [[Special:Contributions/172.71.150.157|172.71.150.157]] 03:11, 22 February 2025 (UTC) 
is the guy like early cueball? [[Special:Contributions/172.71.150.156|172.71.150.156]] 03:15, 22 February 2025 (UTC)
:As a serious answer(/a serious answer), Barrel Boy is recognised as his own character, distinct from even the earliest Cueball (and Cueball-adjacent) stick figure, by both a great gulf of style and by personality. Though the (pre-publication) artistic development of style from cartoonish-realism to barebones-stickfigurey might well have included a 'missing link' or two of Barrel Boy 'growing up' into the author-avatar/'Rob', the debut to the world (in either its pre-website order, or numbered as per xkcd.com) intermingles the two stages of (possible) evolution in a way that at least makes it clear that Randall considers them parallel art styles, not sequential. As above, there are theories that this character is who 'grows up' to be Beret Guy, while one could perhaps also directly link with the 'Jack' kid-stickfigure (named as per Jack and Jill) that pops up years later, infrequently as contrast to the contemporary Cueballs/other adults. (There's also a 'young Hairy' that pops up every now and then, from before that point, but (IMO) slightly less associable as a direct descendent.) Of course, there must be something of the artist in ''all'' Randall's drawings, by conscious of unconscious projection, so there might be a discernable 'family trait' to all of them, whether Black Hat and Beret Guy or even Stallman and Gygax... [[Special:Contributions/172.71.241.100|172.71.241.100]] 09:31, 22 February 2025 (UTC)
::Fyi, I liked your explanation so much i added it to [[Barrel Boy]]! --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 18:16, 22 February 2025 (UTC)
:::If I'd have known, I might have used slightly less fluffery (plus added the internal links you did, but I was just about to go out for the day, and was too rushed to make it shorter, snappier and better overall, or take time to hold back the purple prose), but surprising and gratifying to have just seen it appear there. "Hang on... those are ''my'' words, but I'm sure I..." ;) [[Special:Contributions/172.68.205.123|172.68.205.123]] 19:19, 22 February 2025 (UTC) <-- at one time, at least, having been 172.71.241.100
::::Yeah it was great regardless! Anyways, I don't think I've ever asked you this: i was wondering, why don't you just register an account? You could do so many more things! --[[User:FaviFake|FaviFake]] ([[User talk:FaviFake|talk]]) 20:20, 22 February 2025 (UTC)
:::::I do what I can, when I can, and have done for long enough. (Srsly, I sometimes see a decade-old IP-signed Talk comment and think "that was me!", because of a particular turn of phrase in it.) And, knowing me, if I ''had'' started off with an account, I'd have forgotten the password at some point in the last 10+ years (relying on a saved password on a machine that then went kaput a couple of years down the line), so would have had to restart the continuity like I've had to do with other places. Additional (less useful) reasons might be a) that I try never to re-use usernames across systems, and never did manage to think of a particularly apt one I'd like to use here, and b) if I was to have been a proven username of good- and long-standing, I'd have been roped into being an admin at some point (been there, done that) and, with special respect to Kynde in particular, I don't really have the desire to go that far again. But enough about me. (Especially as you don't and can't even know if I'm the same 'me', or being entirely truthful with all my "yeah, I was a BBS Sysop in the late '80s, and the combination of ruling with a firm and fair hand and the occasional practical joke got that sort of thing out of my system" posing. Pretty much truthful ''and'' pretty much posing, perhaps!) Thanks for asking, you're not the first and I'm pretty happy with the answer(s) I tend to give. And now we return you to our regularly scheduled programme... [[Special:Contributions/172.69.79.191|172.69.79.191]] 21:06, 22 February 2025 (UTC)

Talk:3020: Infinite Armada Chess

2024-12-11T09:50:19Z

172.69.79.191:

Did I do well? Added a very very basic explanation. [[Special:Contributions/172.68.147.132|172.68.147.132]] 04:25, 5 December 2024 (UTC)

Well, yes but I wonder if just one tiny fix is needed. If you replace the white side with a simplyfied artillery tower, you reinvented space invaders.{{unsigned ip|172.71.160.70|04:57, 5 December 2024 (UTC)}}

I was personally hoping for an explanation of the Infinite Armada thing, and I feel like a link to the TV Tropes page doesn't really. Explain that at all. So I would love a bit of an expansion on that part! Just want to be sure I didn't miss some reference or something. [[Special:Contributions/172.68.23.91|172.68.23.91]] 05:48, 5 December 2024 (UTC)
: Likewise. I get the comic, but I assumed the 'armada' part was a reference that I just did not get. But it seems it is just a word choice. [[Special:Contributions/172.71.102.105|172.71.102.105]] 09:39, 5 December 2024 (UTC)
:: The only "Infinite Armada" reference I can think of is ''[https://en.wikipedia.org/wiki/Star_Wars:_Knights_of_the_Old_Republic Star Wars: Knights of the Old Republic]'', which kind of makes sense because if you have a Star Forge to make chess pieces with, why wouldn't you make them all queens? [[Special:Contributions/162.158.167.159|162.158.167.159]] 18:47, 5 December 2024 (UTC)

I think that since the error was "out of bounds", not "out of memory", it's referring to indexing outside of the region of memory that the program allocated to deal with the board. This would happen since instead of addressing rank 1..8, you could address rank 9, 10, 0, or -1. Unless bounds checking is performed when converting the board coordinates into linear array indices, you'd get an out-of-bounds error (or worse, succeed in reading or modifying memory that you weren't intending to). --[[Special:Contributions/172.71.30.253|172.71.30.253]] 05:45, 5 December 2024 (UTC)
:It was "Out of Bounds memory access". That means it was trying to access a memory address that was out of the bounds of the computer, as if it were trying to access the ω-th index of the board array, which would put it out of the memory range of any computer [[User:Firestar233|guess who]] ([[User talk:Firestar233|if you want to]] | [[Special:Contributions/Firestar233|what i have done]]) 06:15, 5 December 2024 (UTC)
:: There is no hint that the bounds are those of the computer, the simplest explanation really is that the bounds are those of an array. The error message does come up. In addition, to try to access the memory at the ω-th index, you would need to construct the ω-th index itself first (which would fail or not terminate) [[User:Jmm|Jmm]] ([[User talk:Jmm|talk]]) 07:01, 5 December 2024 (UTC)
::: The specific message, "RuntimeError: Out of bounds memory access", is a WebGL error issuing from its WASM cross-platform browser implementation. This implies to me that an attempt to render an infinite chessboard failed in a fairly trivial way, because of a poor implementation. It's very unlikely that there had been a problem with the [https://github.com/official-stockfish/Stockfish/tree/master/src Stockfish playing algorithm] yet, which would have failed with a different message if it ran out of memory, such as "Killed", which is all that shells like Bash print when one of their job processes is killed by the kernel's OOM killer, or by anything else for that matter. [[Special:Contributions/172.70.215.21|172.70.215.21]] 12:58, 5 December 2024 (UTC)
:: If it were trying to access an index that was out of the range of the array, then it would probably have mentioned an index somewhere in the message, like "Out of Bounds index". However, it says that the "memory address" was "Out of Bounds," implying that it tried to access a physical memory address that was out of bounds. Anyways, it wouldn't make sense to use an unmodified version of Stockfish that would still expect on 8 rows for a larger chess board, as it's not a close approximation to having an infinite number of queens. [[User:Firestar233|guess who]] ([[User talk:Firestar233|if you want to]] | [[Special:Contributions/Firestar233|what i have done]]) 20:30, 8 December 2024 (UTC)
::: The 8x8 board geometry is hardcoded entirely throughout Stockfish and its data structures. It would be easier to introduce new kinds of pieces with different kinds of moves than change the board size. [[Special:Contributions/162.158.186.10|162.158.186.10]] 01:11, 10 December 2024 (UTC)
:::: I have no insights into Stockfish (had I programmed it, I'm sure I'd also use its handy 8x8ness to highly optimise the way data was stored, i.e. hardcode 1 byte for any 'free' location and probably pack tight the "possible moves from this spot by this piece" bit of the record, where possibly... eight possibilities for a King, etc). I interpret the comic as being of a heavily modified version, though, effectively rewritten to allow arbitrary (if not truly boundless) fairy-boards that aren't square.
:::: Tying the error down is tricky. It'll be a compiler-added failover, either of the custom Stockfish or even of the OS's virtual memory subsystem, to deal with one or more problems that is probably more than exceeding the index bounds of any malloced array structure. It could even be some issue (getting past various initial handling layers, betwixt application and hardware) that tries to access a physical RAM address that doesn't exist, which finally gets caught and 'explained' back down the line by an error-code response that gets translated into the text we see by a less hardware-aware level of application code that just knows that it's an out-of-rangeish exception that's raised.
:::: Back when I regularly did assembler programming, you'd get ''very'' good ideas of what you were doing, what you could do and what would happen if you did slightly odd things. Sometimes to your advantage (i.e. directly peeking/poking memory locations beyond the overflow limit could 'wrap around', which was an interesting shortcut to save the need to detect when you'd go out of bounds and then loop back to the start yourself), if you were careful enough about it. These days, all programming I do is softened and "cotton wool"ed by several Hardware Abstraction Layers (and obscure compiler settings, where it's too much trouble to get to know every individual handling option quite so intimately).
:::: It'd be interesting to find the ''actual'' word-for-word inspiration, but I suspect that it's just a conceptual paraphrasing of the kind of thing that only exists (as needed) in Randall's imagination, so has a fictionality and/or composite source model to it. [[Special:Contributions/172.70.90.5|172.70.90.5]] 05:28, 10 December 2024 (UTC)

Is this a reference to [https://youtu.be/rav29N0-h2c infinite chess by Naviary?] [[User:HaruruChanDesu|HaruruChanDesu]] ([[User talk:HaruruChanDesu|talk]]) 11:21, 5 December 2024 (UTC)

"it does not really need to consider the infinitely many pieces" => a chess Engine would need to consider the infinitely many pieces (or have a way to abstract them), even if some pieces are currently stuck because the engine recursively evaluates moves and counter-moves (i.e. evaluates the game up to some depth).{{unsigned ip|162.158.95.184|13:44, 5 December (UTC)}}

Is the cardinality of the set of all the pieces smaller than the cardinality of the set of all possible moves? My gut instinct says yes but I don't have the energy to muck around and see if I can prove it. If I did try I think that matrix diagonalization would be the first thing I'd try. Anybody less lazy than me on this? --[[User:Tomb|Tomb]] ([[User talk:Tomb|talk]]) 21:30, 5 December 2024 (UTC)
: The number of games is at least Beth one (cardinality of the continuum so uncountable). After some preliminary moves you can have a black queen on an otherwise empty row and a white queen in the black pawn row. Now on pairs of moves the black queen moves in its row so its column mode four is a base four digit while the white queen moves up one row to give the digits position. So we can map real numbers uniquely into games.
: The number of pieces is obviously countable.[[Special:Contributions/172.70.230.60|172.70.230.60]] 18:59, 6 December 2024 (UTC)
:: Thanks! --[[User:Tomb|Tomb]] ([[User talk:Tomb|talk]]) 19:12, 8 December 2024 (UTC)

Can someone explain the linked joke with all the extra queens? I don't understand why it's a bad position. [[Special:Contributions/172.69.59.126|172.69.59.126]] 16:49, 5 December 2024 (UTC)
:Knight to d6. [[Special:Contributions/162.158.167.175|162.158.167.175]] 17:09, 5 December 2024 (UTC)
::...is checkmate by black. White can't capture the knight with either of the two queens that attack it because they're both pinned, by black's bishop and rook. (And we know it's black's turn to move because the colored squares indicate white just moved.) [[User:DKMell|DKMell]] ([[User talk:DKMell|talk]]) 17:54, 5 December 2024 (UTC)

Expected some discussion here already on the best opening moves given a infinite board or at least the board depicted.
1. e3 e6 2. Qh5 seems a logical start, but not entirely sure what would happen after that?
Any ideas? [[User:Flekkie|Flekkie]] ([[User talk:Flekkie|talk]]) 22:56, 5 December 2024 (UTC)
:I think games will generally end in a draw by perpetual check that's something like:
:1. Qxd7+ Qxd7
:2. Qxd7+ (etc)
:It's tricky to prevent a player at a disadvantage from repeatedly sacrificing queens from further and further away down some file. [[Special:Contributions/172.68.54.138|172.68.54.138]] 02:43, 6 December 2024 (UTC)
::However, the rules of chess wouldn't cause this game to end in a draw since there are captures every turn, and captures reset the 50-move counter that triggers a draw. The players could agree to a draw - or perhaps the player at a disadvantage could hope to win by exhaustion, that is, by following this strategy indefinitely and hoping the other player collapses from weariness first. [[User:DKMell|DKMell]] ([[User talk:DKMell|talk]]) 03:27, 6 December 2024 (UTC)

:::This assumes no chess clock. Alas, what I just wrote assumes a classic chess clock. Some games use time rules that require a modern electronic clock and add time every move, which in this case brings back the "recaptures go on forever" problem. [[Special:Contributions/172.70.207.149|172.70.207.149]] 11:49, 7 December 2024 (UTC)

Hit me up when this becomes real. I would like to try this out. [[User:CalibansCreations|'''Caliban''']] ([[User talk:CalibansCreations|talk]]) 12:29, 5 December 2024 (UTC)
:It should be easy enough. You will rarely get the queens out in play from deep in the array. So maybe just put two chess boars together and put some placeholder in for queens in the extra fields. If ever a queen in the bottom row is moved, place extra queens that can now be moved into the 2-3 squares that would be outside the board...--[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 12:39, 5 December 2024 (UTC)
:It might be something one could set up in Infinite Chess, although having limits on the chessboard may be difficult. [[Special:Contributions/172.68.150.67|172.68.150.67]] 14:01, 5 December 2024 (UTC)
: Here's a finite approximation in ChessCraft: https://www.chesscraft.ca/design?id=5KM4 [[User:Promethean|Promethean]] ([[User talk:Promethean|talk]]) 15:37, 5 December 2024 (UTC)

While I understand how to play chess, I don't get the bit about "having a bunch of queens doesn't go very well". At first glance, the linked chess layout looks pretty solid. Can someone please enlighten me? Also, what does the TV Tropes link about Title Drop have to do with Infinite Armada, aside from that being the title of the comic? [[Special:Contributions/172.70.230.77|172.70.230.77]] 13:10, 5 December 2024 (UTC)
: ... Nd6. [[Special:Contributions/172.70.91.246|172.70.91.246]] 13:31, 5 December 2024 (UTC)
:: Ah, thanks. Moving the knight there puts the king in check, and moving either queen to take it exposes the king to the bishop or rook, so checkmate. [[Special:Contributions/162.158.63.38|162.158.63.38]] 15:05, 5 December 2024 (UTC)
:::<s>You are assuming that the opponent makes no moves while you spend at least three moves advancing your knight. Looks like either side can draw by always moving the king backwards whenever a queen has moved and made a hole he can move to and otherwise trying to make a new, deeper hole. Eventually he gets so far back that any attack turns into an infinite sequence of queens taking each other, with the attacker only having file attacks while the defender can retake from a rank, file, or diagonal. Any time the attacker breaks off the infinite sequence of queens taking each other to set up something else, the defender takes advantage of the break to move the king deeper and put more queens in front of him or to create more empty spaces to sidestep into when attacked. To me, this looks like a certain draw.</s> [[Special:Contributions/172.69.33.252|172.69.33.252]] 16:21, 5 December 2024 (UTC)
::::They're talking about the linked layout at https://x.com/chesscom/status/1841540380363211164, not the layout in the comic. It only takes one move for the black knight to move to Nd6 and put the white king in checkmate. [[Special:Contributions/141.101.109.167|141.101.109.167]] 20:59, 5 December 2024 (UTC)

You might be able to get the developer of fairy stockfish ( https://fairy-stockfish.github.io/ ) to add this if you ask nicely. I have seen them add several reader requests. [[Special:Contributions/172.70.211.143|172.70.211.143]] 15:46, 5 December 2024 (UTC)

Could this be a reference to the meme about "eating an infinite armada of pizza"? The wording seems too similar to be a coincidence. [[Special:Contributions/172.70.114.46|172.70.114.46]] 14:46, 5 December 2024 (UTC)

Would this guarantee a draw between two competent players who'd played the variant before, or would there be more nuance to it than there appears to be?

Can someone explain the linked joke with all the extra queens? I don't understand why it's a bad position. [[Special:Contributions/172.69.59.125|172.69.59.125]] 16:48, 5 December 2024 (UTC)
: The explanation of the linked joke is that the king appears safe at first glance, but in reality there is a simple move that wins the game for black. Moving the black knight to the top left corner of the queen square checks the king. The king cannot move to escape. Two queens are in position to take the knight and save the white king, but both of those moves expose the king to attack from other black pieces (the rook or the bishop).
:: Wow. Not only did White give Black a mate in one, they also blundered a mate in one. [[Special:Contributions/162.158.167.176|162.158.167.176]] 20:21, 5 December 2024 (UTC)

Really? This comic specifically references some obscure roblox game with like 350k visits? That can't be right. [[Special:Contributions/172.71.154.247|172.71.154.247]] 02:31, 6 December 2024 (UTC)
:I agree, it seems out of character for Randall to use something like that as a punchline. [[Special:Contributions/172.71.166.18|172.71.166.18]] 14:01, 9 December 2024 (UTC)
::Referencing a [[861: Wisdom Teeth|geeky, obscure subculture computer game]] that isn't (yet!) particularly well known..? Nope. Can't at all think why he'd suddenly do that out of the blue, just as a Genius Bonus... /s [[Special:Contributions/172.71.26.100|172.71.26.100]] 15:30, 9 December 2024 (UTC)

This was the variant played at the chess tournament held at David Hilbert's Grand Hotel. You'd think they would have struggled to fit infinitely large boards in the conference room, but they just kept moving the tables until they had enough space. [[User:RegularSizedGuy|RegularSizedGuy]] ([[User talk:RegularSizedGuy|talk]]) 08:01, 6 December 2024 (UTC)

Clarifying "Surprisingly little memory to analyze conventional Chess": Without trying to "golf" the memory requirements, a board can be represented in 64 bytes, a reversible move in three bytes (start square, end square, piece captured). 40 moves without a pawn move or a capture is a draw, so the search stack is less than 5,680 moves. Two copies of the board (current search position, a board for looking back for detecting repeated positions), a few pointers for searching for moves to try: 20K of memory is plenty to search the entire Chess tree. And a truly unimaginably huge finite amount of time. (Golfers, start your carts!) [[Special:Contributions/172.68.55.12|172.68.55.12]] 12:08, 6 December 2024 (UTC)

Queen to A9.56x10^14 -[[User:Psychoticpotato|P?sych??otic?pot??at???o ]] ([[User talk:Psychoticpotato|talk]]) 13:47, 6 December 2024 (UTC)

Seems like a trivial win for white? Start w/ scholar's mate 1. e5 ... 2. Qh6, and just keep throwing queens at the king. It's much easier for the infinite queens to attack than to block and defend. [[Special:Contributions/172.71.154.76|172.71.154.76]] 18:21, 6 December 2024 (UTC)
:The problem is 1. e5 h6 2. Qxh6 Rxh6, if you keep trying to win h6 you’ll run out of queens that can move diagonally and black has an infinite supply moving vertically. 2. Qg4 Ng6 3. Qce2 seem like the logical next three moves? Except now black has a free move and a knight out. So at least it doesn’t seem trivial. I do think these games will be shorter than regular chess if they lead to a result, because long series of moves will tend to release the infinite queens. {{unsigned|Geoffk01}} 23:13, 6 December 2024 (UTC)

I cannot image this is not trying to reference https://www.youtube.com/watch?v=rSCNW1OCk_M , which recently resurfaced again. {{unsigned ip|172.70.114.35|18:57, 6 December 2024 (UTC)}}

I can't help but wonder if this might be in some way related to a known issue with stockfish, where if there are too many available moves in a given position, it causes a buffer overflow (see https://github.com/official-stockfish/Stockfish/pull/4558). This doesn't actually apply here, but it feels like there could be a relation

2735: Coordinate Plane Closure

2024-11-11T00:37:15Z

172.69.79.191: It's pretty much a Flatland thing. Though the clincher for my undoing the removal is that the category was removed from two other comics with very obvious connections, without stated reason, so now I'm inclined to think it's a bad faith removal.

{{comic
| number = 2735
| date = February 8, 2023
| title = Coordinate Plane Closure
| image = coordinate_plane_closure_2x.png
| imagesize = 271x376px
| noexpand = true
| titletext = 3D graphs that don't contact the plane in the closure area may proceed as scheduled, but be alert for possible collisions with 2D graph lines that reach the hole and unexpectedly enter 3D space.
}}

==Explanation==
This comic is a "Math Notice," which is presumably a warning or reminder for mathematicians or others who interact with the field of mathematics, in a similar way to how a "Travel Notice" may prewarn drivers of planned road closures for repairs (or [https://www.cameroncountytx.gov/spacex/ rocketry]). It also has similarities to that of a {{w|Notice to mariners}} or {{w|NOTAM|air missions}}, where nautical or aeronautical navigation might be impinged by an area (or volume) that should be kept clear from in the near future, and to notices from websites or software providers about planned maintenance, which alert users about upcoming outages. Specifically, this notice advises those who are using the coordinate plane to avoid drawing any graphs in the area with a hole until the damage is patched or fixed.

The joke may have been inspired as a response to the {{w|2023 China balloon incident}}, which occurred a few days earlier. This had occasioned one of the largest temporary flight restrictions, with a closed airspace as a response, in U.S. history.

{{w|Coordinate planes}} are used in math for drawing graphs. The joke here is that a small section has been "closed for maintenance," likening the concept of a coordinate plane to an actual physical platform used by math, which is therefore vulnerable to damage such as is shown in the comic. In reality, the coordinate plane cannot be damaged as it is not a tangible thing.{{citation needed}}

Closure in mathematics can be a term relating to sets, specifically operations on sets, and a coordinate plane is a particular set of numbers. A set is closed under an operation if all the "answers" to the operation are also in the set. The coordinate plane is said to be closed under vector addition for example - adding together any two coordinates produces another coordinate in the plane. Many functions and operators may be said to have closure on the real plane, and this comic may be a pun on that term. However, if there actually is a hole in the plane, then suddenly the plane will no longer exhibit closure.

Also related to closure is the {{w|closure problem}}. Put simply, the closure problem is to find the highest or lowest weight of a closure in certain types of graphs. This comic may also be talking about the closure problem, as it talks about a hole in the graph, and to minimise it would be referring to the closure problem.

Closure can also be used in another sense, relating to the topology of a set; roughly speaking, a description of what parts of the set are "close" to others. In this sense, if one takes the closure of a plane with a hole, the result is indeed an intact plane, provided the hole is sufficiently (infinitesimally) small.

The title text notes that 3D graphs that cross the relevant x and y coordinates, but with non-zero z coordinates whilst in that zone, should be fine, since the hole only exists in the plane where z = 0. However, if they pass close - i.e. the z coordinate is small in this region - they should be wary of two dimensional graph lines suddenly becoming three-dimensional and interfering with them. This could be because they have intentionally entered three-dimensional space to avoid the closure, or possibly they have inadvertently been 'launched' above/below the plane by the torn and warped edges of the surface. Or they simply fell into the hole, thus entering 3D space. This is similar to warnings to road traffic in open lanes being warned of traffic merging from lanes that have been closed due to works or any other general warning of increased congestion upon a parallel route used as a diversion.

The concept of 2D objects suddenly entering 3D space — in a way that creates interesting drama and conflict — is the subject of a book, Flatland, that Randall has referenced repeatedly, such as in [[721: Flatland]].

In [[2956: Number Line Branch]], mathematics is similarly treated as public infrastructure.

==Transcript==
:[A coordinate graph is shown with both axes unlabeled but with two labeled ticks. In the middle of the shown area of the graph there is a hole torn in the white "fabric" of the graph's plane. It has jagged edges and lines runs away from the hole in all directions. The area visible through the hole is covered in thin gray lines, and the edges of the hole cast shadows onto the surface below. Two points are marked on the graph at coordinates (X,Y) of (1.5, 1) and (2, 1.5). These two dots marks two of the corners of a square drawn with gray dotted lines, The square completely surrounds the hole. Above the graph there is a very large heading, with black danger triangles with exclamation marks in them, on either side of the heading. Below this there are three lines of text. And below the graph there are four more lines of text.]
:<big>⚠ Math Notice ⚠</big>
:The coordinate plane will be closed Thursday between (1.5, 1) and (2, 1.5) to repair a hole.
:Labels on Y-axis ticks: 1 2
:Labels on X-axis ticks: 1 2
:If your graph uses this area, please postpone drawing until Friday or transform it to different coordinates.

{{comic discussion}}

[[Category:Charts]]
[[Category:Math]]
[[Category:Flatland]]

721: Flatland

2024-11-11T00:32:50Z

172.69.79.191: Undo revision 356381 by 172.69.23.72 (talk) No, it's a categorical reference.

{{comic
| number = 721
| date = March 31, 2010
| title = Flatland
| image = flatland.png
| titletext = Also, I apologize for the time I climbed down into your world and everyone freaked out about the lesbian orgy overseen by a priest.
}}

==Explanation==
This comic is a reference to the satirical novel ''{{w|Flatland|Flatland: A Romance of Many Dimensions}}'', in which a society of flat shapes live in a {{w|Two-dimensional space|2D}} world -- a recurring reference in XKCD comics. Half the book is a direct satire of {{w|Victorian era|Victorian}} society, and the other half explores the experience of discovering a new dimension, where a sphere introduces a square (named A. Square) to {{w|Three-dimensional space|3D}}. [[Cueball]] appears to have taken the place of this sphere, and the comic takes place after the square knows the third dimension exists.

Humans will never fully be able to fully grasp the concept of a fourth spatial dimension (at least not in the foreseeable future), but there are ways of squashing or slicing four dimensions to create partial visualizations of 4D space. ''{{w|Miegakure}}'' is a yet-to-be-released 4D game that uses cross-sections of 4D space. Cueball attempted to play a pre-release version of it, but after having his "mind blown", he gained more sympathy for A. Square, who'd had similar trouble understanding 3D. A. Square accepts his apology.

The joke here is that Cueball was being silly and drew lines on A. Square to make him look like {{w|SpongeBob SquarePants (character)|SpongeBob}}, which did not make the square happy. Cueball apologizes again. It could also possibly be lethal as, in ''Flatland'', it is shown that the flat surfaces of the shapes contain their organs.

The title text is a third apology for when Cueball crawled down into the second dimension. Being a stick figure, he is composed of a circle and straight lines.{{Citation needed}} In Flatland, circles are priests (Flatland's highest social level. Actually, the highest aren't circles; in fact they are actually many-sided polygons that look identical to a true circle in Flatland.), and all women are lines; thus, to a watcher in Flatland, Cueball would look very much like a priest above many connected women, which may look like a lesbian orgy.

Also worth mentioning is the pun in the greetings: A. Square - being on ground level - asks Cueball above him how he's doing by asking what's up.

==Transcript==
:[Cueball talks to a square on the ground.]
:Cueball: Hey, A. Square. How's Flatland?
:A. Square: Still flat. What's up?
:Cueball: I just spent an hour playing a demo of this 4D game called Miegakure.

:[In a frameless panel, a character in Miegakure jumps around the 4D landscape.]
:Caption above the panel: Trying to jump from block to block in four dimensions hurt my brain.

:[Cueball continues talking to A. Square on the ground.]
:Cueball: So I apologize for giving you a hard time when you were slow to understand 3D space. I sympathize now.
:A. Square: It's okay.

:[Zoom in on Cueball's head]
:Cueball: Also, I apologize for drawing arms, legs, and eyes on you to make you look like SpongeBob. That was out of line.
:A. Square: Yes, it was.

==Trivia==
*There is actually a [https://spongebob.fandom.com/wiki/Frankendoodle ''SpongeBob SquarePants'' episode] that features a flat creature that resembles a crude drawing of SpongeBob.

===UniXKCD===
*This comic was released on March 31, 2010 and was still up on April 1st, 2010.
**On {{w|April_Fools%27_Day|April Fools' Day}} in 2010 [[Randall]] altered the website to mimic a {{w|Unix}} command line interface.
**This interface is still available on [https://uni.xkcd.com uni.xkcd.com] and the source code is available on [https://github.com/chromakode/xkcdfools GitHub].
**See more on the [[UniXKCD]] April Fools' Day joke.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Comics featuring Cueball]]
[[Category:Geometry]]
[[Category:Video games]]
[[Category:Homosexuality]]
[[Category:Sex]]
[[Category:Flatland]]

Talk:3001: Temperature Scales

2024-10-25T21:44:53Z

172.69.79.191: Ha, I messed up describing my declension terms!

Shouldn't Rankine say "0ºR is set to absolute zero"? {{unsigned ip|172.70.230.29|22:58, 21 October 2024 (UTC)}}
:Yep. [[Special:Contributions/162.158.186.253|162.158.186.253]] 04:38, 22 October 2024 (UTC)
:Furthermore, should it be 0°R or just 0R (no °)? I've been told that Kelvin doesn't use degrees because it's an absolute scale, so a) is this true and b) should it apply to Rankine? [[Special:Contributions/172.71.211.54|172.71.211.54]] 14:44, 24 October 2024 (UTC)
::Kelvin is rather strange, for reasons never totally explained. It's "the Kelvin scale", but the unit is "kelvin" and I never got on with the official absence of the ° symbol by the "K". I was always taught to ''say'' "degrees kelvin" (for temperatures) and "kelvin degrees" (for a change/range of temperature) in order to not cause confusion and technical misunderstandings (''perhaps'' easier to contextualise when down in writing?) but no accounting for taste, or possibly official laziness.
::On the basis that Rankine is not kelvin (whatever the reason for how kelvin is what it is), I would use the degrees, as I would any other absolute scale (whether it be an adjusted form of °Rø or °Ré or whatever else might be invented), because kelvin is just inexplicably (to me, and to others) ''the'' exception to absolutely every other reasonably equivalent contemporary measure, including capitalisation. YMMV! [[Special:Contributions/172.70.162.2|172.70.162.2]] 19:53, 24 October 2024 (UTC)
:::0ºRa, not 0ºR. [[Special:Contributions/172.70.206.157|172.70.206.157]] 02:16, 25 October 2024 (UTC)
::::Can be either. Perhaps best to use °Ra (in ambiguous context) to avoid ''possible'' confusion with °Ré and °Rø, but probably less important when both those two are also listed alongside (except for wondering what, if anything, is a typo, bad handwriting or other error). [[Special:Contributions/172.69.194.12|172.69.194.12]] 11:01, 25 October 2024 (UTC)
::::It's easy if you think about it like "meter". You usually say "meters" not "the meter scale" although both are correct. Scientists and engineers who use them daily call them "kelvins", not "kelvin" unless following a number. You wouldn't say "We need to measure this room in meter." Someone keeps reverting me on this, and they're wrong, but I don't care much anymore. I'll probably fix it next month or something. [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 21:10, 25 October 2024 (UTC)
:::::"Americans typically measure temperatures in Fahrenheits, whilst Europeans use Celsiusses..." hmm, no, that doesn't sound right at all. (Celciuses? No, wait. Celcii! Masculine Nominative Singular changed to the Plural, if I've got my Latin declensions right. But still doesn't sound right. Maybe I also need to use "Fahrenheit''en''"..? Wait, wasn't he born Polish, so that means...)
:::::Seriously, I think that if you talk of "measured in [the scale of] Celsius" you should probably talk of "... in [the scale of] Kelvin" (using the capital for the scale). According to the {{w|Kelvin#Orthography|orthography}}, you'd be right to specify "50 kelvins" (c.f. "50 degrees [whatever non-Kelvin measure]" ''or'' "50 [whatever non-Kelvin measure] degrees" for a range), but talking ''about'' the scale would definitely call for a simple "Kelvin". [[Special:Contributions/172.68.205.135|172.68.205.135]] 21:39, 25 October 2024 (UTC) (PS., I'd also say "metre(s)", but then I'm British... which might also colour (or 'color') my personal grammatical sensibilities. But oh what fun you lot seem to have had with this whole issue!)

yo,i thought comic 3000 was anticlimactic so randall would make this one COOL but sadly not
Same. Hope he does something cool for 3072.[[Special:Contributions/172.69.134.225|172.69.134.225]] 23:44, 21 October 2024 (UTC)

really he didn't do anything special for this either? come ON randall if you don't do something cool for comic 3072 i will come to your house personally and yell at you [[User:RadiantRainwing|RadiantRainwing]] ([[User talk:RadiantRainwing|talk]]) 23:57, 21 October 2024 (UTC)

 
What's random about Fahrenheit? (Answer: nothing.) 0F is the freezing point of brine, 100F (or 98.7) is the human body temperature. [[Special:Contributions/172.68.54.65|172.68.54.65]] 00:00, 22 October 2024 (UTC)
:What concentration of brine? (And which specific salt... No, not NaCl, as you might presume but NH4Cl!)
:And body temperature varies a lot ('typically' 36.5–37.5°C or 97.7–99.5°F, though even this range is thought to be too small), across genders, individuals, time of day ''and'' which orifices/surfaces you try to measure it from. (Originally, it was set so that '''90°F''' was to be the 'best guess' of human body temperature. It gradually changed, including via various {{w|Human body temperature#Historical understanding|compounded misunderstandings}} so that the best you can say is that 100°F is arbitrarily ''slightly above'' most afebrile human body temperature measurements.)
:Celsius might be a bit off (arguments about triple-point or STP freezing, etc), but it still has far more physical logic to it. [[Special:Contributions/172.70.160.188|172.70.160.188]] 01:14, 22 October 2024 (UTC)

Sorry, Randall, for my comfort, Fahrenheit is the least cursed. It's the best scale to use for my personal use, especially when hearing the weather report and deciding what to wear outdoors: temp in the 80's - no jacket. temp in 70's - maybe a windbreaker if it's breezy. 60's - sweater weather. 50's - medium weight coat. 40's - winter coat. 30'3 - winter coat with scarf and gloves. 20's - multiple layers. teens - stay indoors. None of the other scales provide such convenient distinctions for my daily life. Kelvin is great for astro physics or super conductivity, but useless for any common uses. Celsius is great for hanging out with the Euro crowd but still not so useful to scale my home thermostat. I judge Fahrenheit as 1.0 for cursedness. [[User:Rtanenbaum|Rtanenbaum]] ([[User talk:Rtanenbaum|talk]]) 14:19, 22 October 2024 (UTC)
:I conveniently use Celsius in tens, also. Negative °C: Cold; 0-10°C: Nippy; 10-20°C: Generally pleasant; 20-30°C: Too warm to exert oneself; 30°C+: ''Definitely'' too warm. [[Special:Contributions/172.70.86.205|172.70.86.205]] 15:24, 22 October 2024 (UTC)

Personally, I'm most disappointed that {{w|Delisle scale}} was not represented... [[Special:Contributions/172.70.160.188|172.70.160.188]] 01:14, 22 October 2024 (UTC)
: I was so hoping for a {{w|Planck temperature}} quip. Like: "Water freezing point: 0; Water boiling point: 0; Notes: 1 = highest possible temperature (1.4E32K) where thermal radiation creates black holes; Cursedness: 0/0" [[Special:Contributions/162.158.164.184|162.158.164.184]] 01:27, 22 October 2024 (UTC)
:: Same here. Freezing is 0.000000000000000000000000000001928 and boiling is 0.0000000000000000000000000000026338. [[User:DanielLC|DanielLC]] ([[User talk:DanielLC|talk]]) 03:38, 22 October 2024 (UTC)
::: Wow, those are even smaller than the IEEE floating point representations of 1-1.0/3*3! [[Special:Contributions/162.158.90.109|162.158.90.109]] 03:59, 22 October 2024 (UTC)
:: The Planck temperature quip is definitely well deserved. Good catch! [[User:Mumingpo|Mumingpo]] ([[User talk:Mumingpo|talk]]) 17:24, 23 October 2024 (UTC)
I guess I was wrong in my comment on the last comic. sigh. -[[User:Psychoticpotato|P?sych??otic?pot??at???o ]] ([[User talk:Psychoticpotato|talk]]) 01:16, 22 October 2024 (UTC)

It's actually spelled {{w|Wedgwood scale}}, not Wedgewood. [[User:Wilh3lm|Wilh3lm]] ([[User talk:Wilh3lm|talk]]) 01:17, 22 October 2024 (UTC)

I still call the modern version of the "Celsius" scale "centigrade", but if people start nitpicking, I'm happy to switch to "Carolus" to avoid ambiguity. For some reason that tends to annoy people more though. [[Special:Contributions/172.68.22.191|172.68.22.191]] 01:32, 22 October 2024 (UTC)

Every temperature scale is equally "random" as every other scale. People always say that Celsius is so much better because it's defined by the phase changes of water. Okay, cool...why should THAT of all things be what we use as the base for a system of temperature measurement? And, who cares? I'm a ''Homo sapiens'', not a water molecule. If anything we should use the freezing and melting points of humans as our two reference points for temperature (which, I must say, Fahrenheit approximates better than Celsius, assuming 0 and 100 are your points "A" and "B"). [[User:Pie Guy|Pie Guy]] ([[User talk:Pie Guy|talk]]) 03:42, 22 October 2024 (UTC)
: Every temperature scale is arbitrary, but since boiling and freezing water is a thing humans have a lot of experience with it makes sense to use that as the reference point. At least it makes more sense than whatever the coldest recorded temperature in Fahrenheit's home town was, because he didn't like negative numbers [[Special:Contributions/172.70.250.23|172.70.250.23]] 03:56, 22 October 2024 (UTC)
::Planck temperature (as above) is probably the least arbitrary, and some would say it is to some extent free from arbitrariness. However, it's completely impractical for everyday use (as above.) [[Special:Contributions/172.69.34.138|172.69.34.138]] 04:31, 22 October 2024 (UTC)
:::Do the physics of black holes or neutron stars involve Planck temperatures greater than 0.0000001? [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 07:23, 22 October 2024 (UTC)
::::Chat Gippity told me:

:::::Black holes and neutron stars do not typically involve temperatures reaching the Planck scale. While both objects exhibit extreme physical conditions, their temperatures are far below the Planck temperature, even though they can be incredibly high compared to everyday phenomena.

::::: - **Neutron stars** have surface temperatures in the range of millions of Kelvin, and the core can reach even higher, possibly up to a few billion Kelvin. These temperatures are still vastly lower than the Planck temperature.

::::: - **Black holes**, especially the smaller ones, can emit Hawking radiation, with temperatures inversely proportional to their mass. However, the temperature of even a very small black hole is still far below the Planck temperature. Hawking radiation is not expected to reach temperatures close to the Planck scale under normal circumstances.

::::: The Planck temperature (TP=1) represents an energy scale so extreme that no known physical models, including those describing black holes and neutron stars, operate near or above this threshold. Temperatures reaching **0.0000001 TP** (or 1.416 × 10^26 K) would still be beyond current observational and theoretical frameworks related to these cosmic objects. A quantum theory of gravity would be required to describe physics at or near the Planck temperature, which remains speculative and is far beyond the conditions found in black holes or neutron stars.

::::[[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 08:46, 22 October 2024 (UTC)

If the °X scale is based on the temperatures of Earth from all time (for some definition of "Earth"), then the scale is very hard to define and highly impractical. The earth appears to have gotten to more than 2,300 Kelvin (hot enough to melt steel and platinum and to boil lead) and while I can't find any sources for the lowest temperature, I imagine it is lower than -100°C. The recorded minimum, maximum and average temperatures appear to be around -89.2 °C, 56.7 °C and 15 °C respectively. This would make the scale somewhat useful, but this would make typical values between 41 °X (cold winter's day) and 68 °X (hot summers day) which I think is pretty cursed. I recommend the clearly superior °Y, based around average temp at 0 °Y, low at -100 °Y and high at 100 °Y. These would be measured by the yearly high, low and mean temperatures averaged per person. Then saying "It's 2 times colder than yesterday" would have some reasonable meaning. --[[Special:Contributions/198.41.236.147|198.41.236.147]] 04:01, 22 October 2024 (UTC)
:"''Record'' ... surface temperature" implies it was recorded. [[Special:Contributions/172.68.22.9|172.68.22.9]] 04:08, 22 October 2024 (UTC)

How do you all feel about adding an additional column for room temperature 22C/72F?
{| class=wikitable style="text-align:right;"
! scope="col" | Unit
! scope="col" | Room temperature
|-
| Celsius || 22
|-
| Kelvin || 295
|-
| Fahrenheit || 72
|-
| Réaumur || 18
|-
| Rømer || 18
|-
| Rankine || 531
|-
| Newton || 7
|-
| Wedgwood || -7
|-
| Galen || 0
|-
| ''Real'' Celsius || 78
|-
| °X || 59
|}

Or 0.00000000000000000000000000000208 °Planck, lol. [[Special:Contributions/108.162.245.211|108.162.245.211]] 05:36, 22 October 2024 (UTC)
:I feel like decigalens would be the most practical unit. Who's with me? [[Special:Contributions/162.158.186.5|162.158.186.5]] 06:20, 22 October 2024 (UTC)
::It's interesting; calculating the equilibrium temperature (with 2.05 and 4.24 being used for the heat capacities of ice and boiling water) gives 67... If I use water that's about to freeze and steam, I get 31. [[Special:Contributions/172.69.0.178|172.69.0.178]] 07:59, 22 October 2024 (UTC)
:::Would you please explain in more detail? [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 09:03, 22 October 2024 (UTC)
:::: The equilibrium temperature of a mixture (?) of equal quantities of ice at 0 C and water at 100 C (with the heat capacities 2.05 and 4.24) is 67 C; if I use the data for water at 0 C and steam, I get 31 C. Additionally, if I use equal volumes, I get 68 (which isn't much different.) [[Special:Contributions/172.69.0.178|172.69.0.178]] 17:15, 22 October 2024 (UTC)
:::: One can obtain 0 = 22 C by setting the heat capacity of ice to be 39 and that of water to be 11. For any particular "normal temperature" ''R'' °C (that is, the temperature at 0 is ''R'',), I find that ''x'' °C = 50''R''(''x''+4)/(''x''(''R''-50)+200). In particular, for ''R'' = 22, we get (1100+275''x'')/(50-7''x''). [[Special:Contributions/198.41.236.163|198.41.236.163]] 05:58, 23 October 2024 (UTC)
::How about Tnew=0.1694×degC+46.25; degC=(Tnew-46.25)/0.1694, where 0 is absolute zero and 50 is room temperature? (Freezing point of water: 46.25; Boiling point of water: 63.19) [[Special:Contributions/162.158.186.248|162.158.186.248]] 05:21, 24 October 2024 (UTC)
:I would absolutely pull the trigger on an additional column if I didn't think it would further screw up what are most probably extremely cursed mobile portrait renderings of the table. How about a Trivia section? [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 08:44, 24 October 2024 (UTC)

Question regarding the X scale - when it‘s defined by *three* (somewhat, implying average is real and not just calculated by (max-min)/2)) independent points, how will linearity be achieved? [[Special:Contributions/162.158.155.76|162.158.155.76]] 05:43, 22 October 2024 (UTC)
[[File:Explanation length.png|right|thumb|Or click "[Expand]" in the bottom right table cell Derivation.]]
:Please see [[2701: Change in Slope]]. [[Special:Contributions/172.70.206.179|172.70.206.179]] 05:50, 22 October 2024 (UTC)
:Sure, "a linear scale between each point":
[[File:XvsC.png|thumb|left|Here you go. [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 06:33, 22 October 2024 (UTC)]]
{{clear}}

The reference for the average surface temperature, https://www.space.com/17816-earth-temperature.html, suggests it has increased above 15°C. What value should we use in late 2024? [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 07:30, 22 October 2024 (UTC)
:The [https://wmo.int/media/news/earth-experiences-warmest-day-recent-history World Meteorological Organization], [https://www.carbonbrief.org/state-of-the-climate-2024-now-very-likely-to-be-warmest-year-on-record/ Carbon Brief], and [https://climate.copernicus.eu/new-record-daily-global-average-temperature-reached-july-2024 Copernicus Climate Change Service] suggest 17.16°C. [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 07:42, 22 October 2024 (UTC)
::Updated water temperatures, Derivation, and graph. So we've already had more than the +2°C warming we were trying to avoid in 2019? [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 08:05, 22 October 2024 (UTC)
::: The +2°C (or +1.5°C that we were originally supposed to be avoiding) is over some (undefined) number of years, though, which allows us to ignore the fact that we're cooking ourselves by repeatedly saying 'Oh, but it doesn't count ''yet''.' [[Special:Contributions/172.70.91.62|172.70.91.62]] 11:13, 23 October 2024 (UTC)
Regarding [https://www.explainxkcd.com/wiki/index.php?title=3001%3A_Temperature_Scales&type=revision&diff=353635&oldid=353632], are the average surface temperatures from the sources supposed to be yearly or overall averages? [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 09:06, 22 October 2024 (UTC)
:According to https://climate.copernicus.eu/climate-indicators/temperature the global average near-surface temperature in 2023 was 14.4 + 0.4 = 14.8°C. (see Figure 1 and click "Increase above: [1991–2020 reference period].") [[Special:Contributions/172.68.22.8|172.68.22.8]] 21:06, 23 October 2024 (UTC)

where is the interactive epic 3000 comic we should've gotten? This one's cool but 1000 seemed to have more effort in it and 2000 was at least tangetially related. Does Randall just not like making these anymore and is only making more comics as a business? [[Special:Contributions/108.162.238.185|108.162.238.185]] 12:14, 22 October 2024 (UTC)
:The comic is free on the website and it doesn't have ads; although the comic is part of his "brand" there are many more profitable things he could be doing with his time, and yet he continues to update it every Monday, Wednesday, and Friday. I just don't like the idea of claiming that a creative person "should" produce any particular thing to satisfy their fans. He's a busy guy! Maybe he's working on a book, or a Scientific American article, or a TV show. He's under no obligation to give us anything, and maybe one day he'll stop making xkcd altogether; that's his choice. Sorry to single you out; I know a lot of people feel the same way as you do, but to me it doesn't make sense. He's not a content machine--he's a guy who started posting sketches on the internet. [[User:Dextrous Fred|Dextrous Fred]] ([[User talk:Dextrous Fred|talk]]) 15:23, 22 October 2024 (UTC)
::Sorry if I sounded overly brash, I wasn't trying to imply "wahhh no special entry wahhh", I was just wondering if Randall still likes to make these or if he doesn't, mainly because he just didn't do anything special, which feels like he just didn't care. I wasn't trying to imply Randall should just do it for the fans[[Special:Contributions/108.162.238.80|108.162.238.80]] 17:52, 22 October 2024 (UTC)
:::It ''could'' be that 3000 (or even 3001) ''was'' going to be special but, as fairly frequently with April Fool 'specials', it just wasn't doable on time. (If it's still considered fixablez it might pop up sometime before 3020 or so. Or, if transferable to another occasion (rebranding the obvious "3000!"ness), held over until Haloween, Christmas, April or 4000, perhaps with additional perfections.)
:::Hard to know, unless Randall (or his technical collaborators) say anything. And it's probably not worth doing so right now. Maybe "Hey guys, this ''was'' going to be #3000!" might accompany its eventual emergence, but also maybe not. Does it really matter? [[Special:Contributions/172.70.85.139|172.70.85.139]] 13:03, 23 October 2024 (UTC)

Is this the first list-style comic where every single entry is real? (Usually he has several joke entries.) [[Special:Contributions/172.70.114.182|172.70.114.182]] 14:26, 22 October 2024 (UTC)

Where would [[1923: Felsius|Felsius]] go on this list?

One can find a smooth function for °X, namely, (477879''x''-17634840)/(3341''x''+197700), which takes °X and returns °C. The inverse is (-197700''x''-17634840)/(3341''x''-477879). Should this be included in the wiki article? Or maybe another way of fitting it (like exponential) should be used. [[Special:Contributions/172.69.0.165|172.69.0.165]] 06:27, 23 October 2024 (UTC)
:It says "a linear scale between each point". [[Special:Contributions/172.70.210.130|172.70.210.130]] 21:09, 23 October 2024 (UTC)

Should it be noted that in the first _What If?_ book, there's a reference to units and how much Randall loathes rankine? Someone can go take the book and cite it; it's in one of the early pages [[Special:Contributions/172.64.236.10|172.64.236.10]] 08:45, 23 October 2024 (UTC)

I remember it being drummed into us in school physics (admittedly over 50 years ago) that 0 Celsius is defined as the melting point of ice, not the freezing point of water (presumably because of supercooling). [[Special:Contributions/172.70.160.189|172.70.160.189]] 08:49, 23 October 2024 (UTC)

It seems he wrote "Earths'" (plural possessive) instead of "Earth's". [[Special:Contributions/141.101.98.151|141.101.98.151]] 08:58, 23 October 2024 (UTC)

What? No gas mark? It's linear for temperatures over 275°F but inverse powers of 2 below That's pretty cursed, but I still put it in my unit conversion app. It's only used in gas stoves in a few countries, so it doesn't come up very often. By the way, boiling is 1/5.7358 and freezing/melting is 1/843.3572. Interestingly, France has it's own stove temperature scale that seems to be based on °F.

Also, my understanding is that 7.5 and 32 aren't random. Both Romer and Fahrenheit put numbers on things so that freezing/melting of water and "Normal human body temperature", which was thought to be standard at the time, would be some number X (15 for Romer and 64 for Fahrenheit) and the water thing would be to be X/2 and NHBT would be X/2+X. Pretty nerdy. Sadly, the calibration was off and 212 degrees for boiling was found to be less cursed. But I could be wrong.[[Special:Contributions/172.68.54.138|172.68.54.138]] 20:39, 23 October 2024 (UTC)
:Re: water/ice point 'random number', I think it's more that it wasn't considered "special", such that "On my scale, that will be zero" (or whatever choice of handily round number, including zero, some scale-setters allocated to the BP of water).
:After all the other messing about ("my zero will be that of brine!", etc), obviously then the ~0°C equivalent would ''have'' a number, and ''perhaps'' there would then be a slight change to make it a ''whole'' (or easy-fraction) number for convenience's sake, but (before the concept of binary computers) there's not much special about landing on the number 32, for what is actually a temperature that is quite significant to the human experience, and less so with 7-''and-a-half''.
:Maybe landing on 90°F (at one time) for body temperature (and 180 F° ''between'' MP and BP) was considered useful as the analogue to angular-degrees where 90 (and 180) indeed features significantly, but I don't think there'd have been too much fuss if the value would have turned out to be 60(/120), also with plenty of handy factors to divide by, 70(/140), without so much, or whatever number(s) happened to depict one realistic real-world measurement that (overall) has no reason to have a factor-based relationship with various quite separate phenomenon measurements.
:''And'' it went through several {{w|Human body temperature#Historical understanding|'corrective' iterations}} so that even its handy relationship with 'about 100°F' can be said to be an incidental accident, at best, unless we do something like Randall's °X scale and actively triple-tie the central value of the slope(s) to be exactly something useful by using the "currently accepted mean human body temperature (given various complicated caveats)".
:It's pretty much all random, in the same way that only because of anthropocentric choices of 'standard' time and distance measurements is the speed of light 'pretty much' 3×10⁸ m/s (a handily round value that works well enough for most purposes, even after back-standardising its component SI measurements to make "actually, precisely 299792458" the ''proper'' answer, and [https://conversion.org/speed/speed-of-light/furlong-per-fortnight it could be far worse...]). Avagadro's number never had it so good (6.022(+change)×1023...? ...where's the handily mnemonic value in that?), and Pi (in this universe's system of fundemental mathematics) clearly never ever had a chance! And, on {{w|Mount Everest#19th century|at least one occasion}}, such happenstance numeric roundedness in its exactitude (29''',000''' ft) was considered actually quite awkward... [[Special:Contributions/172.70.91.90|172.70.91.90]] 21:33, 23 October 2024 (UTC)
::My understanding is that the brine thing was an ad-hoc justification when the scale was presented to the Royal Society. It may have seemed less cursed. But yes, there's a BIG reason for using 32 or 64, halving a distance is trivial and as an instument maker, Fahrenheit would have found that attractive. Mind you, I'm getting this from the Straight Dope, so I could be a dope getting it straight. https://www.straightdope.com/21344240/did-cecil-err-in-explaining-the-significance-of-zero-fahrenheit [[Special:Contributions/162.158.10.189|162.158.10.189]] 20:04, 24 October 2024 (UTC)

Ok, then, regarding {{diff|353895|this edit}} (and the original IP-led one(s) that even made huge and revert-necessary changes), was it ''really'' intended to get rid of whole paragraphs such as "Randall also fails to specify what happens with temperatures[...]" that had nothing to do with the numeric adjustments? When I see that, I see mistakes (especially in light of the "clobber" that happened, where typos reappeared and other things became unexplained/worse-explained once more). — Basically, if your edit summary is nust about updating baseline data, and the resulting maths, I don't expect (maybe good, maybe bad) edits to unrelated bits. Or I may (and have) presumed accidental (or deliberate?) carelessness that I'd rather not try to go back to first principles to re-re-check for the editor concerned. That is all. At least try to justify enough of your edit in its own way, even if it means diving in several times to get enough space to summarise your whole "why" to each tweak. [[Special:Contributions/172.68.186.104|172.68.186.104]] 22:44, 23 October 2024 (UTC)
:Yes. I have re-removed the removals piecemeal with individual edit summaries for clarity. Many of them involved detailed obscure technical misunderstandings, such as whether the Vostok and Death Valley measurements were surface temperatures (the WMO says they are, and there are the WMO's photos of the observation stations in the linked references now) which combined with the incorrect yearly average global mean temperature, added five paragraphs unnecessarily. [[Special:Contributions/172.68.23.152|172.68.23.152]] 01:46, 24 October 2024 (UTC)
::Definitely some points made (some incorrect, "ne er" was ''obviously'' more just a basic typo of "never", not my attempt to use "ne'er" for no good reason, and my attempt to fix that and some other bits ran into a set of Edit Conflicts ...hope I caught all the remaining ones when I finally could try again on the settled-down page) and I've blended answers to your objections in while giving back what useful nuances (from a number of past editors, only a couple of bits even having had my own hand primarilly behind them as they were) really needn't have been removed. I dispute the terms of your objections (as summarised) behind {{diff|353937|some changes}}, but have rephrased based upon what I ''think'' you mean, giving you should prefer and wouldn't feel the need to be as randomly censorious about. [[Special:Contributions/172.69.195.173|172.69.195.173]] 02:54, 24 October 2024 (UTC)
:::Figure 1 in https://climate.copernicus.eu/climate-indicators/temperature does not seem like a random walk to me. [[Special:Contributions/172.69.33.118|172.69.33.118]] 05:02, 24 October 2024 (UTC)
::::Added the "Random Walk" because, ignoring long-term trends, year-on-year the measured average is going to blip up and down for all kinds of reasons (physical and measuring issues, both), so it will be lower than expected or higher than expected compared to the smoother track it actually takes on a rolling average. I think one of the versions I replaced had partial suggestion that the average was effectively constant (in °C, not just °X), and while records adjusted every now and then (or every year!), it all just rather settled down at the °X midpoint. Which it doesn't. (And also that it's ''possible'' that Average and Minimum change such that the projected Absolute Zero ''doesn't'' move so much, one year, although mostly the fulcrum will be closer to 0°X rather than 0K.)
::::But I've yet to see what's been changed (maybe improved) since I was last looking at it. Maybe this is an out-of-date explanation. [[Special:Contributions/172.70.90.202|172.70.90.202]] 12:04, 24 October 2024 (UTC)

When I originally designed my unit conversion app I almost made a unit up that was based on the ideal gas law and one mass pound of said gas in a one cubic foot container. It seemed more quixotic than anything else so I didn't pull the trigger on it. Maybe I should have.[[Special:Contributions/172.70.111.33|172.70.111.33]] 20:38, 24 October 2024 (UTC)

Is x based off of elon musk changing twitter to X? [[Special:Contributions/172.71.254.50|172.71.254.50]] 23:22, 24 October 2024 (UTC)
:Too many things were already "X" (X marks the spot, Planet X, The X-Men, Xmas...), I see no need to presume that Elon has successfully claimed ownership of one entire letter of the alphabet due to a car-crash business deal and a self-obsessive personality. To paraphrase Freud, "sometimes an X is just an X", and with no references at all to anything Twitter-like I don't see any other intent than just as a traditional placeholder character. [[Special:Contributions/172.70.90.209|172.70.90.209]] 09:40, 25 October 2024 (UTC)

== Division by zero ==

I saw this in an edit summary: "10/0 is not ∞, it's also an error, not NaN according to the IEEE. It's closer to {+∞, -∞} than NaN but it's still neither because you can't make limits work"

Actually, IEEE floating point 10/0 can be an error, +∞, or NaN depending on the rounding mode. This is one of the reasons why mathemeticians don't appreciate the IEEE as much as they might. Division by zero is strictly undefined because of the problems with limits alluded to in the summary. https://www.youtube.com/watch?v=dHdg1yn1SgE [[Special:Contributions/108.162.245.66|108.162.245.66]] 03:48, 24 October 2024 (UTC)

:"When considering division by zero through limits, assigning {+∞, -∞} as potential results is insufficient because limits require consistency and well-defined behavior. In the case of dividing a number by values approaching zero, the results differ depending on whether zero is approached from the positive or negative direction. As a divisor approaches zero from the positive side, the quotient grows towards +∞, and from the negative side, it tends towards -∞. Since limits must converge to a single value for consistency, this disparity leads to an undefined result. Moreover, in many mathematical contexts, infinity is not a number but rather a concept describing unbounded growth, meaning operations involving infinity, like addition or multiplication, are not well-defined in the same way as with finite numbers. This inconsistency in approaching zero prevents {+∞, -∞} from being an adequate solution set for division by zero. Defining division by zero as infinity would create contradictions in both arithmetic and algebraic contexts, as it disrupts fundamental properties like continuity and field structures in mathematics. Hence, division by zero remains undefined to preserve mathematical rigor and coherence."
:[Chat Gippity 4o] [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 08:53, 24 October 2024 (UTC)
::https://imgflip.com/i/7yd7gz [[Special:Contributions/172.71.150.131|172.71.150.131]] 09:06, 24 October 2024 (UTC)

== Trivia section table values? ==

Someone please double-check the Trivia section temperatures. I am not convinced they are entirely correct or consistent. I'm least sure about the Galen row. And Wedgwood obviously needs more digits of precision. [[Special:Contributions/162.158.41.28|162.158.41.28]] 13:10, 24 October 2024 (UTC)
:LGTM. [[User:Liv2splain|Liv2splain]] ([[User talk:Liv2splain|talk]]) 20:55, 25 October 2024 (UTC)

1643: Degrees

2024-10-20T21:43:57Z

172.69.79.191: /* Explanation */ To disambiguate against differing by a constant multiple. (Might be best to say *which way* the shift is, but might be too wordy.)

{{comic
| number = 1643
| date = February 15, 2016
| title = Degrees
| image = degrees.png
| titletext = "Radians Fahrenheit or radians Celsius?" "Uh, sorry, gotta go!"
}}

==Explanation==
[[Cueball]] (possibly representing [[Randall]]) is being asked by a friend for the {{w|temperature}}. While he is checking his smartphone for the weather, he begins pondering what unit he should use when answering the question. (See below for [[#Cueball's reasoning|Cueball's reasoning]].)

In the US (where Cueball and [[Randall]] are from), the {{w|Conversion of units of temperature|temperature scale}} used in daily life is {{w|Fahrenheit}}. However, most of the rest of the world uses {{w|Celsius}} in daily life, and even in the US it is commonly used for science. This is also why Randall has previously made the comic [[526: Converting to Metric]]. There are also people who wish the US to change to the metric system, although some of them still wish to keep the Fahrenheit scale as mentioned in [[1982: Evangelism]]

:'''The Celsius scale''' is from the {{w|metric system}}. Though this system has been officially sanctioned for use in the US since 1866, it is not frequently used in daily American life (except for some things, like liter bottles of soda), although it is the preferred system for trade and commerce according to the {{w|Metric Conversion Act}} of 1975. The US remains the only industrialized country, and one of few countries period, that does not use the metric system for everyday measurements, and in which official government documents and signage do not enforce metric units. The unit ''degree Celsius'' or °C is an accepted {{w|International System of Units#Derived units|derived unit}} from the {{w|International System of Units}} (SI units) used in science (which again is the modern form of the metric system). The SI unit of temperature is the {{w|kelvin}}, but this temperature scale just differs from the Celsius scale by a constant shift (273.15).
:'''The Fahrenheit scale''' is from the {{w|United States customary units|US customary system}} and the (British) {{w|Imperial units|imperial system}}. The unit is ''degree Fahrenheit'' or °F, and the relation to the Celsius scale is not easy to find in a mental calculation. The relations are: [°F] = [°C]×9⁄5 + 32 or [°C] = ([°F] − 32)×5⁄9. (For this exact reason Randall has previously made a helpful table for these situations in [[526: Converting to Metric]].)

Unlike most areas of measurement, where the metric system is widely considered superior, there is considerable debate about the relative merits of Fahrenheit vs. Celsius. Cueball weighs up the benefits of both scales, but fails to find a solution he can live with, and since he feels he has to give his friend an answer now, he panics and gives the answer 0.173 {{w|radians}}.
:'''Radian''' is the standard unit of angular measure, used in many areas of mathematics. An angle's measurement in radians is numerically equal to the length of a corresponding arc of a {{w|unit circle}}. It has no units and is denoted with the superscript c, but more commonly rad, lest it be confused with {{w|Degree (angle)|angular degrees}}. One radian is an angle of approximately 57.3 degrees.
:'''Angular degrees''' is a system used to measure {{w|angles}} in {{w|geometry}}, and although it too uses the symbol ° and the word "degrees", it has nothing to do with temperature measurements of any sort. Potentially he is referring to a monitor on his phone that is giving him data on which he is deliberating.

Thus, this answer is unhelpful and the joke is that traditionally both geometric angles and temperature are measured in "degrees", but there is no connection between the two.

The title text indicates that Cueball's friend still wants to know whether the answer is in radians Fahrenheit or radians Celsius, which, despite being a silly way to express temperature, would actually enable the friend to get some meaning out of the reply. But this just takes Cueball back to the problem he failed to solve in the first place of choosing one scale in preference to the other, so suddenly he announces has to go and runs off without ever clarifying what he meant. This result is probably because he is afraid of being a bad friend according to his very last point regarding Fahrenheit: ''Valuing unit standardization over being helpful possibly makes me a bad friend.''

The answer Cueball gives of 0.173 radians corresponds to a geometric angle 9.91° (0.173 × 360°/2π). If this were "radians Celsius" it would be 9.91 °C corresponding to 49.8 °F and if it were "radians Fahrenheit" it would be 9.91 °F corresponding to -12.3 °C. [http://boston.cbslocal.com/2016/02/13/new-england-freezing-temperatures-valentines-day-weekend/ Given the temperatures] in {{w|Massachusetts}} (where Randall lives) when this comic came out, the day after Valentine's Day 2016, Cueball was probably giving his answer in radians Fahrenheit.

=== Cueball's reasoning ===
==== Degrees Celsius ====
;International standard
:Degrees Celsius is derived unit in the SI system of units used to measure temperature in most countries today. Using the SI system would allow Cueball to be easily understood in most countries and is by far the most recognized system, but it is not the most commonly used in the United States, his presumed location in the comic.
;Helps reduce America's weird isolationism
:The United States uses its own set of units, including degrees Fahrenheit, called the {{w|United States customary system}} (similar but not equal to the imperial system), in contrast to most of the rest of the world, which uses the SI system. The US's system of units is therefore considered "weird" as it makes the US different from most of the world, but previous efforts to convert the US to the SI system have failed. Cueball evidently believes that by using SI units, he will help to eventually convert the US to the SI system, bringing considerable trade and tourism benefits and reducing confusion when dealing with foreigners.
;Nice how "negative" means below freezing
:On the Celsius scale, the freezing point of water at standard atmospheric pressure (101.325 kilopascals) is very close to 0 °C, and any temperature below that is below the freezing point. The Fahrenheit scale uses different points of reference (using a water/ammonium chloride chemical reaction for the lower calibration, while the upper calibration is set such that water freezing and water boiling are 180 degrees apart), and as a result the freezing point of water is a less memorable 32 °F.
;Physics major loyalty
:Cueball is apparently a physics major, like Randall, and SI units are more commonly used for scientific work (as the kelvin scale is sometimes used in physics and other sciences), even in the US. By using the Celsius scale in casual conversation, he would show his loyalty to the system used by actual physicists.
;Easier to spell
:"Celsius" is generally considered to be an easier word to spell than the German surname "Fahrenheit" (at least this is the case for Cueball, but not necessarily for those who more commonly use Fahrenheit than Celsius). In this case the word is being spoken and the point is not immediately relevant, but part of the joke is that Cueball is overthinking things and worrying about the general use of the word when an answer is needed in this specific case.
;We lost a Mars probe over this crap
:The {{w|Mars Climate Orbiter|Mars Climate Orbiter}} disintegrated in Mars' atmosphere because Lockheed used US customary units instead of the contractually specified metric units. This had nothing to do with temperature scales, but was the use of the unit pound-seconds where newton-seconds should have been used. This was a great and tragic loss for science in general, Mars exploration in particular, and thus also for Randall who would join NASA a few years later ([[:Category:Mars rovers|Mars rovers]] and probes are a frequent topic on ''xkcd'').

====Degrees Fahrenheit====
;0 °F to 100 °F good match for temperature range in which most humans live
:In the context of air temperature, 0 °F and 100 °F correspond to "just about as cold as it gets" and "just about as hot as it gets" in temperate zones, thereby making Fahrenheit a useful temperature scale for weather reporting where most people live. By contrast, in Celsius a range of common temperatures in temperate zones is -20 °C to 40 °C, which is a less intuitive range for those used to the Fahrenheit scale.
;Rounds more usefully (70's, 90's)
:An argument sometimes heard for the continued use of Fahrenheit temperatures is that each 10 degrees change is meaningful in how we feel the temperature. Thus, it is convenient to talk about the temperature being in the 70's today, or in the 90's, etc. Since the Celsius degrees are almost twice as large, a similar statement about the temperature being in the 20's or 30's is not as useful, unless more precision is added by using phrases like low 20's or high 30's. However, this seems likely to be more a matter of which scale you are used to using than anything inherent in one scale or the other.
;Unit-aware computing makes imperial less annoying
:If you need to constantly convert between imperial and SI measurements in your head, or even between different imperial units (e.g., ounces and pounds), it gets annoying and is a strong argument for everyone using metric measurements all the time. But when it is easy to get the temperature - or any other measurement - reported in whatever units you want just by selecting the units you want your computer to report, then the annoyance is minimized, and the arguments for why we should stop using a familiar scale are weakened. Note that Cueball is looking at his smart-phone to get the current temperature.
:As with many Americans, Randall is treating the {{w|United States customary units|United States customary system}} as identical to the {{w|imperial system}} as previously used in most of the rest of the English speaking world. They have many commonalites, and both systems have temperature measured in degrees Fahrenheit, but also differ in some ways (especially with certain units of volume).
;SI prefixes are less relevant for temperatures
:One of the nice things about SI measurements is how the same basic unit scales by factors of 10 with common prefixes - e.g., kilometer, millimeter, kilogram, milligram, etc. Imperial measurements don't have this feature - you don't talk about long distances as kiloinches or small weights as millipounds. But, we generally don't use multiple units for atmospheric temperature (millidegrees or kilodegrees), so this argument for using SI measurements for length, mass, volume, etc., isn't as applicable for temperature scales.
;Fahrenheit is likely more clear in this context
:The fact that Cueball is having this conflict at all implies that the conversation is taking place in America, presumably between Americans. Given that, and given that the discussion is about the weather, the typical assumption is that temperatures will be given in Fahrenheit, unless specified otherwise. An answer in Fahrenheit is therefore likely to be easily understood, while an answer in Celsius risks being confusing, or even incomprehensible.
;Valuing unit standardization over being helpful possibly makes me a bad friend
:The final thing Cueball considers is to question why he would give an answer that attaches more value to promoting standardization of units when all his friend wants to know is whether it is cold or warm outside. Wouldn't it be more friendly to just answer the question the way his friend will find most convenient? This is probably the reason he ends up not giving any real answer, as giving the answer in Celsius would make him a bad friend. Panicking and giving the answer in radians makes him a weird friend, which might or might not be preferable to being a bad friend.

==Transcript==
:[Cueball is looking at his smartphone while a friend calls to him from off-panel. Cueball is thinking as indicated with a thought bubble.]
:Off-screen voice: Hey, what's the temperature outside?
:Cueball (thinking): Should I give it in °F or °C?

:[Zoom in on Cueballs head with a list of reason to use Celsius above him:]
:'''Degrees Celsius'''
:* International standard
:* Helps reduce America's weird isolationism
:* Nice how "negative" means below freezing
:* Physics major loyalty
:* Easier to spell
:* We lost a Mars probe over this crap

:[Same view of Cueballs head, but wider frame to accommodate a broader a list of reason to use Fahrenheit:]
:'''Degrees Fahrenheit'''
:* 0°F to 100°F good match for temperature range in which most humans live
:* Rounds more usefully (70's, 90's)
:* Unit-aware computing makes imperial less annoying
:* SI prefixes are less relevant for temperatures
:* Fahrenheit is likely more clear in this context
:* Valuing unit standardization over being helpful possibly makes me a bad friend

:[Cueball is holding his smartphone down while thinking as indicated with another thought bubble floating at the top. He then speaks and gets a reply from his off-panel friend.]
:Cueball (thinking): Crap, gotta pick something. Uhh...
:Cueball: ...0.173 radians.
:Off-screen voice: I'll just go check myself

==Trivia==
* At -0.698 radians (-40 degrees) it would not have mattered whether it was radians Celsius or radians Fahrenheit as the two scales are equal at this point: -40 °F is the same temperature as -40 °C.

* The Fahrenheit/Celsius debate was later referenced in [[1923: Felsius]].

* Cueball’s friend’s last sentence does not end in punctuation.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Science]]
[[Category:Physics]]
[[Category:Space probes]]
[[Category:Social interactions]]
[[Category:Weather]]

2969: Vice President First Names

2024-10-11T22:57:26Z

172.69.79.191: /* Transcript */

{{comic
| number = 2969
| date = August 7, 2024
| title = Vice President First Names
| image = vice_president_first_names_2x.png
| imagesize = 364x556px
| noexpand = true
| titletext = [Political pundit on the ScrabbleTV News channel] "After four years of defying orthographic pressure, Joe ceded the top of the ticket to Kamala, who--after considering Josh, Mark, Andy, Roy, and Pete--picked Tim."
}}

==Explanation==
Randall observes that American {{w|Vice President of the United States|Vice Presidents}} since the 1980s have almost all gone by short first names. It should be noted that all of the "short" first names in this strip, with the exception of John (F. Kennedy) are diminutives (or initials) of longer names, but all represent the names which the candidates preferred and publicly used. This comic was published one day after {{w|Kamala Harris}} (who replaced Biden as presidential candidate) chose {{w|Tim Walz}} as her running mate for the {{w|2024 United States presidential election|2024 presidential election}}. Both the Republican and Democratic tickets are listed for 2024, since the 2024 election had not yet concluded when this comic was made. Either party winning would match the observation.

In the comic's caption, Randall amusingly describes this as an emerging "political consensus."

While not a "political" consensus per se, the observed phenomenon is a type of consensus — reflecting a multi-decade change in US societal norms — and is not simply a random coincidence.
* There has been a national US trend toward shorter names since the 1980s and 1990s, with a rise in the popularity of baby names like Ryan, Kyle, Amy and Lisa. (The trend has continued, with even shorter names like Ava, Mia and Max becoming more common in the 2000s and 2010s.)
* This has paralleled a trend in shorter business names, with companies like Dell, Cisco and eBay before the turn of the millennium and Google, Uber and Lyft after (cf. pre-1980 businesses like AT&T, BNSF or 3M which had to convert their very long names into acronyms to adapt). Product naming also began to simplify in the late 20th century, driven by marketing strategies that favored brevity and memorability, exemplified by Apple's iconic "iMac" and "iPhone" products.
* All of these naming trends reflect a ''general'' societal trend toward minimalism and less formality, also seen with corporate logos, product design (Apple), clothing design (Gap), furniture design (IKEA) and web/app design.

This societal shift may explain why many politicians with given names like Albert and Richard might have preferred to go by shorter, less formal sounding, more approachable names like Al and Dick, to match the zeitgeist.

That Vice Presidents have used shorter names than Presidents since the 1980s is an interesting coincidence (more discussion below). Most of the Presidents since the 1980s happened to have names (such as George, Barack and Kamala) that can't be easily shortened. And the exception, Donald Trump (which can be shortened to Don), did not become a politician until the nice age of 69, when he was already nationally famous using his full name.

The '''title text''' amusingly suggests (1) the existence of a ScrabbleTV News channel (named after {{w|Scrabble|the word game}}) staffed with (2) political pundits who (3) report Biden's decision to end his re-election campaign as being driven by orthographic (related to the writing of words) pressure to conform to the aforementioned political consensus. Having Joe Biden as President and Kamala Harris as VP violated this pattern, but elevating Harris to the presidency and selecting a short-named running mate restored it. Like Tim Walz, all of the final six candidates considered as Harris's running mate had short first names: {{w|Josh Shapiro}}, {{w|Mark Kelly}}, {{w|Andy Beshear}}, {{w|Roy Cooper}} and {{w|Pete Buttigieg}}.
* This could also be a subtle joke about political pundits tending to give confident, inaccurate hot-takes. (Biden's decision was driven, among other things, by worsening polling, rising concerns about his age, a poor debate performance against Trump and subsequent pressure from other leading Democrats.)

This is Randall's second recent comic about US politics and Kamala Harris, the first being [[2962: President Venn Diagram]] which was published right after she rose to the top of the Democratic ticket.

===Observations===
It is interesting that, even ignoring the stricter definition of having less than four letters in their name, only four pairings have a Presidential given (or adopted) name that is shorter than the Vice-Presidential one, and just two further cases (one of these not involved in winning an election) have equal length names.

===Contextual table of names===
{| class="wikitable"
|+ Presidential and Vice-Presidential names, for the period within the comic, in chronological order.
! Year !! President !! Vice-President
|-
| 1952 (also 1956) || '''Dwight''' David "Ike"<ref name="ike">"Ike" was a shared nickname within the ''Ei''senhower family ("Big Ike", "Little Ike"), which became {{w|Ike for President (advertisement)|commonly used}} for himself, though never became a full replacement of his chosen (re-arranged) 'first' name.</ref> {{w|Dwight D. Eisenhower|Eisenhower}} ''born David Dwight "Little Ike" Eisenhower'' || '''Richard''' Milhous {{w|Richard Nixon|Nixon}}
|-
| 1960 || style="background-color:lightyellow" | '''John''' "Jack" Fitzgerald {{w|John F. Kennedy|Kennedy}} || '''Lyndon''' Baines {{w|Lyndon B. Johnson|Johnson}}
|-style="background-color:lightgray"
| 1963<ref name="dallas">JFK's assassination meant LBJ acceded to the role, but under the Constitution as in effect at the time, he could not appoint a new Vice-President prior to his subsequent re-election bid.</ref> (Not in comic.) || colspan="2" | '''Lyndon''' B. Johnson
|-
| 1964 || '''Lyndon''' B. Johnson || '''Hubert''' Horatio {{w|Hubert Humphrey|Humphrey}} Jr.
|-
| 1968 (also 1972) || ‎'''Richard''' Nixon || '''Spiro''' Theodore {{w|Spiro Agnew|Agnew}}
|-style="background-color:lightgray"
| 1973<ref name="watergate">Changes occuring within a Presidential term, in response to an emerging political scandal</ref> || '''Richard''' Nixon || '''Gerald''' Rudolph {{w|Gerald Ford|Ford}} Jr ''born Leslie Lynch King Jr.''
|-style="background-color:lightgray"
| 1974<ref name="watergate"/> || ‎'''Gerald''' Ford || '''Nelson''' Aldrich {{w|Nelson Rockefeller|Rockefeller}}*
|-
| 1976 || ‎James "'''Jimmy'''" Earl {{w|Jimmy Carter|Carter}} Jr. || '''Walter''' Frederick "Fritz" {{w|Walter Mondale|Mondale}}
|-
| 1980 (also 1984) || '''Ronald''' Wilson {{w|Ronald Reagan|Reagan}} || '''George''' Herbert Walker {{w|George H. W. Bush|Bush}}
|-
| 1988 || '''George''' H.W. Bush || style="background-color:lightyellow" | James Danforth "'''Dan'''" {{w|Dan Quayle|Quayle}}
|-
| 1992 (also 1996) || style="background-color:lightyellow" |William "'''Bill'''" Jefferson {{w|Bill Clinton|Clinton}} ''born William Jefferson Blythe III'' || style="background-color:lightyellow" | Albert "'''Al'''" Arnold {{w|Al Gore|Gore}} Jr.
|-
| 2000 (also 2004) || '''George''' Walker {{w|George W. Bush|Bush}} || style="background-color:lightyellow" |Richard "'''Dick'''" Bruce {{w|Dick Cheney|Cheney}}
|-
| 2008 (also 2012) || '''Barack''' Hussein {{w|Barack Obama|Obama}} II || style="background-color:lightyellow" | Joseph "'''Joe'''" Robinette {{w|Joe Biden|Biden}} Jr.
|-
| 2016 || '''Donald''' John {{w|Donald Trump|Trump‎}}‎ || style="background-color:lightyellow" |Michael "'''Mike'''" Richard {{w|Mike Pence|Pence}}
|-
| 2020 || style="background-color:lightyellow" | "'''Joe'''" Biden || '''Kamala''' Devi {{w|Kamala Harris|Harris}}
|-
| 2024 (If {{w|Democratic Party (United States)|Democrats}} win) || '''Kamala''' Harris || style="background-color:lightyellow" | Timothy "'''Tim'''" James {{w|Tim Walz|Walz}}
|-
| 2024 (If {{w|Republican Party (United States)|Republicans}} win) || '''Donald''' J. Trump || style="background-color:lightyellow" | James David "'''JD'''" {{w|JD Vance|Vance}} ''born James Donald Bowman''
|}

:Complete titles are given in the first occurance, providing a full context of options for identification purposes; subsequent mentions may be reduced to their 'typical' name. Any relevent self-acknowledged sobriquets are inserted in quotes.
:Bold is used to indicate the individual's actually most commonly used single given name, as referenced within the comic. Surnames (also commonly used, with or without the title or other disambiguation) are wikilinked upon their first appearance.
:Italics indicates birth names, where different.
:Darkened rows show transitions not made via a {{w|List of United States major party presidential tickets|'ticket'}} at the end of each 4-year electoral cycle.
:Yellow cells echo the comic's highlights indicating '''given names''' being four or fewer characters in length.
<references/>

==Transcript==
:[A table is shown in a panel.]
::[To one side, there is a single 'key' square, shaded yellow, given a label:] "Four letters or fewer"
::[Table header has no 'first column' cell, leaving a bite out of it]
::[Second column cell:]President
::[Third column cell:]VP
::[Further rows are of the pattern of: years, presidential names and vp names]
:::[Year:] 2024 [President (question mark then two rows of names):]? [name1:] Kamala [name2:] Donald [VP, shaded yellow (two rows of names then question mark):] [name1:] Tim [name2:] JD [question mark:] ?
:::[Year:] 2020 [President, shaded yellow:] Joe [VP:] Kamala
:::[Year:] 2016 [President:] Donald‎ [VP, shaded yellow:] Mike'''
:::[Year:] 2008 [President:] Barack‎ [VP, shaded yellow:] Joe'''
:::[Year:] 2000 [President:] George [VP, shaded yellow:] Dick'''
:::[Year:] 1992 [President, shaded yellow:] Bill''' || '''Al'''
:::[Year:] 1988 [President:] George [VP, shaded yellow:] Dan'''
:::[Year:] 1980 [President:] Ronald‎ [VP:] George
:::[Year:] 1976 [President:] Jimmy [VP:] Walter
:::[Year:] 1974 [President:] Gerald [VP:] Nelson
:::[Year:] 1973 [President:] Richard [VP:] Gerald
:::[Year:] 1968 [President:] Richard [VP:] Spiro
:::[Year:] 1964 [President:] Lyndon [VP:] Hubert
:::[Year:] 1960 [President, shaded yellow:] John [VP:] Lyndon
:::[Year:] 1952 [President:] Dwight [VP:] Richard

:[Caption below the panel:]
:Since the 1980s, a political consensus has emerged: vice presidents should have short first names.

==Trivia: Other ways to shorten names==
Politicians can also use a more casual name by using an already less unwieldy middle name (as with {{w|Mitt Romney|Willard Mitt Romney}}, but doubly-averted in Dan Quayle's case). Even when they're not shortened to four or fewer letters, names can be made more casual in other ways (as with {{w|Bernie Sanders|Bernard 'Bernie' Sanders}}). As well, some politicians were commonly called by short nicknames even if they did not run under those names (Dwight 'Ike' Eisenhower).

Some of these may have been adult decisions, a personal choice to mark adulthood (or a change of career) by a more character-distinguishing variation, others may have been 'imposed' upon them by family, friends or peers over time and become happily accepted as the norm by the recipient without any great personal consideration.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Politics]]
[[Category:Elections]]
[[Category:Comics featuring politicians]]
[[Category:Comics featuring Kamala Harris]]

2835: Factorial Numbers

2024-10-11T22:42:05Z

172.69.79.191: Thanks for reminding me that this needed retabling. I think this works, but I'm not sure if there'd be concensus about it... Letting others mull over it.

{{comic
| number = 2835
| date = September 29, 2023
| title = Factorial Numbers
| image = factorial_numbers_2x.png
| imagesize = 628x481px
| noexpand = true
| titletext = So what do we do when we get to base 10? Do we use A, B, C, etc? No: Numbers larger than about 3.6 million are simply illegal.
}}

==Explanation==
A {{w|factorial}} is a product of positive integers. For instance, four factorial, written '4!', means 4×3×2×1=24.

The "base" of a numbering system defines which numbers it uses as digits and what each place value in a number means. For example, in decimal numbers (base 10), the digits go from 0 to 9, and place values are ones, tens, hundreds, etc. So "137" means 1×100 + 3×10 + 7×1 = 137. Numbers can also be written in other bases, such as binary (base 2, using the digits 0 and 1 and place values of 1, 2, 4, 8...) or octal (base 8, using the digits 0-7 and place values of 1, 8, 64, and so on). Using different bases is uncommon, but is sometimes useful in computer science.

In the comic, [[Cueball]] proposes a {{w|factorial number system}}, where the base ''changes'' for each place value - the first digit can be 0 or 1, the next digit can be 0, 1, or 2, the third can be 0, 1, 2, or 3, and so on. Each place value is the factorial of the base. So the number 137 in base 10 could be written as 10221, meaning 1×5! + 0×4! + 2×3! + 2×2! + 1×1!. While this numbering system is technically usable and can express any number, it seems excessively complicated, and the only reason Cueball gives for using it is that he thinks large digits like 9 should only be used in vast numbers (9 would not be used unless the number was at least 9 digits long, or over 3.2 million in decimal). This is a silly reason for using a new numbering system,{{cn}} so the math department thinks this is a prank, and has security throw him out.

In the title text, someone points out that a factorial number system needs more and more digits for each place value. The tenth digit in a factorial number would be in base 11, which needs 11 possible digits, and 0-9 only provides 10. In bases higher than 10, you can use letters to represent higher digits. For example, hexadecimal (base 16) goes from 0 to 9, then from A to F. It would be reasonable to do the same thing for higher bases in factorial numbers. Instead, Cueball says that it's simply illegal to write numbers larger than about 3.6 million, the largest you can go without using a base greater than 10. This is an absurd limitation, as other numbering systems can go as high as you like.

The number at the top of Cueball's presentation, 353011, is 3×6! + 5×5! + 3×4! + 0×3! + 1×2! + 1×1! which gives the decimal value of 2835, the number of the comic.

Cueball's examples of numbers written in factored appear as sequences [https://oeis.org/A007623 A007623] in the OEIS.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon. - De-tabled the Transcript (thanks for reminding me), but definitely still needs work...}}
:[Cueball is standing in front of a large presentation poster. There are two uniformed officers (a Ponytail and a further Cueball, wearing badged hats) approaching Cueball.]
:[Poster:]

::[Title:]Variable-base Factoradic™ numbers

::[Diagram in the form of a slip of paper, left edge torn jagged to indicate indefinite continuation]
:::[Several stacked elements. Following the general pattern of having "Base" at the top a base-number below that, and a square below that holding a digit (less than the given base-number)]
:::[Rightmost stack:] Base 2 [square:] 1
:::[2nd rightmost stack:] Base 3 [square:] 1
:::[3rd rightmost stack:] Base 4 [square:] 1
:::[4th rightmost stack:] Base 5 [square:] 0
:::[5th rightmost stack:] Base 6 [square:] 5
:::[6th rightmost stack:] Base 7 [square:] 3
:::[Leftmost stack has no obvious text, its square is cut across by the 'torn' edge of the diagram.]

::[Two column-pairs, with idential paired-headers, above (generally) a 'number', a linking dash and another 'number']
:::[Left headers for both:] Base 10
:::[Right headers for both:] Factoradic
:::[First column of number pairs:]
::::1 — 1
::::2 — 10
::::3 — 11
::::4 — 20
::::5 — 21
::::6 — 100
::::7 — 101
::::[Gap]
::::21 — 311
::::22 — 320
::::23 — 321
:::[Continuation in second column of number pairs:]
::::24 — 1,000
::::25 — 1,001
::::[Gap]
::::5,038 — 654,320
::::5,039 — 654,321
::::5,040 — 1,000,000
::::[Gap]
::::999,998 — 266,251,210
::::999,999 — 266,251,211
::::1,000,000 — 266,251,220
::::1,000,001 — 266,251,221

:Cueball: Small numbers like seven or nineteen shouldn't use big numerals like "7" or "9".
:Cueball: I mean, "9" is the biggest numeral we have! It should be reserved for '''''big''''' numbers.
:Cueball: Small numbers should be written with small numerals like "1" or "2".
:Cueball: That's why my variable-base system uses...Hey! No, listen!
:[Caption under the comic:] Factorial numbers are the number system that sounds most like a prank by someone who's about to be escorted out of the math department by security.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Characters with hats]]
[[Category:Math]]
[[Category:Self-reference]] 
[[Category:Comics featuring Ponytail]] 
[[Category:Multiple Cueballs]] 
[[Category:Popular Comics]]

2995: University Commas

2024-10-08T09:26:10Z

172.69.79.191: /* Explanation */

{{comic
| number = 2995
| date = October 7, 2024
| title = University Commas
| image = university_commas_2x.png
| imagesize = 580x273px
| noexpand = true
| titletext = The distinctive 'UCLA comma' and 'Michigan comma' are a long string of commas at the start and end of the sentence respectively.
}}

==Explanation==
{{incomplete|Created by a BOT COMMA - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The {{w|Oxford comma}} is a comma between the second-to-last item in a list and the word ''and''. For instance, you might write "red, white, and blue" (with the Oxford comma) or "red, white and blue" (without it). Some style guides such as (unsurprisingly) ''{{w|The Oxford Style Manual}}'' published by {{w|Oxford University Press}} recommend using it while others recommend against it, though even those with such a recommendation may suggest its (non-)use in situations where doing so avoids ambiguity arising from the normally recommended choice.

A [https://www.sarenaulibarri.com/blog/why-youre-wrong-about-the-oxford-comma common example] showing the need for an Oxford comma is "To my parents, Ayn Rand''',''' and God". Without the comma (as in: "To my parents, Ayn Rand and God"), it may read that the author's parents are Ayn Rand and God. If such confusion is to be avoided, reordering the list is a common way to avoid ambiguity, for example, "To Ayn Rand, God and my parents" is one such reordering. However, the use of an Oxford comma in this version might imply the deification of Ayn Rand.

Conversely, if the sentence was instead to be "To my mother, Ayn Rand, and God", with such a comma, this ambiguously makes the assertion that one's mother is Ayn Rand (whereas "To my mother, Ayn Rand and God" does not).

This comic imagines that the other commas in a list of items are not simply generic commas, but are all associated with different universities. This applies both to commas which should ''always'' be present in a list, grammatically valid commas elsewhere in the sentence which have nothing to do with a list (such as after the word "please") and blatantly erroneous commas which should ''never'' be present in their given context (e.g. immediately prior to the {{w|full stop}}/period).

The sentence used, when most simply punctuated, reads (with the contentious Oxford comma bracketed): "Please buy apples, mac and cheese, milk[,] and bread."

The MIT comma might be a reference to trailing commas sometimes used in programming[https://stackoverflow.com/questions/11597901/why-are-trailing-commas-allowed-in-a-list], which would be associated with a highly technical university.

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

:[A sentence is written in greyed-out text, with the commas in black and each labeled with an arrow]
:Please, buy, apples, mac, and, cheese, milk, and, bread,.

:[The labels are as follows, in order:]
:Harvard comma
:Yale comma
:Stanford comma
:Columbia comma
:Cambridge comma
:Cornell comma
:Oxford comma
:Princeton comma
:MIT comma

:[Caption:] The Oxford one is the most famous, but many major universities have their own comma.

{{comic discussion}}

Talk:726: Seat Selection

2024-10-05T17:57:06Z

172.69.79.191:

Can someone please fix the date of the comic??? [[Special:Contributions/172.68.27.84|172.68.27.84]] 14:17, 11 May 2018 (UTC)

Could the part about the wing also refer to [http://en.wikipedia.org/wiki/Nightmare_at_20,000_Feet Nightmare at 20,000 Feet]? -- mwburden [[Special:Contributions/99.129.248.32|99.129.248.32]] 12:27, 12 December 2012 (UTC)
:For sure it has nothing to do with this. There is nothing about gremlins here! Deleted from explanation --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 14:55, 31 March 2016 (UTC)

Randall should add a bonus if you click on the wing in the image. 03:44, 23 June 2013 (UTC)

Pilot: You've killed the rest of the crew! Plot twist: Megan's flying American, on a plane inherited from TWA. Here, it's pilot/co-pilot/flight engineer/navigator. This was back when airlines held off on fleet upgrades to cut costs. [[Special:Contributions/108.162.221.8|108.162.221.8]] 04:22, 20 February 2014 (UTC)

This is one of my favorite xkcds {{unsigned ip|172.71.150.254|17:01, 5 October 2024}}

== Wrong date on comic header ==

It reads April 21, 2010, but this comic wasn't posted on that date.
[[Special:Contributions/198.41.230.226|198.41.230.226]] 17:15, 28 March 2018 (UTC)

887: Future Timeline

2024-09-29T21:51:45Z

172.69.79.191: The vague (and often self-(un)declared) term of "white" still does not deserve capitalisation, given how scientifically meaningless it is outside of arbitrary (or "one drop") segregations. "Scare" quotes, they weren't, just quotes. But I'll omit, for you.

{{comic
| number = 887
| date = April 18, 2011
| title = Future Timeline
| before = [[#Explanation|↓ Skip to explanation ↓]]
| image = future timeline.png
| titletext = Not shown: the approximately 30,000 identical, vaguely hysterical articles titled "WHITE PEOPLE IN [THE US/BRITAIN] TO BECOME MINORITY BY [YEAR]!", which came up for basically any year I put in.
}}

{{TOC}}==Explanation==
This comic uses the same strategy as comic [[715: Numbers]], in which [[Randall]] uses Google to search for phrases and then charts the results. This one is charted as a timeline, whereas 715 was charted as line graphs.
It is a list of things predicted or announced by anyone at any time (the ones you see on Google search using "by the year..." or similar statements).

"2101 - War Was Beginning" is a reference to the opening narration of video game ''Zero Wing''; the same narration is famous for the internet meme "{{w|All your base are belong to us}}". As there are not any other out and out references in the comic, and the rest are actually results that you can find using Randall's methods, "War Was Beginning" was probably the only thing he got when he googled 2101 as well.

Certain events in this comic, e.g., "Social Security stops running surplus", are repeated multiple times. Also, certain bizarre events, like "Apocalypse occurs", or "Flying cars reach market", happen before rather plausible things, like "'Big one' hits California". Certain events, like "Japan is a robot-only country" or "Gillette introduces 14-blade razor" may be related to the recurring theme [[605: Extrapolating]].

According to [https://www.census.gov/content/dam/Census/library/publications/2020/demo/p25-1144.pdf some official projections], (non Hispanic) {{w|white people}} will no longer be the majority in the United States by 2045 due to low birth rates and high rates of immigration. The title text is Randall's statement that, for both the US and Great Britain, there are so many sources that mention this, for any year he cared to search for and many using more far more doubtful sources (if any), that he decided that it was not worth flooding the chart with all these spurious repetitions, even though he did include other less prolific recurring themes.

This comic has similar features to [[1413: Suddenly Popular]], [[1093: Forget]], and [[891: Movie Ages]].

==The predictions==
{| class="wikitable"
|-
! Year
! Prediction
! Further Details
! Outcome
|-
| rowspan="4"| 2012
| World population
| Ever since the advent of modern medicine and the more efficient agricultural processes developed since the Industrial Revolution, the human population had been growing at an unprecedented rate. This has caused some people to {{w|Human overpopulation|worry about overpopulation}}, which would cause a scarcity of resources and overcrowding, and propose various solutions, most of which involve some form of eugenics. 7 billion is a landmark number because it is a multiple of 1 billion.
| Close; Earth reached 7 billion in late 2011.
|-
| Flying cars
| For decades, flying cars have been a staple of futuristic sci-fi and technological predictions. So far very few of these predictions, which to tend to hover around 5–10 years from whatever the current date is, have come true.
| Too early; a flying car designed for consumer use was [https://www.suasnews.com/2021/04/announcing-aska-the-electric-take-off-and-landing-flying-car-for-consumers first demonstrated in July 2021] , but has yet to go into production. You could argue that helicopters count as flying cars, but these are not affordable{{citation needed}} and hence not widely used by the general public.
|-
| Canada cuts greenhouse emissions
| Currently, the Earth is experiencing an unprecedented period of warming we call global warming, caused in part by greenhouse emissions, which are gases that help trap heat in the atmosphere. Countries have repeatedly gotten together and promised to stop emitting greenhouse gases, but so far they have failed to meet their targets.
| False. Canada withdrew from the Kyoto treaty in late 2011, and its emissions in 2012 were 18% ''above'' 1990 levels (though its population had grown 26% and its GDP had grown 67% in that period).
|-
| Apocalypse occurs
| The end of a cycle of the Mayan calendar on December 22, 2012 has been used in popular culture as a basis for predicting the end of the world. Amongst other things, this included the film '2012'. Some people took this rather more seriously, and actually believed that the world would end on this date.
| False.{{Citation needed}}
|-
| rowspan="4"| 2013
| National debt paid off
| For years, the subject of national debt (in the USA) has been a political point of contention. While both parties theoretically support reducing the debt or paying it off entirely, Democrats are more willing to spend to pull the country out of recessions in the economy and Republicans to cut taxes. The last time that spending did not exceed revenue begin under Clinton, a Democrat, and ended after George W. Bush, a Republican, said that this amounted to taxpayers being "overcharged" and taxes were lowered, followed by the Great Recession. Clinton at one point proposed [https://money.cnn.com/1999/06/28/economy/clinton/ paying off the debt by 2015].
| False.
|-
| Microchipping all Americans
| Microchips are small computer chips, typically embedded in pets in case they get lost, that contain information about the pet. Some, more paranoid, people worry about the government microchipping everyone in an effort to monitor their activities.
| False, although voluntary RFID implants do exist.
|-
| Homelessness ended in MA
| In 2008, the Commission To End Homelessness in Massachusetts, under Governor Deval Patrick, proposed a plan to all but eliminate homelessness over the next five years (hence the 2013 end-date on the comic).
| False.
|-
| Health care reform law repealed
| A health care reform law, popularly known as Obamacare, was signed into law in 2010. Ever since, many Republicans have tried (in vain) to repeal it, disliking the idea that government should provide and require healthcare. However, President [[Joe Biden]] has stated to restore Obamacare.
| Too early; almost repealed in 2017.
|-
| rowspan="2"| 2014
| US leaves Afghanistan
| After the {{w|September 11 attacks|terrorist attack}} on the {{w|World Trade Center (1973–2001)|World Trade Center}} (WTC) in New York on September 11, 2001, the United States invaded Afghanistan, due to the Taliban allegedly hosting al-Qaeda, the terrorist organization behind the attacks. The war has gone on since then, with the public growing increasingly tired of it. Public support then favoured a withdrawal, but for military and logistical reasons, the government could not simply move all the US troops in Afghanistan to their home. Therefore, the government promised to eventually withdraw all troops, initially planned to do so by the end of 2014.
| Too early; the remaining US troops [https://www.ndtv.com/world-news/afghanistan-afghan-troops-struggle-to-replace-americans-at-key-bagram-air-base-2480356 left Afghanistan in June 2021.]
|-
| GNU/Linux dominant OS
| An operating system, or OS, is the software that forms the structure in which applications on you computer function. Some typical OSs include Mac OS X, Windows 10, and Linux. The first two of those three are commercial products, sold as a copy by a company. The last is an open-source OS, one that anyone can download and modify free. Typically, open-source software is used by a small number of socially conscious people.
| False, although Linux-based Android dominated phones since 2011.
|-
| rowspan="3"| 2015
| New Horizon reaches Pluto
| The New Horizon spacecraft is a U.S. space mission designed to go to Pluto and take photographs, collect samples, etc.
| True. [https://pluto.jhuapl.edu It reached Pluto on July 14, 2015].
|-
| Healthcare law causes hyperinflation
| The National Inflation Association warned that the [https://www.prnewswire.com/news-releases/healthcare-bill-to-cause-us-hyperinflation-by-2015-88711032.html healthcare bill would cause U.S. hyperinflation by 2015.]
| False.
|-
| Millennium development goals achieved
| {{w|Millennium Development Goals}}
| False.
|-
| rowspan="3"| 2016
| Baby boomers begin turning 65
| {{w|Baby boomers}} are individuals conceived in the years following World War Two, roughly defined as those born from 1946-1959. This isn't so much a prediction as basic math; if you were born in 1946, you turned 65 in 2011.
| True.
|-
| Android takes 38%/45% of market share
| {{w|Android (operating system)|Android}} is a popular operating system for smartphones and tablets, created by Google. Market share is the percentage of all devices that use the product, in this case the Android operating system. These entries together are humorous because they cannot both happen at the same time.
| Too late; passed these marks in 2010. {{w|Android OS}}'s [https://www.idc.com/prodserv/smartphone-os-market-share.jsp market share was already 84.4% as of the third quarter of 2014,] showing that both estimates were overly conservative.
|-
| Windows phone overtakes iOS
| {{w|iOS}} is the operating system used by Apple iPhones. At the time of the comic, Apple's mobile OS is much more popular than Microsoft's. The article Randall found predicts that the tables will turn. However, Windows Phone was discontinued in 2017, with support for the last version (Windows Phone 10) ending on December 10, 2019.
| False.
|-
| rowspan="5"| 2017
| China completes lunar mission
| The {{w|Chinese space program}} has plans for extraterrestrial exploration, including a manned mission to the moon.
| False. The first sample-return mission was completed in November 2020.
|-
| Social Security stops running surplus
| The first of many predictions about the United States {{w|Social Security (United States)|Social Security}} trust fund program, all predicting its decline due to a variety of factors.
| Too early. Occurred in 2021.
|-
| US budget balanced
| The {{w|United States federal budget}} outlines how much the US government spends on what in a given fiscal year. The budget is not required to be balanced, and so often more money is spent than is earned in revenue, causing the national debt to rise.
| False. Still pretty negative.
|-
| Newspapers become obsolete and die out
| The increasing popularity of social media and online news has caused a steady decline in the popularity of print media.
| False. Though newspapers (especially printed ones) are in decline, they are certainly not obsolete as of 2017, or 2022, for that matter.
|-
| Cosmetic surgery doubles
| {{w|Cosmetic Surgery}}
| False. According to the ASPS (American Society of Plastic Surgeons), 1.6 million cosmetic surgeries were performed in 2011, while 1.8 million were performed in 2017, an increase of only 0.2 million.
|-
| rowspan="2"| 2018
| Social Security stops running surplus
| {{w|Social Security (United States)|Social Security}} again.
| Still too early.
|-
| Jesus returns to Earth
| A number of Christians have attempted to predict the return of Christ (a.k.a. the {{w|second coming}} or the rapture) using clues from The Bible, even though the Bible and other religious texts says that "no man can know the date" and that it would be within the lifetime of some who witnessed Jesus's first appearance. Several predicted dates have come and gone.
| False.
|-
| rowspan="2"| 2019
| Social Security stops running surplus
| {{w|Social Security (United States)|Social Security}} again.
| Still too early.
|-
| Every baby has genes mapped at birth
| {{w|Gene Mapping}}
| False.
|-
| rowspan="3"| 2020
| Solar power becomes cheaper than fossil fuels
| Scientists estimate that more than half of the {{w|fossil fuels}} in existence have already been found and that fossil fuel production will begin to decline due to the scarcity, causing prices to increase. At the same time, improvements in {{w|Solar Power|solar technology}} are causing the prices for solar energy to steadily decrease.
| True, though only in {{w|Cost of electricity by source#Recent_global_studies|certain cases}}.
|-
| Keyboards and mice become obsolete
| {{w|Computer input device|Computer input devices}} are beginning to adopt other inputs, such as trackpads, voice commands, touch screens, and eye tracking. While touch screens in particular are gaining widespread use with the rise of smartphones and tablets, as of 2022 desktop computers that use mice are still fairly common. And while voice-to-text has greatly improved, it still doesn't have the accuracy to replace typing. None of the other text inputs are as fast as a keyboard, and none are suitable for writing program code.
| False. While touchscreen devices ''are'' increasingly common, desktop computers are still very much in use. Mice continue to be used alongside touchscreens and trackpads, and keyboards remain the dominant method of writing on computers.
|-
| New Tappan Zee bridge constructed
| A {{w|Tappan_Zee_Bridge#Replacement_bridge|replacement bridge}} was announced in 2008.
| Too late; completed in 2017.
|-
| rowspan="4"| 2021
| US debt reaches 97% of GDP
| {{w|US Debt}}
| Too late; reached in 2011.
|-
| US unemployment falls to 2.8%
| {{w|Unemployment in the United States}}
| False: because of the COVID-19 pandemic, unemployment has actually ''increased''.
|-
| Restored caliphate unifies Middle East
| A {{w|caliphate}} is a form of {{w|Islam|Islamic}} theocracy, centred around a Caliph, or successor to the prophet {{w|Muhammad}}. This prediction foreshadows the Islamic State of Iraq and Syria (ISIS), which attempted but failed to create a caliphate in the Levant.
| False.
|-
| Lake Mead evaporates
| Formed by the {{w|Hoover Dam}} on the {{w|Colorado River}}, {{w|Lake Mead}} is the largest reservoir in the United States (measured by maximum capacity). It hasn't reached its capacity since 1983, due to drought and increased demand for water. This is linked to {{w|global warming}}.
| False, although water levels continue to fall.
|-
| rowspan="3"| 2022
| Kilimanjaro snow-free
| At 5,895 metres, {{w|Kilimanjaro}} is the highest mountain in {{w|Africa}}, and the highest free-standing mountain in the world. Around 85% of its ice cover disappeared between 1912 and 2011, and it continues to recede.
| False.
|-
| HTML 5 finished
| The World Wide Web Consortium (W3C) began work on {{w|HTML 5}} in 2004.
| Too late; 5.0 specification released in 2014, but incremental updates continue.
|-
| Newspapers become obsolete and die out
| This is the second time this prediction has appeared.
| False.
|-
| rowspan="3"| 2023
| Jesus returns to Earth (again)
| Again.
| False.
|-
| US debt passes 100% of GDP
| This references the common fear that {{w|US Debt}} will exceed GDP, possibly causing {{w|Economic bubble|economic turmoil}}.
| Too late; reached in 2012.
|-
| All unprotected ancient forests gone from Pacific Northwest
| Likely due to a combination of wildfire and {{w|deforestation}}.
| False.
|-
| rowspan="5"| 2024
| Atlantis begins to reappear
| {{w|Atlantis}} is the name of a fictional/hypothetical island, which is supposed to have been lost beneath the sea. It's not clear why ''rising'' sea level would make it reappear.
| False.
|-
| Orangutans extinct in wild
| {{w|Orangutan|Orangutans}} are a species of great ape, currently classed as an {{w|endangered species}}, and found only in the {{w|Rainforest|rainforests}} of {{w|Borneo}} and {{w|Sumatra}}.
| False.
|-
| China lands men and women on the moon
| The {{w|Chinese space program}} has plans for extraterrestrial exploration, including a manned mission to the moon.
| False; the Chinese government planned a manned mission to the moon for the 2030s.
|-
| NASA sets up permanent moon base
| There has been a lot of hype recently about finally returning to the moon, vis-a-vis Orion.
| Too early; the {{w|Artemis program}} plans to put the {{w|Lunar Gateway}} in orbit around the moon, which will be flown up in [https://www.nasa.gov/gateway-frequently-asked-questions four launches over the course of six years, beginning "no earlier than 2025"]
|-
| Female professionals pass males in pay
| This prediction is an erroneous extrapolation from the current (at the time this comic was made) rate at which female incomes were catching up to male incomes.
| False.
|-
| rowspan="4"| 2025
| World population reaches 8 billion
| Given current rates, it seems unlikely it will take this long to hit 8 billion, but advances in birth control options and especially their availability in developing nations may slow the current rate considerably.
| Too late. This number was reached in late 2022, although it may have been reached later as some countries overcount their population.
|-
| Two billion people face water shortages
| https://english.pravda.ru/science/earth/28-01-2008/103693-water_crisis-0/
|
|-
| 62 MPG cars introduced
| 62 miles per gallon, ~3.8 L/100km. 62 MPG is a very good mileage rate at today's standard, even though [https://abcnews.go.com/Business/story?id=5231050&page=1 some cars can be driven carefully so as to attain over 100 MPG].
|
|-
| US power fades
| https://www.cbsnews.com/news/report-us-power-will-fade-by-2025/
| Hard to know what the precise metric for this would be.
|-
| rowspan="5"| 2026
| Atlantis emerges completely
| {{w|Atlantis}} is the name of a fictional/hypothetical island, which is supposed to have been lost beneath the sea. It seems that it has taken 2 years for it to emerge completely.
|
|-
| Rock Bands die out
| https://bestbands.wordpress.com/2009/01/25/rock-bands-to-die-out-by-2026/
|
|-
| US debt paid off
| [https://www.nytimes.com/2011/03/27/business/27view.html It’s 2026, and the Debt Is Due.]
|
|-
| Car accidents cease
| Presumably, cars will be fully automated and able to pilot themselves at this point and will have fail-safes that prevent collisions currently attributed to user error. Car accidents will always be possible, however, due to mechanical and electrical failures.
|
|-
| West coast falls into ocean
| Most likely due to {{w|San_Andreas_Fault#The_next_.22Big_One.22|a significant seismic event}}.
|
|-
| rowspan="3"| 2027
| Japan introduces new fastest Maglev train
| Japan's railway systems are famous for their "bullet trains", or {{w|Shinkansen}}. The Chūō Shinkansen is planned to be opened in this year.
|
|-
| Lyndon Larouche-planned Mars colony is established
| https://totse.mattfast1.com/en/technology/space_astronomy_nasa/moonmars.html
|
|-
| Social Security stops running surplus
| {{w|Social Security (United States)|Social Security}} again.
|
|-
| rowspan="4"| 2028
| Tobacco outlawed
| Tobacco products (cigarettes and chewing tobacco) have become more and more taboo in modern culture, with most public places and private businesses forbidding their use indoors and near places children congregate.
|
|-
| 40% of coral reefs gone
| Many factors have been attributed to the decline of {{w|Coral_reef#Threats|coral reefs}}, including mining, over fishing, and rising ocean tempteratures.
|
|-
| US debt paid off
| {{w|US Debt}}
|
|-
| Social Security stops running surplus
| {{w|Social Security (United States)|Social Security}} again
|
|-
| rowspan="4"| 2029
| Social Security trust fund exhausted
| The next stage of the collapse of {{w|Social Security (United States)|Social Security}}. After years of deficits deplete the trust fund, the program will only be able to pay out as much in benefits as it takes in each year.
|
|-
| Computers pass the Turing test
| It is no coincidence that 2029 is the timeline for Terminator Movies.
| Some computer programs already clear the Turing Test about 30% of the time.
|-
| Aging reversed
| [https://www.zdnet.com/article/manhattan-beach-project-to-reverse-aging-by-2029/ Manhattan Beach Project to reverse aging by 2029]
|
|-
| Wikipedia reaches 30 million articles
|
| As of July 2024, Wikipedia has over [https://meta.wikimedia.org/wiki/List_of_Wikipedias#Grand_Total 63.2 million total articles], if all languages are included. The source being cited may have meant the English language Wikipedia, which has only {{w|Special:Statistics|6.8 million articles}}.
|-
| rowspan="3"| 2030
| Half of Amazon rain forest lost to logging
| WWF press release - [https://www.worldwildlife.org/press-releases/climate-change-speeds-up-amazon-s-destruction-says-wwf Climate Change Speeds Up Amazon’s Destruction] referring to a report on the [https://assets.panda.org/downloads/amazonas_eng_04_12b_web.pdf Amazon's vicious cycles].
|
|-
| Cancer deaths double from 2008 levels
| From the [https://www.cancer.org/myacs/newengland/global-cancer-burden-to-double-by-2030 Global Cancer Burden to Nearly Double by 2030] article about the article from page 37 of [https://www.cancer.org/research/cancerfactsfigures/globalcancerfactsfigures/global-facts-figures-2nd-ed Global Cancer Facts & Figures 2nd edition].
|
|-
| Arctic ice-free in summer
| https://news.nationalgeographic.com/news/2009/10/091015-arctic-ice-free-gone-video-ap.html
|
|-
| rowspan="3"| 2031
| Computers controlled by thought
| https://www.gizmag.com/future-mobile-technology/17554/
| As of 2017, this is {{w|Brain–computer interface|already possible}}, but still not used in any mass available devices as of 2022.
|-
| Realtors replaced by technology
| https://agbeat.com/editorials/will-realtors-be-replaced-by-technology-by-the-year-2031/
|
|-
| Social Security trust fund exhausted
| https://crfb.org/blogs/cbo-95-percent-confident-social-security-trust-fund-runs-out-25-years
|
|-
| rowspan="3"| 2032
| "Big One" hits San Francisco
| {{w|San Franscisco}} is located on the {{w|San Andreas Fault}}, which is predicted to produce a magnitude 7+ earthquake in the 'near future'. This event is referred to as {{w|San_Andreas_Fault#The_next_.22Big_One.22|"The Big One"}}.
|
|-
| US elects first married lesbian President
| https://4chandata.org/g/In-what-major-ways-do-you-think-the-world-of-2032-will-be-different-from-that-of-today-a20155
|
|-
| Entire world converted to Christianity
| https://www.goddiscussion.com/38920/christian-domininionsts-to-take-over-the-world-by-2032/
|
|-
| rowspan="3"| 2033
| Kilimanjaro ice disappears
| https://www.reuters.com/article/2009/11/02/idUSL2210825
|
|-
| India becomes superpower
| https://www.facebook.com/pages/India-A-SuperPower-by-2033/151177191568098
|
|-
| Europe reaches Mars
| [https://www.spacedaily.com/news/esa-general-03zb.html Specifically, a manned European mission]. ESA's {{w|Mars Express}} probe landed in 2003.
|
|-
| rowspan="2"| 2034
| US diabetes cases double, treatment costs triple
| [https://www.reuters.com/article/2009/11/27/us-diabetes-usa-costs-idUSTRE5AQ0C220091127 U.S. diabetes cases to double, costs triple by 2034]
|
|-
| US builds autonomous robot army
| The concept of robots built for military service is another common element of science fiction stories. [https://www.aos-inc.com/index.php/medialias/press-releases?id=112 Unmanned Systems] article, about the [https://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA522247 2009-2034 Unmanned Systems Integrated Roadmap] publication ([https://www.amazon.com/2009-Unmanned-Integrated-Aircraft-Technologies-ebook/dp/B0047743A0 details at Amazon]).
|
|-
| rowspan="3"| 2035
| 80% of America's energy comes from renewable sources
| From fact sheet on Obama's [https://www.whitehouse.gov/the-press-office/2011/01/25/fact-sheet-state-union-president-obamas-plan-win-future State of the Union.]
|
|-
| Himalayan glaciers down 80% in size
| From an IPCC report on [https://web.archive.org/web/20100116132657/https://www.ipcc.ch/publications_and_data/ar4/wg2/en/ch10s10-6-2.html The Himalayan glaciers] that has been analysed in quite some depth. See for example detailed article on an [https://www.yaleclimateconnections.org/2010/02/anatomy-of-ipccs-himalayan-glacier-year-2035-mess/ anatomy of IPCC’s mistake].
|
|-
| Arctic sea lane opens
| [https://www.ft.com/cms/s/0/730ef8fe-27e1-11e0-8abc-00144feab49a.html#axzz3OBgEHYNY Arctic sea lane could open by 2035]
|
|-
| rowspan="2"| 2036
| 80% of US has access to high-speed rail
| [https://www.wnyc.org/story/284946-obama-80-percent-of-americans-should-have-access-to-high-speed-rail-by-2036/ Obama: 80 Percent of Americans Should Have Access to High Speed Rail By 2036]
|
|-
| Asteroid Apophis misses/hits Earth
| 99942 Apophis is a near-Earth asteroid that caused a brief period of concern in December 2004 because initial observations indicated a probability of up to 2.7% that it would hit Earth on April 13, 2029.
|
|-
| rowspan="2"| 2037
| Arctic ice-free in September
| {{w|Arctic sea ice decline}}
|
|-
| Social Security trust fund exhausted
| {{w|Social Security (United States)|Social Security}}
|
|-
| rowspan="2"| 2038
| 32-bit timestamps roll over, causing Y2K-level chaos
| On 03:14:07 UTC on 19 January 2038, the value of time_t rolls over, that is it will return to zero. time_t is a computing standard measurement of time; it is a count of the number of seconds since 00:00:00 UTC on 1 January 1970. time_t is used by most computer systems to store date and time information. It is recommended that new software should convert to a 64 bit time_t; indeed, most operating systems designed to run on 64-bit hardware already use signed 64-bit time_t integers. This would give an epoch of 15:30:08 UTC on 4 December 292,277,026,596 (292 billion years away). Of course, legacy systems may not be upgradable so action taken now should prevent this becoming a problem closer to 2038...
|
|-
| "Big One" hits California
| [https://www.presstelegram.com/technology/20080414/the-big-one-likely-to-hit-by-2038 `The big one' likely to hit by 2038]
|
|-
| rowspan="3"| 2039
| US population hits 400 Million
| [https://www.prb.org/Publications/Articles/2008/us400million.aspx U.S. Population Projected to Hit 400 Million in 2039]
|
|-
| Severe heat waves become commonplace
| [https://news.stanford.edu/news/2010/july/extreme-heat-study-070810.html Heat waves and extremely high temperatures could be commonplace in the U.S. by 2039, Stanford study finds]
|
|-
| Scientology becomes majority religion in US
| [https://home.snafu.de/tilman/2039.html Essay: Scientology in the year 2039]
|
|-
| rowspan="2"| 2040
| Arctic summers ice-free
| [https://www.livescience.com/9419-arctic-summer-ice-free-2040.html Arctic Summer Could be Ice-Free by 2040]
|
|-
| Nanotechnology makes humans immortal
| [https://www.computerworld.com/article/2528330/app-development/nanotech-could-make-humans-immortal-by-2040--futurist-says.html Nanotech could make humans immortal by 2040, futurist says]
|
|-
| 2041
| Social Security trust fund exhausted
| {{w|Social Security (United States)|Social Security}}
|
|-
| 2043
| World population passes 9 Billion
| {{w|Population growth}}
|
|-
| rowspan="2"| 2044
| Mankind genetically engineered to be happy
| Premise of the movie [https://www.imdb.com/title/tt1363468/ Zenith] - further details are in the [https://www.filmjournal.com/filmjournal/content_display/esearch/e3i25130cd57f1590bda4527c098ac85b01 film review for Zenith.]
|
|-
| Childhood obesity reaches 100%
| [https://www.ivanhoe.com/channels/p_channelstory.cfm?storyid=11414 100-Percent Childhood Obesity Predicted by 2044]
|
|-
| 2045
| Humans and machines merge
| {{w|Ray Kurzweil}} predicts of a 'singularity' which will lead to a race of super intelligent beings.
|
|-
| 2046
| World's natural resources depleted
| [https://raphaelvanlaer.wordpress.com/2012/02/22/peak-uncertainty-when-will-we-run-out-of-fossil-fuels/ Peak uncertainty, when will we run out of fossil fuels?]
|
|-
| rowspan="3"| 2047
| World ruled by banks and corporations
| [https://www.amazon.co.uk/Future-Schlock-2047-RM-Krakoff-ebook/dp/B0039IT37Q Future Schlock - the story of a world turned upside down in 2047]
|
|-
| Tobacco industry fails
| [https://www.news.wisc.edu/16857 Experts: Big Tobacco dead by 2047, possibly sooner]
|
|-
| US begins using autonomous attack drones
| [https://www.theguardian.com/world/2009/aug/22/us-air-force-drones-pilots-afghanistan US Air Force prepares drones to end era of fighter pilots]
|
|-
| rowspan="3"| 2048
| Salt-water fish extinct from overfishing
| WWF report on [https://wwf.panda.org/about_our_earth/blue_planet/problems/problems_fishing/ unsustainable fishing.]
|
|-
| Unisex bathing suits cover body from shoulder to ankle
| [https://future.wikia.com/wiki/RyansWorld:_Bathing_Suits_of_the_Future RyansWorld: Bathing Suits of the Future]
|
|-
| Entire US population overweight
| [https://web.archive.org/web/20090321075605/https://thestatsblog.wordpress.com/2008/07/29/scientists-say-thin-people-face-extinction-in-united-states-everyone-will-be-overweight-by-2048-%E2%80%93-and-less-smart Scientists Say Thin People Face Extinction in United States: Everyone Will Be Overweight by 2048 – And Less Smart (archive)]
|
|-
| rowspan="3"| 2049
| $1,000 computer exceeds computational ability of humanity
| [https://www.americanbar.org/content/newsletter/publications/technology_e_report_home/2007_may_technotes.html TechNotes: Trends in Technology]
|
|-
| Singularity occurs
| [https://www.prismdecision.com/the-singularity-is-near The Singularity Is Near]
|
|-
| Fishing industry collapses
| This tends to happen when your food-stock is extinct{{citation needed}} - see WWF report on [https://wwf.panda.org/about_our_earth/blue_planet/problems/problems_fishing/ unsustainable fishing.]
|
|-
| rowspan="5"| 2050
| 80% of Earth's population lives in urban centers
| [https://infochangeindia.org/population/books-a-reports/80-of-world-population-will-soon-be-in-urban-areas.html 80% of world population will soon be in urban areas]
|
|-
| China controls space
| [https://books.google.com/books?id=op851Uf99LQC&dq=China+controls+space+2050&source=gbs_navlinks_s Space Science & Technology in China: A Roadmap to 2050]
|
|-
| Sex with robots possible
| [https://www.livescience.com/1951-forecast-sex-marriage-robots-2050.html Forecast: Sex and Marriage with Robots by 2050]
|
|-
| Cars banned from European cities
| [https://www.telegraph.co.uk/motoring/news/8411336/EU-to-ban-cars-from-cities-by-2050.html EU to ban cars from cities by 2050]
|
|-
| One million species extinct from climate change
| [https://news.nationalgeographic.com/news/2004/01/0107_040107_extinction.html By 2050 Warming to Doom Million Species, Study Says]
|
|-
| 2051
| Atmosphere escapes into space
| [https://www.thehulltruth.com/boating-outdoor-photos/255705-have-you-ever-seen-fallstreak-hole.html Conspiracy theory] relating to {{w|Fallstreak hole}} or hole punch clouds.
|
|-
| 2052
| Medicare, Medicaid, and Social Security spending exceed total US revenue
| {{w|Social Security (United States)|Social Security}}
|
|-
| rowspan="3"| 2053
| US budget balanced
| [https://crfb.org/blogs/omb-releases-long-term-projections-fy2015-budget-proposal OMB releases long-term projections for the FY2015 budget proposal]
|
|-
| Majority of Americans in prison
| [https://articles.philly.com/1992-06-14/news/26032105_1_prison-officials-prison-time-prison-commissioners 'Beyond Bricks And Bars' As Jails Overflow, The Lock-'em-up Credo Is Drawing Unlikely Criticism - From Prison Officials Themselves]
|
|-
| Cars driven by dogs
|
| This has [https://www.youtube.com/watch?v=BWAK0J8Uhzk already occurred] in 2012! However, it is not as widespread as the prediction may be implying.
|-
| 2054
| Hunger becomes unimaginable global problem
| [https://www.albionmonitor.com/0403a/earth2054.html Hunger Could Be 'Unimaginable' Global Problem By 2054]
|
|-
| rowspan="3"| 2055
| Atmospheric CO2 doubled
| [https://cmi.princeton.edu/wedges/flash_intro.php Carbon Mitigation Initiative: Stabilization Wedges]
|
|-
| Oil runs out
| [https://raphaelvanlaer.wordpress.com/2012/02/22/peak-uncertainty-when-will-we-run-out-of-fossil-fuels/ Peak uncertainty, when will we run out of fossil fuels?]
|
|-
| Copper, tin, lead, gold, and nickel all exhausted
| [https://www.environmentalgraffiti.com/environment/5-valuable-metals-that-could-vanish-by-2055 5 Valuable Metals That Could Vanish by 2055]
|
|-
| rowspan="2"| 2056
| RFID-tagged driverless cars
| [https://www.zdnet.com/article/rfid-tagged-driverless-cars-on-roads-by-2056/ RFID-tagged driverless cars on roads by 2056]
|
|-
| Robots given same rights as humans
| [https://www.cc.gatech.edu/news/robots-given-same-rights-humans-2056 Robots Given Same Rights As Humans By 2056]
|
|-
| rowspan="2"| 2057
| 150 Japanese settlers on Mars
| [https://connection.ebscohost.com/c/articles/9011051292/will-japan-colonize-mars Will Japan colonize Mars?]
|
|-
| Colorado River runs dry
| [https://news.agu.org/press-release/colorado-river-reservoirs-could-bottom-out-from-warming-business-as-usual/ Colorado River Reservoirs Could Bottom Out From Warming]
|
|-
| 2058
| Smoking ends in New Zealand
| [https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10698966 Smoking to die out in NZ by 2058]
|
|-
| 2059
| Humans have domesticated robots
| [https://diehardempiricist.blogspot.co.nz/2012/05/6-may-2011-virtual-necking-demography.html Virtual necking, demography, and robots]
|
|-
| rowspan="4"| 2060
| Human race lives in peace
| [https://www.arasfoundation.org/vision.html ARAS vision/mission]
|
|-
| Extreme droughts across much of Earth
| [https://wdas.cosmosmagazine.com/news/extreme-drought-across-most-earth-30-years/ Extreme drought across most of Earth by 2060]
|
|-
| Global temperature rise reaches 4 °C
| {{w|Avoiding dangerous climate change}}
|
|-
| Oil runs out again
| [https://business.financialpost.com/2011/04/01/oil-may-run-out-by-2060-hsbc/?__lsa=98a7-5c61 Oil may run out by 2060: HSBC]
|
|-
| 2061
| Halley's comet returns
| Halley's comet returns to the inner solar system (the vicinity of earth and the sun) every 75.3 years. The last time it was near earth was in 1985-1986. When it next returns, its closest approach to the sun will occur on [https://ssd.jpl.nasa.gov/horizons.cgi 28 July 2061.]
|-
| rowspan="2"| 2062
| Uganda hosts World Cup
| [https://shillingscents.blogspot.co.nz/2010/07/uganda-to-host-world-cup-in-2062.html Uganda to host world cup in 2062]
|
|-
| The Jetsons
| {{w|The Jetsons}} was an animated science fiction sitcom that first aired in 1962. The show was set in the year 2062.
|
|-
| rowspan="4"| 2063
| First human clones reach adulthood
| [https://au.ign.com/articles/2004/04/28/the-fall-last-days-of-gaia-diary-2 The Fall - Last Days of Gaia Diary #2]
|
|-
| Population of Moon reaches 100,000
| Reading Eagle newspaper article from July 17, 1963 - [https://news.google.com/newspapers?nid=1955&dat=19630717&id=PhgrAAAAIBAJ&sjid=B50FAAAAIBAJ&pg=4055,6599008 Moon Population of 100,000 Is Predicted for 2063] and [https://www.paleofuture.com/blog/2008/3/14/air-force-predictions-for-2063-1963.html Air Force Predictions for 2063 (1963)]
|
|-
| Population of Mars reaches 10,000
| [https://www.paleofuture.com/blog/2008/3/14/air-force-predictions-for-2063-1963.html Air Force Predictions for 2063 (1963)]
|
|-
| Spacecraft exceed speed of light
| Physics as currently understood states that it is impossible to exceed the speed of light. A monumental shift in our physics would have had to have occurred for this to come true. This is a reference to the 8th Star Trek feature Film: "Star Trek: First Contact" where Zefram Cochrane performs the first human Warp Flight on April 5, 2063.
|
|-
| 2064
| Clean Air Act finishes reducing haze in national parks to natural levels
| [https://www.cleanhouston.org/air/features/hazyfuture.htm State plan guarantees a hazy future for Texas’ wilderness areas]
|
|-
| rowspan="2"| 2065
| Last coral reefs die out
| From an [https://www.edgeofexistence.org/coral_reef_conservation/coral_reef_video.php article about a video called Reefs on the Edge] set in 2065 where a 15-year-old girl tells her grandfather's stories of coral reefs, and their demise.
|
|-
| Chernobyl cleanup complete
| [https://rt.com/politics/chernobyl-clean-in-55-years-time/ Chernobyl clean in 55 years time?]
|
|-
| 2066
| Cyprus achieves its goal
| This is from some [https://www.cyprus-forum.com/cyprus33608-110.html#p665612 forum posts on the decendants of Cypriots] that lends support to the autonomy of Cyprus from Greek or Turkey.
|
|-
| rowspan="2"| 2067
| Americans live in domed cities and watch 3D TV
| The article at [https://blogs.lib.unc.edu/ncm/index.php/2013/11/15/artifact-of-the-month-slide-rule-1916/ Artifact of the Month: Slide rule, 1916] includes information from the International Slide Rule Museum that "in 1967, Keuffel & Esser Co. commissioned a study of the future, predicting that Americans in 2067 would live in domed cities and watch 3D television."
|
|-
| Redheads go extinct
| [https://science.howstuffworks.com/life/genetic/redhead-extinction.htm Are redheads going extinct?]
|
|-
| rowspan="3"| 2068
| Ozone hole over Antarctic finishes recovering
| [https://www.theozonehole.com/recovery.htm NASA Study Finds Clock Ticking Slower On Ozone Hole Recovery]
|
|-
| Lord Jesus rules the Earth from Throne in Jerusalem.
| [https://myth-one.com/chapter_8.htm The Resurrections -- What Really Happens]
|
|-
| Entire world population gay due to chemicals in the water
| [https://thedailybanter.com/2013/01/alex-jones-the-government-is-trying-to-make-more-gay-people/ Alex Jones talks about chemicals that make people gay]
|
|-
| 2069
| Public masturbation legalized
| [https://uncyclopedia.com/wiki/UnNews:It's_still_not_okay_to_Pull_Your_Penis_out_in_Public It's still not okay to Pull Your Penis out in Public]
|
|-
| rowspan="3"| 2070
| World population peaks
| [https://www.newscientist.com/article/dn1108-global-population-to-peak-in-2070.html Global population to peak in 2070]
|
|-
| City-scale flooding disasters
| [https://www.telegraph.co.uk/news/earth/earthnews/3317033/City-scale-flooding-disasters-predicted-by-2070.html City-scale flooding disasters predicted by 2070]
|
|-
| 60% of world's energy comes from renewable sources
| [https://www.ssisolarenergy.com/solar-alternative-energy/ What Is Alternative Energy All About?]
|
|-
| rowspan="2"| 2071
| Europe's temperatures rise by 3 °C
| [https://www.umweltbundesamt.de/en/topics/climate-energy/climate-change-adaptation/adaptation-tools/project-catalog/peseta-projection-of-economic-impacts-of-climate Projection of Economic impacts of climate change in Sectors of the European Union based on bottom-up Analysis]
|
|-
| World summer temperatures rise by 5 °C
| [https://www.climateadaptation.eu/denmark/climate-change/ See "Air temperature changes in the 21st century"]
|
|-
| 2072
| US retirement age is set to 75
| [https://money.usnews.com/money/retirement/articles/2012/06/11/how-high-will-the-retirement-age-go Up to 70-80 years]
|
|-
| 2073
| Oceans do not rise one foot
| [https://www.skepticalscience.com/sea-level-rise-predictions.htm More like 2 feet]
|
|-
| rowspan="2"| 2074
| Number of 100-year-olds reaches one million
| [https://www.highbeam.com/doc/1P2-8848188.html UK to have 1 million centenarians by 2074]
|
|-
| Supertyphoons hit Japan
| [https://www.japantimes.co.jp/news/2009/09/08/national/super-typhoons-in-store-as-seas-warm/ Super typhoons in store as seas warm]
|
|-
| 2075
| US retirement age set to 69
| [https://www.csmonitor.com/Business/Latest-News-Wires/2010/1112/Retirement-age-at-69-Deficit-plan-hits-Social-Security Retirement age at 69? Deficit plan hits Social Security]
|
|-
| rowspan="2"| 2076
| Average scientific paper has more than 24 authors
| [https://doclib.uhasselt.be/dspace/bitstream/1942/871/1/yitzhaki373.PDF Multiple Authorship in Biochemistry and Other Fields] (PDF)
|
|-
| Social Security trust fund exhausted
| {{w|Social Security (United States)|Social Security}}
|
|-
| 2078
| Newspapers become obsolete and die out
| The same prediction was made for 2017 and 2022. Even when most prognosticators agree that something will happen, there can still be much disagreement about ''when'' it will happen.
|
|-
| rowspan="4"| 2079
| US debt reaches 716% of GDP
| {{w|US Debt}}
|
|-
| Lodgepole pines disappear from Northwest
| [https://oregonstate.edu/ua/ncs/archives/2011/feb/climate-change-causing-demise-lodgepole-pine-western-north-america Climate change causing demise of lodgepole pine in western North America]
|
|-
| Floods commonplace
| [https://www.sciencedaily.com/releases/2009/01/090108101627.htm Floods To Become Commonplace By 2080]
|
|-
| Religion marginalized
| https://www.bbc.com/news/uk-11347073
|
|-
| rowspan="2"| 2080
| Federal spending reaches 70% of GDP
| [https://crfb.org/sites/default/files/our_debt_problems_are_far_from_solved_updated_2.pdf Our debt problems are far from solved] (PDF)
|
|-
| UK population doubles
| [https://forums.canadiancontent.net/international-politics/69603-britains-population-hit-110-million.html Britain's population to hit 110 million]
|
|-
| 2082
| World population declines to one billion
| [https://www.paulchefurka.ca/Population.html Population: The Elephant in the Room]
|
|-
| 2084
| Robot policemen introduced
| [https://www.thetechherald.com/articles/Robotic-cops-set-to-stamp-out-crime-by-2084 Robotic cops set to stamp out crime by 2084]
|
|-
| 2085
| US deficit reaches 62% of GDP
| [https://moneybob.com/2010/06/28/paul-krugman-throws-in-towel-says-were-headed-for-another-depression/ Paul Krugman Throws In Towel, Says We’re Headed For Another Depression]
|
|-
| 2088
| Japan becomes all-robot country
| [https://www.theretributioners.tv/erics-blog/2009/11/25/-japan-to-become-all-robot-country-by-2088.html Japan To Become All Robot Country By 2088]
|
|-
| 2089
| World halts fossil fuel use
| {{w|Fossil Fuels}}
|
|-
| rowspan="2"| 2090
| Global warming hits 7 °C
| [https://www.reportingclimatescience.com/news-stories/article/models-warn-of-7c-dangerous-climate-change-by-2090.html Models warn of 7C dangerous climate change by 2090]. Climate change, especially global warming, is a [[:Category:Climate change|recurring theme]] in xkcd.
|
|-
| Global warming hits 4 °C
| Summarized [https://www.global-warming-forecasts.com/2090-climate-change-global-warming-2090.php here]. In reference to Andy Bowers, “Analysis: Scientists say global warming could affect California's drinking water supply,” NPR All Things Considered, June 22, 2001
|
|-
| rowspan="11"| 2100
| Global warming around 5-7 °C
| [https://grist.org/article/bau-fd/ Hadley Center study warns of ‘catastrophic’ 5-7°C warming by 2100 on current emissions path]
|
|-
| Sea levels have risen by a meter or more
| {{w|Future sea level}}
|
|-
| Joshua trees nearly extinct
| [https://news.discovery.com/earth/joshua-trees-climate-change-110325.htm Joshua Trees Nearly Wiped Out by 2100?]
|
|-
| Earth's climate resembles that of the Cretaceous
| [https://www.pnas.org/content/107/2/576 Atmospheric CO2 concentrations during ancient greenhouse climates were similar to those predicted for A.D. 2100]
|
|-
| Germany tropical
| [https://www.spiegel.de/international/spiegel/climate-change-predictions-a-tropical-germany-by-2100-a-463378.html Climate Change Predictions: A Tropical Germany by 2100?]
|
|-
| Emperor penguins extinct
| [https://news.bbc.co.uk/2/hi/science/nature/7851276.stm Emperor penguins face extinction]
|
|-
| Arctic permafrost thaws
| [https://www.scientificamerican.com/article/surface-permafrost-could/ Surface Permafrost Could Disappear by 2100]
|
|-
| Rising seas flood coastal cities
| [https://uanews.org/story/rising-seas-will-affect-major-us-coastal-cities-2100 Rising Seas Will Affect Major U.S. Coastal Cities by 2100]
|
|-
| Rain forests mostly gone due to climatic shifts
| [https://www.dailykos.com/story/2010/08/06/890970/-Massive-Loss-of-Rainforest-Species-by-2100-eKos-Earthship-Friday Massive Loss of Rainforest Species by 2100]
|
|-
| All coral reefs gone
| [https://planetsave.com/2010/10/15/coral-reefs-gone-by-2100/ Coral Reefs Gone by 2100?]
|
|-
| Gillette introduces 14-bladed razor
| Each iteration of the Gillette line of safety razors has one more blade than the previous one. MadTV has also [https://www.youtube.com/watch?v=2FAP8o5ZEo0 parodied] this. Over five years before MadTV did so, the Australian comedy group the D-Generation parodied the first two-bladed razor as the [https://www.youtube.com/watch?v=YleuLyCUx28 Gillette 3000] with 16 blades.
|
|-
| 2101
| WAR WAS BEGINNING
| References {{w|Zero Wing}}, a 1989 Japanese computer game set in 2101, famous for poorly translated English and the source for "{{w|All your base are belong to us}}". See [[286: All Your Base]]
|
|}

==Transcript==

:<big>'''THE FUTURE'''</big>
:'''According to Google search results'''
:Events for each year determined by the first page of Google search results for the phrases:
:"By <year>" "In year"
:"By the year <year>" "In the year <year>"
:"Will * by the year <year>" "Will * in the year <year>"
:"In <year>, * will" "By <year>, * will"
:
:;2012
::World population reaches 7 billion
::Flying cars reach market
::Canada cuts greenhouse emissions to 6% below 1990 levels as per Kyoto
::Apocalypse occurs
:;2013
::National debt paid off through President Clinton's plans
::Microchipping of all Americans begins
::Homelessness ended in Massachusetts
::Health care reform law repealed
:;2014
::US leaves Afghanistan
::GNU/Linux becomes dominant OS
:;2015
::New Horizons reaches Pluto
::Health care law causes hyperinflation
::192 UN member nations achieve millennium development goals:
::*Extreme poverty and hunger eradicated
::*Universal primary education implemented
::*Women empowered, gender equality reached
::*Environmental stability ensured
:;2016
::Baby boomers begin turning 65
::Android takes 38% of the smartphone market
::Android takes 45% of the smartphone market
::Windows Phone overtakes iOS in smartphones
:;2017
::China completes unmanned Lunar sample-return mission
::Social Security stops running surplus
::US budget balanced
::Newspapers become obsolete and die out
::Cosmetic surgery doubles
:;2018
::Social Security stops running surplus
::Jesus returns to Earth
:;2019
::Social Security stops running surplus
::Every baby has genes mapped at birth
:;2020
::Solar power becomes cheaper than fossil fuels
::Keyboards and mice become obsolete
::New Tappan Zee bridge constructed
:;2021
::US debt reaches 97% of GDP
::US unemployment falls to 2.8%
::Restored caliphate unifies Middle East
::Lake Mead evaporates
:;2022
::Kilimanjaro snow-free
::HTML 5 finished
::Newspapers become obsolete and die out
:;2023
::Jesus returns to Earth (again)
::US debt passes 100% of GDP
::All unprotected ancient forests gone from Pacific Northwest
:;2024
::Atlantis begins to reappear
::Orangutans extinct in wild
::China lands men and women on the moon
::NASA sets up permanent moon base
::Female professionals pass males in pay
:;2025
::World population reaches 8 billion
::Two billion people face water shortages
::62 MPG cars introduced
::US power fades
:;2026
::Atlantis emerges completely
::Rock Bands die out
::US debt paid off
::Car accidents cease
::West coast falls into ocean
:;2027
::Japan introduces new fastest maglev train
::Lyndon Larouche-planned Mars colony established
::Social Security stops running surplus
:;2028
::Tobacco outlawed
::40% of coral reefs gone
::US debt paid off
::Social Security stops running surplus
:;2029
::Social Security trust fund exhausted
::Computers pass the Turing Test
::Aging reversed
::Wikipedia reaches 30 million articles
:;2030
::Half of Amazon rain forest lost to logging
::Cancer deaths double from 2008 levels
::Arctic ice-free in summer
:;2031
::Computers controlled by thought
::Realtors replaced by technology
::Social Security trust fund exhausted
:;2032
::"Big One" hits San Francisco
::US elects first married lesbian president
::Entire world converted to Christianity
:;2033
::Kilimanjaro ice disappears
::India becomes superpower
::Europe reaches Mars
:;2034
::US diabetes cases double, treatment costs triple
::US builds autonomous robot army
:;2035
::80% of America's energy comes from renewable sources
::Himalayan glaciers down 80% in size
::Arctic sea lane opens
:;2036
::80% of US has access to high-speed rail
::Asteroid Apophis hits/misses Earth
:;2037
::Arctic ice-free in September
::Social Security trust fund exhausted
:;2038
::32-bit timestamps role over, causing Y2K-level chaos
::"Big One" hits California
:;2039
::US population hits 400 million
::Severe heat waves become commonplace
::Scientology becomes majority religion in US
:;2040
::Arctic summers ice-free
::Nanotechnology makes humans immortal
:;2041
::Social Security trust fund exhausted
:;2042
:;2043
::World population passes 9 billion
:;2044
::Mankind genetically engineered to be happy
::Childhood obesity reaches 100%
:;2045
::Humans and machines merge
:;2046
::World's natural resources depleted
:;2047
::World ruled by banks and corporations
::Tobacco industry fails
::US begins using autonomous attack drones
:;2048
::Salt-water fish extinct from overfishing
::Unisex bathing suits cover body from shoulder to ankle
::Entire US population overweight
:;2049
::$1.000 computer exceeds computational ability of humanity
::Singularity occurs
::Fishing industry collapses
:;2050
::80% of Earth's population lives in urban centers
::China controls space
::Sex with robots possible
::Cars banned from European cities
::One million species extinct from climate change
:;2051
::Atmosphere escapes into space
:;2052
::Medicare, Medicaid, and Social Security spending exceed total US revenue
:;2053
::US budget balanced
::Majority of Americans in prison
::Cars driven by dogs
:;2054
::Hunger becomes unimaginable global problem
:;2055
::Atmospheric CO2 doubled
::Oil runs out
::Copper, tin, lead, gold, and nickel all exhausted
:;2056
::RFID-tagged driverless cars
::Robots given same rights as humans
:;2057
::150 Japanese settlers on Mars
::Colorado River runs dry
:;2058
::Smoking ends in New Zealand
:;2059
::Humans have domesticated robots
:;2060
::Human race lives in peace
::Extreme droughts across much of Earth
::Global temperature rise reaches 4°C
::Oil runs out again
:;2061
::Halley's comet returns
:;2062
::Uganda hosts World Cup
::The Jetsons
:;2063
::First human clones reach adulthood
::Population of Moon reaches 100,000
::Population of Mars reaches 10,000
::Spacecraft exceed speed of light
:;2064
::Clean Air Act finishes reducing haze in national parks to natural levels
:;2065
::Last coral reefs die out
::Chernobyl cleanup complete
:;2066
::Cyprus achieves its goal
:;2067
::Americans live in domed cities and watch 3D TV
::Redheads go extinct
:;2068
::Ozone hole over Antarctic finishes recovering
::Lord Jesus rules the Earth from Throne in Jerusalem.
::Entire world population gay due to chemicals in the water
:;2069
::Public masturbation legalized
:;2070
::World population peaks
::City-scale flooding disasters
::60% of world's energy comes from renewable sources
:;2071
::Europe's temperatures rise by 3°C
::World summer temperatures rise by 5°C
:;2072
::US retirement age is set to 75
:;2073
::Oceans do not rise one foot
:;2074
::Number of 100-year-olds reaches one million
::Supertyphoons hit Japan
:;2075
::US retirement age set to 69
:;2076
::Average scientific paper has more than 24 authors
::Social Security trust fund exhausted
:;2077
:;2078
::Newspapers become obsolete and die out
:;2079
::US debt reaches 716% of GDP
::Lodgepole pines disappear from Northwest
::Floods commonplace
::Religion marginalized
:;2080
::Federal spending reaches 70% of GDP
::UK population doubles
:;2081
:;2082
::World population declines to one billion
:;2083
:;2084
::Robot policemen introduced
:;2085
::US deficit reaches 62% of GDP
:;2086
:;2087
:;2088
::Japan becomes all-robot country
:;2089
::World halts fossil fuel use
:;2090
::Global warming hits 7°C
::Global warming hits 4°C
:;2091
:;2092
:;2093
:;2094
:;2095
:;2096
:;2097
:;2098
:;2099
:;2100
::Global warming around 5-7°C
::Sea levels have risen by a meter or more
::Joshua trees nearly extinct
::Earth's climate resembles that of the Cretaceous
::Germany tropical
::Emperor penguins extinct
::Arctic permafrost thaws
::Rising seas flood coastal cities
::Rain forests mostly gone due to climatic shifts
::All coral reefs gone
::Gillette introduces 14-bladed razor
:;2101
::WAR WAS BEGINNING

{{comic discussion}}

[[Category:Large drawings]]
[[Category:Timelines]]
[[Category:Google Search]]
[[Category:Earthquakes]]
[[Category:Climate change]]
[[Category:Singularity]]
[[Category:Renewable energy]]
[[Category:Smartphones]]
[[Category:Wikipedia]]

Talk:304: Nighttime Stories

2024-08-25T20:46:56Z

172.69.79.191: Correcting an (understandable, but non-standard) 'fake' signature. It's even possible there' is/will be a user of that name, etc, so best not to let stand.

Why is it out of '''six''' books? How was that number reached? Depending on your point of view, it could be out of four (counting only ''Ender's Game'' and the ''Speaker''-''Xenocide''-''Children of the Mind'' trilogy) or nine (if we include the Shadow books, sans ''Shadows Alive'') or eleven (if we include the Earth as-yet-unfinished trilogy) or fourteen (if we include the lesser books like ''A War of Gifts'') or even sixteen if we include the as-yet-unreleased books - but I can't see how someone got six. To do this you'd have to take away part of a series, like only counting ''Ender's Shadow'' and ''Shadow of the Hegemon'', but not the other Shadow books. I guess you could include only the main quartet and the Earth books, but if you're going to include the Earth books why not include some of the others? --[[Special:Contributions/173.245.55.72|173.245.55.72]] 17:33, 9 March 2014 (UTC)

This is true. At the time of this comic there where only published 4-5 books in the series. The fifth came out in 2007. I have deleted the (out of 6) comment as the 6. came out in 2008 and more have followed since. The important issue is that the three books mentioned are the first three.[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 19:49, 28 March 2014 (UTC)

I think they wrote out of 6 because there are 6 main books with Ender in them. Ender's Game, Ender's Shadow, Ender in Exile, Speaker for the Dead, Xenocide, and Children of the mind.
[[Special:Contributions/108.162.219.159|108.162.219.159]] 13:13, 28 June 2014 (UTC)

Xenocide *is* my favorite. [[Special:Contributions/108.162.221.150|108.162.221.150]] 04:27, 15 August 2015 (UTC)

Part of the joke is that both are fans of the Ender series and should have much in common and to talk about, but Cueball gives up on her before even hearing her explanation. Sebastian --[[Special:Contributions/162.158.92.11|162.158.92.11]] 14:16, 8 November 2016 (UTC)

I'm more upset that he is implying Speaker for the Dead is any less bad than Xenocide. — [[User:Kazvorpal|Kazvorpal]] ([[User talk:Kazvorpal|talk]]) 23:13, 3 November 2019 (UTC)

That's a hot (and bad) take there, Kazvorpal. I question the judgement of someone who implies Speaker for the Dead is bad than someone who calls Xenocide their favorite in the series. I'm just speechless at how bad that opinion is.

C’mon, Children of the mind was way worse. Xenocide. — [[User:Waddle Deo]]

In my opinion, Ender's Game is the best book of the series[[User:I HAVE NO NAME|I HAVE NO NAME]] ([[User talk:I HAVE NO NAME|talk]]) 09:03, 20 August 2024 (UTC)

I think Xenocide and Ender's Game are about equal, though I don't know how you can compare Ender's Game to the other books while they are so different. Speaker is a close second, though I don't like Children of the Mind nearly as much. [[Special:Contributions/172.68.35.95|172.68.35.95]] 19:20, 25 August 2024 (UTC) Note: Don't sign ficticiously, especially if you miss the timestamp out. Use the <nowiki>~~~~</nowiki> string... This Talk page was lacking that (now automatic) hint at the top, however.

1716: Time Travel Thesis

2024-07-04T12:47:05Z

172.69.79.191: /* Explanation */

{{comic
| number = 1716
| date = August 5, 2016
| title = Time Travel Thesis
| image = time_travel_thesis.png
| titletext = 'Hey, what are those futuristic goggles for, anyway?' 'Oh, this is just a broken Google Glass. It was 2010's night at the club.'
}}

==Explanation==

[[Cueball]] has apparently been reading about {{w|time travel}}. He tells [[Megan]] about this, and Megan excitedly remarks that she did her college thesis on time travel which basically means that she is supposed to know a lot more about time travel than a guy who has just been "reading" about it.

Cueball, however, continues to ask her if she knows basic facts about time travel (like {{w|closed timelike curves}}, {{w|wormholes}} and {{w|exotic matter}}), like he is investigating if he has discovered facets about it that she would have overlooked while writing a thesis about it. Megan keeps trying to say that since she wrote a '''Time Travel Thesis''', (hence the title of the comic), she already knows all of this and much, much more, and she is obviously getting frustrated by Cueball's attempts to impress her with his "knowledge".

At this point Megan's future-self arrives with a ''Bzzzzt'', having used time travel to arrive at this exact moment in time. It seem she has continued her research and has successfully managed to make a time machine.

The reason she arrives is only to tell her younger self that this conversation with Cueball doesn't go anywhere and isn't important, and so present-Megan can leave and not waste her time anymore. Up till then, Megan was presumably reluctant to break off a conversation on the topic of time travel, since the conversation could potentially have improved, or perhaps because he at least had read about time travel which is a subject she would have a clear interest in since she wrote a thesis on it. But once the conversation began to run off track, it came as a relief to know that she could quit without the risk of missing out on anything important. Also, since Megan took the effort to time travel back to this exact moment, that must mean the conversation was so boring and uneventful she kept regretting having this conversation even far into the future to the point where she remembers it as one of the moments that need to be changed with her acquired time travel abilities.

And then she just walks away with her future-self leaving Cueball hanging in the last panel, having invented a completely new way to get out of useless/boring conversations.

Alternatively, future-Megan just makes an excuse to haul present-Megan off in order to prevent the latter from disclosing some details of time travel science to Cueball, which could have unintended consequences. However, using very advanced technology, or even violating physics law, for ''very mundane'' ends is very common in xkcd, so using time travel to prevent useless conversation is not surprising from Megan.

In either case, future-Megan finished this conversation before inventing time travel, and thus knows this conversation's outcome. So by coming back, she now changes her own (and Cueball's) future. Of course the general implications of being able to travel like this are enormous, and the paradoxes arising from such a possibility are endless, the most pressing (at the moment) being the {{w|Grandfather paradox|grandfather paradox}}, where a time traveler creates circumstances that negate their existence (such as killing their own grandfather), in this case, Older Megan going back in time to stop Younger Megan from finishing this conversation, who will eventually become Older Megan but with no reason to go back to tell Younger Megan to stop this boring conversation. It is worth noting, however, that the comic does not inherently cause a paradox: so long as the Megan who ''didn't'' finish the conversation stills travels back in time with the ''knowledge'' that the conversation needed to be stopped and still saves her younger self from wasting her time, a time loop can be logically sustained. (It is also worth noting that a [https://www.youtube.com/watch?v=XayNKY944lY&ab_channel=minutephysics "Mobius" time loop] is also perfectly possible, the grandfather paradox isn't a paradox if quantum entanglement is taken into account - something Megan would no doubt know)

It is possible that [[Randall]] may have had some conversations like this, where after having spent a lot of time getting nothing out of it himself, would have wished his future self had come back to tell him to just leave the conversation now.

In the title text present-Megan asks future-Megan about her futuristic googles and what they are for, presumably assuming they are needed for the time travel (maybe it is the backpack?). People from the future wearing weird clothing, often involving {{tvtropes|GogglesDoSomethingUnusual|eyewear of some sort}}, is a common trope in Science-Fiction. Movies like ''{{w|Back to the Future Part II}}'' (which tried to predict the fashion of 2015 back in 1989) didn't get it right, so this might be a commentary on those movies. However it turns out it's just some old and broken {{w|Google Glass}}. The only reason future Megan wears these is that she attended a party at the club that had a 2010s' night theme, possibly one at which similar futuristic gear is worn by other xkcd characters in the future, in [[318: Nostalgia]].

The fact that the Google Glass is broken and from 2010 alludes to Randall believing that the project was a fad that and that it will never pan out, even in the future. Indeed that seems to be the case. It seems generally that Randall is no fan of Google Glass, which was also shown earlier in [[1251: Anti-Glass]] and later again in [[1304: Glass Trolling]]. Google Glass has become a [[:Category:Google Glass|recurring theme]] in xkcd.

This is an indication of how far from the future she has traveled, as Google Glass was first released in the 2010s. It is not clear whether she is wearing Google Glass because it became popular in the 2010s or because it was an esoteric piece of hardware that people would readily associate with the 2010s. Consider that it is the 2020s, and we celebrate '90s and '00s parties. So it is safe to assume that Megan is at least from the 2030s. Also people attending retro dress-up parties frequently make mistakes and do not dress up exactly in-style, creating some anachronisms, especially if they dress up like they did many years ago.

==Transcript==
:[Cueball is facing Megan, talking to her.]
:Cueball: I've been reading about time travel.
:Megan: Cool! I did my thesis on time travel!

:[Cueball is now gesturing toward Megan. An electrical charge of some sort is shown occurring outside the panel in the bottom right corner behind Megan.]
:Cueball: Nice! So you know about closed timelike curves?
:Megan: Yup. Thesis.
:Cueball: Apparently wormholes can use exotic matter to–
:Megan: I know. Like I said–
:Charge: <big>''Bzzzt!''</big>

:[Megan has turned away from Cueball to the right. Megan from the future, wearing sunglasses, a headset and a machine strapped to her back has entered the frame from the right where the charge appeared.]
:Future-Megan: You can skip this conversation. It doesn't turn out to be important.
:Megan: Oh, thank God.

:[Cueball is standing alone, the two Megans have left the panel.]

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Time travel]]
[[Category:Google Glass]]
[[Category:Scientific research]]

Talk:1687: World War III+

2024-07-02T11:26:29Z

172.69.79.191:

The mouseover text mentions stripping a quote of its context... although this kind of makes the point of the context can often dilute the meaning, it seems that a counter point could be made by pointing out an example where the context is the source at least two major quotes (such as "No man is an island" and "Ask not for whom the bell tolls" both coming from John Donne).

Or I could just be being frivolous here?

[[User:Joshupetersen|Joshupetersen]] ([[User talk:Joshupetersen|talk]]) 04:15, 30 May 2016 (UTC)
:or maybe a good example could be Darwin's qoute on the eye, which many creationist nutjobs take out of context and annoy everyone else in the same way Randall shows annoyance in the rollover text
[[User:JMR|JMR]] ([[User talk:JMR|talk]]) 02:03, 30 May 2016 (BST)

Hey, Randall skipped World War XIII. --[[User:XndrK|XndrK]] ([[User talk:XndrK|talk]]) 04:20, 30 May 2016 (UTC)
:Of course! We couldn't have a World War XIII. The customers wouldn't go for it. XIII is an unlucky number.[[Special:Contributions/162.158.38.76|162.158.38.76]] 07:52, 28 September 2019 (UTC)

Maybe World War XIII is just sticks and stones again, considering XII? [[Special:Contributions/173.245.56.71|173.245.56.71]] 05:14, 30 May 2016 (UTC)
:Sticks and stones ''underground!!'' [[Special:Contributions/141.101.98.43|141.101.98.43]] 10:23, 30 May 2016 (UTC)

I swear that I've seen this exact joke somewhere before. Not just the general idea, but I mean down to the text. Can't find anything in searches though -- does anyone else remember seeing this before?--[[Special:Contributions/108.162.220.221|108.162.220.221]] 05:22, 30 May 2016 (UTC)
:It may be a memory of the black Cards Against Humanity 'question' card, that leaves a blank regarding ''what'' WW4 will be fought with so as to be answered with a non-sequiter white card? [[Special:Contributions/141.101.98.43|141.101.98.43]] 10:23, 30 May 2016 (UTC)
:There's a practically identical joke in The Onion's ''Book of Known Knowledge''. [[https://books.google.com/books?id=lCpzgOD0A6oC&pg=PA66&lpg=PA66&dq=onion+einstein+world+war&source=bl&ots=tt8vC86X3m&sig=gtvhl1l2F9pdcuWv7n-_c_sRofQ&hl=en&sa=X&ved=0ahUKEwil5Iedk4LNAhXNCD4KHWluBhQQ6AEINDAD#v=onepage&q=onion%20einstein%20world%20war&f=false]]

Comics released within the United State Memorial Day weekend. The unknown VIII-IX could reference Star Wars movies with their unknown scripts. [[Special:Contributions/141.101.98.15|141.101.98.15]]
:I made this misreading too, but it's VIII-XI, and I do not know of that many star wars movies planned. Could it be a final fantasy reference? --[[User:PsyMar|PsyMar]] ([[User talk:PsyMar|talk]]) 09:17, 30 May 2016 (UTC)
::When I was a kid in the early/mid 80s, I heard that Star Wars was originally written (before any movies were made) as a trilogy of trilogies. When I noticed Empire and Jedi as Chapter 5 & 6 (and when they were remasterd Star Wars being retitled A New Hope and numbered 4), this seemed confirmed. Then when the prequel trilogy was later made, this seemed doubly confirmed. So I think 9 movies is the most we'll ever see. - NiceGuy1 [[Special:Contributions/108.162.218.77|108.162.218.77]] 06:03, 1 June 2016 (UTC) I finally signed up! This comment is mine. [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 10:21, 9 June 2017 (UTC)
That's how I took it (as Final Fantasy). I think this would be unprecedented for Randall, but hilarious if so - it certainly reads like a riff on the FF series wildly varying levels of technology and war. [[Special:Contributions/108.162.219.5|108.162.219.5]] 19:42, 30 May 2016 (UTC)

Adding the black background to the transcript just makes it hard to read and kind of defeats the purpose of a transcript (since now it just looks like the comic in a different font). Can we keep this to the standard of all the other transcripts? [[Special:Contributions/141.101.98.80|141.101.98.80]] 08:44, 31 May 2016 (UTC)
:How is it harder to read? It is the standard to let the transcript reflect the comic with colors etc. See for instance: [[1168: tar]], [[1685: Patch]] and [[1684: Rainbow]]. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 09:54, 31 May 2016 (UTC)

;Quote taken out of context

The current text says: "He implies that this is actually a full quote by Einstein and that all other occurrences using only the "original" version of this quote are misrepresenting it. In this particular case it is a much stronger quote than the long version from the comic, but it is often the case that quotes taken out of context seem to have an entirely different meaning than originally intended." I completely disagree.

What Einstein is saying is that he is horrified at the weapons that are being developed; and that he fears that if World War III ever breaks out, we will bomb ourselves back into the Stone Age. He is not actually making a prediction about fourth and subsequent world wars.

The longer "quote" as lengthened by Randall says, instead, "Hey, I'll try my hand at being Nostradamus (or St Malachy) and predict specifically which weapons will be used to fight a long series of upcoming world wars!"

This, of course, does entirely change the meaning of the quote. The Einstein quote is to prompt thoughtful contemplation of how we use the powerful weapons we develop. The lengthened quote would prompt either incredulity at the speaker's naivety, or possibly wonder at how he came up with these predictions, if one believes them to be accurate.

In other words, lengthening the quote ''does'' change it to an entirely different meaning than originally intended. The original meant, "Hey, be careful!" The lengthened quote simply means, "I think I'm Nostradamus!" [[User:Jsharpminor|Jsharpminor]] ([[User talk:Jsharpminor|talk]]) 00:58, 1 June 2016 (UTC)

:I agree, that's what that block of text means, and that's part of the joke. The short, original quote is much stronger than the long version this comic offers, and quotes taken out of context have a different meaning that originally intended ("The end justifies the means", anyone?). You're invited to make it clearer, but I don't see the issue. [[User:Phineas81707|Phineas81707]] ([[User talk:Phineas81707|talk]]) 04:00, 1 June 2016 (UTC)

Right now the reasoning of how this explanation is incomplete states "There seems to be more to this comic than so far explained. Maybe a reference to all the Star Wars movies now planned...?". I vehementally disagree. I am completely convinced that there is no reference present or intended to the Star Wars franchise. The closest connections are the Roman numerals (which were being used for the World Wars long before even the first Star Wars existed) and the mention of warring with lasers (when laser weapons have appeared in countless other fictional places, it is far from unique to Star Wars). I actually find the explanation complete as is. PLEASE stop bloating the explanations with a load of unrelated information! Save the over-analysis for the comment section (and don't get me wrong, I LOVE over-analysis, just that the explanations should stick to explaning the comic, nothing more). :) - NiceGuy1 [[Special:Contributions/108.162.218.77|108.162.218.77]] 05:55, 1 June 2016 (UTC) This comment is also mine! [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 10:21, 9 June 2017 (UTC)

One of my friends said that here's a plot hole: the term "LASER" first appears in public in a 1959 paper, but Albert Einstein died in 1955. --[[Special:Contributions/108.162.222.130|108.162.222.130]] 14:39, 1 June 2016 (UTC)

Does World War IV as "sticks and stones" prefigure the use of homemade weapons in the war against militant Islamists since the fourth quarter of 2001? In this interpretation, World War III was the Cold War, and [http://www.latimes.com/opinion/la-op-beinart9dec09-story.html World War IV is the ongoing War on Terror], first against the Taliban and al-Qaeda and then against ISIL. --[[User:Tepples|Tepples]] ([[User talk:Tepples|talk]]) 13:13, 4 June 2016 (UTC)

'''That did not age well'''. [[Special:Contributions/172.69.33.187|172.69.33.187]] 17:28, 19 May 2022 (UTC)
: '''''Seriously.''''' [[Special:Contributions/172.69.79.191|172.69.79.191]] 11:26, 2 July 2024 (UTC)

Talk:2927: Alphabetical Cartogram

2024-05-02T23:10:06Z

172.69.79.191:

replaced incorrect explanation [[Special:Contributions/172.70.230.172|172.70.230.172]] 20:30, 2 May 2024 (UTC)

replaced incorrect explanation [[Special:Contributions/172.70.111.45|172.70.111.45]] 17:17, 1 May 2024 (UTC)
Is it me or is Hawaii strangely bigger than california. {{unsigned|172.70.100.40}}
:I think he's only counting the land area. The area between the islands may be creating an illusion that Hawaii is bigger. It's hard to tell just by looking, does anyone have the tech to measure this? P.S. remember to sign... [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 14:11, 1 May 2024 (UTC)

Im just wondering why Maine is still so big.... [[User:JushJosh|JushJosh]] ([[User talk:JushJosh|talk]]) 13:22, 1 May 2024 (UTC)Jush
:I know, right? That's what made me think it wasn't just a simple alphabetical listing. That, and Hawaii is bigger than Alaska, despite the fact that Alaska is substantially higher on the list. In fact, it even appears that Alaska is smaller than Maine! How did Randall decide on the sizes??? [[User:Pie Guy|Pie Guy]] ([[User talk:Pie Guy|talk]]) 16:01, 1 May 2024 (UTC)

The sad part is that Rhode Island grew. [[Special:Contributions/172.71.31.139|172.71.31.139]] 14:01, 1 May 2024 (UTC)

I believe it is some sort of ranking rather than swapping sizes as the chart suggests, as South Carolina appears to be smaller than normal (?) [[User:Primmy|Primmy]] ([[User talk:Primmy|talk]]) 14:56, 1 May 2024 (UTC)

Poor Utah :( [[User:Z1mp0st0rz|If you click on this you will get a fun surprise]] ([[User talk:Z1mp0st0rz|talk]]) 15:15, 1 May 2024 (UTC)

I believe the first paragraph is incorrect. I did a full comparison, and Texas shrank the most (dropping 41 places from size ranking to alphabetical ranking), while Connecticut as well as Delaware grew the most (each rising 41 places between the lists). [[Special:Contributions/172.71.255.28|172.71.255.28]] 15:40, 1 May 2024 (UTC)

This map gives a lot more land to Mexico. [[User:Weslar|Weslar]] ([[User talk:Weslar|talk]]) 16:31, 1 May 2024 (UTC)
:Mexico is not represented at all in the map. And all states are much smaller than in reality (unless you have a very big monitor, c.f. [[2911]]) --[[Special:Contributions/172.71.160.32|172.71.160.32]] 12:30, 2 May 2024 (UTC)
:I think [[User:Weslar|Weslar]] is saying that Mexico gains land, since (historically) it has everything south of Arizona, New Mexico, and Texas. (Source: Just visited the Alamo a couple weeks ago, on an eclipse vacation...) So the fact that the states are smaller makes Texas bigger. ([[User talk:tr0gd0r|talk]])

UNFORTUNATELY it seems that there are many errors in the actual relationship of sizes. I did a quick area take off of each state. These units are in miles using the real width of Colorado (since it is about the same place in the list) as the scale reference. https://imgur.com/a/hKIVjRZ. you can see immediately that Delaware and Alaska and Iowa are incorrect in the order.

Ignoring the Errors in the map and Assuming We are keeping the total area of the US the same and scaling the new map based on this total... then Alaska loses the most land area ( approx 510,000 mi) and Alabama gains the most Land area (156,000 mi). Looking at which state gained or lost the largest percentage of its land area shows that Minnesota is the least affected at only 4.6% or 4,200 mi and Wyoming is the most affected losing 98% of its land area or 95,000 miles.[[Special:Contributions/162.158.41.56|162.158.41.56]]

As a Wyomingite, I can't complain. We're still bigger than our population justifies. (fun fact, we get two whole senators despite lacking the population to actually justify a single house member)[[Special:Contributions/172.68.34.59|172.68.34.59]] 17:08, 1 May 2024 (UTC)

Alaska is STILL disproportionally small. [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 17:24, 1 May 2024 (UTC)

Utah is way too big (should be after Texas) and Idaho is too small (should be bigger than the Ms)

Why the hell is Massachusetts so BIG?! [[User:Psychoticpotato|Psychoticpotato]] ([[User talk:Psychoticpotato|talk]]) 13:01, 2 May 2024 (UTC)
:To account for all its Mass. [[Special:Contributions/172.71.242.175|172.71.242.175]] 13:51, 2 May 2024 (UTC)

I went further and measured the exact sizes of each state to the pixel: https://imgur.com/a/d6ruHvs really nerd sniped myself lol. The post includes excel screenshots as well as text, and the image I used at the bottom. Will explain methodology if anyone wants. Obviously all these discrepancies are due to the fact that the states actually have to fit together for the joke-map to work. [[User:Paintadot|Paintadot]] ([[User talk:Paintadot|talk]]) 13:48, 2 May 2024 (UTC)
:Having the pixel area for each state in the explanation would be really nice! Do you count the "border pixels" (or maybe half of them) to the pixel area? (not sure if that would be sufficient to have Alaska stay atop of Arizona ...) --[[Special:Contributions/172.71.160.32|172.71.160.32]] 14:39, 2 May 2024 (UTC)
::As drawn, the borders vary significantly in width. Usually 2 pixels wide, but often 3 or more. Between states, I divided them evenly to the best of my judgment. For the outer borders of the lower 48, Hawai'i, and Alaska, I added roughly one outer pixel. It's possible it could be done better, but it's kind of subjective anyway. Nevertheless it seems a lot of us agree that it's an interesting thing to try to measure. I imagine it was a lot of fun for Randall to try to balance his stated goal with keeping the shapes of the states more or less correct :) [[User:Paintadot|Paintadot]] ([[User talk:Paintadot|talk]]) 16:16, 2 May 2024 (UTC)
:I was going to take some time to establish 'drawn areas', myself (perhaps work out if it were contained area, 'hull' area, one-axis scale, etc) and add the likiest metric in the "Alphabetic" group of columns (remember to re-colspan!), but looks like like you've got that covered... [[Special:Contributions/172.71.102.254|172.71.102.254]] 15:10, 2 May 2024 (UTC)

I modified the table to include the data I gathered (https://imgur.com/a/d6ruHvs). I hope that's okay. This is my first contribution ^^' [[User:Paintadot|Paintadot]] ([[User talk:Paintadot|talk]]) 16:15, 2 May 2024 (UTC)

What definition of 'fair' is Randall using? --[[User:NeatNit|NeatNit]] ([[User talk:NeatNit|talk]]) 15:04, 2 May 2024 (UTC)
:{{wiktionary|fair#Adjective|Number 3}} [[Special:Contributions/172.71.102.254|172.71.102.254]] 15:10, 2 May 2024 (UTC)

The title is written weirdly (to me): "a more fair map". Wouldn't "a fairer map" be more usual? Does anyone know if this phrasing is a reference to something that I'm not getting? --[[Special:Contributions/172.69.79.191|172.69.79.191]] 23:10, 2 May 2024 (UTC)

Talk:532: Piano

2024-04-25T09:33:07Z

172.69.79.191: A4 -> E7

Maybe I'm wrong here, but by looking at the size of the piano compared with Cueball and having read the title text, I wonder if the joke might be that he wished for a 4-5 inch penis instead? I wasn't sure enoough to go ahead an change it though.{{unsigned|Athang}}
: If you look at the piano compared to Cueball's forearm plus hand, they are approximately the same length. Considering how the average male human is slightly shorter in height (1.7 m) than a grand piano is long (2 m), a to-scale pianist would be slightly shorter than Cueball's forearm. The average length of a 1.7 m tall person's forearm plus hand is about 47 cm, so the pianist would need to be about 40 cm. (1.7:2 = 0.85 ratio. 47 cm * 0.85 = 40 cm.) 40 cm is almost 16 inches. In [[526: Converting to Metric]], 14 cm is labeled "penis", and according to the {{w|Kinsey Institute}}, the largest medically recorded was 13.5 inches (34 cm).

:Alternatively, the title text might have been saying "Good thing [the genie] didn't make [his penis] smaller [than it was before?], or [his penis would] need someone three inches tall to play [with] it." [[User:Tryc|Tryc]] ([[User talk:Tryc|talk]]) 15:20, 28 June 2013 (UTC)

:The extremely clear implication is that he asked for a 12-inch pianist, echoing the original joke. Occam's Razor and Megan's response support this view. [[Special:Contributions/108.162.219.223|108.162.219.223]]

Currently, this comic is listed as being in the "My Hobby" series, but it doesn't fit the series description. It's not phrased as if this is Randall's hobby, it's more situation-specific than the other My Hobby comics, and the title doesn't start with "My Hobby:". Should it be removed from the list? [[User:Sciepsilon|Sciepsilon]] ([[User talk:Sciepsilon|talk]]) 22:19, 5 October 2013 (UTC)
:The first two words from Cueball are: "My hobby...". The category is appropriate here. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 18:16, 6 October 2013 (UTC)
:Agreed. [[Special:Contributions/108.162.219.223|108.162.219.223]]
:Disagreed. It has nothing to do with the other "my hobby" comics, which all describes some weird trolling activity. This is just a guy making miniatures, a much more normal hobby. The ensuing panels of discussion doesn't fit the pattern either. [[Special:Contributions/108.162.254.119|108.162.254.119]] 20:21, 30 January 2014 (UTC)
:Also disagreed. The "my hobby" comics are about Randall's, and not Cueball's (albeit his alter-ego) hobbies. They all begin vey clearly with the phrase "My hobby:" in superscript before describing that hobby for comedic effect. Here, Cueball's hobby is not the subject and punchline of the comic, but rather the set-up for the joke about the size of his erm... member. It might meet the letter, but misses the spirit of the "my hobby" rubric. Any person searching for a comic in the "my hobby" series would be pretty surprised to find this one. [[Special:Contributions/108.162.219.21|108.162.219.21]] 08:47, 29 May 2014 (UTC)
::I agree with the disagreement, it's clearly not a My Hobby entry. But I still think it wouldn't hurt to have it in that category, for inclusiveness. Clearly, some subset of the proles think of it that way, so including it will help them, meanwhile harm nobody else. —[[User:Kazvorpal|Kazvorpal]] ([[User talk:Kazvorpal|talk]]) 14:56, 29 August 2017 (UTC)

Wow. I really misunderstood this joke. I thought he had asked a genie and just assumed it went wrong, when it actually went right. I thought Megan showing up was the result of the genie, and that her hobby was playing miniature pianos (perhaps using some finger extenders, like those things for Halloween that make your hands bigger and further out, but in reverse). And that she was intrigued by Cueball because she likes his hobby. Penis joke goes woosh. [[Special:Contributions/172.70.130.125|172.70.130.125]] 13:03, 24 September 2021 (UTC)

;The pianis<s>t</s> section
Because ''someone'' doesn't understand the joke, I'll explain it here: "Twelve-inch penis" sounds similar to "twelve-inch pianist", so the genie in the joke and the genie mentioned in the comic misheard it as the other. Try saying it out loud in English. [[User:MrGameZone|0100011101100001011011010110010101011010011011110110111001100101]] ([[User talk:MrGameZone|talk page]]) 04:34, 3 June 2014 (UTC)

:There is no mention of a "twelve-inch pianist" at this comic at all! And jokes I can find only misunderstandings on words like bucks/ducks and similar. The penis issue is always only raised at some comments. Furthermore the spelling "penis(t)" for "pianist" would be bad English — does this slang really exist? If so it has to be explained. Second: The link at the explain doesn't explain the penis issue. And finally citing the title text "Good thing he didn't make it smaller, or it'd need someone three inches tall to play it." would mean that a three inches tall Megan would have to "play" with a much smaller penis. Those penis jokes are still annoying, Randall just mentions a piano. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 20:10, 3 June 2014 (UTC)

::''Twelve. Inch. Piano.''

::The "bucks/ducks" jokes are ''directly'' based off of the "twelve-inch pianist" joke.

::It's a pun. "Pianist" sounds like "penis", and "penis" sounds like "pianist". Seriously, the only difference between the two is the "an".

::The link ''does'' address the "penis/pianist" issue. Read the last line carefully. It says that because of the genie's poor hearing, instead of the wish he wanted, he got a twelve-inch pianist. He wished for a twelve-inch penis and ended up with a twelve-inch pianist.

::And the "three-inch person playing with a three-inch penis" just came from Tryc horribly overthinking it. The title text says that if Cueball made a three-inch piano instead of a twelve-inch one, the genie would've misheard "three-inch pianist" as "three-inch penis", which is less preferable to a twelve-inch one.

::I'm trying my best to not be rude, but the joke is right there and you can't notice it. [[User:MrGameZone|0100011101100001011011010110010101011010011011110110111001100101]] ([[User talk:MrGameZone|talk page]]) 21:23, 3 June 2014 (UTC)
:::I still can't see that Randall does mention any "Twelve Inch" issues here. So, if that is the first imagination to some people it has to be EXPLAINED. The link here isn't helpful, Gooogle neither.
:::According to all my findings I would recommend a first section to explain the comic itself and then a second section how "penis-addicted" people would interpret this.
:::And remember the miniature trebuchet from [[1190: Time]]. Also a penis???
:::--[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 22:41, 3 June 2014 (UTC)

::::Ughhhhhhhh it's getting harder and harder to explain this to you
::::Could someone help me out, here? [[User:MrGameZone|0100011101100001011011010110010101011010011011110110111001100101]] ([[User talk:MrGameZone|talk page]]) 06:49, 4 June 2014 (UTC)

:::::I'm trying it simple: If this is a common joke somewhere in the US, maybe Midwest, or East, or wherever it has to be explained by that manner.
:::::The link to [http://www.netfunny.com/rhf/jokes/old90/304.html rec.humor.funny] isn't a helpful explain because there is NO penis at this entire page.
:::::I'm only calling for a better explain!
:::::--[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 20:19, 4 June 2014 (UTC)
::::::The cited joke is an obvious pun on penis, without which the joke is dead. The comic is an obvious reversal of the obvious pun. There is ample provided context. If you can't provide concrete evidence/sources to refute the concrete source cited in the explanation, don't keep marking it as incomplete on the grounds that you don't get it. '''[[User:Davidy22|{{Color|#707|David}}y²²]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 20:22, 4 June 2014 (UTC)
:::::::I was calling for a better explain. Done now by me and I still do not claim it's perfect. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 22:17, 4 June 2014 (UTC)
::::::::So my NON PERFECT edit is removed by admin David. But please understand that the "In the original..." statement implies that the page on "rec.humor.funny" is the original. There is still no explain to the origin of this original penis joke for non native English speakers. Even Goooogle isn't helpful. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 19:34, 5 June 2014 (UTC)
:::::::::The explanation already provides a source for the joke, an explanation and guides the punchline for the slow. Your version of the explanation introduced six grammatical errors and omits context for the joke that the comic is derived from. Googling "Pianist penis genie joke" returns a pagefull of relevant results, including two Q/A sites where people ask for it to be explained, a Reddit thread where the original joke is discussed in great detail and the xkcd forum page for the comic where people repeatedly refer to the cited joke as the basis of the comic. '''[[User:Davidy22|{{Color|#707|David}}y²²]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 20:48, 5 June 2014 (UTC)
::::::::::Throwing in the towel. I was trying to get a better explain for non native English speakers. I accept this knock out. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 21:45, 5 June 2014 (UTC)

I find it interesting that for at least two of the Penis related comics there has been a very long discussion with Dgbrt before he could accept (or accept his defeat here on these pages) that Randall (as he actually often does) makes these kind of juvenile penis jokes (or your mother etc.) The other one I have seen is [[450: The Sea]] [[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 22:50, 7 July 2014 (UTC)
:I always thought the joke was supposed to be that the asked for a miniature pianist, and Megan's response was sarcasm.--[[Special:Contributions/108.162.217.89|108.162.217.89]] 02:18, 26 March 2015 (UTC)

"I asked a genie for a bunch of peonies, but he showed me a pianist" --ColorfulGalaxy, who complained that he failed to post this comment

;MY HOBBY

It reads"[[:Category:My_Hobby|my hobby]] is ..." should it be included in the series? [[Special:Contributions/108.162.218.148|108.162.218.148]] 01:43, 28 August 2015 (UTC)
:There is some discussion on this point near the top of the discussion section. It seems to have been agreed that the comic doesn't fit the normal style of the typical 'My Hobby' comics, and therefore wasn't really appropriate to be in that category. --[[User:Pudder|Pudder]] ([[User talk:Pudder|talk]]) 07:49, 28 August 2015 (UTC)

Has anyone looked into what a miniature grand piano might actually sound like? I think that would be quite fascinating.
[[User:Heleatunda|Heleatunda]] ([[User talk:Heleatunda|talk]]) 22:24, 19 November 2021 (UTC)

:A grand piano for a six-foot person tuned to concert pitch has the note A4 at 440Hz; a grand piano for a twelve-inch pianist will have six times shorter strings and play a note six times higher, so 2640Hz, or 2 7/12 of an octave higher, and would be an E7 several notes higher than the maximum extent of a standard piano. A skilled micropianist should be able to transpose the notes back to their original note, if off by 2/3 octaves. Imagine all but the lowest notes of the piano being higher than the highest note of an actual piano. Otherwise, most things should sound relatively similar: before computer modelling was cheap, scale models were used to determine the acoustics of constructions before completing the real thing and discovering that it sounds terrible.

:The strings would be too short. But what if it's electric? [[User:Memo Spike Connector|2503: Memo Spike Connector]] ([[User talk:Memo Spike Connector|talk]]) 09:03, 12 April 2023 (UTC)

::I call that cheating. Just make it long enough to house the strings properly and get 2/3 credit. [[User:Certified_nqh|Me]][[[285: Wikipedian Protester|''citation needed'']]][[Category:Pages using the "citation needed" template]] 07:55, 8 June 2023 (UTC)

This is probably also related to the giant piano in Brobdingnag. [[User:Memo Spike Connector|2503: Memo Spike Connector]] ([[User talk:Memo Spike Connector|talk]]) 09:03, 12 April 2023 (UTC)