explain xkcd - User contributions [en]

Talk:2260: Reaction Maps

2020-01-27T23:44:45Z

Gidds:

I can't find Jump, OH. [[User:Jacky720|That's right, Jacky720 just signed this]] ([[User talk:Jacky720|talk]] | [[Special:Contributions/Jacky720|contribs]]) 23:19, 27 January 2020 (UTC)

I can't find a town named "A" in Clay County WV. Is there supposed to be one? [[Special:Contributions/162.158.214.136|162.158.214.136]] 23:35, 27 January 2020 (UTC)

Wiki sez: "Clay is a town in and the county seat of Clay County, West Virginia, United States.[6] The population was 491 at the 2010 census. It is the only incorporated town in Clay County." [[Special:Contributions/162.158.214.136|162.158.214.136]] 23:37, 27 January 2020 (UTC)

I completely missed this one! In my defence, here in southern England ‘Tudor’ sounds much less like ‘two-door’, and ‘compact’ is much less commonly applied to cars... [[User:Gidds|Gidds]] ([[User talk:Gidds|talk]]) 23:44, 27 January 2020 (UTC)

Talk:2203: Prescience

2019-09-16T17:17:25Z

Gidds:

I can't remember the last time a sitting President has been struck by lightning.  [[Special:Contributions/162.158.154.145|162.158.154.145]] 16:09, 16 September 2019 (UTC)

You know, they still haven't attained world peace.  [[Special:Contributions/172.69.68.213|172.69.68.213]] 16:34, 16 September 2019 (UTC)

I can't find it right now, but reminds me of the (probably apocryphal) story of a Stanford professor who was on the phone to a colleague at Berkeley. Berkeley guy suddenly says "I gotta go, there's an earthquake!", and hangs up. Stanford walks out into the hall, takes a sip of his coffee, looks at his watch and says "hey, aren't we about due for an earthquake?", right before the tremors hit.[[User:UStralian|UStralian]] ([[User talk:UStralian|talk]]) 16:49, 16 September 2019 (UTC)

I love the pun in the title between _prescience_ (awareness of the future) and _pre-science_ (before science)... [[User:Gidds|Gidds]] ([[User talk:Gidds|talk]]) 17:17, 16 September 2019 (UTC)

Talk:2193: Well-Ordering Principle

2019-08-24T00:23:00Z

Gidds:

Still a "trap": POOF, you're now the worst McFly cosplayer; here's a mirror.
:She asked about people who 'tried' to dress as Marty McFly. So unless Megan has ever tried to dress as him, I don't think she can be the answer.[[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 00:10, 24 August 2019 (UTC)

*Are* costumes well-ordered? Even leaving aside the subjectivity of any ranking, there are several different criteria which could be used, and many ways of combining them. (What if the costume which looked least like Marty wasn't the ugliest, nor the one showing least effort?) — Also, may be worth qualifying the explanation of Halloween by mentioning the USA; some other countries don't celebrate it, and of those that do, not all do trick-or-treating or dressing-up &c. [[User:Gidds|Gidds]] ([[User talk:Gidds|talk]]) 00:23, 24 August 2019 (UTC)

Talk:2182: When I'm Back at a Keyboard

2019-07-30T16:07:42Z

Gidds: Add comment re. Gemini

Should be added to <code>Category:Jurassic Park</code>. [[User:PvOberstein|PvOberstein]] ([[User talk:PvOberstein|talk]]) 17:09, 29 July 2019 (UTC)

There are ways to type into your phone using your computer keyboard. Should we add that piece of info to the explanation? [[User:FlavianusEP|FlavianusEP]] ([[User talk:FlavianusEP|talk]]) 19:47, 29 July 2019 (UTC)
:There are, but they're mostly redundant. When on the go, how would you juggle a phone AND a keyboard? When back home, why not use a big screen with a keyboard instead of a tiny one with same? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 05:55, 30 July 2019 (UTC)
::More and more people only have a cell phone and don't have a computer at home. Of course, it's unlikely those would bother with figuring out how to attach a full-sized keyboard and/or cast their screen to a large display anyway; if those were important to them, they would probably opt for a regular computer anyway. Either way, probably not worth adding to the main page. [[User:N0lqu|-boB]] ([[User talk:N0lqu|talk]]) 14:22, 30 July 2019 (UTC)
::Some phones have a physical keyboard built-in, such as the [https://igg.me/at/geminipda Gemini] and [https://igg.me/at/gogocosmo Cosmo Communicator]. As a happy owner of the former, I can vouch for how easy it is to generate as well as consume ‘content’ on a phone. PS. You'll never guess what I'm typing this on… [[User:Gidds|Gidds]] ([[User talk:Gidds|talk]]) 16:07, 30 July 2019 (UTC)

Talk:2037: Supreme Court Bracket

2018-08-24T23:56:38Z

Gidds: Add sig. (Didn't realise I wasn't logged in when adding the last comment!)

Came here for insight, only to discover this is tomorrow's comic, I'm viewing Friday's comic on Thursday after midnight. D'oh! Damn, seeing a comic early and I can't provide or contribute to the explanation, LOL! I realize the bracket and "Sweet 16" are sports things, I think football and/or basketball, and I spotted the famous name Roe vs. Wade, so seems like court cases, but that's it. Looking forward to people explaining the smaller jokes (I spotted "Loving" and "Virginia", and I feel like I recall their license plates say "Virginia Is For Lovers" I think, I expect something there). [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 04:58, 24 August 2018 (UTC)
:Protip: Thursday after midnight is Friday! Nonetheless this comic was released at 0:00 EDT meaning it was still Thursday at time zones westwards. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 07:03, 24 August 2018 (UTC)
:I got here at like 9:10 Pacific time and the comic was already up; normally I have to wait until like 1 AM before Randall posts it/you guys auto-mirror it.[[Special:Contributions/172.68.189.235|172.68.189.235]] 08:23, 24 August 2018 (UTC)
::The pages here are created automatically less than two minutes after the original was published on xkcd. Today, like some others in the recent past, this happened at 4:01 UTC (or GMT - the server time) which corresponds to 0:01 EDT (Randall time) and 21:01 PDT (the day before at your time.) The weekday is defined by Randall's time zone - US citizens should know about the shift from east to west. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 12:01, 24 August 2018 (UTC)

Errm. You can go back to the previous comic if you hit the [<Prev] button just above the current one. {{unsigned ip|141.101.107.36}}

I agree that this is a sports reference, but can someone also include some sort of note about the title? I think that the "Supreme COURT" is referring to a basketball COURT, connected to how brackets like this are used in basketball like with March Madness. [[User:B. A. Beder|B. A. Beder]] ([[User talk:B. A. Beder|talk]]) 05:50, 24 August 2018 (UTC)
:No, I'm pretty sure it's titled Supreme Court Bracket because the bracket consists of cases in which the Supreme Court of the United States made the rulings. [[Special:Contributions/162.158.90.6|162.158.90.6]] 10:35, 24 August 2018 (UTC)
::Why not both? [[Special:Contributions/108.162.219.82|108.162.219.82]] 18:49, 24 August 2018 (UTC)

Well, how would the tournament turn out? We know who won the cases, so who's the king of the US legal system? --[[Special:Contributions/162.158.90.66|162.158.90.66]] 06:41, 24 August 2018 (UTC)
: Many participants fail to reappear for the round 2, so not much progress yet. [[Special:Contributions/141.101.77.86|141.101.77.86]] 13:24, 24 August 2018 (UTC)

Moral of the story: If you are the respondent in a landmark case, you might as well give up. --[[User:Troy0|Troy0]] ([[User talk:Troy0|talk]]) 07:53, 24 August 2018 (UTC)
:I noticed that as well. Do most "landmark" cases go to the plaintiff or is this just an outlier sample?[[Special:Contributions/172.68.189.235|172.68.189.235]] 08:23, 24 August 2018 (UTC)
: But Marbury actually won the case, the court was unable to deliver the ruling [[Special:Contributions/162.158.155.104|162.158.155.104]] 09:42, 24 August 2018 (UTC)
::"Marbury won"? Not according to the unanimous 4-0 ruling AGAINST Marbury.[[Special:Contributions/172.69.22.140|172.69.22.140]] 20:20, 24 August 2018 (UTC)
: As I see it (IANAL), the plaintiff goal in the Supreme Court usually is to change something (overrule a previous court decision, repeal a law), while the respondent typically fights to keep things the same. If the plaintiff loses, no changes are made. If nobody sees any changes in the country, why the case would be a landmark? Only when both outcomes change things for many people, like in the Dred Scott case, the respondent win makes a landmark. [[Special:Contributions/141.101.77.86|141.101.77.86]] 13:24, 24 August 2018 (UTC)

I think this comic is unique because the comic references real life events without throwing in any fake events for comic effect. Usually the comic would have some imaginary events included. I guess just the idea that winners of Supreme Court cases are going to come back to the court and compete against each other is comical enough. [[User:Rtanenbaum|Rtanenbaum]] ([[User talk:Rtanenbaum|talk]]) 15:42, 24 August 2018 (UTC)

;Adding an image
I created an image showing the winners superimposed on the original comic so you can see who is due to "play" each other next. Is there any way to upload the file? the image is this: http://www.explainxkcd.com/wiki/index.php/Special:UploadStash/thumb/15zj3hymeul4.6wctza.13964.png/600px-15zj3hymeul4.6wctza.13964.png [[User:Mrdownes|Mrdownes]] ([[User talk:Mrdownes|talk]]) 11:27, 24 August 2018 (UTC)
:In general we don't need such an image because it doesn't explain much and the winners are already highlighted at the explanation. This Wiki isn't a picture book. Nevertheless check the menu and you will find the entry "Upload file". --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 12:09, 24 August 2018 (UTC)
:I think that updated bracket image would be fun to see regardless. Please do post it. [[User:Wisnij|Wisnij]] ([[User talk:Wisnij|talk]]) 19:08, 24 August 2018 (UTC)

The Brown won the NLRB v Brown match in round 2. (https://supreme.justia.com/cases/federal/us/380/278/) -[[Special:Contributions/172.69.69.244|172.69.69.244]] 15:19, 24 August 2018 (UTC)

Just wanted to thank all you folks for the explanation! I couldn't make head or tail of this comic… (Comes of being a non-USian, I guess. Even after reading this page, I only recognised two of those cases. xkcd is usually pretty universal — within the geek world, anyway — and US-specific ones like this are pretty puzzling to the rest of us.) Cheers! — [[User:Gidds|Gidds]] ([[User talk:Gidds|talk]]) 23:56, 24 August 2018 (UTC)

1831: Here to Help

2017-05-12T19:55:59Z

Gidds: Add link to 1570: Engineer Syllogism. (I came to add 793: Physicists too, but someone beat me to it! Great minds...)

{{comic
| number = 1831
| date = May 1, 2017
| title = Here to Help
| image = here_to_help.png
| titletext = "We TOLD you it was hard." "Yeah, but now that I'VE tried, we KNOW it's hard."
}}

==Explanation==
{{incomplete|Is the hard problem explanation relevant? The main part of that explain has been moved into a trivia for easier reading to the conclusion at least.}}
This comic is a satire of computer programmers, who sometimes forget that not everything can be solved with an {{w|algorithm}}, or of the tendency to think computers are the answer to everything. In the first panel, [[Megan]] talks about how the field that she and [[Hairy]] works in has a difficult problem that many people have been working on. [[Cueball]], believing that algorithms can solve their problem, tries to help. In the next panel, Megan and Hairy silently watch Cueball working on the problem on his laptop. Finally, six months later, Cueball concedes, and an exasperated Megan retorts sarcastically, pointing out that she had explained its difficulty six months ago with the timeline.

The title text furthers Cueball's apparent arrogance by showing a dialogue. Megan or Hairy says, "We TOLD you it was hard," referring to the first panel, but Cueball, still confident in his own ability's superiority, says, "Yeah, but now that I'VE tried, we KNOW it's hard." The joke is that Cueball believes that, even though he has just failed, it was his attempt which proved the difficulty, and not Megan and Hairy's work for years. The dialog references an exchange from the recent film ''{{w|The Imitation Game}}'', in which {{w|Alan Turing|Alan Turing's}} superior claims, "The Americans, the Russians, the French, the Germans, everyone thinks Enigma is unbreakable." and Turing replies, "Good. Let me try and we'll know for sure, won't we?"

The satire, however, applies far beyond computer programmers. It can be read as a political commentary, like in ''[http://nymag.com/daily/intelligencer/2017/02/trump-nobody-knew-health-care-could-be-so-complicated.html Nobody knew health care could be so complicated.]'' It is what we'd all like to see when well-meaning advice givers provide the "simple" solution to all our problems, or management provides glib advice from ten thousand feet. It is a commentary on the universal tendency to see problems as simple because we don't know what makes them hard.

In the first place, the satire apparently refers to the mathematical/informatical definition of a "hard problem" (see [[#Trivia|below]]) and its confusion with its trivial understanding as well as to a common misunderstanding about verification/falsification. The plot is that Cueball is an enthusiastic and optimistic programmer but obviously a bad informatics guy because he apparently does not know the technical meaning of a "hard problem" and mixes up the lack of a successful falsification/disproof that a problem is "hard" with a verification/proof. Actually, the formal proof that a problem is "hard" would not be a fail, but an "epic win" (well, maybe not for the disappointed Cueball).

The comic may refer to the false belief that there is a solution algorithm for any problem (see [[#Trivia|below]]).

This may also be referencing IT support call centres ([[806: Tech Support]]), who often act as though complex computer problems can be solved with clichèd solutions such as 'turn it off and back on again'.

This comic calls back to [[793: Physicists]] and possibly [[1570: Engineer Syllogism]] in central theme.

==Transcript==
:[Megan, standing next to Hairy, is addressing the reader holding her arms out. Cueball walks in from the right.]
:Megan: Our field has been struggling with this problem for years.

:[Cueball holds his laptop high up in one arm above Megan's head while holding his other arm out as well. Megan has turned to look at him.]
:Cueball: Struggle no more! I'm here to solve it with ''algorithms!''

:[In a frame-less panel Cueball sits on a chair at a desk with his laptop working on it, while Hairy and Megan looks on from behind.]

:[Cueball, still sitting at his laptop, points at the screen. Megan raises her arms and four small lines above her head, on either side of her speech line, indicate her annoyance with Cueball.]
:Six months later:
:Cueball: Wow, this problem is really hard.
:Megan: '''''You don't say.'''''

==Trivia==
*'''Hard problem''':
**The trivial understanding of a "problem" is any random task like "make me a webpage" and a "hard problem" means "it takes much effort to solve it". However, the informatical definition of a "problem" is a formal description of a task like "find me the password to a given hash (with a length of N bits)" so it can be solved with an algorithm, i.e. a formal mathematical "how-to" or a piece of program code. A "hard problem" is a problem which can only be solved by "brute force", that means (in this example) you have to try every possible password (2^N possibilities) and check whether its hash matches the given one. A "simple problem" is a one where a "short-cut" algorithm to the "brute force" method exists. There are problems which can be formally proven to be "hard" but, unfortunately, most problems like breaking a certain encryption algorithm can only be hoped to be "hard" or at least not be proven "simple" by finding a "short-cut" too soon. You may prove that a problem is not "hard" by finding such a "short-cut" but you cannot prove it is "hard" by trying and failing (the fact that you didn't find a "short-cut" does not mean there is none).

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Hairy]]
[[Category:Programming]]

Talk:1338: Land Mammals

2014-03-05T11:34:43Z

Gidds:

Is it mass or weight? --[[Special:Contributions/173.245.53.119|173.245.53.119]] 06:38, 5 March 2014 (UTC)

:It says weight. Since most land animals live on the... land, there is not much difference. I suppose if a lot of aninimals lived near a [https://xkcd.com/852/ prime pole vaulting location] it could skew the results. [[Special:Contributions/108.162.246.117|108.162.246.117]] 06:40, 5 March 2014 (UTC)

I'm really curious, what are the other, unlabeled groupings? [http://vaclavsmil.com/the-earths-biosphere-evolution-dynamics-and-change/ Author's website] {{unsigned ip|108.162.215.46}}

<pre>
On page 186 of Smil's referenced book, there is a bar chart with the following values in millions of tons (*=not used in Randall's graphic):
elephants 0.8
horses 40
pigs 100
cattle 450
people 280
*whales 80
*all wild vertebrates 30
*all domesticated vertebrates 650
</pre> {{unsigned ip|108.162.215.46}}

I think that this graph is actually more illustrative of how much support humans need to maintain themselves (the amount of cattle is astonishing). [[User:Lcarsos|lcarsos]]<span title="I'm an admin. I can help.">_a</span> ([[User talk:Lcarsos|talk]]) 07:58, 5 March 2014 (UTC)

:''need''? I don't think we ''need'' so much cattle. It's just that most people prefer hamburgers and steaks to beans. So, how much we ''use'' to maintain ourselves would be better. (BTW, you don't count yourself as human?) -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 10:39, 5 March 2014 (UTC)

:According to [http://www.psychologytoday.com/blog/canine-corner/201209/how-many-dogs-are-there-in-the-world] there are 525 million dogs, assuming 20 kg as average weight, this should give 10 squares in the diagram. I can't find reliable numbers for cats, but there are more cats than dogs, but they don't weigh as much, so their total weight could be similar to that of the dogs. --[[Special:Contributions/108.162.254.160|108.162.254.160]] 08:42, 5 March 2014 (UTC)

The blob of 13 under the word Livestock may very well represent both dogs and cats. {{unsigned ip|108.162.215.46}}

Does anybody see a reason for the particular layout of the blocks? My first impression was a globe but obviously it doesn't correspond to any ontinents, etc. [[Special:Contributions/108.162.254.66|108.162.254.66]] 08:44, 5 March 2014 (UTC)
: I've been wondering myself... I do think it is a picture of something. My ideas so far: an eye, a fried egg, a cell. --[[User:Divad27182|Divad27182]] ([[User talk:Divad27182|talk]]) 09:29, 5 March 2014 (UTC)

::It may simply be something-like-a-circle of humans with the rest surrounding it. But it DOES look like a cell. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 10:39, 5 March 2014 (UTC)

:: Could it be a sort of relationship diagram? It looks like we're in the centre, with the animals we have the closest relationships with — our pets and our food — nearest, and those we're less concerned with further away. [[User:Gidds|Gidds]] ([[User talk:Gidds|talk]]) 11:34, 5 March 2014 (UTC)