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		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2702:_What_If_2_Gift_Guide&amp;diff=303863</id>
		<title>Talk:2702: What If 2 Gift Guide</title>
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				<updated>2023-01-02T17:03:59Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.244: /* &amp;quot;Katherine and Brandon&amp;quot; */&lt;/p&gt;
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&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~ and don't delete this text. New comments should be added at the bottom.--&amp;gt;&lt;br /&gt;
The puzzle is almost certainly a reference to the Monty Hall problem, since that's usually framed in terms of 3 doors: behind 2 are goats (bad prizes), behind the third is a new (the desirable prize). While the other puzzles share some attributes, I doubt they're intended. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 21:55, 23 November 2022 (UTC)&lt;br /&gt;
:Who says goats are a bad prize? If you want to make goat's milk cheese, they are quite necessary. Whereas a car may be a burden, most states still require the recipient to pay sales tax, which can be thousands of dollars. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 01:58, 24 November 2022 (UTC)&lt;br /&gt;
:Maybe figuring out how to transport the goats in the new car without the goats ruining it would also be a puzzle.[[Special:Contributions/172.71.102.215|172.71.102.215]]&lt;br /&gt;
:I don't think there is a solid enough connection to the Goat, Wolf, Cabbage problem to warrant including in the table as a reference. [[Special:Contributions/162.158.166.124|162.158.166.124]] 18:26, 30 November 2022 (UTC)&lt;br /&gt;
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The goat can be left on its own, but not with the fox or the cabbage. [[Special:Contributions/172.70.162.135|172.70.162.135]] 00:12, 24 November 2022 (UTC)&lt;br /&gt;
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Another problem with the James Webb photo is that, from its orbit, the Earth appears too close to the Sun to be safe to photograph.  So, the recipient of the gift would have to travel into deep space, well past the orbit of the Moon, for the shoot. [[Special:Contributions/172.70.111.29|172.70.111.29]] 22:22, 23 November 2022 (UTC)&lt;br /&gt;
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Wasn't Bobcat in a Box inspired by xkcd #576 and its title text, which wasn't even the first boxed bobcat in xkcd? Feels weird to say that the boxed bobcat is a reference to an external brand and not xkcd's rich internal history of mailing people bobcats. [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 06:14, 24 November 2022 (UTC)&lt;br /&gt;
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I assume that even if the platinum (or platinum-iridium) cylinder used to define kilogram was recreation, rather than original, it would still be very expensive ($31,965 per kg). --[[User:JakubNarebski|JakubNarebski]] ([[User talk:JakubNarebski|talk]]) 11:40, 24 November 2022 (UTC)&lt;br /&gt;
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== &amp;quot;Katherine and Brandon&amp;quot; ==&lt;br /&gt;
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Could someone explain those Names in the &amp;quot;Chemistry&amp;quot; entry to me? It would be very atypical for Randall to make a mistake in that place, but both seem to be impossible to spell with the periodic table of elements.&lt;br /&gt;
Potassium, Astatine and Helium would give K-At-He- (and some radiation posioning) and Iodine and Neon -Id-Ne. But neither Rubidium (Ru), nor Radium (Ra), nor Ruthentium (Ru), nor Rhodium (Rh) nor Radon (RN) give you a pure &amp;quot;R&amp;quot; and likewise there is no Element Ri or Er, so it is impossible to put the &amp;quot;R&amp;quot; into &amp;quot;Katherine&amp;quot;.&lt;br /&gt;
Likewise &amp;quot;Brandon&amp;quot; could be started with Boron (B), Radon (Ra), Nitrogen (N) and finished with Oxygen (O) and again Nitrogen (N), but there are only two &amp;quot;D&amp;quot;s in the whole peridoic table and both are fixed to other letters, that would not fit: Paladium (Pd) and Gadolinium (Gd).&lt;br /&gt;
P.S.: 3 full Minutes of Captcha-solving for a Wiki? WTF??? {{unsigned ip|172.70.247.13|23:40, 23 November 2022}}&lt;br /&gt;
:Potassium-Astatine-Hydrogen-'''Erbium'''-Iodine-Neon [[Special:Contributions/172.69.79.184|172.69.79.184]] 23:59, 23 November 2022 (UTC)&lt;br /&gt;
:As for Brandon, you seem to have missed '''Neodymium''' (Nd). So, Boron-Radon-Neodymium-Oxygen-Nitrogen [[User:TurZ|TurZ]] ([[User talk:TurZ|talk]]) 07:00, 24 November 2022 (UTC)&lt;br /&gt;
Could he be limiting himself to rendering only the capital letters of each element? [[Special:Contributions/172.71.160.43|172.71.160.43]] 00:17, 24 November 2022 (UTC)&lt;br /&gt;
But Astatine is so radioactive that no one has ever seen it. A lump big enough to physically see would instantly sublimate with its own heat of radioactivity. [[Special:Contributions/172.68.210.7|172.68.210.7]] 00:08, 24 November 2022 (UTC)&lt;br /&gt;
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Due to the prior comic, I actually bought a Cybiko (I'm into older computer collecting). Now that he's mentioned it again, I'm thankful I got it quick, before the inevitable price rise. [[Special:Contributions/108.162.221.106|108.162.221.106]] 01:00, 24 November 2022 (UTC)&lt;br /&gt;
:Is it good? —[[User:While False|While False]] ([[User:While False/explain xkcd museum|'''museum''']] | [[User talk:While False|talk]] | [[special:Contributions/While_False|contributions]] | [[special:Log/While_False|logs]] | [[Special:UserRights/While_False|rights]] | [https://www.explainxkcd.com/wiki/index.php?title=User:While_False&amp;amp;printable=yes printable version] | [https://www.explainxkcd.com/wiki/index.php?title=User:While_False&amp;amp;action=info page information] | [https://www.explainxkcd.com/wiki/index.php/Special:WhatLinksHere/User:While_False what links there] | [https://www.explainxkcd.com/wiki/index.php?title=Special:RecentChangesLinked&amp;amp;days=30&amp;amp;from=&amp;amp;target=User%3AWhile_False related changes] | [https://www.google.com Google search] | current time: {{CURRENTTIME}})  05:28, 24 November 2022 (UTC)&lt;br /&gt;
:I got one, long ago.  I think it has a serial connection (RS232?) as well as a radio of whatever kind, and there was reasonably good SDK support for writing your own software, on PC, to download to the Cybiko.  I had and have an RSI problem with my hands, and what I tried to do is to use it as a one-handed PC keyboard - so I had to do some pretty simple programming for that, to transmit keys.  On the PC end, I think that a serial keyboard was or is a standard supported disability aid option.  It might wear out, thought.  But currently I do better with a touch screen PC and the &amp;quot;FITALY&amp;quot; on-screen typing program - the man who wrote that died, though.  Robert Carnegie rja.carnegie@gmail.com [[Special:Contributions/172.70.162.222|172.70.162.222]] 13:03, 24 November 2022 (UTC)&lt;br /&gt;
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Might be relevant, but What If? had a chapter dedicated to the hypotetical idea of building a periodic table with each square comprised of the element represented therein. It obviously gets dangerous/apocalyptic by the time you get past the first couple rows.--[[Special:Contributions/172.71.114.20|172.71.114.20]] 13:19, 26 November 2022 (UTC)&lt;br /&gt;
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A quick and largely inelegant run-through (assuming I listed all 118 correctly) shows that as well as two single characters (J and Q) for which there are currently no possible elemental spellings, there are a further 45 digraphs (excluding those already rendered impossible) with no possibilities of being spelt, as well as 2543 trigraphs (again, minus all those predisqualified) which cannot be so rendered. (Without such cascading exclusions, that's 145 digraphs and 8365 trigraphs - out of the basic and otherwise unaccented 26 letters, making a full 8%, 21% and 48%, respectively of all conceivable lengths from 1 to 3, incapable of being sequenced.)&lt;br /&gt;
&amp;lt;br /&amp;gt;Though all absences should more properly be weighted to the likelihood of encountering them, as well. Maybe &amp;quot;ytz&amp;quot; isn't such a great loss, and &amp;quot;qqq&amp;quot; even less so; except perhaps by the next Musk child, who will probably have other issues to worry about. But the impossibility of &amp;quot;dan&amp;quot; (not even with Deuterium, which was just one of those that I didn't include in my check) causes problems for anyone called Dan as well as hypernyms (Daniel/Danielle, etc, though for those, and others, the lack of &amp;quot;iel&amp;quot; is probably a bigger problem). If anyone is called anything like &amp;quot;BMX&amp;quot; or &amp;quot;BMW&amp;quot; (depending upon the peculiar, and possibly misguided, aspirations of their parents) then they're probably also outliers!&lt;br /&gt;
&amp;lt;br /&amp;gt;If I find a good name-frequency list, I may run the lists through a further stage to highlight particularly overlooked holes in the sequences such that we can work out which new symbols (under the guise of whole 'relevant' names) we could most usefully petition IUPAC to adopt for elements 119+... ;) [[Special:Contributions/172.71.178.136|172.71.178.136]] 07:10, 27 November 2022 (UTC)&lt;br /&gt;
:Impossibility of a short name does not necessarily imply longer names containing them are impossible. &amp;quot;Tim&amp;quot; is not possible, but &amp;quot;Timothy&amp;quot; is. [[Special:Contributions/172.70.46.30|172.70.46.30]] 12:01, 28 November 2022 (UTC)&lt;br /&gt;
::I'd forgotten I'd set this thing running but, on getting back from my Christmas break I spotted that my (woefully inefficient) script had got to a certain point. And unlikely to get to the next waypoint any time soon without a major optimisation/parallelisation rewrite!&lt;br /&gt;
::I used a semi-weighted list of the top 100 names given to boys in Britain over the last several decades. I first tried to get a list of more names, male and female, with actual number of instances, but I didn't get anything easily analysable so quickly plugged in the above for proof-of-conceot and approximated numbers by doing something clever but not necessarily correct from the ranking number, if any, in each year... (&amp;quot;Jack&amp;quot;, in my system, is 197 times more common than &amp;quot;Otis&amp;quot;. &amp;quot;Tommy&amp;quot; is the median, at 4.4 times Otis, just above Mohammad at 4.2 - but even if I've got the order right, I probably have mis-scaled my population numbers. I used Logs, along the way, to try to actually make the changes less steep, but only so that the figures &amp;quot;looked right ...ish&amp;quot;.)&lt;br /&gt;
::I did an assessment of how novel element symbols might 'improve' name coverage. By two measures. Firstly, by just how many more names (than the baseline) any given symbol(s) added to the spellable list, without regard for popularity. Secondly, by how many more individuals (by assumed frequency of any given name) would benefit.&lt;br /&gt;
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{| class=&amp;quot;wikitable&amp;quot; style=&amp;quot;margin:auto&amp;quot;&lt;br /&gt;
! Combos !!colspan=&amp;quot;7&amp;quot;|2-letter symbols only!!colspan=&amp;quot;7&amp;quot;|1- and 2-letter symbols&lt;br /&gt;
|-&lt;br /&gt;
|rowspan=&amp;quot;4&amp;quot;|Symbols||676||Total||colspan=&amp;quot;5&amp;quot;|(Aa..Zz)||702||Total||colspan=&amp;quot;5&amp;quot;|(A..Z,Aa..Zz)&lt;br /&gt;
|-&lt;br /&gt;
|573||Unused ||colspan=&amp;quot;5&amp;quot;|''not a current symbol''||586||Unused||colspan=&amp;quot;5&amp;quot;|&lt;br /&gt;
|-&lt;br /&gt;
|424||Unused2||colspan=&amp;quot;5&amp;quot;|''also not two current 1-char symbols''||437||Unused||colspan=&amp;quot;5&amp;quot;|&lt;br /&gt;
|-&lt;br /&gt;
| 30||Useful ||colspan=&amp;quot;5&amp;quot;|''also in sourced names''||41||Useful||colspan=&amp;quot;5&amp;quot;|&lt;br /&gt;
|-&lt;br /&gt;
!rowspan=&amp;quot;2&amp;quot;| !!rowspan=&amp;quot;2&amp;quot;|Combo sets!!colspan=&amp;quot;3&amp;quot;|More names!!colspan=&amp;quot;3&amp;quot;|Better names!!rowspan=&amp;quot;2&amp;quot;|Combo sets!!colspan=&amp;quot;3&amp;quot;|More names!!colspan=&amp;quot;3&amp;quot;|Better names&lt;br /&gt;
|-&lt;br /&gt;
!New Symbols!!% names!!% improve!!New Symbols!!% weight!!% improve!!New Symbols!!% names!!% improve!!New Symbols!!% weight!!% improve&lt;br /&gt;
|-&lt;br /&gt;
|Baseline ||0||''Current''||14%||''n/a''||''Current''||16%||''n/a''||colspan=&amp;quot;7&amp;quot;|''ditto''&lt;br /&gt;
|-&lt;br /&gt;
|Add one  ||30||Le||18%||29%||Ry ||23%||38%||41||R||23%||64%||J||40%||144%&lt;br /&gt;
|-&lt;br /&gt;
|Add two  ||435||El Li||21%||50%||Ma Oa||25%||53%||820||E L||35%||150%||J R||53%||122%&lt;br /&gt;
|-&lt;br /&gt;
|Add three||4,060||El Ja Le||24%||71%||Da El Ma||28%||71%||10,660||E L R||44%||214%||A J R||62%||277%&lt;br /&gt;
|-&lt;br /&gt;
|Add four ||27,405||El Ja Le Lo||27%||93%||Da El Ma Oa||30%||85%||101,270||A E J L||57%||279%||A J M R||68%||317%&lt;br /&gt;
|-&lt;br /&gt;
|Add five ||142,506||El Ja Le Lo Ma||29%||107%||Da El Ja Ma Oa||33%||101%||749,348||A E J L R||63%||350%||A E J L R||75%||362%&lt;br /&gt;
|-&lt;br /&gt;
|Add six  ||593,775||El Ja Le Lo Ma Mi||31%||121%||Da El Ja Le Ma Oa||35%||114%||4,496,388||A D J L M R||72%||414%||A E J L M R||82%||403%&lt;br /&gt;
|}&lt;br /&gt;
::FYI, the final four results give the following (previously invalid) extra names:&lt;br /&gt;
::* Six 2chars, most names: Arlo (never knew that was a name!), Benjamin, Bobby, Brody, Caleb, Dylan, Elijah, Ellis, Finley, Finn, Gabriel, Hudson, Jacob, Jasper, Leo, Liam, Logan, Louis, Luca, Lucas, Mason, Milo, Oliver, Oscar, Otis, Reuben, Samuel, Sonny, Stanley, Thomas, Yusuf (31 extra)&lt;br /&gt;
::* Six 2chars, best names: Bobby, Brody, Caleb, Daniel, Dylan, Elijah, Ellis, Finley, Finn, Gabriel, Hudson, Jacob, Jasper, Leo, Liam, Luca, Lucas, Mason, Noah, Oakley, Oliver, Oscar, Otis, Reuben, Samuel, Sonny, Stanley, Thomas, Yusuf (29 extra)&lt;br /&gt;
::* Six 1+2chars, most: Adam, Albie, Alfie, Alfred, Arlo, Arthur, Benjamin, Blake, Bobby, Brody, Caleb, Carter, Daniel, David, Dylan, Edward, Elijah, Ellis, Ethan, Ezra, Finley, Finn, Frankie, Freddie, Gabriel, George, Harrison, Harry, Harvey, Henry, Hudson, Hunter, Isaac, Jack, Jackson, Jacob, James, Jasper, Jesse, Joseph, Joshua, Jude, Kai, Leo, Liam, Logan, Louie, Louis, Luca, Lucas, Nathan, Noah, Oakley, Oliver, Ollie, Oscar, Otis, Ralph, Reuben, Riley, Ronnie, Rory, Rowan, Samuel, Sebastian, Sonny, Stanley, Teddy, Theo, Theodore, William, Yusuf (72 extra)&lt;br /&gt;
::* Six 1+2char, best: Albie, Alfie, Arlo, Arthur, Benjamin, Blake, Bobby, Brody, Caleb, Carter, Dylan, Elijah, Ellis, Ethan, Ezra, Finley, Finn, Frankie, Gabriel, George, Harrison, Harry, Harvey, Henry, Hudson, Hunter, Isaac, Jack, Jackson, Jacob, James, Jasper, Jesse, Joseph, Joshua, Kai, Leo, Liam, Logan, Louie, Louis, Luca, Lucas, Mason, Milo, Myles, Nathan, Noah, Oakley, Oliver, Ollie, Oscar, Otis, Ralph, Reuben, Riley, Roman, Ronnie, Rory, Rowan, Samuel, Sebastian, Sonny, Stanley, Theo, Thomas, William, Yusuf (68 extra)&lt;br /&gt;
::(Any errors in the above might just be my transcribing.)&lt;br /&gt;
::I had hoped to get to the point where the 1+2char test would actually find a 2char candidate in the final run. The last run started with &amp;quot;A Ad Bl C Ch D&amp;quot;, improving name quantity by 72% and fitness by 38%. At 0.38% of the way through the test, the list &amp;quot;A Ad E J L R&amp;quot; (fitness+367%) was the last appearance of a digraph in the incremental striving for higher values. I'm quickly guessing it'll be at the stage of testing 8+ additional symbols, maybe much later. And my current script will take at least two months to give me ''that'' result, even with some rather obvious shortcuts.&lt;br /&gt;
::...anyway, as I'm probably not going back to this, enjoy. And/or have a laugh at my incompetence. [[Special:Contributions/172.70.85.244|172.70.85.244]] 17:03, 2 January 2023 (UTC)&lt;br /&gt;
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== Psychology ==&lt;br /&gt;
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Hi, this is my first edit, I hope I'm doing it right. The psychology example is most likely about the norm of reciprocity (see Wikipedia). It's a very strong norm. Violations of this norm can indeed cause distress to a point where people express anger if they can't reciprocate (which seems somewhat irrational at times). &lt;br /&gt;
I'm a psychology student from Germany, I might do some errors when writing in english :) [[Special:Contributions/198.41.242.85|198.41.242.85]] 06:15, 24 November 2022 (UTC)&lt;br /&gt;
: Welcome! [[Special:Contributions/172.71.154.156|172.71.154.156]] 21:58, 24 November 2022 (UTC)&lt;br /&gt;
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== Baby Shoes ==&lt;br /&gt;
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Has nobody mentioned the xkcd comic that references this yet? https://www.explainxkcd.com/wiki/index.php/1540:_Hemingway&lt;br /&gt;
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Artinum [[Special:Contributions/172.71.178.186|172.71.178.186]] 09:45, 24 November 2022 (UTC)&lt;br /&gt;
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The alt text is a reference to Ernest Hemingway's 6 word short story [https://en.wikipedia.org/wiki/For_sale:_baby_shoes,_never_worn &amp;quot;For sale: baby shoes, never worn.&amp;quot;] This is also referenced in comic 1540 https://www.explainxkcd.com/wiki/index.php/1540:_Hemingway —[[User:Robm|Robm]] ([[User talk:Robm|talk]]) 19:04, 25 November 2022 (UTC)&lt;br /&gt;
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...this was [https://www.explainxkcd.com/wiki/index.php?title=2702:_What_If_2_Gift_Guide&amp;amp;diff=299763&amp;amp;oldid=299762 already Explained] before any of the above was added to the discussion. (It had to be improved, e.g. the wikilink, but now it's fairly well resolved unless you think it needs tweaking.) [[Special:Contributions/172.71.178.137|172.71.178.137]] 21:40, 25 November 2022 (UTC)&lt;br /&gt;
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I can't be the only one who wishes he'd done it as &amp;quot;Babies/Literature (Not Both): Baby Shoes&amp;quot; -- mezimm [[Special:Contributions/172.69.42.134|172.69.42.134]] 15:41, 28 November 2022 (UTC)&lt;br /&gt;
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Anyone who reads that short story and thinks it's sad hasn't experiences how quickly babies grow in a while. We've given away so many baby shoes that the baby grew out of before they got a chance to wear them. It's just a reality of life. [[User:Andyd273|Andyd273]] ([[User talk:Andyd273|talk]]) 17:43, 29 November 2022 (UTC)&lt;br /&gt;
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== Stephen King ==&lt;br /&gt;
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I admit I haven't read it, but might the entry for Stephen King's desk be a reference to ''Misery'', which involves an author kidnapped by a psycho fan of his?  Let me know how far off base I am, or if there's actually some merit to my speculation.  [[User:MarsJenkar|MarsJenkar]] ([[User talk:MarsJenkar|talk]]) 15:02, 1 December 2022 (UTC)&lt;/div&gt;</summary>
		<author><name>172.70.85.244</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2715:_Pando&amp;diff=303321</id>
		<title>2715: Pando</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2715:_Pando&amp;diff=303321"/>
				<updated>2022-12-23T13:55:31Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.244: Cat: lowercase (&amp;quot;ft&amp;quot;x2)&lt;/p&gt;
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&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2715&lt;br /&gt;
| date      = December 23, 2022&lt;br /&gt;
| title     = Pando&lt;br /&gt;
| image     = pando_2x.png&lt;br /&gt;
| imagesize = 422x372px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = The presents under the tree are actually a single gift connected by an underground ribbon system.&lt;br /&gt;
}}&lt;br /&gt;
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==Explanation==&lt;br /&gt;
{{incomplete|Created by a CHRISTMAS PANDA — Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
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{{w|Pando_(tree)|Pando}} is a {{w|Populus tremuloides|quaking aspen}} tree colony in {{w|Fishlake National Forest}}, Utah. Depending on how you measure[https://www.youtube.com/watch?v=vWAA-SrrFUQ], Pando is the largest living organism on earth, and is thereby also the largest tree on earth. (By dry mass (Weight not including water), Pando is the largest living thing humans have found. There is [https://www.forbes.com/sites/linhanhcat/2019/02/22/largest-organism-in-the-world/?sh=43fdf2a444ac one fungus in Oregon] which may weigh more including water, but that fungus is not a tree)&lt;br /&gt;
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Pando is a Tree colony, a type of {{w|Clonal colony}} made of trees. Clonal colonies all form from the same seed or other origin, and are all genetically identical. Tree colonies spread using their extensive root system. Under all trees there are {{w|Root|roots}}, which gather nutrients and water from soil. On clonal trees (Such as the Quaking Aspen, Pando's Species), when roots from one tree surface they can form another tree/stalk. This additional stalk is a genetic clone of the original. This clone then grows its own root network, and where they surface they too form more clones. However, crucially, the roots between the clones do not naturally separate, so all clones naturally stay attached. Each clone has a limited lifespan, only a few decades/centuries, but the colony can live for millennia. For example, the only known wild example of {{w|Lomatia tasmanica|''Lomatia tasmanica'', aka King's lomatia,}} is a clonal shrub thought to be at least 43,600 years old, and Pando itself is thought to be around 14,000 years old.&lt;br /&gt;
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{{w|Christmas}} is a celebration on the 25th of December, traditionally celebrating the birth of {{w|Jesus}}, but that festival being built heavily upon pagan traditions[https://chefin.com.au/blog/these-6-christmas-traditions-are-actually-pagan-customs/] and annual social customs, then arguably converted into a far more secular event (with or without rampant consumerism). This comic was published on the 23rd of December, 2 days until Christmas, or [[Christmas Eve Eve]]&lt;br /&gt;
&lt;br /&gt;
The concept of a {{w|Christmas tree}}, itself, is rooted&amp;lt;!--No Pun Intended--&amp;gt; in various pre-Christian folkloric traditions and, in the modern era, may be adapted or adopted as required by local and personal circumstances, and need not be an {{w|Evergreen}} fir tree with an angel (or star) atop, but merely any handy plant (or artificial substitute) strewn with such decorations and/or {{w|Christmas lights|lights}} as the owner wishes. Because humans are, well, humans, people and places often compete to hold the record for the largest Christmas tree. At time of publishing (And writing), the tallest Christmas tree is officially a 64.36m (221ft) tall {{w|Douglas fir}} that was displayed in {{w|Northgate Station (shopping mall)|Northgate Shopping Center}}{{Actual citation needed}}, Seattle, WA in 1950[https://www.guinnessworldrecords.com/world-records/77271-tallest-christmas-tree][https://www.historylink.org/File/21359]. The most widely spread, however, is likely the [https://www.italybyevents.com/en/events/umbria/world-largest-christmas-tree-gubbio/ Christmas tree display] in {{w|Gubbio}}, a town in Umbria, Italy, where hundreds of trees on a mountain face are lit up with light to form a Christmas tree shape. &lt;br /&gt;
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Sidenote: A lot of articles say that the Gubbio tree has a Guinness world record. However, I can't find a citation for that. If anyone can, please add it. That would be appreciated.&lt;br /&gt;
&lt;br /&gt;
In this comic, [[Randall]] proposes putting Christmas lights all the way around Pando to turn into (Technically) a Christmas tree. As Pando is the worlds largest tree then, if this plan were to be carried out, it would safely take the record and hold it for quite some time.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
:[The main comic frame is a profile view of a number of separated trees, of varying heights and maturity, across each of which (of those with sufficient height) has apparently been draped a single chain of decorative lights that goes from off-image at one side to off-image at the other.]&lt;br /&gt;
&lt;br /&gt;
:[Inset in the bottom right is a mini-map implicating that these light-linked 'trees' are actually all risers from a single large superorganism (as a shaded complex but contiguous shape labelled &amp;quot;Pando&amp;quot;), the map has a &amp;quot;N&amp;quot;orth pointer, a scale bar indicating the length of &amp;quot;1,000 ft&amp;quot; (approximately a third of the shaded mass's full width) and a convex hull perimeter line tightly fitting the shaded area that has an indicative arrow from a label informing us that its length would be &amp;quot;9,300 ft&amp;quot;.]&lt;br /&gt;
&lt;br /&gt;
:[Caption below:] Christmas Science Fact: Pando is approximately 9,300 feet away from being the world's largest Christmas Tree.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics with lowercase text]] &amp;lt;!-- A couple of examples of &amp;quot;ft&amp;quot;, upon the inlaid minimap--&amp;gt;&lt;/div&gt;</summary>
		<author><name>172.70.85.244</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2714:_Cold_Complaints&amp;diff=303295</id>
		<title>2714: Cold Complaints</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2714:_Cold_Complaints&amp;diff=303295"/>
				<updated>2022-12-23T09:44:21Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.244: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2714&lt;br /&gt;
| date      = December 21, 2022&lt;br /&gt;
| title     = Cold Complaints&lt;br /&gt;
| image     = cold_complaints.png&lt;br /&gt;
| imagesize = 740x254px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = Our investigation into whining-based remedies became the first study to be halted by the IRB on the grounds that the treatment group was 'too annoying.'&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a GIGANTIC WHINING BABY - Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
When people are ill, they will often complain about the symptoms that they're suffering from. A common stereotype is that men will revert to infantile behavior when miserably sick. This can be annoying to the people around them, but they typically tolerate such behavior out of compassion. The joke in this comic is that [[Hairy]] spoke via a {{w|telehealth}} appointment to [[Ponytail]], a medical professional who explicitly advised him to act out, since his condition has no effective medical treatment. He takes her advice to, &amp;quot;act like you're the first person ever to have a cold,&amp;quot; literally, stating it specifically when his companion asks about it. Given xkcd's humor in the past, this may be supposed to trick the cold virus into thinking that it has not had a lot of time to evolve to infect human cells effectively so that it does not infect Hairy's cells as effectively.&lt;br /&gt;
&lt;br /&gt;
This comic was published during a &amp;quot;tripledemic&amp;quot; in the U.S., involving {{w|COVID-19}}, {{w|influenza}}, and {{w|respiratory syncytial virus}} (RSV, a frequent cause of common colds) infections, the latter of which do not have readily available effective treatments, other than to wait them out with plenty of rest and fluids (provided that symptoms do not require hospitalization). It expounds on the finding that, &amp;quot;talking about troublesome events, including events with which one is dissatisfied, may ... result in improved physiological health.&amp;quot; (Kowalski, R.M. (2002) [http://people.uncw.edu/hakanr/documents/whining.pdf &amp;quot;Whining, griping, and complaining: positivity in the negativity&amp;quot;] ''Journal of Clinical Psychology'' '''58'''(9):1023–35.) &lt;br /&gt;
&lt;br /&gt;
The title text describes a similar study, but where the {{w|institutional review board}} (IRB) halted the study because the participants were too annoying. This is ironic since they were supposed to whine annoyingly for the sake of the experiment. IRBs are expected to review the ethics of a research project, with particular attention paid to the well-being of the subjects. Whining is not usually considered dangerous,{{citation needed}} but in this case it was presumably so intolerable to the Board (or perhaps the control group, who were presumably forbidden from whining while sick) that they had to put a stop to it.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
:[Hairy sitting on a chair in front of a computer screen. There is an image of Ponytail on the screen speaking.]&lt;br /&gt;
:Ponytail: Well, it's not COVID or flu. Probably one of the other viruses.&lt;br /&gt;
:Hairy: Ughh&lt;br /&gt;
&lt;br /&gt;
:[A zoomed out version of the image, Ponytail cannot be seen]&lt;br /&gt;
:Ponytail: There's not much you can do to speed up recovery other than rest, hydrate, and whine and complain and be a gigantic baby about it. &lt;br /&gt;
&lt;br /&gt;
:[Same as previous panel]&lt;br /&gt;
:Hairy: Whine and complain?&lt;br /&gt;
:Ponytail: Yeah. You need to act like you're the first person ever to have a cold.&lt;br /&gt;
&lt;br /&gt;
:[Hairy lying on a couch wrapped in a blanket, with a lot of paper tissues around]&lt;br /&gt;
:Off-screen voice: Are you '''''sure''''' that's what she said?&lt;br /&gt;
:Hairy: Unbelievable. Here I am, the only person ever to feel bad, and you're '''''doubting''''' me?  &lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Hairy]]&lt;br /&gt;
[[Category:Doctor Ponytail]]&lt;br /&gt;
[[Category:Medicine]]&lt;br /&gt;
[[Category:COVID-19]]&lt;/div&gt;</summary>
		<author><name>172.70.85.244</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2714:_Cold_Complaints&amp;diff=302125</id>
		<title>2714: Cold Complaints</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2714:_Cold_Complaints&amp;diff=302125"/>
				<updated>2022-12-22T03:17:14Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.244: Better undo than the last, restoring genuine elements.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2714&lt;br /&gt;
| date      = December 21, 2022&lt;br /&gt;
| title     = Cold Complaints&lt;br /&gt;
| image     = cold_complaints_2x.png&lt;br /&gt;
| imagesize = 740x254px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = Our investigation into whining-based remedies became the first study to be halted by the IRB on the grounds that the treatment group was 'too annoying.'&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a GIGANTIC WHINING BABY - Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
When people are ill, they will often complain about the symptoms that they're suffering from. A common sterotype is that men will revert to infantile behavior when miserably sick. This can be annoying to the people around them, but they typically tolerate such behavior out of compassion. The joke in this comic is that [[Hairy]] spoke to a medical professional via {{w|telemedicine}}, when he was explicitly advised to act like this, since his condition has no effective medical treatment. He takes the advice to, &amp;quot;act like you're the first person ever to have a cold,&amp;quot; literally, stating it specifically when his companion asks about it.&lt;br /&gt;
&lt;br /&gt;
This comic was published during a &amp;quot;tripledemic&amp;quot; in the U.S., involving {{w|COVID-19}}, {{w|influenza}}, and {{w|respiratory syncytial virus}} (RSV, a frequent cause of common colds) infections, the latter of which have no cure other than to wait them out with plenty of rest and fluids. It expounds on the finding that, &amp;quot;talking about troublesome events, including events with which one is dissatisfied, may ... result in improved physiological health.&amp;quot;[http://people.uncw.edu/hakanr/documents/whining.pdf]&lt;br /&gt;
&lt;br /&gt;
The title text describes a similar study, but where the {{w|institutional review board}} (IRB) halted the study because the participants were too annoying. This is ironic since they would be expected to whine annoyingly. IRBs are expected to review the ethics of a research project. Whining is not usually considered dangerous,{{citation needed}} but in this case it was presumably so intolerable that they had to put a stop to it.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
:[Hairy sitting on a chair in front of a computer screen. There is an image of Ponytail on the screen speaking.]&lt;br /&gt;
:Ponytail: Well, it's not COVID or flu. Probably one of the other viruses.&lt;br /&gt;
:Hairy: Ughh&lt;br /&gt;
&lt;br /&gt;
:[A zoomed out version of the image, Ponytail cannot be seen]&lt;br /&gt;
:Ponytail: There's not much you can do to speed up recovery other than rest, hydrate, and whine and complain and be a gigantic baby about it. &lt;br /&gt;
&lt;br /&gt;
:[Same as previous panel]&lt;br /&gt;
:Hairy: Whine and complain?&lt;br /&gt;
:Ponytail: Yeah. You need to act like you're the first person ever to have a cold.&lt;br /&gt;
&lt;br /&gt;
:[Hairy lying on a couch wrapped in a blanket, with a lot of paper tissues around]&lt;br /&gt;
:Off-screen voice: Are you '''''sure''''' that's what she said?&lt;br /&gt;
:Hairy: Unbelievable. Here I am, the only person ever to feel bad, and you're '''''doubting''''' me?  &lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Hairy]]&lt;br /&gt;
[[Category:Doctor Ponytail]]&lt;br /&gt;
[[Category:Medicine]]&lt;br /&gt;
[[Category:COVID-19]]&lt;/div&gt;</summary>
		<author><name>172.70.85.244</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1340:_Unique_Date&amp;diff=301266</id>
		<title>1340: Unique Date</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1340:_Unique_Date&amp;diff=301266"/>
				<updated>2022-12-13T18:17:30Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.244: /* Explanation */ Easily sourced link supplied. (And simplified, as Y2K was computer-related, so then this one is too with no broad differences.)&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1340&lt;br /&gt;
| date      = March 10, 2014&lt;br /&gt;
| title     = Unique Date&lt;br /&gt;
| image     = unique_date.png&lt;br /&gt;
| titletext = If our current civilization lasts another 8,000 years, it's probably fair to assume the Long Now Foundation got things right, and at some point we started listening to them and switched to five-digit years.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
In this comic [[Cueball]] is excited about the current date and he states this date (the date the comic was released) as 2014-03-10, with the year first, then the month, then the day of the month. This follows the international standard as defined in the {{W|ISO 8601}} standard. He then continues to point out, to [[Megan]] and another Cueball that this date will never happen again.&lt;br /&gt;
&lt;br /&gt;
The {{W|Gregorian calendar}} is the current way to count time in years, months and days. Since time moves only forward,{{Citation needed}} dates will never repeat. Every date is thus equally unique, even when the digits aren't in a pattern. &lt;br /&gt;
&lt;br /&gt;
Many people do, however, make a big deal about dates when the digits follow an interesting pattern, such as 2000-01-01 or 2012-12-12. They might plan special events on these &amp;quot;unique&amp;quot; days. For instance, [http://articles.latimes.com/2007/jul/08/nation/na-weddings8 2007-07-07] was considered a &amp;quot;lucky&amp;quot; day and had a record number of weddings. This is because humans, in general, are superstitious{{Citation needed}} and like (and recognize) patterns in everyday life, also including patterns in the numbers used for stating dates. But this does not make these dates more unique than any other dates.&lt;br /&gt;
&lt;br /&gt;
Nevertheless, Cueball has made it into  [[:Category:My Hobby|his hobby]] to point this daily uniqueness out, and having to listen to him, stating this fact every day, would be incredibly annoying to his friends.&lt;br /&gt;
&lt;br /&gt;
The title text refers to the {{W|Long Now Foundation}}, who uses [http://blog.longnow.org/02013/12/31/long-now-years-five-digit-dates-and-10k-compliance-at-home/ five-digit years] (e.g. this comic's date would be written &amp;quot;02014-03-10&amp;quot;). This is an effort to encourage people to think in terms of long-term benefits, rather than only the coming years or decades. The {{w|Y2K problem}} was due to using only two digits to store the year, which would have made dates ambiguous when it rolled from 99 back to 00. See also the &amp;quot;{{w|Year 2038 problem}}&amp;quot;. Similarly, the {{w|Maya calendar}} had a repeating cycle of 52 years, and even their &amp;quot;long count&amp;quot; rolled over after 7885 years. As we currently use four-digit years this may cause a {{w|Year 10,000 problem|Y10K problem}}.&lt;br /&gt;
&lt;br /&gt;
The Long Now Foundation designs a [http://longnow.org/clock/ 10,000-year clock] that should be able to run for this long — and in principle, it could display every date up to 9999-12-31. 8000 years from the date of the comic would be 10014 AD  — [[Randall]] jokes that by switching to 5-digit years, we'd prove the Long Now Foundation correct, although of course by this point there would be no other way to show years except by rebooting the calendar.&lt;br /&gt;
&lt;br /&gt;
A previous comic on date formats was [[1179: ISO 8601]].  Randall addresses date formatting confusion again in the title text of [[1467: Email]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball speaking to Megan and another Cueball-like guy.]&lt;br /&gt;
:Cueball: Whoa, it's 2014-03-10! &lt;br /&gt;
:Cueball: Under our system, that date will ''never happen again!!''&lt;br /&gt;
:[Caption below the frame:]&lt;br /&gt;
:My Hobby: Pointing this out every day.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Multiple Cueballs]]&lt;br /&gt;
[[Category:My Hobby]]&lt;br /&gt;
[[Category: Calendar]]&lt;/div&gt;</summary>
		<author><name>172.70.85.244</name></author>	</entry>

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