explain xkcd - User contributions [en]

Talk:2922: Pub Trivia

2024-04-24T06:31:56Z

Stevage: /* Smallest lake */ new section

I expect that the BTS question is a reference to the traditional Korean system of counting a person's age in units of Sal which started at 1 and incremented on the first day of the year. Since this system was abandoned on official documents in 2023, but is still in use in some contexts, the question of whether every member of BTS had a "birthday" on the first day of the year is ambiguous. [[User:Philhower|Philhower]] ([[User talk:Philhower|talk]]) 14:13, 19 April 2024 (UTC)
:This is marked as fiction https://www.youtube.com/watch?v=csSYfPaBaS4, but was it?

question 5, planets exist outside the solar system, adding to the ambiguity. [[User:Philhower|Philhower]] ([[User talk:Philhower|talk]]) 14:15, 19 April 2024 (UTC)
:One of the requirements in the definition of a planet is that it orbits the Sun, so no there are no planets outside the Solar system. [[User:Tharkon|Tharkon]] ([[User talk:Tharkon|talk]]) 17:50, 19 April 2024 (UTC)

::{{w|NASA}} disagrees. [https://exoplanetarchive.ipac.caltech.edu/ Exoplanet Archive] shows 5612 confirmed planets. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 20:55, 19 April 2024 (UTC)
::: The IAU is the body that defines such things - and they do say that planets have to orbit the Sun...things that orbit other stars are properly called "exo-planets". But still - do we include dwarf planets? Rogue planets? It's definitely a crazy-vague question. [[Special:Contributions/172.70.211.219|172.70.211.219]] 21:05, 19 April 2024 (UTC)
:::: the IAU is one body that claims the authority to define such things, but their authority is not recognized by any of the things they are claiming the right to name. (Except for a very small part of earth, mostly made of humans) [[Special:Contributions/172.69.58.203|172.69.58.203]] 00:10, 20 April 2024 (UTC)
::::That seems ridiculous, "If it isn't one of ours it don't count"? That'd be like saying "They're only 'cars' if they use North American roads, in other countries using THEIR roads you have to call them exo-cars!". LOL! And every future/space-based fiction calls them planets, just makes more sense not to be so arbitrarily exclusionary. Ours isn't the only sun, we shouldn't pretend it has some aspect that makes it count more than others - outside of that it's the one with us. [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 06:09, 20 April 2024 (UTC)
::::: Correction, the IAU definition explicitly states that it is only about planets within the solar system and has no comment about exoplanets one way or the other. Presumably, to leave some flexibility on all the weird edge cases that are bound to come up with exoplanets. https://www.iau.org/static/resolutions/Resolution_GA26-5-6.pdf [[Special:Contributions/172.68.195.213|172.68.195.213]] 07:55, 21 April 2024 (UTC)
::::Gas giants should be excluded too - they're not planets - just wannabe stars.[[Special:Contributions/172.70.163.31|172.70.163.31]] 08:34, 22 April 2024 (UTC)

: I think the correct answer is 0: before the solar system formed there were no planets. So, originally, there would have been none. If exo-planets count, going back to the beginning of time gives the same answer: when the universe came into existence during the big bang there were no stars, let alone planets orbiting them. Even religion agrees: in the beginning God created the earth and the heavens, but the sun came later, so technically earth was not a planet since it didn't orbit anything.--[[Special:Contributions/162.158.62.49|162.158.62.49]] 22:23, 19 April 2024 (UTC)

As for question 9, please see the note about the history of Austrailia's capitals at: [[https://en.wikipedia.org/wiki/List_of_former_national_capitals#Oceania]]. and the page regarding countries with multiple capitals [[https://en.wikipedia.org/wiki/List_of_countries_with_multiple_capitals]] [[User:Philhower|Philhower]] ([[User talk:Philhower|talk]]) 14:24, 19 April 2024 (UTC)
: See Also [https://en.wikipedia.org/wiki/List_of_Australian_capital_cities List of Australian capital cities] - As an Australian, I believe many would also consider the major city in their state/territory to be a capital city, although not the capital of Australia.

: The explanation misses the possibility that this is a Dad joke: where the capital city of Australia is 'Canberra,' as long as the respondent doesn't actually count either the letters in Canberra (1,2,3,4,5,6,7,8) or the population of Canberra (unknowable/ambiguous). [[User:Bilkie|Bilkie]] ([[User talk:Bilkie|talk]]) 14:12, 22 April 2024 (UTC)

About the alt text, London is certainly in Europe. The question itself is malformed because "Europe (or 'the EU')" is not self-consistent: there is a lot of European countries that are not part of the EU. [[User:RedGolpe|RedGolpe]] ([[User talk:RedGolpe|talk]]) 14:32, 19 April 2024 (UTC)
:The "Greater London" answer is also tricksy, as the "ceremonial county" of GL {{w|London boroughs|may not include}} the additional area of the City Of London (though it does include the City Of Westminster, which is sometimes the trick answer to certain trick questions that a quizmaster might attempt to pull). The ''administrative'' Greater London is the ceremonial one ''plus'' CoL, however... [[Special:Contributions/172.70.162.19|172.70.162.19]] 15:04, 19 April 2024 (UTC)
::I would argue London is not in Europe because there is no clear definition for Europe as a geographic area, it really doesn't have an eastern border that is not arbitrary, so the only clearly defined thing Europe can refer to is the EU. [[User:Tharkon|Tharkon]] ([[User talk:Tharkon|talk]]) 17:50, 19 April 2024 (UTC)
:::London, France is both in Europe and the EU https://en.wikipedia.org/wiki/London,_France [[Special:Contributions/172.70.163.49|172.70.163.49]] 18:00, 19 April 2024 (UTC)
:::While the eastern border of Europe is not clearly defined I am not aware that there is any definition of (geographic) Europe that excludes the islands (and subsequently London) --[[Special:Contributions/162.158.202.135|162.158.202.135]] 21:24, 19 April 2024 (UTC)
::::There's "mainland Europe", excluding islands. Or at least any of several possibly island archipeligos and/or island nationstates. e.g. Mont-Saint-Michel might not be (exluded, that is, due to being French and having a (tide-dependant) ground access), Jersey would be (British Crown Territory island), Malta probably (island state), Sicily would depend on your thinking (it being Italian, and much larger than the strait that makes it an island offshoot). Most of Scandinavia might be interestingly included (with Denmark) or excluded (with Iceland), according to context. Even Gibraltar might or might not be, depending upon upon the thinking (or lack of it) behind the use of the term. (But, fiddling around the edges aside, (the English) London is not in "mainland Europe" and hasn't been for maybe a full 10kY before it became "London" in any useful sense.) [[Special:Contributions/172.70.163.49|172.70.163.49]] 23:44, 19 April 2024 (UTC)
::::: The phrase "continental Europe" is also used, and might be implied by a British person saying "I travelled around Europe last year". [[Special:Contributions/172.69.195.54|172.69.195.54]] 15:01, 21 April 2024 (UTC)
::::: The (semi-)apocryphal headline "Fog In Channel, Continent Cut Off" is perhaps indicative of the {{w|Continental Europe#Great Britain and Ireland}} British collective mindset (of which I must therefore be a component, albeit not at that end of the spectrum). [[Special:Contributions/172.71.242.71|172.71.242.71]] 15:39, 21 April 2024 (UTC)
:::I'd say The European Council has at least as good (or bad, depending which way you look at it) a claim to be 'Europe' as the EU does, and London (through the UK) is in that (for now, anyway).[[Special:Contributions/172.71.242.55|172.71.242.55]] 09:07, 22 April 2024 (UTC)

The [https://en.wikipedia.org/wiki/Benxi Benxi Lake] is actually considered to be the smallest lake in the world. [[Special:Contributions/172.70.135.205|172.70.135.205]]
:{{cn}}[[Special:Contributions/172.70.86.176|172.70.86.176]] 14:40, 19 April 2024 (UTC)
:Many websites says Benxi lake is recognized by Guinness records, but guinnessworldrecords.com does not have such a record. Either they recognized smallest lakes previously but not anymore, or they never had such a record and we are witnessing citogenesis ([https://xkcd.com/978/]) [[Special:Contributions/172.71.154.210|172.71.154.210]] 17:33, 22 April 2024 (UTC)

I never realized how challenging it is to edit pages when they've just been posted. Makes me long for something like Google docs.[[Special:Contributions/172.68.3.43|172.68.3.43]] 14:39, 19 April 2024 (UTC)

People, who are born on 29th February don't have a birthday in years which are not leap years. However, 2024, when this comic was published is a leap year. --[[Special:Contributions/162.158.95.9|162.158.95.9]] 14:40, 19 April 2024 (UTC)

"5. How many planets were there originally?" This could also refer even back to the start of the universe, when there were (likely) just 0 planets. --[[Special:Contributions/162.158.86.101|162.158.86.101]] 14:43, 19 April 2024 (UTC)

I anticiated a lot of Edit Conflicts, but not actually quite so many as to not to be able to resolve my edits with everyone else's. This is the bare-bones that I was putting in (until finding multiple attempts tried to be added consecutively...
{{cot}}
{| class="wikitable"
|-
! Question !! Problem !! Possible answer(s)
|-
| Which member of BTS has a birthday this year?
| Every living person has a birthday this year (being a leap-year, this includes those born on 29/Feb).
|
|-
| How many sides does a platonic solid have?
| There are five (or [[2781: The Six Platonic Solids|six]]) platonic solids, each with a different number of sides.
| 4, 6, 8, 12 or 20
|-
| What is the smallest lake in the world?
| The distinction between a small lake and a pond, pool or puddle (for example) is difficult to define.
|
|-
| Which Steven Spielberg movie features more shark attacks? Jaws (1875) or Lincoln (2012)
| Not a problem, as Lincoln has very few shark attacks.{{Citation needed}} The problem is that barely anyone will ''not'' be able to correctly answer this.
|
|-
| How many planets were there originally?
| Contextually vague. At what time and within what volume of space, and what is the scope of 'planet' defined here?
|
|-
| What NFL player has scored the most points outside of a game?
| Outside of (NFL) games, individuals may accumulate points in any number of ways (e.g. Scrabble)
|
|-
| The Wright brothers built the first airplane. Who built the last one?
| Until no further planes are built, individuals/teams/companies continue to build (to completion) ever more examples, changing the answer possibly moment to moment.
|
|-
| Is every even number greater than 2 the sum of two primes?
| This is a {{w|Goldbach's conjecture|currently unanswered question}}.
|
|-
| Not counting Canberra, what city is the capital of Australia?
| Canberra is ''the'' capital of Australia, a fairly well known 'obscure' fact. Each Australian territory also has their own state capital, so there is not one other ''single'' example.
|
|-
| Who played the drums?
| Lack of context. With which group? For which song? For which (re-)recording? At which event?
|
|-
| Where is London located? (a) The British Isles (b) Great Britain and Northern Ireland (c) The UK (d) Europe (or 'the EU') (e) Greater London
| Almost all of these are correct (though London is geographically in Europe but no longer in the EU).
|}

This is apparently deliberate (at least on behalf of the organisers), perhaps to upset or otherwise impede groups of overconfident quizzers who would otherwise dominate any genuinely good quiz.
{{cob}}
...make use of it however you wish, anybody who has the time not to keep chasing all the simultaneous edits. (The above is a bit behind 'perfection', and lacks many of the integrations, wikilinks and adjustments I had made. I backspaced out of the edit I had finally reached, before remembering to take a full copy into my paste-buffer!) [[Special:Contributions/172.70.90.115|172.70.90.115]] 14:53, 19 April 2024 (UTC)

I thought the answer to #2 could be 1, because as 3D solids they only have one surface. I would guess the player with the most points outside of a game is the one who's played idlers (like Cookie Clicker) the longest — though I suppose those could be considered "inside of a game" as well. Also, I played the drums. [[Special:Contributions/172.70.254.143|172.70.254.143]] 15:33, 19 April 2024 (UTC)
:The answer to #2 is '2 - the in-side and the out-side'.[[Special:Contributions/172.69.43.242|172.69.43.242]] 15:46, 19 April 2024 (UTC)

Considering the platonic solids explanation lists all the correct answers, could someone include a list of all the members of BTS and their respective birthdays? Bing copilot suggests the following:

1. **Jin (Kim Seok-jin)**:
: - Birthday: **December 4, 1992**

2. **Suga (Min Yoon-gi)**:
: - Birthday: **March 9, 1993**

3. **J-Hope (Jung Hoseok)**:
: - Birthday: **February 18, 1994**

4. **RM (Kim Nam-joon)**:
: - Birthday: **September 12, 1994**

5. **Jimin (Park Ji-min)**:
: - Birthday: **October 13, 1995**

6. **V (Kim Tae-Hyung)**:
: - V's birthday is **December 30**, but the year is not mentioned in the provided information.

7. **Jungkook (Jeon Jungkook)**:
: - Jungkook's birthday is **September 1**, but the year is not mentioned in the provided information.
[[Special:Contributions/172.70.162.19|172.70.162.19]] 15:48, 19 April 2024 (UTC)

: I'm not opposed to adding BTS birthdays, but I think it should be done by someone more knowledgeable about the band than me. Birthdays can be a surprisingly nuanced subject.[[User:Comatoran|Comatoran]] ([[User talk:Comatoran|talk]]) 15:59, 19 April 2024 (UTC)
:Wikipedia says {{w|V_(singer)|'95}} and {{w|Jungkook|'97}} respectively[[Special:Contributions/172.70.162.37|172.70.162.37]] 16:04, 19 April 2024 (UTC)

London is both a City (London) and a City within a City (The City of London) and an Area (Greater London)
There are also many more places named London than the one that is the Capital of the UK .. Serbia, France, Canada (Which is larger and the one in the UK), 10 in the USA, and one on Kiribati 17:56, 19 April 2024 (UTC)
:Are you saying London, Ontario, Canada is BIGGER than the more famous London, England??? That's a country capital! Is that seriously true? I'm Canadian, I don't know London, ON as being THAT big... [[User:NiceGuy1|NiceGuy1]] ([[7User talk:NiceGuy1|talk]]) 05:52, 20 April 2024 (UTC)
::It's very unlikely to be larger in population terms than the (common!) wider definition of the main UK London, as that would make it larger than any other city in Canada by a large margin. In terms of area, London ON is very likely to be larger than the City of London (which is surprisingly small). More widely, the definition of what actually is a "city" is more complex than it appears to be at first glance; administrative areas (what official statistics are collected for) are often quite different from where the bulk of people are. --[[Special:Contributions/162.158.74.25|162.158.74.25]] 07:20, 20 April 2024 (UTC)
:::Some wikipedia figures, for reference:
:::*{{w|London, Ontario}} = 168.76 sq mi, Population 422,324
:::*{{w|City of London}}, subset of Capital of UK = 1.12 sq mi, Population 8,618
:::*{{w|London}}, administrative/etc capital of UK = 606.96 sq mi, Population 8,799,800
:::*{{w|London, Belgrade}} = a 'neighbourhood' (<1 sq mi?), Population unknown
:::*{{w|London, France}} = 'a small agricultural village'
:::*...
:::*{{w|List of minor planets: 8001–9000#837|8837 London}} = 1.5 mi diameter (~28s q mi, ~14 cu mi?), Population... some of the {{w|Clangers}}?
:::I skipped a few of the others (e.g. the various US ones: cities, townships, communities)... [[Special:Contributions/162.158.230.46|162.158.230.46]] 18:10, 20 April 2024 (UTC)

I'm surprised there were no phishing-type questions (i.e. "what are the last four digits of your social security number", "what are the three numbers on the back of your debit card", etc).22:33, 19 April 2024 (UTC)

The only correct answer(s) to "who played the drums" would be "the drummer", or "twelve drummers", but I would accept Phil Collins, Alex Van Halen, or Ringo Starr for half a point each [[Special:Contributions/108.162.241.100|108.162.241.100]] 02:40, 20 April 2024 (UTC)
: "Who played the drums" is Keith Moon; in this cryptic clue, "Who" is the name of the band, and "played the drums" indicates the drummer; hence the answer is Keith Moon, the drummer of The Who. [[User:Sabik|Sabik]] ([[User talk:Sabik|talk]]) 04:29, 22 April 2024 (UTC)
:Clearly the correct answer is 'Animal'.[[Special:Contributions/172.71.178.176|172.71.178.176]] 08:45, 22 April 2024 (UTC)

I asked my Mom these questions & she said the answer to #7 so flatly: ''Boeing ''
[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 02:44, 20 April 2024 (UTC)

On the Capital of Australia: Melbourne hosted parliament before Canberra was built, and Jervis Bay was part of the ACT: https://en.wikipedia.org/wiki/Jervis_Bay_Territory

Are there people outside of the USA that are surprised to learn that Washington D.C. is the capital of the USA, rather than New York, Los Angeles, Chicago etc. due to its relatively small population? ("only" ~670000 in 2024) [[User:These Are Not The Comments You Are Looking For|These Are Not The Comments You Are Looking For]] ([[User talk:These Are Not The Comments You Are Looking For|talk]]) 06:50, 21 April 2024 (UTC)

I came here all prepared to say that the Title Text should have Ontario, Canada as a (likewise correct) answer, but I see somebody already put that into the table, LOL! I feel like the "More Reasonable" version of the planet question should NOT mention Pluto, it should be the question IMPLIED in the comic whose answer is 9 (such as "How many planets were originally in our Solar System", but without the ambiguity of "originally". Basically a question whose answer is 9, pushing people to include Pluto, while allowing people the mistake of saying the current answer of 8, but mentioning Pluto would ruin that/the question). [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 05:52, 20 April 2024 (UTC)

There could also be a person Named "London" who is located somewhere, perhaps in the same bar (or not) -- [[Special:Contributions/172.70.46.71|172.70.46.71]] 12:13, 20 April 2024 (UTC)
:https://en.wikipedia.org/wiki/London_%28name%29 [[Special:Contributions/172.70.42.31|172.70.42.31]] 16:27, 20 April 2024 (UTC)

I thought I knew the minimum size of a lake by definition, at least in the US, but I just found different authorities asserting 1, 10, and 20 acres as the distinction between a lake and a pond. Two non-metric distinctions are that a lake has an aphotic (dark) zone, or a lake is fed and drained by a river, but they don't help here. [[Special:Contributions/172.70.43.53|172.70.43.53]] 16:22, 20 April 2024 (UTC)

For the love of god can we stop saying that Pluto was "demoted" to a dwarf planet? It didn't have its category changed, it had its category defined (for the first time!). It was a founding member of a newly named category. And it's not like planets are better than dwarf planets, they're just different. (I'm going to die on this hill, ain't I?)
[[Special:Contributions/172.68.34.16|172.68.34.16]] 01:35, 21 April 2024 (UTC)
:Yes, you probably are. When it happened, many people, including astronomers, considered it a downgrade. There's some prestige in being a planet -- the Sun and the planets are considered the most significant objects in the Solar System. The qualifier suggests that it's less important than the "real" planets, and was kicked out of the planet club for being deficient in some way. Maybe we need a campaign from dwarf humans to remind everyone that they're just smaller, but they have no less dignity. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 23:41, 21 April 2024 (UTC)
:I'll cheerfully die there with you. But I'll also point out while I'm doing so that if it's a 'dwarf ''planet''', then clearly it is still a planet. I mean, people would look at you funny if you tried to claim that a dwarf elephant wasn't an elephant. And perhaps more pertinently, a dwarf star is still a star. So the answer to 'how many planets are in our solar system?' is 'at least 16 that we know of - depends how far down you count. Unless you discount the gas giants, in which case you need to subtract four. Or maybe two. Wait - how many are we on now again?'[[Special:Contributions/172.71.178.157|172.71.178.157]] 11:14, 22 April 2024 (UTC)

For the planet question there's also Theia, which is theorized to have been a planet prior to smashing into proto Earth and forming the moon and modern larger Earth. So there used to be at least nine planets by the current definition in our solar system.
[[Special:Contributions/162.158.155.20|162.158.155.20]] 03:50, 21 April 2024 (UTC)

For question #8, it's not that mathematicians were idling around. A lot of partial results were made, see Wiki. [[Special:Contributions/172.71.160.33|172.71.160.33]] 08:22, 21 April 2024 (UTC)

I was confused by this question at first. The answer is "no." It is disproved by example. 21+3=24 21 is not a prime. 24 is even. {{unsigned ip|162.158.154.65|19:38, 21 April 2024}}
:24 is the sum of many pairs of numbers. Amongst those pairs (as with any even number >2) may be one ore more pairs of primes (even 2, if you count 1 as a prime - though generally one doesn't). 24 is (just looking at the odd numbers >1) 21+3, 19+5 (both primes!), 17+7 (both primes), 15+9 (no), 13+11 (both primes) and then of course the reverses of these (if you count those). So 24 is the sum of two primes (three, or six, times). 4 is just the sum of 2+2, 6 is only 3+3, 8 is only 5+3... And every even number checked from there on up ''can'' be expressed as the sum of two primes (at least once). But is there ever a point at which there is an even number that is not?
:With 3, 5 and 7 being primes, then you can definitely say that if N is an even number that has (or even relies upon) a solution with 3, then N+2 and N+4 are, which would be answerable by the same sum but with 5 or 7 instead. Plus N+8 (3->11), N+10 (3>13). And maybe you can fill in the N+6 and N+8 by the ''other'' prime used being also a suitable twin prime that you can swap out for the P±2 partner. But only if it's the right prime of any given pair, and not all primes are twins, so there's a lot more to consider about whether any given advancement up the even-numnber ladder can be answered by a suitable pair of primes.
: e.g. 15440=7717+7723 (one possible solution). 15442 therefore needs +2 to that. But 7717 and 7723 ar adjacent primes that areen't two apart (so you can't just add two to 7717 and have 7723 + 7723) and the next adjacent primes are 7703 and 7727 (not two apart, and not obviously useful to go 7717->7703, either). So there must be another solution (theoretically, but also proven by having been checked). By doing ''quite a bit'' of to-and-fro (if that's how we're doing it), we can finally announce that 15442=7649+7793 (but I also found 7523+7919, 7541+7901, 7559+7883 and 7589+7853, before I stopped the search). So It works up to 15442.
:15444? Well, neither 7649 or 7793 have a +2 prime-partner. But 7589 is followed by 7591 (as a new partner to 7853). And 7559 is followed by 7561, so 7561+7883 would also be an answer. There will (probably) be many others.
:But will there ''always'' be many others? Or even just the one? I'm sure someone has been counting how many unique (bidirectional) solutions each number has, and probably there are some that ''only just'' get the requisite single pair of primes that sum to it. Could it ever not even manage that? Those actually familiar with the efforts to prove the conjecture would know, rather than a fool like me coming fresh to the problem. (Relatively, that is... I already knew about it, but I've never tried to wade into the actual theory until right now, and this random example I set up to 'explain' this, just now.) [[Special:Contributions/172.71.242.175|172.71.242.175]] 21:01, 21 April 2024 (UTC)
:: It looks like it was a mistake on my part to infer that the question meant "exclusively the sum of two primes." Allen [[Special:Contributions/162.158.62.237|162.158.62.237]] 15:12, 22 April 2024 (UTC)
::: Ah, I see. Well, ''no'' number is "''just'' the sum of two primes" (4=3+1, and 1 isn't prime; or 4+0, and neither of those are; all before considering negative, fractional or even complex/quaternian 'summations' (e.g. (2+3i)+(2-3i)=4), which primes definitely are not part of, regardless of how they together become '4'...), so "Is every even number greater than 2 the sum of two primes?" sort of has to imply only that there "are two primes which sum", rather than ever "the only numbers which sum will all be primes". Hyper-pedanticity (or deliberate linguistic trickery) aside, that's really not in question.
::: But nice to understand where you were coming from, at least. [[Special:Contributions/172.70.163.49|172.70.163.49]] 20:15, 22 April 2024 (UTC)
*About Q2: the "number of sides" may be "the average number of sides" of a Platonic solid, which is 10, despite having no Platonic decahedron
*About Q10: with a correct list of answers, it ''may'' be kept as-is with having to select the drummer(s).
[[Special:Contributions/162.158.78.38|162.158.78.38]] 10:47, 22 April 2024 (UTC)
:That assumes that the Platonic solids occur in equal numbers in the universe. In actuality, there are probably more of some than others, which would throw your average off. Alternatively, you could argue that none of any of them actually exist (by virtue of them being Platonic, and any example being an imperfect approximation), in which case the answer is either 'none' or 'unanswerable', since you can't average nothing.[[Special:Contributions/172.70.85.156|172.70.85.156]] 12:39, 22 April 2024 (UTC)

The smallest lake in the world is Snowf Lake. {{unsigned ip|172.70.34.58|02:22, 23 April 2024}}

The title text reminds me of some old viral social media post where an alleged smart-a** teacher made a test question that was like "What is the opposite of 'old'? (a) new (b) young". (I don't remember if it was specifically mentioned, but the implication was that the question would then be graded completely arbitrarily.) [[User:Zowayix|Zowayix]] ([[User talk:Zowayix|talk]]) 21:01, 23 April 2024 (UTC)

== Smallest lake ==

IMHO there is a reasonable interpretation of the smallest lake question: what is the smallest officially named naturally occurring body of freshwater. [[User:Stevage|Stevage]] ([[User talk:Stevage|talk]]) 06:31, 24 April 2024 (UTC)

2740: Square Packing

2023-02-22T01:09:17Z

Stevage: /* Explanation */

{{comic
| number = 2740
| date = February 20, 2023
| title = Square Packing
| image = square_packing_2x.png
| imagesize = 326x295px
| noexpand = true
| titletext = I also managed to improve the solution for n=1 to s<0.97, and with some upgrades I think I can hit 0.96.
}}

==Explanation==
{{incomplete|Created by a HYDRAULIC PRESSED SQUARE - This appears to be referring to a specific puzzle that merits explanation before going into description of the comic. Do NOT delete this tag too soon.}}
The {{w|Square packing in a square|square packing problem}} is a type of geometry problem. The goal is to find the smallest possible "outer square" that will fit N "inner squares" that are each 1 unit wide and 1 unit tall. In the comic N=11, leading to its name of "The N=11 Square Packing Problem," and s is the length of the outer square's sides.

A few days before this comic's post, a web page [https://erich-friedman.github.io/packing/squinsqu/ ''Squares in squares''] gained interest on social media platforms such as [https://twitter.com/KangarooPhysics/status/1625436240412540928 Twitter] and [https://news.ycombinator.com/item?id=34809023 Hacker News]. For many values of N, that page depicts the best known solutions, some of them known to be optimum. The one for N=11 (best known but not proven to be optimum) is shown on the left here; its general arrangement was found by Walter Trump in 1979 and slightly improved by Gensane et al. in 2004.<ref>Gensane, T., Ryckelynck, P. – ''Improved dense packings of congruent squares in a square''. Discrete Comput Geom 34, pages 97–109 (2005). https://doi.org/10.1007/s00454-004-1129-z</ref>

Munroe claims to have found a more efficient solution for this N=11 case, by physically deforming the squares involved in the best-known solution with a {{w|hydraulic press}}. The size of the resulting bounding square is indeed smaller, but the "solution" isn't actually one because the inner shapes have countless wrinkles and are no longer squares. Geometrical shapes in packing problems are not conventionally assumed to be deformable in this manner.{{citation needed}}

The title text mentions the same approach "improved" the solution for 1 unit square, whose optimum solution is obviously that unit square itself with s=1. Munroe remarks that if he had "some upgrades", presumably a more powerful hydraulic press, he could get the resulting square to be even smaller.

The humorous implication behind the comic and the title text is that rather than being the shapes being mathematical, abstract shapes, they are actually physical squares, constructed of some extremely strong, but not completely incompressible material. It is not obvious what material that might be: even using a hydraulic press, its volume can only be reduced to 0.97 or 0.96 times its starting volume. (The fact that the squares exist in a 2D universe in the problem statement, but are being crushed presumably by a 3D hydraulic press is not addressed, either).

This is perhaps a related joke to [[2706: Bendy]], but now with squares and compressed areas instead of triangles and extended lengths.

‎<references />

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[11 squares optimally packed inside a square arrangement]
:Previous best
:s<3.877084
:(Gensane, 2004)

:[11 deformed squares crushed together to pack them into a smaller square arrangement]
:New record
:s<3.40

:[Caption below the panel:]
:I've significantly improved on the solution to the n=11 square packing problem by using a hydraulic press.

{{comic discussion}}
[[Category:Math]]
[[Category:Geometry]]

2646: Minkowski Space

2022-07-18T03:18:50Z

Stevage: /* Title text */

{{comic
| number = 2646
| date = July 15, 2022
| title = Minkowski Space
| image = minkowski_space.png
| titletext = My liege, we were able to follow the ship into Minkowski space, but now they've jumped to Hilbert space and they could honestly be anywhere.
}}

==Explanation==
{{incomplete|Created by A RELATIVISTIC QUANTUM STATE - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

In science fiction, {{w|faster than light travel}}, an impossibility in our universe, is often portrayed by having spaceships enter (or "jump") into some different realm, termed "hyperspace" or similar {{w|technobabble}}, where superluminal travel can occur prior returning to the ordinary universe. In this comic, a spaceship is being chased by an enemy ship. The crew attempt to escape by jumping into {{w|Minkowski space}} which is actually just conventional 3-D space together with time combined into a mathematical object called a {{w|manifold}} used in {{w|special relativity}}. Because Minkowski space is merely a representation of real physical {{w|spacetime}}, "jumping" into it is meaningless and offers no benefit for escaping pursuit, providing the humor of the comic's absurdist joke.

The visual depiction of the spaceships skewed diagonally is based on the graphical {{w|Minkowski diagram}} representation of objects in Minkowski space, where the {{w|world line}} of matter is bounded inside its diagonal {{w|light cone}}.

The mention of distance depending on the observer's frame of reference refers to distances changing when measured in different {{w|inertial frame of reference|inertial frames of reference}}, a concept called the {{w|relativity of simultaneity}}. Here are [https://www.youtube.com/watch?v=asW78vToNLQ some videos] intended [https://www.youtube.com/watch?v=Xrqj88zQZJg to explain] that concept. The skewing depicted changes the distance between the spaceships in such a way that the tip of the pursuer comes closer to the pursued spaceship, but their centers move further apart. So the question of whether they have come closer is indeterminate for the reader of the comic.

=== Title text===

The title text is a status report from someone in the pursuing spaceship to their leader (whom they call "my {{w|Homage (feudal)|liege}}."): following the spaceship to Minkowski space was not a problem, implying (as with fictional hyperspace examples) that they also chose to shift themselves into this other form of perspective. But the pursued ship subsequently jumped to Hilbert space and could now be anywhere.

A Hilbert space is an inner product space that is complete with respect to the norm defined by the inner product. 

It turned out that hiding in {{w|Hilbert space}} is much easier. This is because of the potential of Hilbert spaces to have an infinite number of dimensions, and thus are clearly much more complicated than four-dimensional Minkowski space. However, Hilbert space is a mathematical construct used to describe objects such as functions of various parameters and complexity, not physical spatiotemporal reality, so it would be very unusual for a physical object to be represented in Hilbert space. Quantum states can be represented as vectors in Hilbert spaces, so it might relate to the {{w|uncertainty principle}} concerning how the escaped spaceship could be anywhere.

As in the [[2577:_Sea_Chase|Sea Chase]] comic, there was also more than one type of space to jump to here.

==Transcript==
:[A spaceship is being pursued by another spaceship. Both ships have a black part in the front representing a window. They are the same size but different designs. The pursued spaceship to the right has two engines below and a big engine behind. The pursuing spaceship to the left has a V-shaped rear end, and what seems like two weapons on either side pointing forward. At least two persons inside the pursued spaceship are talking to each other, and their text comes out from two starburst on top and bottom of the spaceship.]
:Voice 1: The enemy ship is right behind us!
:Voice 2: Prepare to jump to Minkowski space on my mark.

:[Same setting, with star burst above only. The sound coming from the pursued spaceship is written inside a burst of small lines below the spaceship. Voice 2, by context, is the same as in panel 1.]
:Voice 2: Three... two... one... ''mark!''
:Click

:[Both spaceship are tilted upwards and becomes distorted so they become longer and thinner.]

:[The tilting increases and the distortion is now so pronounced that the spaceships are almost unrecognizable, almost just lines with structure. The distance between the tip of the pursuing spaceship and the pursued becomes shorter in the last two panels, but the distance between their center parts becomes larger. Up to three distinct voices are shown, here, which may include those seen in Panel 1 but with no clear relation.]
:Voice 3: Are they still getting closer?
:Voice 4: I can't tell.
:Voice 5: I think it depends on your frame of reference.

{{comic discussion}}

[[Category:Space]]
[[Category:Math]]
[[Category:Physics]]

Stevage: /* Explanation */

2020-07-07T23:32:13Z

Stevage: /* Explanation */

{{comic
| number = 2329
| date = July 6, 2020
| title = Universal Rating Scale
| image = universal_rating_scale.png
| titletext = There are plenty of finer gradations. I got 'critically endangered/extinct in the wild' on my exam, although the curve bumped it all the way up to 'venti.'
}}

==Explanation==
{{incomplete|Created by an OFFENDED NUMBER NINE. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}
In this comic, [[Randall]] has blended many traditional rating scales to create a "universal rating scale". Unfortunately, the mixing of these scales creates a scale that is impossible to use. Only a subset of the values of each rating scale is included, further weakening its claim as a "universal" scale.

Alternatively, it can be perceived as a way of comparing the different scales, for instance to answer a question like "Is it worse to get a 2 or an F?"

: '''Scale of zero to ten''' (but with an 11, because people often add that to exaggerate - see {{w|up to eleven}} about the meme)
:: 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11. The number 9 is omitted, possibly because seven ate nine (789).
: '''Competitive scores''', such as in the {{w|Olympics}} (ordinarily from 0.0 to 10.0, perfect)
:: 10.0
: '''{{w|Likert scale}}'''
:: strongly disagree, disagree, agree, strongly agree (often there is a "neither agree nor disagree" value in the middle, but it is not strictly required)
: '''{{w|School grades}}''' (there are also B, C, D, and others with + or -)
:: F, A+
:: S - Schools in Japan may use the {{w|Academic grading in Japan|S grading}}, from the Japanese shū (秀), meaning excellent. Many video games also use S grading, and some (such as Beat Saber and Dance Dance Revolution) use SS, SSS, and even more S's as ranks above that (though these are not shown in the webcomic.)
: '''{{w|Star (classification)|Star rating}}'''
:: 1 star, 2 stars, 3 stars, 4 stars, frequently used to rate restaurants, films etc.
: '''{{w|Conservation status}}''' (this is only a subset of the nine groups in the {{w|International Union for Conservation of Nature}} (IUCN) Red List of Threatened Species)
:: extinct, critical, endangered, least concern
: '''{{w|Starbucks#Products|Starbucks brand beverage sizes}}''' (there is also short and trenta)
:: tall, grande, venti
: '''MPAA age-appropriate {{w|Motion Picture Association film rating system|film ratings}}''' took effect November 1, 1968 with G, M (now PG), R (not shown in comic) and X (now NC-17)
:: G, PG (as of February 11, 1972, replaced GP), {{w|PG-13}} (introduced July 1, 1984), {{w|NC-17}} (introduced September 1990, replaced X)
: '''ESRB age-appropriate {{w|Entertainment_Software_Rating_Board#Ratings|ratings}}''' for video games (there is also EC for early childhood, E for everyone, E10+ for Everyone 10+, M for Mature, and AO for Adults Only)
:: T for teen
: '''Happiness emojis''' (alternately, the '''{{w|Wong–Baker Faces Pain Rating Scale}}''')
:: Frowny face (☹, U+2639), neutral face (😐, U+1F610), smiley face (☺, U+263A)
: '''{{w|Coin grading|Coin grades}}'''
:: G, VG, UNC for good, very good, uncirculated
: '''Hurricane/cyclone strengths''', {{w|Saffir–Simpson scale}} (ordinarily categorized from category 1 to category 5)
:: Category 5
: '''Tornado intensities''', {{w|enhanced Fujita scale}} (ordinarily categorized from 0 to 5)
:: EF-5
: '''Credit (and other) ratings'''
:: A, AA, AAA
:: Credit rating agencies will rank businesses and governments based on their likely ability to pay back their creditors' interest ratings. The very highest are rated AAA, and then (in Standard & Poor's scheme) AA+, AA, AA-, A+, and so on. (Note that Randall's scale rates A+ as better than AA, indicating that it's the "A+" from school grades rather than the one from Standard & Poor's list.)

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

: [Caption above the frame:]
: Universal Rating Scale
:
: [A vertical scale, with 45 gradations, labeled]
: 0
: 1
: Strongly Disagree
: F
: [star] ☆
: Extinct
: Tall
: 2
: G
: Critical
: [frowny face] ☹
: 3
: endangered
: [two stars] ☆☆
: PG
: Disagree
: VG
: 4
: Grande
: 5
: PG-13
: [neutral face] 😐
: 6
: T for Teen
: 7
: [three stars] ☆☆☆
: Agree
: Venti
: 8
: Least Concern
: [smiley face] ☺
: A
: Strongly Agree
: Category 5
: EF-5
: NC-17
: UNC
: AA
: [four stars] ☆☆☆☆
: A+
: S
: AAA
: 10
: 10.0
: 11

{{comic discussion}}
[[Category:Charts]]

2329: Universal Rating Scale

2020-07-07T23:30:04Z

Stevage: /* Explanation */

{{comic
| number = 2329
| date = July 6, 2020
| title = Universal Rating Scale
| image = universal_rating_scale.png
| titletext = There are plenty of finer gradations. I got 'critically endangered/extinct in the wild' on my exam, although the curve bumped it all the way up to 'venti.'
}}

==Explanation==
{{incomplete|Created by an OFFENDED NUMBER NINE. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}
In this comic, [[Randall]] has blended many traditional rating scales to create a "universal rating scale". Unfortunately, the mixing of these scales creates a scale that is impossible to use. Alternatively, it can be perceived as a way of comparing the different scales, for instance to answer a question like "Is it worse to get a 2 or an F?"

: '''Scale of zero to ten''' (but with an 11, because people often add that to exaggerate - see {{w|up to eleven}} about the meme)
:: 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11. The number 9 is omitted, possibly because seven ate nine (789).
: '''Competitive scores''', such as in the {{w|Olympics}} (ordinarily from 0.0 to 10.0, perfect)
:: 10.0
: '''{{w|Likert scale}}'''
:: strongly disagree, disagree, agree, strongly agree (often there is a "neither agree nor disagree" value in the middle, but it is not strictly required)
: '''{{w|School grades}}''' (there are also B, C, D, and others with + or -)
:: F, A+
:: S - Schools in Japan may use the {{w|Academic grading in Japan|S grading}}, from the Japanese shū (秀), meaning excellent. Many video games also use S grading, and some (such as Beat Saber and Dance Dance Revolution) use SS, SSS, and even more S's as ranks above that (though these are not shown in the webcomic.)
: '''{{w|Star (classification)|Star rating}}'''
:: 1 star, 2 stars, 3 stars, 4 stars, frequently used to rate restaurants, films etc.
: '''{{w|Conservation status}}''' (this is only a subset of the nine groups in the {{w|International Union for Conservation of Nature}} (IUCN) Red List of Threatened Species)
:: extinct, critical, endangered, least concern
: '''{{w|Starbucks#Products|Starbucks brand beverage sizes}}''' (there is also short and trenta)
:: tall, grande, venti
: '''MPAA age-appropriate {{w|Motion Picture Association film rating system|film ratings}}''' took effect November 1, 1968 with G, M (now PG), R (not shown in comic) and X (now NC-17)
:: G, PG (as of February 11, 1972, replaced GP), {{w|PG-13}} (introduced July 1, 1984), {{w|NC-17}} (introduced September 1990, replaced X)
: '''ESRB age-appropriate {{w|Entertainment_Software_Rating_Board#Ratings|ratings}}''' for video games (there is also EC for early childhood, E for everyone, E10+ for Everyone 10+, M for Mature, and AO for Adults Only)
:: T for teen
: '''Happiness emojis''' (alternately, the '''{{w|Wong–Baker Faces Pain Rating Scale}}''')
:: Frowny face (☹, U+2639), neutral face (😐, U+1F610), smiley face (☺, U+263A)
: '''{{w|Coin grading|Coin grades}}'''
:: G, VG, UNC for good, very good, uncirculated
: '''Hurricane/cyclone strengths''', {{w|Saffir–Simpson scale}} (ordinarily categorized from category 1 to category 5)
:: Category 5
: '''Tornado intensities''', {{w|enhanced Fujita scale}} (ordinarily categorized from 0 to 5)
:: EF-5
: '''Credit (and other) ratings'''
:: A, AA, AAA
:: Credit rating agencies will rank businesses and governments based on their likely ability to pay back their creditors' interest ratings. The very highest are rated AAA, and then (in Standard & Poor's scheme) AA+, AA, AA-, A+, and so on. (Note that Randall's scale rates A+ as better than AA, indicating that it's the "A+" from school grades rather than the one from Standard & Poor's list.)

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

: [Caption above the frame:]
: Universal Rating Scale
:
: [A vertical scale, with 45 gradations, labeled]
: 0
: 1
: Strongly Disagree
: F
: [star] ☆
: Extinct
: Tall
: 2
: G
: Critical
: [frowny face] ☹
: 3
: endangered
: [two stars] ☆☆
: PG
: Disagree
: VG
: 4
: Grande
: 5
: PG-13
: [neutral face] 😐
: 6
: T for Teen
: 7
: [three stars] ☆☆☆
: Agree
: Venti
: 8
: Least Concern
: [smiley face] ☺
: A
: Strongly Agree
: Category 5
: EF-5
: NC-17
: UNC
: AA
: [four stars] ☆☆☆☆
: A+
: S
: AAA
: 10
: 10.0
: 11

{{comic discussion}}
[[Category:Charts]]