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		<id>https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=172.70.85.41</id>
		<title>explain xkcd - User contributions [en]</title>
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		<updated>2026-06-24T08:02:23Z</updated>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2906:_Earth&amp;diff=337433</id>
		<title>Talk:2906: Earth</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2906:_Earth&amp;diff=337433"/>
				<updated>2024-03-14T16:14:29Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: &lt;/p&gt;
&lt;hr /&gt;
&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;
I originally read the caption as &amp;quot;how badly ''we'd'' messed up&amp;quot;, which... changes Sagan's tone somewhat. [[Special:Contributions/172.71.155.54|172.71.155.54]] 08:02, 14 March 2024 (UTC)&lt;br /&gt;
&lt;br /&gt;
At first I thought the joke was that the rocket firing had somehow gone so catastrophically badly that the entire Earth had literally been reduced to dust. [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 08:37, 14 March 2024 (UTC)&lt;br /&gt;
:I also had this notion at first. That after the failed burn Earth had been destroyed... But I think not so anymore. So thx explain xkcd. ;-) --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 12:43, 14 March 2024 (UTC)&lt;br /&gt;
&lt;br /&gt;
So, according to explainxkcd, that’s a ''square'' “spacecraft window”?? Why have we never seen a square spacecraft window in any other context, ever? Did Randall screw up that badly in the original comic, or was it a previous explainxkcd editor who screwed up here? [[Special:Contributions/172.70.214.60|172.70.214.60]] 08:58, 14 March 2024 (UTC)&lt;br /&gt;
:I'm not sure what you're on about and why anyone has to have screwed up. Why can't it be a rectangular (we don't know it's square) spacecraft window? [[User:Bischoff|Bischoff]] ([[User talk:Bischoff|talk]]) 09:53, 14 March 2024 (UTC)&lt;br /&gt;
::This is very clearly a triangle shaped window in a very elongated spaceship [[User:Whimsical|Whimsical]] ([[User talk:Whimsical|talk]]) 11:24, 14 March 2024 (UTC)  &lt;br /&gt;
::: Maybe it is part of a huge spider-shaped window? (I home people here will remember that meta-reference to What If) [[Special:Contributions/172.71.94.208|172.71.94.208]] 12:28, 14 March 2024 (UTC)&lt;br /&gt;
::::This picture from the [https://en.wikipedia.org/wiki/Cupola_(ISS_module)#/media/File:Tracy_Caldwell_Dyson_in_Cupola_ISS.jpg Cupola] module of the ISS has trapeze like windows. But the one behind the astronaut could easily have been a rectangle from what can be seen in the picture. So to argue that this window could not have been shot the same is just silly. Of course it was important to the joke that you did not realize it was a window until reading the caption. Also if this space craft has held up to go so far form Earth with living inhabitants it is obviously not a space ship in use today! --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 12:43, 14 March 2024 (UTC)&lt;br /&gt;
:::::There is precedent with the [https://www.sciencephoto.com/media/990677/view/crew-at-window-of-space-shuttle-discovery-2006 Space Shuttle] (aft flight-deck window, others were round, the 'forward flight-deck' ones were of course the main flight/piloting ones with awkward quadrilateral shapes and pesky instrument panels where none are in the comic). The windows in the Shuttle were actually a weight issue (certainly, at first, they were plain (chunky!) glass, and added a ''lot'' of weight to the design.&lt;br /&gt;
:::::Also look at {{w|File:Blue Origin M7.jpg|Blue Origin's capsule}} for more current design that could end up eventually on an orbital/extra-orbital vessel. Although Crew Dragon is more conservative, and {{w|File:MACES in Orion mock-up.jpg|Orion's interior}} looks like it isn't so big (while Starship's eventual window configuration might eventually be vastly more conservative than the Dan Dare/Flash Gordon aesthetic of the concept imagery).&lt;br /&gt;
:::::So... Possible, but depends upon the design needs for the craft (fully space-capable whilst ''intended''  to undergo re-entry, is all we really know). [[Special:Contributions/172.70.90.92|172.70.90.92]] 16:13, 14 March 2024 (UTC)&lt;br /&gt;
&lt;br /&gt;
In my mind is the scene in C.S. Lewis's religious novel Out of the Silent Planet, where an English philologist, Ransom, is abducted by criminals into outer space and meets aliens.  In chapter fifteen, a wise sorn tries to figure out which planet Ransom is from.  Probably Thulcandra, the garbage planet of the Solar System.  Ransom doesn't like the sound of that, but the sorn gets out something that isn't a telescope and he shows Thulcandra to Ransom, and yup, that's us.  Lewis writes it better.  I don't know if Carl Sagan had read this.  --Robert Carnegie rja.carnegie@gmail.com [[Special:Contributions/141.101.99.75|141.101.99.75]] 13:12, 14 March 2024 (UTC)&lt;br /&gt;
:Hoo boy, yep that book (and its sequel) are beyond even Narnia in their religious symbolism (though the later environmentalist movements could definitely find an allegory in them, too, not sure how intended that was, in CSL's time, some time before a practical Gaia Hypothesis/etc). I can imagine Randall knows of the book (though clearly more influenced by Sagan in a direct lineage). Not entirely sure Sagan will have taken interest in that genre, nor taken the above to heart. Probably no more than his genuine scientific and rhetoric interests, which may be sufficient genesis for his own coined meme. But that's just my gut feeling. i.e. Worthy of note, but not directly (or singly-indirectly) connected. [[Special:Contributions/172.70.85.153|172.70.85.153]] 14:20, 14 March 2024 (UTC)&lt;br /&gt;
&lt;br /&gt;
The color for the blue dot seems to be around #B6C8EB. --[[User:1234231587678|1234231587678]] ([[User talk:1234231587678|talk]]) 15:18, 14 March 2024 (UTC)&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2882:_Net_Rotations&amp;diff=335707</id>
		<title>2882: Net Rotations</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2882:_Net_Rotations&amp;diff=335707"/>
				<updated>2024-02-25T09:20:50Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: Undo revision 335702 by 172.71.26.46 (talk) Doesn't matter, either way, but if I don't restore it, someone else will recustomise it. This way, next change more likely to be just removal.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2882&lt;br /&gt;
| date      = January 17, 2024&lt;br /&gt;
| title     = Net Rotations&lt;br /&gt;
| image     = net_rotations_2x.png&lt;br /&gt;
| imagesize = 318x477px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = For decades I've been working off the accumulated rotation from one long afternoon on a merry-go-round when I was eight.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a Fastly Spinning Merry-Go-Round -Please change this comment when editing this page. No mention of title-text or merry-go-rounds, still. Do NOT delete this tag too soon.}}&lt;br /&gt;
This is another one of [[Randall|Randall's]] [[:Category: Tips|Tips]], this time a Spacetime health tip. &lt;br /&gt;
&lt;br /&gt;
This comic may refer to a thing that some people with {{w|OCD}} do, which is to spin around to get rid of &amp;quot;net rotations,&amp;quot; hence the title of this comic. [[Cueball]] (perhaps representing [[Randall]]?) takes this one step beyond the typical person with OCD - he calculates the net rotations each day and spins around at the end of the day to cancel this out. In this case, he would be spinning left 17 rotations to return to zero.&lt;br /&gt;
&lt;br /&gt;
The offered reason for the necessity to do this is a physics joke: the reference to spacetime and to one's &amp;quot;worldline&amp;quot; has to do with relativity and the {{w|Einstein-Cartan theory}}, which is an extension of Einstein's general relativity. The theory suggests a coupling between the intrinsic spin of elementary particles (fermions) and the torsion of spacetime, and this comic appears to humorously extrapolate this idea to even supermolecular structures like a human, telling readers to &amp;quot;cancel out your accumulated turns at the end of each day to avoid worldline torsion&amp;quot;, where in reality, it is highly unlikely the spin on such a large scale would cause any torsion in anyone's worldline, or their path traced by a particle or observer in spacetime.&lt;br /&gt;
&lt;br /&gt;
A mobile device with position and orientation sensing might be able to keep track of one's net rotations, eliminating the need for calculations. One would need only to do one's spinning while monitoring the device to see when it returned to zero.&lt;br /&gt;
&lt;br /&gt;
The caption suggests that this is healthy and necessary/highly recommended to do this. However, most people don’t, and most people are still ok.{{Citation needed}} In fact, xkcd's own characters are perfectly ok with [[162: Angular Momentum|accumulating net rotations]] and [[2679: Quantified Self|similar topological excesses]].&lt;br /&gt;
&lt;br /&gt;
Possibly a reference to the 1966 novel, [//archive.org/details/revolvingboy0000frie The Revolving Boy] by {{w|Gertrude Friedberg}} whose protagonist suffered from being out of correct positioning depending on the number of turns he was forced to make in his everyday life.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is rotating around himself with only one foot on the ground, the other leg raised and bend above the ground and with his arms crossed in front of his chest. There are five circular curves around Cueball from head to legs to indicate this rotary motion. He rotates in front of a whiteboard. On the left of the board there are two vertical helix-like curves going from near the top to the bottom. They are crossing over each other at five points, the first four crossings close to the top, and then one near the bottom. Next to this there are ten rows of illegible scribbles, then a line, then another row of scribbles then a line and at the bottom a row of scribbles which is circled in. There is a large thought bubble above Cueball to indicate that he is thinking to himself while rotating in front of his calculations on the whiteboard.]&lt;br /&gt;
:Cueball (thinking): ...and three lefts for going down the stairwell at work, two rights from cloverleaf interchanges, minus one for the Earth's rotation...&lt;br /&gt;
:Cueball (thinking): Okay, that's a net of 17 right.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
:Spacetime health tip: Remember to cancel out your accumulated turns at the end of each day to avoid worldline torsion.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Astronomy]]&lt;br /&gt;
[[Category:Physics]]&lt;br /&gt;
[[Category:Tips]]&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2846:_Daylight_Saving_Choice&amp;diff=327724</id>
		<title>2846: Daylight Saving Choice</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2846:_Daylight_Saving_Choice&amp;diff=327724"/>
				<updated>2023-11-02T16:02:34Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ That other link was misleading, the section including several countries that *currently* observe DST (but have possibly flipped in and out (and in again)). But the next section summarises &amp;quot;no longer&amp;quot; *plus* &amp;quot;permanent DST&amp;quot; countries!&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2846&lt;br /&gt;
| date      = October 25, 2023&lt;br /&gt;
| title     = Daylight Saving Choice&lt;br /&gt;
| image     = daylight_saving_choice_2x.png&lt;br /&gt;
| imagesize = 231x386px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = I average out the spring and fall changes and just set my clocks 39 minutes ahead year-round.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by TWO CLOCKS SET ONE HOUR APART - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
{{w|Daylight saving time}} (DST) is a practice best known for changing the clock one hour ahead for approximately half the year, typically from spring to autumn. Countries nearer the equator do not see significant changes in daylength between winter and summer and so have rarely had a reason to follow this practice. A {{w|Daylight saving time by country#Proposals to abolish seasonal changes|number of countries}} which used to follow this practice no longer do, and a few now follow year-round DST – however summer-only DST is still used in North America, Europe, and parts of South America, Oceania, Africa and Asia.&lt;br /&gt;
&lt;br /&gt;
Within countries that still follow this practice, there are frequent arguments (mostly during the 2-3 days surrounding the clock change) over the pros and cons of it. [[Black Hat]] is suggesting that everyone should observe or ignore daylight saving time based on their personal opinion. While it might put an end to the arguments (although this itself is debatable) it would clearly cause disharmonious time. This would eventually break the population into at least three categories: those who do not follow daylight saving changes and choose to remain on &amp;quot;daylight&amp;quot; time year round; those who do not follow and choose to stay with &amp;quot;non-daylight&amp;quot; time year round; and those who readily switch to daylight saving time during the prescribed period. There would probably also be a further 'group' who choose to change their clocks on an arbitrary date and time that suits them. So, some people might think it's 8:00 while others think it's 9:00, or vice-versa, but the relative number of people who believe it is each time would shift throughout the year. This would lead to many scheduling errors, delays, and other mistakes, resulting in widespread inconvenience and harm.{{Actual citation needed}}&lt;br /&gt;
&lt;br /&gt;
The joke here is that, while most options in life can be left to individual choice,{{actual citation needed}} clock time is only fully useful if everyone involved agrees on what it means. There may also be a humourous reference to the confusion already often caused around this time when countries do not all begin or end DST on the same date, for example in scheduling calls or online meetings between Europe and North America in the week after publication of this comic.&lt;br /&gt;
&lt;br /&gt;
There are known incidents in which an actual application of Black Hat's proposal&lt;br /&gt;
[https://www.sandiegouniontribune.com/opinion/the-conversation/sdut-daylight-saving-time-sunday-2015mar07-htmlstory.html rendered a terrorist plot void].  One of them is a [https://darwinawards.com/darwin/darwin1999-38.html 1999 Darwin Award Winner]&lt;br /&gt;
&lt;br /&gt;
This comic was posted 4 days before the end of 2023’s daylight saving time in most European countries, and 11 days before the end of 2023's daylight saving time in most of North America. If the proposal is actually instituted at this time, those in the Northern Hemisphere who do not like the fuss of changing their clocks would ''remain'' on DST (as {{w|Sunshine Protection Act|has been actually proposed}}), yet those who are happy with it will fall back to non-DST over the winter months. Presumably, unless anyone changes their minds over the 'winter' period, everyone would actually be back in sync for future 'summer's.&lt;br /&gt;
&lt;br /&gt;
However, the rule (as spoken by Black Hat – not known for being imprecise, or ''unintentionally'' misleading) does not restrict people to merely choosing whether the daylight offset is personally used during DST periods. It instead seems to ''impel'' them to undertake (or not) the statutary changes according to personal convictions, perhaps contrary to what their convictions actually desire. It is left open-ended (&amp;quot;From now on...&amp;quot;) if people from ''both'' mindsets can arbitrarily change their minds in the future. If they can, and act accordingly, this time next year there could be people on three different 'summertime' offsets: zero (change now, but not change later), +1 (steadfast change/no change) and +2 (don't change now, but shift forward in spring). Beyond next year's &amp;quot;fall back&amp;quot; date, there could be people on -1 (fall back, don't spring on, fall back ''further'') and each full year beyond may add additionally positive/negative extremes of offset by those who periodically change their inclinations to only obey ''one'' of the relative imperatives, and a potential {{w|Galton board|standard distribution}} of everyone else between.&amp;lt;!-- Yes, the people who are always/never changing will disproportionately dominate, but this paragraph is getting too long to mention this, let's just assume complete randomness of which path to follow, as each clock-change happens, Ok? --&amp;gt; All this could just be a badly worded explanation of the policy, or even in the wording of the legislation behind it, but the presence of Black Hat at the lectern probably indicates that he fully expects and ''intends'' such a boding and expanding chaos. &lt;br /&gt;
&lt;br /&gt;
The title text suggests splitting the difference by using a constant offset which is the average of the daylight saving offset across days of the year. We do not know if in this system Randall would change his clock for leap year.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Black Hat is speaking at a lectern, flanked by Ponytail and Hairy.]&lt;br /&gt;
:Black Hat: From now on, everyone who likes daylight saving time should change their clocks, and everyone who doesn't, shouldn't.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
:The government finally decides to put an end to all the arguments.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Daylight saving time]]&lt;br /&gt;
[[Category:Comics featuring Black Hat]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Comics featuring Hairy]]&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2553:_Incident_Report&amp;diff=222496</id>
		<title>2553: Incident Report</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2553:_Incident_Report&amp;diff=222496"/>
				<updated>2021-12-11T20:15:59Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2553&lt;br /&gt;
| date      = December 10, 2021&lt;br /&gt;
| title     = Incident Report&lt;br /&gt;
| image     = incident_report.png&lt;br /&gt;
| titletext = Increasing-precision timestamps are the Jaws theme of incident reports.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an OVERLY-PRECISE TEMPORAL SHARK. At approximately 12:29:26.6 p.m. EDT the shark initiated an acceleration, shortly thereafter mouth aperture increased from 0 to 100%. According to CCTV footage the first tooth touched victim 1 at 12:29:30.45 ± 1/29.997th of a second, at 12:29:30.49 blood, at 12:29:30.52 the title text emerged shortly followed by the first {{citation needed}} joke. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
An {{w|incident report}} describes the sequence of events when something goes wrong, including the lead-up as well as the aftermath. This usually involves describing at what time related events happen. In this comic, a report at a {{w|nuclear power plant}} on the day of the comic's publishing starts with particularly vague timestamps (that a package of fireworks arrived &amp;quot;roughly 18 hours prior&amp;quot; to it), then uses approximate minute-level precision (&amp;quot;14:00&amp;quot; and &amp;quot;14:20&amp;quot;, which could reasonably be five minutes off in either direction), then minute-level precision (&amp;quot;14:28&amp;quot;), then second-level precision (&amp;quot;14:29:22&amp;quot; and &amp;quot;14:29:26&amp;quot;).&lt;br /&gt;
&lt;br /&gt;
This suggests that the ''clock'' time is really a proxy for the ''amount'' of time before one specific moment where everything falls apart, and when seconds start appearing, it implies that the recollection is within a few minutes of the disaster. Normally the increased level of precision reflects close monitoring capabilities of the affected systems, reviewing monitoring equipment, such as surveillance camera and microphone recordings, and/or detailed analysis by incident investigators. It may have been sufficient for the resulting enquiry to merely note the prior arrival of the original package, and possibly then read off (whatever remains of) the signing-in logs for the approximate times each member of staff arrives on the scene. At some point, though, the investigation will refer to fully timestamped security recordings, perhaps even eventually frame-by-frame with particular interest in exactly which things touched exactly what other things, in sequence, in order to hopefully learn all the necessary lessons about the incident.&lt;br /&gt;
&lt;br /&gt;
Synchronization of events is important in [https://www.ntsb.gov/investigations/process/Pages/default.aspx incident investigations], so often systems are required to take input from common, relatively precise time references, such as {{w|GPS_disciplined_oscillator|GPS}}, {{w|WWV_(radio_station)|WWV broadcast}}, or cellular telephone systems. For example, an aircraft crash needs {{w|Airport_surveillance_radar|radar}} positioning data synced with [https://www.faa.gov/air_traffic/publications/atpubs/foa_html/chap3_section_4.html voice communications] and {{w|Flight_recorder|flight recorder data}}.&lt;br /&gt;
&lt;br /&gt;
In many situations, incident reports are anonymized as shown to protect the identities of those people involved in the incidents. This is often done to prevent unnecessary blaming of certain individuals, particularly when it hasn't yet been determined whether the incident was negligence or just an accident. &lt;br /&gt;
&lt;br /&gt;
Examples of real-life incident reports with second-level precision timestamps showing the increasing precision around critical moments include:&lt;br /&gt;
* [https://spaceflightnow.com/challenger/timeline/ Explosion] of the Space Shuttle Challenger &lt;br /&gt;
* [https://world-nuclear.org/information-library/safety-and-security/safety-of-plants/appendices/chernobyl-accident-appendix-1-sequence-of-events.aspx Chernobyl explosion]&lt;br /&gt;
&lt;br /&gt;
The report shown cuts off before reaching the actual incident, leaving it to the reader to imagine what happened next. If the birthday cake has lit candles, one possible sequence of events is that a dropped or badly thrown juggling pin could have hit one of them and then rolled over to the fireworks package, thus igniting the package. This would have caused the fireworks to go off underneath the reactor control's console.&lt;br /&gt;
&lt;br /&gt;
Although the comic refers to {{w|Juggling club|juggling &amp;quot;pins&amp;quot;}}, jugglers commonly refer call those props as &amp;quot;clubs.&amp;quot; It is possible Randall is confusing the {{w|Bowling pin|similarly shaped objects}} in 10-pin bowling to juggling clubs. &amp;quot;Pins&amp;quot; are another name for a component of Uranium Carbide type [https://en.wikipedia.org/wiki/Nuclear_fuel#Uranium_carbide nuclear fuel rods], which are involve in the safe control of the nuclear reaction within a nuclear power plant. No sane reactor staff would juggle these complex, heavy and expensive pieces of equipment.{{citation needed}}&lt;br /&gt;
&lt;br /&gt;
The title text refers to the [https://www.youtube.com/watch?v=ZvCI-gNK_y4 theme music] from the 1975 film ''{{w|Jaws (film)|Jaws}}'', which has come to represent impending danger. The theme is well known for the increasing tempo during its intro, which might be paralleled here to the increasingly precise timestamps of the report.&lt;br /&gt;
&lt;br /&gt;
9603120071 is an actual accession number for an [https://adamswebsearch2.nrc.gov/webSearch2/main.jsp?AccessionNumber=9603120071 incident] at San Onofre Nuclear Generating Station in 1996. Four slightly contaminated stray kittens were found, cleaned, and adopted. No clock times were mentioned in the report.&lt;br /&gt;
&lt;br /&gt;
Real-world nuclear power stations have strictly regulated control rooms which would prevent the simultaneous presence of fireworks, juggling and birthday celebrations.{{Citation needed}} There is no East Valley nuclear power plant, but there are two reactor units at the nuclear power plant in Beaver Valley, Pennsylvania.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:Facility: East Valley Nuclear Plant&lt;br /&gt;
:Date: 12/10/2021&lt;br /&gt;
:Report ID: 9603120071&lt;br /&gt;
:Event description: Roughly '''18 hours''' prior to the incident, an Amazon package containing fireworks was mistakenly delivered to the reactor control room and left under the console. &lt;br /&gt;
:The next day, at approximately '''14:00''', Technician A arrived at the facility with a bag containing four juggling pins. At '''14:20''', Technician A entered the control room, and joined Technician B at the console. &lt;br /&gt;
:At '''14:28''', Technician C exited the elevator and approached the control room holding a birthday cake intended for Technician B.&lt;br /&gt;
:At '''14:29:22''', Technician A said &amp;quot;Hey [Technician B], check out this cool trick I learned&amp;quot; while taking out the juggling pins. Technician B turned to look just as, at '''14:29:26''', Technician C entered holding the cake.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel]:&lt;br /&gt;
:You know things are about to get bad when the incident report starts including seconds in the timestamps.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2553:_Incident_Report&amp;diff=222494</id>
		<title>2553: Incident Report</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2553:_Incident_Report&amp;diff=222494"/>
				<updated>2021-12-11T20:14:31Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2553&lt;br /&gt;
| date      = December 10, 2021&lt;br /&gt;
| title     = Incident Report&lt;br /&gt;
| image     = incident_report.png&lt;br /&gt;
| titletext = Increasing-precision timestamps are the Jaws theme of incident reports.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an OVERLY-PRECISE TEMPORAL SHARK. At approximately 12:29:26.6 p.m. EDT the shark initiated an acceleration, shortly thereafter mouth aperture increased from 0 to 100%. According to CCTV footage the first tooth touched victim 1 at 12:29:30.45 ± 1/29.997th of a second, at 12:29:30.49 blood, at 12:29:30.52 the title text emerged shortly followed by the first {{citation needed}} joke. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
An {{w|incident report}} describes the sequence of events when something goes wrong, including the lead-up as well as the aftermath. This usually involves describing at what time related events happen. In this comic, a report at a {{w|nuclear power plant}} on the day of the comic's publishing starts with particularly vague timestamps (that a package of fireworks arrived &amp;quot;roughly 18 hours prior&amp;quot; to it), then uses approximate minute-level precision (&amp;quot;14:00&amp;quot; and &amp;quot;14:20&amp;quot;, which could reasonably be five minutes off in either direction), then minute-level precision (&amp;quot;14:28&amp;quot;), then second-level precision (&amp;quot;14:29:22&amp;quot; and &amp;quot;14:29:26&amp;quot;).&lt;br /&gt;
&lt;br /&gt;
This suggests that the ''clock'' time is really a proxy for the ''amount'' of time before one specific moment where everything falls apart, and when seconds start appearing, it implies that the recollection is within a few minutes of the disaster. Normally the increased level of precision reflects close monitoring capabilities of the affected systems, reviewing monitoring equipment, such as surveillance camera and microphone recordings, and/or detailed analysis by incident investigators. It may have been sufficient for the resulting enquiry to merely note the prior arrival of the original package, and possibly then read off (whatever remains of) the signing-in logs for the times of each member of staff arrives on the scene. At some point, though, the investigation will refer to fully timestamped security recordings, perhaps even eventually frame-by-frame with particular interest in exactly which things touched exactly what other things, in sequence, in order to hopefully learn all the necessary lessons about the incident.&lt;br /&gt;
&lt;br /&gt;
Synchronization of events is important in [[https://www.ntsb.gov/investigations/process/Pages/default.aspx incident investigations]], so often systems are required to take input from common, relatively precise time references, such as {{w|GPS_disciplined_oscillator|GPS}}, {{w|WWV_(radio_station)|WWV broadcast}}, or cellular telephone systems. For example, an aircraft crash needs {{w|Airport_surveillance_radar|radar}} positioning data synced with [https://www.faa.gov/air_traffic/publications/atpubs/foa_html/chap3_section_4.html voice communications] and {{w|Flight_recorder|flight recorder data}}.&lt;br /&gt;
&lt;br /&gt;
In many situations, incident reports are anonymized as shown to protect the identities of those people involved in the incidents. This is often done to prevent unnecessary blaming of certain individuals, particularly when it hasn't yet been determined whether the incident was negligence or just an accident. &lt;br /&gt;
&lt;br /&gt;
Examples of real-life incident reports with second-level precision timestamps showing the increasing precision around critical moments include:&lt;br /&gt;
* [https://spaceflightnow.com/challenger/timeline/ Explosion] of the Space Shuttle Challenger &lt;br /&gt;
* [https://world-nuclear.org/information-library/safety-and-security/safety-of-plants/appendices/chernobyl-accident-appendix-1-sequence-of-events.aspx Chernobyl explosion]&lt;br /&gt;
&lt;br /&gt;
The report shown cuts off before reaching the actual incident, leaving it to the reader to imagine what happened next. If the birthday cake has lit candles, one possible sequence of events is that a dropped or badly thrown juggling pin could have hit one of them and then rolled over to the fireworks package, thus igniting the package. This would have caused the fireworks to go off underneath the reactor control's console.&lt;br /&gt;
&lt;br /&gt;
Although the comic refers to {{w|Juggling club|juggling &amp;quot;pins&amp;quot;}}, jugglers commonly refer call those props as &amp;quot;clubs.&amp;quot; It is possible Randall is confusing the {{w|Bowling pin|similarly shaped objects}} in 10-pin bowling to juggling clubs. &amp;quot;Pins&amp;quot; are another name for a component of Uranium Carbide type [https://en.wikipedia.org/wiki/Nuclear_fuel#Uranium_carbide nuclear fuel rods], which are involve in the safe control of the nuclear reaction within a nuclear power plant. No sane reactor staff would juggle these complex, heavy and expensive pieces of equipment.{{citation needed}}&lt;br /&gt;
&lt;br /&gt;
The title text refers to the [https://www.youtube.com/watch?v=ZvCI-gNK_y4 theme music] from the 1975 film ''{{w|Jaws (film)|Jaws}}'', which has come to represent impending danger. The theme is well known for the increasing tempo during its intro, which might be paralleled here to the increasingly precise timestamps of the report.&lt;br /&gt;
&lt;br /&gt;
9603120071 is an actual accession number for an [https://adamswebsearch2.nrc.gov/webSearch2/main.jsp?AccessionNumber=9603120071 incident] at San Onofre Nuclear Generating Station in 1996. Four slightly contaminated stray kittens were found, cleaned, and adopted. No clock times were mentioned in the report.&lt;br /&gt;
&lt;br /&gt;
Real-world nuclear power stations have strictly regulated control rooms which would prevent the simultaneous presence of fireworks, juggling and birthday celebrations.{{Citation needed}} There is no East Valley nuclear power plant, but there are two reactor units at the nuclear power plant in Beaver Valley, Pennsylvania.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:Facility: East Valley Nuclear Plant&lt;br /&gt;
:Date: 12/10/2021&lt;br /&gt;
:Report ID: 9603120071&lt;br /&gt;
:Event description: Roughly '''18 hours''' prior to the incident, an Amazon package containing fireworks was mistakenly delivered to the reactor control room and left under the console. &lt;br /&gt;
:The next day, at approximately '''14:00''', Technician A arrived at the facility with a bag containing four juggling pins. At '''14:20''', Technician A entered the control room, and joined Technician B at the console. &lt;br /&gt;
:At '''14:28''', Technician C exited the elevator and approached the control room holding a birthday cake intended for Technician B.&lt;br /&gt;
:At '''14:29:22''', Technician A said &amp;quot;Hey [Technician B], check out this cool trick I learned&amp;quot; while taking out the juggling pins. Technician B turned to look just as, at '''14:29:26''', Technician C entered holding the cake.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel]:&lt;br /&gt;
:You know things are about to get bad when the incident report starts including seconds in the timestamps.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2553:_Incident_Report&amp;diff=222483</id>
		<title>Talk:2553: Incident Report</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2553:_Incident_Report&amp;diff=222483"/>
				<updated>2021-12-11T15:50:41Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: The birthday cake, and the kittens&lt;/p&gt;
&lt;hr /&gt;
&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;
It seems that &amp;quot;juggling pins&amp;quot; is also a common term for them. Many websites selling them call them pins. Wikipedia says they &amp;quot;sometimes are referred to as pins or batons by non-jugglers&amp;quot;. Presumably the technician writing the IR is not a juggler. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 23:00, 10 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
I'm going to assume that 12/10/2021 is the [https://xkcd.com/1179/ flawed American date system]? [[User:Kev|Kev]] ([[User talk:Kev|talk]]) 23:01, 10 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
You have read The Leaky Establishment. Dave Langford always claims he did not smuggle nuclear material out, but will admit to a filing cabinet. [[User:Arachrah|Arachrah]] ([[User talk:Arachrah|talk]]) 23:09, 10 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
''strictly regulated control rooms which would prevent the simultaneous presence of fireworks, juggling and birthday celebrations'' - I would hope that in control room of nuclear power plants, fireworks, juggling and birthday celebrations can't be present AT ALL, not just simultaneously ... -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 23:15, 10 December 2021 (UTC)&lt;br /&gt;
: You might think that, but I'm basing my edits on that documentary of modern American life entitled &amp;quot;The Simpsons&amp;quot; [[User:Kev|Kev]] ([[User talk:Kev|talk]]) 11:23, 11 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
: As an operator at a nuclear power plant I can tell you that birthday cake is not infrequently present in the control room. But yeah, juggling would be quite discouraged, and security would not be happy if you tried to bring fireworks into the Protected Area. Also, for the record, I have never heard the fuel rods called &amp;quot;pins&amp;quot; (though that may be regional), and while the description of fuel rods here isn't *technically* false I think that &amp;quot;control rods&amp;quot; are what the writer was attempting to describe. (The design of the fuel rods does of course effect neutron flux et al, but they are not positionable or anything like that so to say that they &amp;quot;control reaction speed&amp;quot; is rather misleading.) --[[Special:Contributions/172.70.126.65|172.70.126.65]] 12:23, 11 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
It's perhaps worth noting that the comic was posted within hours of Amazon in real life releasing an incident report for a major outage of one of their server locations which affected many of their services, perhaps explaining how an Amazon delivery worker accidentally delivered fireworks to the wrong location. [[Special:Contributions/172.70.110.173|172.70.110.173]] 02:36, 11 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
It's never specified to be a ''birthday'' cake, but I don't know how to put that in the explanation. [[Special:Contributions/172.70.175.80|172.70.175.80]] 03:05, 11 December 2021 (UTC)Bumpf&lt;br /&gt;
*The third paragraph says &amp;quot;a birthday cake intended for Technician B&amp;quot;. --[[Special:Contributions/172.70.130.205|172.70.130.205]] 04:55, 11 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
Noting that Randall is not above drilling down even to decimals (or subunits) of seconds as needed. Relarivistic Baseball and Vlass Half Empty come immediately to mind. But I'm not sure if he's gone down the Xeno's Paradox route of starting off fairly long-scale and as the finale approaches cutting down the gap between each itemisation and the next to finer and finer distictions. Wouldn't be surprised if he did, but I'd have to search for it. &lt;br /&gt;
[[Special:Contributions/172.70.85.227|172.70.85.227]] 03:45, 11 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
I don't think that &amp;quot;false minute-level precision&amp;quot; is correct here. In fact, the next more precise-looking times might actually be false precision: go to https://en.wikipedia.org/wiki/False_precision to see what I mean. I don't know how to express the changing precision indications, however . . . . [[Special:Contributions/172.70.126.87|172.70.126.87]] 11:32, 11 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
I suppose '' [https://en.m.wikipedia.org/wiki/Seconds_from_Disaster Seconds From Disaster]'' is just the kind of show this would end up on... [[User:IByte|IByte]] ([[User talk:IByte|talk]]) 15:21, 11 December 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
(1) Although anonymous, it appears that we know it's Technician B's birthday which is quite personally identifiable and (2) I want more follow up about the kittens, for public safety.  We could be looking at a new animal martial arts franchise but I can't decide if that's the best case or worst.  [[Special:Contributions/172.70.85.41|172.70.85.41]] 15:50, 11 December 2021 (UTC) Robert Carnegie rja.carnegie@gmail.com&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2549:_Edge_Cake&amp;diff=222308</id>
		<title>2549: Edge Cake</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2549:_Edge_Cake&amp;diff=222308"/>
				<updated>2021-12-09T13:33:44Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ To be pedantic.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2549&lt;br /&gt;
| date      = December 1, 2021&lt;br /&gt;
| title     = Edge Cake&lt;br /&gt;
| image     = edge_cake.png&lt;br /&gt;
| titletext = Every time IERS adds or removes a leap second, they send me a birthday cake out of superstition.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by FRINGE FRUITCAKE &amp;amp;ndash; Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
[[Megan]]—possibly an {{w|IERS}} (International Earth Rotation and Reference Systems) agent—wishes Emily, represented as [[Hairbun]], Happy Birthday. This prompts a confused [[Cueball]] to ask if her birthday was sometime last month. Emily explains that she was born over the North Pole in a plane, meaning that she was born in every timezone at once. Technically though this is false, as there are some timezones (such as {{w|Nepal Standard Time|UTC+5:45}}) that are not represented at the north pole. Except for the one hour before it's midnight at the International Date Line, the date in eastern time zones is one day ahead of western time zones, so Emily would have been born on two days at once. &lt;br /&gt;
&lt;br /&gt;
She also says that it was February 29th (presumably it was also February 28 or March 1 in some time zones). February 29th only happens at most once every four years in the Gregorian calendar, adding to the confusion - people born on February 29th often celebrate their non-leap-year birthdays on arbitrary days (or  {{w|The_Pirates_of_Penzance#Synopsis|not at all}}). Normally {{w|Birth aboard aircraft and ships|one could simply use the time zone of the city the airplane took off from}}, but the airline company was changing ownership from one country to another at the time, so this option has apparently been ruled out. This is not terribly logical however, since contracts transferring ownership usually specify an exact time (commonly one minute before or after midnight in a specific time zone to avoid confusion on which day midnight is in) to come into effect.  Regardless of which time zone(s) she was in when she was born this is an absolute time and if she was born before it she would have been born in an aircraft of the first country and if after it in an aircraft of the second country. Alternately, the time zone of the city the aircraft took off from doesn't change even if nationality of the plane changes in midair, so that should have still been an option.&lt;br /&gt;
&lt;br /&gt;
The punchline is that rather than try to identify the correct birthday for Emily, the {{w|BIPM}} has decided to let her have birthdays whenever she wants.  This doesn't make much sense, however. As noted above even if she was born in every time zone at once it could only have been on one of two days (February 29th, plus either February 28th or March 1st). Since it is common for people born on February 29th to celebrate on February 28th in non-leap years, it would have been trivial to pick the non-leap day present in some of the time zones (either February 28th or March 1st) and declare it Emily's birthday.&lt;br /&gt;
&lt;br /&gt;
In real life researchers in the Arctic at or near the North Pole use {{w|Coordinated Universal Time}} as the [http://www.thoughtco.com/the-north-pole-1435098 local time standard] by convention, to avoid this exact problem. Thus it could have been said that Emily was born on the date that it was at that time in UTC. Furthermore, it is extremely unlikely that she would have been born at the exact instant the plane was over the north pole, indeed, it is unlikely that the plane even traveled over the exact pole, as opposed to a few miles or even feet to either side of it. With modern positioning equipment such as GPS it should have been possible to determine which time zone the plane was in when she was born. Even in the impossibly unlikely event that she was directly above the pole at the instant of her birth, at jetliner speeds the plane was travelling about ten miles per minute, so a reasonable delay of even seconds in declaring &amp;quot;time of birth&amp;quot; would have placed the plane and her clearly in one time zone.&lt;br /&gt;
&lt;br /&gt;
Both the comic title and Cueball's final line are puns on &amp;quot;{{w|edge case}}&amp;quot;, an engineering term referring to situations or conditions that are unusual in a way likely to cause problems unless specifically accounted for. Edge pieces are generally only important with sheet goods (brownies sheet cakes, etc), which are typically cut into pieces creating a difference between pieces originating on the edge and pieces originating from the center. Since the sides of a cake are often frosted, an edge piece has two faces covered in frosting and a corner piece has three, while a center piece only has one. Depending upon your relative preferences between the surface (often icing over marzipan) and core body of the cake (which can be fruitcake, or some variety of spongecake, etc, but not actually obvious which until the cake is cut), it being an edge-faced slice can be considered a bonus. Cueball certainly seems to appreciate this.&lt;br /&gt;
&lt;br /&gt;
The title text states that the {{w|IERS}} sends Emily a cake every time they add or remove a leap second, out of superstition (perhaps Megan is delivering that cake). The International Earth Rotation and Reference Systems Service is in charge of global time standards. It occasionally adds one leap-second to {{w|Coordinated Universal Time}} to adjust for changes in the rotation speed of the Earth.&lt;br /&gt;
&lt;br /&gt;
The comic might also be a modern version of the ''{{w|SS Warrimoo}}'', a passenger liner that reportedly crossed the international date line at the equator on midnight Dec. 31, 1899. This would have placed her bow in the Southern Hemisphere in summer on 1 January 1900, her stern in the Northern Hemisphere in winter on 31 December 1899. She would therefore have been simultaneously in two different seasons (winter and summer), in two different hemispheres, on two different days, in two different months, in two different years, in two different decades, {{w|Century#Start_and_end_of_centuries|possibly}} in two different centuries.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
Hairbun was last named &amp;quot;Emily&amp;quot; in [[788: The Carriage]]. More specifically, that version of Hairbun represented {{w|Emily Dickinson}}, a real, historical person who had no such issues regarding her birthday.{{Citation needed}}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Megan is walking towards Cueball and Emily (who resembles Hairbun), holding a cake.]&lt;br /&gt;
:Megan: Happy birthday, Emily!&lt;br /&gt;
:Cueball: Wait, wasn't that last month? When's your birthday, anyways?&lt;br /&gt;
:Emily: It's complicated.&lt;br /&gt;
&lt;br /&gt;
:[A diagram of a flight path over the North Pole, with meridian lines radiating out from the center. Emily's dialogue appears above the diagram, but she herself does not appear in this panel.]&lt;br /&gt;
:Emily: My mom went into labor on an arctic international flight that diverted directly over the North Pole.&lt;br /&gt;
:Emily: I was born in every time zone at once.&lt;br /&gt;
&lt;br /&gt;
:[With Megan standing behind her, Emily holds out a plate of cake to Cueball.]&lt;br /&gt;
:Emily: It was also February 29th, and the airline was just changing ownership between countries.&lt;br /&gt;
:Emily: The International Bureau of Weights and Measures finally issued a declaration that it's my birthday whenever I want.&lt;br /&gt;
:Emily: Cake?&lt;br /&gt;
:Cueball: Nice, it's all edge pieces.&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:Comics featuring Hairbun]]&lt;br /&gt;
[[Category:Time]]&lt;br /&gt;
[[Category:Engineering]]&lt;br /&gt;
[[Category:Science]]&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2550:_Webb&amp;diff=222234</id>
		<title>2550: Webb</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2550:_Webb&amp;diff=222234"/>
				<updated>2021-12-08T17:15:25Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: Trying out some better description.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2550&lt;br /&gt;
| date      = December 3, 2021&lt;br /&gt;
| title     = Webb&lt;br /&gt;
| image     = webb.png&lt;br /&gt;
| titletext = Each one contains a chocolate shaped like a famous spacecraft and, for the later numbers, a pamphlet on managing anxiety.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by the JACOB WILLIAMS PLANETARY MICROSCOPE - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic depicts an {{w|advent calendar}} geared toward astronomers anticipating the launch of the {{w|James Webb Space Telescope}}.&lt;br /&gt;
&lt;br /&gt;
The James Webb Space Telescope is (currently, but after [[2014: JWST Delays|many prior delays]]) scheduled to be launched on the 22nd of December. Christmas will indeed come early for astronomers should the launch be successful.&lt;br /&gt;
&lt;br /&gt;
A normal advent calendar marks the days until Christmas by allowing miniature doors to be opened, or other means of revealing some treat/picture. This is often from the 1st of the month until the 'big reveal' on the 24th or 25th, though other schemes may exist in other cultures. This particular calendar features 18 hexagonal features, intended to be sequentially accessed over several days, in the same layout as the 18 gold-beryllium mirror segments designed to fold out to form the JWST's primary mirror. The first door is on the 5th, two days after this comic's publication date, making the last on the 22nd, the 'Big Day'.&lt;br /&gt;
&lt;br /&gt;
Cueball's question could be interpreted two ways: Cueball doesn't know about JWST, so he is asking why this advent calendar ends before Christmas (and possibly fearing this calendar is similar to the one in [[1245: 10-Day Forecast]]); or Cueball does know about JWST and its history of delays, so he is asking why the calendar ends on 22 when there is no certainty in that launch date (and also implying that he expects it to be delayed). &lt;br /&gt;
&lt;br /&gt;
December 22 is also the day after the northern hemisphere winter solstice. The end of the world was famously predicted for the winter solstice in [[998: 2012|2012]].&lt;br /&gt;
&lt;br /&gt;
The title text references the fact that chocolates in advent calendars are often molded into different shapes, and the fact that the later numbers have a &amp;quot;pamphlet on managing anxiety&amp;quot; is probably supposed to quell the impeding fear that the launch could be delayed further or go wrong. The telescope's launch was initially planned for 2007, but due to various redesigns, financial issues, accidents, flaws, and the {{w|COVID-19 pandemic}}, the launch date was pushed back to 2011, then 2013, 2018, 2020, May 2021, October 2021, and finally to the current launch date in December 2021. It may also allude to post-launch concerns; even if the launch goes well, there will still be nervousness about the [https://www.youtube.com/watch?v=v6ihVeEoUdo| complex 160-day process] in which the JWST reaches its intended observation point, many subsystems are unfolded/deployed, and the instrument passes its final calibrations. There is effectively no way to rescue/repair this expensive piece of equipment should anything be amiss, unlike the {{w|Hubble Space Telescope}}, which was visited five times by {{w|Space Shuttles}} to remedy and enhance various features. (There exist issues with even Hubble that cannot currently be considered repairable without the Shuttles or any proven replacement, and the JWST will be located far beyond Hubble's operational orbit in a place much more difficult to get to.)&lt;br /&gt;
&lt;br /&gt;
The JWST has been referenced previously in [[1730: Starshade]], [[2014: JWST Delays]], and [[2447: Hammer Incident]], as well as indirectly in [[975: Occulting Telescope]] and [[1461: Payloads]].&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball and Ponytail are looking at an advent calendar hanging on a wall in front of them. The advent calendar is loosely tiled with 18 smaller hexagons, numbered from 5 to 22 in no clear order or pattern. They are regularly arranged into a larger hexagonal shape and of the five rows, there are three in the top and bottom ones, as also with each diagonal side. There are four in each of the other rows, offset symmetrically, but with a gap where a fifth could have been in the centre of the middle row.]&lt;br /&gt;
:Cueball: The hexagons are nice.&lt;br /&gt;
:Cueball: But why does it end at 22?&lt;br /&gt;
:Numbers: &lt;br /&gt;
      5  22  10 &lt;br /&gt;
   11  15  19  17&lt;br /&gt;
 14   7 none 13   8&lt;br /&gt;
    9  16   6  20&lt;br /&gt;
      8  21  12&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
:Astronomer Advent Calendar&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Christmas]]&lt;br /&gt;
[[Category:Calendar]]&lt;br /&gt;
[[Category:Telescopes]]&lt;br /&gt;
[[Category:Astronomy]]&lt;br /&gt;
[[Category:Food]] &amp;lt;!-- chocolate title text--&amp;gt;&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1842:_Anti-Drone_Eagles&amp;diff=222125</id>
		<title>1842: Anti-Drone Eagles</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1842:_Anti-Drone_Eagles&amp;diff=222125"/>
				<updated>2021-12-06T19:50:35Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ The games with the {{citation needed}}, that I can see, left an extra paragraph-gap.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1842&lt;br /&gt;
| date      = May 26, 2017&lt;br /&gt;
| title     = Anti-Drone Eagles&lt;br /&gt;
| image     = anti_drone_eagles.png&lt;br /&gt;
| titletext = It's cool, it's totally ethical--they're all programmed to hunt whichever bird of prey is most numerous at the moment, so they leave the endangered ones alone until near the end.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
Law enforcement and security agencies often use [http://www.bbc.com/news/av/world-europe-35750816/eagles-trained-to-take-down-drones birds of prey] [https://www.washingtonpost.com/news/worldviews/wp/2017/02/21/terrorists-are-building-drones-france-is-destroying-them-with-eagles/ to combat drones] flying unlawfully over restricted sites. Probably not as cost effective as using eagles to transport golden rings or bearers thereof to volcanoes in foreign lands. This is often more cost effective than using technological means (such as scramblers and counter-drones) and safer for the public than using conventional weaponry (such as shotguns).&lt;br /&gt;
&lt;br /&gt;
Eagles, being predators, have natural tendencies to attack the central components of drones while avoiding the sharp and spinny bits.&lt;br /&gt;
&lt;br /&gt;
[[Cueball]] argues that this is unethical as it forces rare animals to put their lives at risk, and compares it to using police dogs for traffic control, which people would generally frown upon. &lt;br /&gt;
&lt;br /&gt;
Effectiveness depends upon the conditions of use. Obviously eagles can't be used everywhere that drones are restricted, but they are often effectively used where ground security is also present to identify and arrest those that might be unlawfully flying the drones, so they can't indefinitely replenish their hardware. The first paragraph has links to real life examples. Not only would it be unethical, but also ineffective. The supply of Eagles is rather limited, and there are biological limits to how fast it can be replenished, whereas more drones can be created very quickly to replace those that are destroyed.  Traffic control dogs would be similarly ineffective, as dogs would struggle to run as fast as a speeding motorcycle, and would be powerless to stop the motorcycle even if they could.  &lt;br /&gt;
&lt;br /&gt;
[[Megan]] thinks both ideas (eagles and dogs) sound cool, but she understands the ethical argument against using them for traffic control.&lt;br /&gt;
&lt;br /&gt;
[[Black Hat]], on the other hand, goes a step further and says that he has created a drone that hunts the eagles, flipping the premise from “anti-drone eagles” to “anti-eagle drones”. In the title text, he continues that is ethical because they (only the title text mentions that there are several of such drones) only target the most populous species first, although they will eventually eradicate the endangered ones once they bring down the number of all birds of prey (note that this implies that he wants to make all birds of prey extinct or endangered). He seems to {{tvtropes|ComicallyMissingThePoint|miss the point}} that it is not merely the relative number of birds that creates the ethical problem, but the fact that animals' lives are being put at direct risk by humans. His construction of the anti-eagle drone may be simply for the point of making the eagles' goals not only dangerous, but also entirely ineffective. This is probably not an opposition to privacy but merely his trademark [[72: Classhole|classholery]] in action.&lt;br /&gt;
&lt;br /&gt;
Nevertheless, Black Hat raises a crucial point in {{w|ecology}}: There are generalist and specialist predators (as well as herbivores). A specialist hunts or eats only one species (e.g. the {{w|koala}} eats only {{w|eucalyptus}}), while a generalist hunts or eats the most available food. Thus, a generalist often spares species that have become rare due to overhunting, disease or famine. A generalist predator (or herbivore) thus manages the wildlife, and a healthy population of generalists is almost always beneficial. Now, if Black Hat creates a drone that hunts the most available species, he gets the right idea (a food generalist manages wildlife), but gets the other one seriously wrong: Eagles are already doing their job as generalists, and as predatory birds are not so abundant, a generalist that feeds on predatory birds would need to have a very large territory. And as drones cannot reproduce yet and do not need to hunt as an energy source, releasing a drone to fulfil an ecological role would not make any sense. How does the drone know it has hunted enough eagles? Does the eagle-hunting drone feel hunger and decide to hunt elsewhere after reducing the number of local eagles, or does it just hibernate?&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Black Hat, Cueball and Megan are standing and talking.]&lt;br /&gt;
:Cueball: Everyone loves these eagles that take down drones, but... I dunno.&lt;br /&gt;
:Megan: You gotta admit, it's pretty cool.&lt;br /&gt;
&lt;br /&gt;
:[Close-up of Cueball.]&lt;br /&gt;
:Cueball: Yeah, but... training rare animals to hurl themselves at whirling machinery can only get us so far, you know?&lt;br /&gt;
&lt;br /&gt;
:[In a frame-less panel the setting is back to that of the first panel.]&lt;br /&gt;
:Cueball: At some point, it's like releasing police dogs onto freeways to attack speeding motorcycles.&lt;br /&gt;
:Megan: Also cool, but I see your point.&lt;br /&gt;
&lt;br /&gt;
:[Black Hat lifts his hand and Cueball turns his face towards him.]&lt;br /&gt;
:Black Hat: Plus, I just finished my autonomous drone that hunts eagles.&lt;br /&gt;
:Cueball: Man, '''''you''''' are an entirely separate class of problem.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Black Hat]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:Drones]]&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2550:_Webb&amp;diff=222013</id>
		<title>Talk:2550: Webb</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2550:_Webb&amp;diff=222013"/>
				<updated>2021-12-04T04:50:10Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: &lt;/p&gt;
&lt;hr /&gt;
&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;
&lt;br /&gt;
Ah, without edit-conflict being indicated (probably because subsequent new paragraphs could be considered as not 'treading on the toes' of the first one posted), I seem to have added repetitious information. Also I can see that I misbalanced the paragraph sizes as I went into increasingly more detail as I got into the edit. Was going to go back to wikilink/fix/etc, but I should probably leave it to a new eye to better re-edit the whole think 'nicer', taking how much or little inspiration the current mess of text might provide. Have fun! [[Special:Contributions/172.70.85.41|172.70.85.41]] 04:49, 4 December 2021 (UTC)&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2550:_Webb&amp;diff=222012</id>
		<title>Talk:2550: Webb</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2550:_Webb&amp;diff=222012"/>
				<updated>2021-12-04T04:49:50Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: &lt;/p&gt;
&lt;hr /&gt;
&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;
&lt;br /&gt;
Ah, without exit-conflict being indicated (probably because subsequent new paragraphs could be considered as not 'treading on the toes' of the first one posted), I seem to have added repetitious information. Also I can see that I misbalanced the paragraph sizes as I went into increasingly more detail as I got into the edit. Was going to go back to wikilink/fix/etc, but I should probably leave it to a new eye to better re-edit the whole think 'nicer', taking how much or little inspiration the current mess of text might provide. Have fun! [[Special:Contributions/172.70.85.41|172.70.85.41]] 04:49, 4 December 2021 (UTC)&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2546:_Fiction_vs_Nonfiction&amp;diff=221566</id>
		<title>Talk:2546: Fiction vs Nonfiction</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2546:_Fiction_vs_Nonfiction&amp;diff=221566"/>
				<updated>2021-11-29T22:25:04Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: &lt;/p&gt;
&lt;hr /&gt;
&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;
Doris Kearns Goodwin also mentioned in https://xkcd.com/2160/ [[Special:Contributions/172.70.174.35|172.70.174.35]] 05:51, 25 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
Why &amp;quot;Boba Fett's Gadgets and How He Got Them&amp;quot; is not described? It is clearly a mix of sort-of-facts - description of Fett's gadgets and how artists designed them, and fiction stories of how he got them.{{unsigned}}&lt;br /&gt;
: well, it could also be a list of what the gadgets are in-universe and the stories of how he got them, which is non-fiction in the star wars universe but fiction in real life. [[Special:Contributions/172.70.34.91|172.70.34.91]] 16:47, 25 November 2021 (UTC)Bumpf&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
(Edit comment) &amp;quot;Bobba Fett's armor is definitely Beskar, as shown in the Mandalorian season 2. However, there are conflicting official star wars publications that mention his armor being durasteel. The commonly accepted solution is that it is an alloy of both.&amp;quot;... Or a composite laminate/overlay. Like Stormtrooper armor has a layer of Explodium on the inside, hence how Rebel gunshots are so incapacitating to them. [[Special:Contributions/172.70.85.155|172.70.85.155]] 09:25, 25 November 2021 (UTC)&lt;br /&gt;
*Nope, they're made of &amp;quot;implodium&amp;quot; otherwise someone else might get hurt. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 16:02, 25 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
Could we call it Meta fiction or Meta nonfiction? [[Special:Contributions/172.70.178.161|172.70.178.161]]&lt;br /&gt;
&lt;br /&gt;
What's the context here—a library? And has anybody asked Doris Kearns Goodwin whether she has such a work in some stage of preparation? [[User:Yngvadottir|Yngvadottir]] ([[User talk:Yngvadottir|talk]]) 22:28, 25 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Fictional&amp;quot; is very hard word to use. Consider the phrase &amp;quot;fictional character&amp;quot;. Character means a person in a novel, play, film etc. If the novel is fiction, the person is also fictional ... but it is fictional character? What's fictional on it being a character (fact) in real (fact) book? Or another example: Red Book of Westmarch. This is real book in fictional universe. Is it fictional book? But wait, its content is basically same as Hobbit and Lord of the Rings, real books in real universe. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 23:33, 25 November 2021 (UTC)&lt;br /&gt;
:Hadn't read this before making ''my'' edit in one spot, of using &amp;quot;Fictitious&amp;quot;. Maybe that helps, maybe it doesn't. [[Special:Contributions/162.158.159.29|162.158.159.29]] 03:15, 26 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
:Also, in a fictional story featuring a version of a real person, is the person in that story real or fictional? [[Special:Contributions/162.158.159.43|162.158.159.43]] 17:52, 26 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
:The Explain XKCD commentary refers to &amp;quot;the original Star Wars&amp;quot; of 1977 vintage, however the first released Star Wars media item was a book, in 1976. The film came later. From Wikipedia, Star Wars page: &amp;quot;The novelization of the film was published as Star Wars: From the Adventures of Luke Skywalker in December 1976, six months before the film was released. The credited author was George Lucas, but the book was revealed to have been ghostwritten by Alan Dean Foster. Marketing director Charles Lippincott secured the deal with Del Rey Books to publish the novelization in November 1976. By February 1977, a half million copies had been sold.[7]&amp;quot; So technically the &amp;quot;original Star Wars&amp;quot; is 1976 and was not a film. Reference to 1977 original should state &amp;quot;original film&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
I actually saw Randall at a Doris Kearns Goodwin event in Western Massachusetts the Sunday before this!{{unsigned}}&lt;br /&gt;
: Related to this... I'm not the [https://www.explainxkcd.com/wiki/index.php?title=2546:_Fiction_vs_Nonfiction&amp;amp;curid=24581&amp;amp;diff=221564&amp;amp;oldid=221408 person who got edited out here] but I think the intention by them was that DKG certainly is real, while I assume the editer-out thought it was the how-and-why as a whole that was 'questioned'. Still, if it's confusing, yeah maybe best not given the faux-CN tag. [[Special:Contributions/172.70.85.41|172.70.85.41]] 22:25, 29 November 2021 (UTC)&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2546:_Fiction_vs_Nonfiction&amp;diff=221373</id>
		<title>2546: Fiction vs Nonfiction</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2546:_Fiction_vs_Nonfiction&amp;diff=221373"/>
				<updated>2021-11-25T21:57:33Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ Avoids any implication that we know that Doris is still living as of Boba's time (or, in fact now, a long time later).&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2546&lt;br /&gt;
| date      = November 24, 2021&lt;br /&gt;
| title     = Fiction vs Nonfiction&lt;br /&gt;
| image     = fiction_vs_nonfiction.png&lt;br /&gt;
| titletext = The real challenge is how to file Boba Fett's biography of Doris Kearns Goodwin.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by A FICTIONAL DORIS KEARNS GOODWIN WATCHING STAR WARS ON A DURASTEEL-BESKAR TV- Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
[[Cueball]] is asking [[Ponytail]] and [[White Hat]] to classify different ''{{w|Star Wars}}'' books and movies as fiction or nonfiction.  (Perhaps he is working at a library or bookstore, or sorting a personal collection.) ''Star Wars'' as a whole is a multimedia franchise, which includes films, TV series, novels, etc, but often singularly refers to {{w|Star Wars (film)|the original 1977 film}} later more lengthily titled ''Star Wars: Episode IV – A New Hope''. The classifications get more complicated to determine as the conversation progresses while revealing a quite specific obsession with the character of {{w|Boba Fett}}. The complexity may even end up converting {{w|Lumpers and splitters|lumpers into splitters}}, a philosophical distinction that another [[2518: Lumpers and Splitters|recent comic]] touched upon. &lt;br /&gt;
&lt;br /&gt;
Nonfiction (also spelled non-fiction) is any document or media content that intends, in good faith, to present only truth and accuracy regarding information, events, or people. In contrast, fiction offers information, events, or characters expected to be partly or largely imaginary, or else leaves open if and how the work refers to reality.&lt;br /&gt;
&lt;br /&gt;
In the end, White Hat suggests that, since Cueball has so many works featuring Boba Fett, it would be more useful to group them together in a new category rather than sorting them into the fiction and nonfiction sections.&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot; &lt;br /&gt;
!Media name &lt;br /&gt;
!Explanation &lt;br /&gt;
|-&lt;br /&gt;
| ''Star Wars''&lt;br /&gt;
| ''Star Wars'' is a science-''fiction'' movie released in 1977.&lt;br /&gt;
|-&lt;br /&gt;
| ''{{w|The Making of Star Wars}}''&lt;br /&gt;
| This was a television special about how ''Star Wars'' was made, which would make it nonfiction.&lt;br /&gt;
|-&lt;br /&gt;
| ''Star Wars: The Adventures of Boba Fett''&lt;br /&gt;
| This would be one of the ''Star Wars'' franchise's continuity of stories, making it fictional. Not a currently extant release, but something like this {{w|List_of_Star_Wars_films#Unproduced_films|has been long anticipated}}, and now possibly inspired by the imminent release (as of the comic's time of posting) of {{w|The Book of Boba Fett}}.&lt;br /&gt;
|-&lt;br /&gt;
| ''Star Wars: The Official Guide to Boba Fett's Armor and Weapons''&lt;br /&gt;
| While the content of this guidebook is entirely fictional, the book is factual.  Boba Fett (a fictional character){{citation needed}} does in fact [https://scifi.stackexchange.com/a/253196 have durasteel]/[https://starwars.fandom.com/wiki/Boba_Fett%27s_armor Beskar] armor (a fictional material), so the book is technically non-fiction.  &lt;br /&gt;
|-&lt;br /&gt;
| ''Boba Fett's Gadgets and How He Got Them''&lt;br /&gt;
| This could either be a non-fictional book or docuseries similar to the previous entry, or instead an in-universe adventure series or film.  The rhythm of the words is similar to the in-universe guidebook &amp;quot;[https://en.wikipedia.org/wiki/Fantastic_Beasts_and_Where_to_Find_Them Fantastic Beasts and Where to Find Them]&amp;quot; from the {{w|Harry Potter}} universe - this is a non-fiction book used educationally for young wizards within a fictional world{{citation needed}} and also a fiction book within the real{{citation needed}} world.&lt;br /&gt;
|-&lt;br /&gt;
| ''Boba Fett: A Life'' by Doris Kearns Goodwin&lt;br /&gt;
| {{w|Doris Kearns Goodwin}} is a historian and biographer who has written biographies of many influential people. Since Goodwin is a non-fiction writer, one would have to read this (not actually existent) book to determine whether the biography is a fictional account of the character, or a factual account of the fictional history of the character. If the book doesn't establish any new canon, and is instead citing only recorded (fictional) facts from the Star Wars Universe and, perhaps, the real-world influences on and by the character, it could legitimately be considered non-fiction.&lt;br /&gt;
|-&lt;br /&gt;
| (title text) Boba Fett's biography of Doris Kearns Goodwin&lt;br /&gt;
| It is unclear how, or why, a fictional character would write a biography on a real life person, but there's always the possibly that there was already a fictional Doris, in-universe to Boba, whose own life and exploits would be natural for an actually fictional factual output. &lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is talking to Ponytail and White Hat.]&lt;br /&gt;
:Cueball: ''Star Wars''?&lt;br /&gt;
:Ponytail: Fiction.&lt;br /&gt;
&lt;br /&gt;
:[Same setting.]&lt;br /&gt;
:Cueball: ''The Making of Star Wars''?&lt;br /&gt;
:White Hat: Nonfiction.&lt;br /&gt;
&lt;br /&gt;
:[Closeup of Cueball.]&lt;br /&gt;
:Cueball: ''Star Wars: The Adventures of Boba Fett''?&lt;br /&gt;
:Off-panel voice: Fiction.&lt;br /&gt;
&lt;br /&gt;
:[Closeup of Ponytail.]&lt;br /&gt;
:Cueball (off-panel): ''Star Wars: The Official Guide to Boba Fett's Armor and Weapons''?&lt;br /&gt;
:Ponytail: Nonfiction, technically.&lt;br /&gt;
&lt;br /&gt;
:[Cueball has lifted a hand palm up as he talks to Ponytail and White Hat.]&lt;br /&gt;
:Cueball: ''Boba Fett's Gadgets and How He Got Them''?&lt;br /&gt;
:Ponytail: ...Fiction? &lt;br /&gt;
:Ponytail: It depends.&lt;br /&gt;
&lt;br /&gt;
:[Cueball is talking to Ponytail and White Hat. Ponytail has turned towards White Hat and has taken a hand to her chin.]&lt;br /&gt;
:Cueball: ''Boba Fett: A Life'', by historian Doris Kearns Goodwin?&lt;br /&gt;
:Ponytail: Hm.&lt;br /&gt;
:White Hat: Maybe we should just have a Boba Fett section.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Star Wars]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Comics featuring White Hat]]&lt;br /&gt;
[[Category:Comics featuring real people]]&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=978:_Citogenesis&amp;diff=221366</id>
		<title>978: Citogenesis</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=978:_Citogenesis&amp;diff=221366"/>
				<updated>2021-11-25T20:01:00Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: Undo revision 221356 by 108.162.215.155 (talk) Vandalism&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 978&lt;br /&gt;
| date      = November 16, 2011&lt;br /&gt;
| title     = Citogenesis&lt;br /&gt;
| image     = citogenesis.png&lt;br /&gt;
| titletext = I just read a pop-science book by a respected author. One chapter, and much of the thesis, was based around wildly inaccurate data which traced back to... Wikipedia. To encourage people to be on their toes, I'm not going to say what book or author.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
This comic is calling into question the {{w|reliability of Wikipedia}}. This is a favorite pastime of librarians, teachers, and professional researchers, and not usually one of [[Randall]]'s. {{w|Wikipedia}} is a free and freely editable encyclopedia that aims to become a comprehensive, {{w|Wikipedia:Wikipedia in brief|neutral compilation of verifiable, established facts}}.  Wikipedia aims to provide only facts backed by {{w|Wikipedia:Identifying reliable sources|reliable sources}}. However, this comic strip details a process in which Wikipedia can not only spread misinformation, but make said misinformation seem reliable through a process of &amp;quot;circular reporting&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
The title of the comic is a play on the word [http://www.merriam-webster.com/medical/cytogenesis cytogenesis]. Cytogenesis is the formation of cells and their development. {{w|Citogenesis}}, on the other hand is a [http://www.merriam-webster.com/dictionary/portmanteau portmanteau] of 'Citation' and 'Genesis'. A {{w|Citation}} is a reference to a source, used to back up a specific claim. [http://mw1.merriam-webster.com/dictionary/genesis?show=1&amp;amp;t=1346949206 Genesis] means the origin of something.  By extension, citogenesis is the creation of text in a reliable source that can be cited to back-up a claim.&lt;br /&gt;
&lt;br /&gt;
In the process described here, someone adds an untrue claim to an article in Wikipedia. A writer of some supposedly &amp;quot;reliable source&amp;quot; checks Wikipedia for information, and blindly relies on it, without checking for proper sources - the comic uses rushed writers, such as those responsible for news stories, as an example of someone who may do this. Eventually, someone notices the claim in the reliable source, and cites it in the Wikipedia article. The citation now gives the claim credence, as readers don't realize that the official source was based of the Wikipedia article. Thanks to this citation, other reporters, slightly more cautious than the first, consider this bit of information to be reliable, and then cite it in articles of their own. Those articles then get cited in Wikipedia, making the claim seem more reliable, encouraging even more reporters to believe it, and repeat the claim. Eventually, a long list of citations is available, giving an impression of consensus, even though all of it originated with a single article, which was based on an uncited Wikipedia edit.&lt;br /&gt;
&lt;br /&gt;
Four years before, Randall [http://en.wikipedia.org/w/index.php?title=Talk:Xkcd&amp;amp;diff=162077300 commented on Wikipedia] about that process happening to him (on a minor detail), which probably indicates the inception of this comic:&lt;br /&gt;
&amp;lt;blockquote&amp;gt;''I've never referred to the [[1: Barrel - Part 1|boy in the barrel]] as &amp;quot;Barrel Lad&amp;quot; -- that seems to have started in this [Wikipedia] article. I've called him &amp;quot;Barrel boy&amp;quot; or &amp;quot;The boy in the barrel&amp;quot;. Minor detail, but it's funny how sometimes something can appear on Wikipedia, get referenced in other places, and then Wikipedia cites those other places as supporting references. Hooray {{w|Wikipedia in culture#Wikiality|Wikiality}}!'' &amp;lt;small&amp;gt;— Randall Munroe as user &amp;quot;xkcd&amp;quot;, [http://en.wikipedia.org/wiki/Talk:Xkcd/Archive_2#Notes_from_the_author en.wikipedia.org/wiki/Talk:Xkcd#Notes_from_the_author], 3 October 2007&amp;lt;/small&amp;gt;&amp;lt;/blockquote&amp;gt;&lt;br /&gt;
&lt;br /&gt;
In turn, Randall originated the untrue assertion in this comic that {{w|Steven Chu}}, a physicist, and at the time of the strip the U.S. Secretary of Energy, invented the {{w|Scroll lock}} key, a common button on computer keyboards. Since most people are aware of the scroll lock key but know little about its function or origins, this false information would make for an interesting piece of trivia that would likely spread very quickly.    &lt;br /&gt;
&lt;br /&gt;
Following this comic, the actual {{w|Scroll Lock}} and {{w|Steven Chu}} articles {{w|Talk:Scroll_Lock#Thanks_Randall|were}} {{w|Talk:Steven_Chu#Scroll_lock_key|both}} vandalized by &amp;quot;helpful&amp;quot; editors trying to project Randall's reality on Wikipedia. The Wikipedia article on {{w|Citogenesis}} redirects to the {{w|Reliability of Wikipedia#Information loop|information loop}} section on the article &amp;quot;Reliability of Wikipedia&amp;quot;.  That section ends with crediting the term &amp;quot;citogenesis&amp;quot; to &amp;quot;webcomic artist Randall Munroe&amp;quot;, with a link to this comic. This now has three citations. To make matters even more surreal, some Wikipedia editor [https://en.wikipedia.org/w/index.php?title=Reliability_of_Wikipedia&amp;amp;diff=517901534&amp;amp;oldid=517901176 once flagged] the link to this xkcd comic as &amp;quot;Dubious - The material near this tag is possibly inaccurate or non-factual.&amp;quot;!&lt;br /&gt;
&lt;br /&gt;
We haven't seen a book like the one Randall describes in the title text.  But one example of the misuse of Wikipedia by &amp;quot;reliable sources&amp;quot; concerns the former German minister {{w|Karl-Theodor zu Guttenberg}}. His complete name contains fifteen names/words and reads: Karl-Theodor Maria Nikolaus Johann Jacob Philipp Franz Joseph Sylvester Freiherr von und zu Guttenberg. An anonymous user added one more (&amp;quot;Wilhelm&amp;quot;) to the German Wikipedia, just the evening before Karl-Theodor zu Guttenberg was presented as the new Federal Minister of Economics and Technology on February 10, 2009. The next day many major German newspapers published this wrong name ([http://translate.google.com/translate?sl=de&amp;amp;tl=en&amp;amp;js=n&amp;amp;prev=_t&amp;amp;hl=en&amp;amp;ie=UTF-8&amp;amp;layout=2&amp;amp;eotf=1&amp;amp;u=http%3A%2F%2Fwww.bildblog.de%2F5704%2Fwie-ich-freiherr-von-guttenberg-zu-wilhelm-machte%2F translation of bildblog.de]).&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:Where Citations Come From:&lt;br /&gt;
:Citogenesis Step #1&lt;br /&gt;
:Through a convoluted process, a user's brain generates facts. These are typed into Wikipedia.&lt;br /&gt;
:[Hairy sits at a desk, typing on a laptop.]&lt;br /&gt;
:Hairy: (typing) The &amp;quot;scroll lock&amp;quot; key was was designed by future Energy Secretary Steven Chu in a college project.&lt;br /&gt;
&lt;br /&gt;
:Step #2&lt;br /&gt;
:A rushed writer checks Wikipedia for a summary of their subject.&lt;br /&gt;
:[Ponytail sits at a desk, typing on a desktop.]&lt;br /&gt;
:Ponytail: (typing) US Energy Secretary Steven Chu, (Nobel Prizewinner and creator of the ubiquitous &amp;quot;scroll lock&amp;quot; key) testified before Congress today...&lt;br /&gt;
&lt;br /&gt;
:Step #3&lt;br /&gt;
:Surprised readers check Wikipedia, see the claim, and flag it for review. A passing editor finds the piece and adds it as a citation.&lt;br /&gt;
:[Cueball sits on a couch with a laptop in his lap, typing.]&lt;br /&gt;
:Cueball: Google is your friend, people. (typing) &amp;lt;nowiki&amp;gt;&amp;lt;ref&amp;gt;{{cite web|url=&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
:Step #4&lt;br /&gt;
:Now that other writers have a real source, they repeat the fact.&lt;br /&gt;
:[A flow chart, with &amp;quot;Wikipedia citation&amp;quot; in the center. The word &amp;quot;Wikipedia&amp;quot; is in black, the word &amp;quot;citations&amp;quot; is white with a red background.&lt;br /&gt;
:[A black arrow leads from &amp;quot;brain&amp;quot; to &amp;quot;Wikipedia.&amp;quot;]&lt;br /&gt;
:[A black arrow labeled &amp;quot;words&amp;quot; leads from &amp;quot;Wikipedia&amp;quot; to &amp;quot;careless writers,&amp;quot; and a red arrow labeled &amp;quot;citations&amp;quot; leads back to &amp;quot;Wikipedia citations.&amp;quot;]&lt;br /&gt;
:[A black &amp;amp; red arrow leads from &amp;quot;Wikipedia&amp;quot; to &amp;quot;cited facts&amp;quot; which leads to &amp;quot;slightly more careful writers,&amp;quot; which leads to &amp;quot;more citations,&amp;quot; which leads back to :&amp;quot;Wikipedia&amp;quot; (all black &amp;amp; red arrows).]&lt;br /&gt;
:References proliferate, completing the citogenesis process.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
* The word &amp;quot;was&amp;quot; occurs twice consecutively in the first panel.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Flowcharts]]&lt;br /&gt;
[[Category:Wikipedia]]&lt;br /&gt;
[[Category:Comics with color]]&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2546:_Fiction_vs_Nonfiction&amp;diff=221346</id>
		<title>2546: Fiction vs Nonfiction</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2546:_Fiction_vs_Nonfiction&amp;diff=221346"/>
				<updated>2021-11-25T14:16:47Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ Possible inspiration.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2546&lt;br /&gt;
| date      = November 24, 2021&lt;br /&gt;
| title     = Fiction vs Nonfiction&lt;br /&gt;
| image     = fiction_vs_nonfiction.png&lt;br /&gt;
| titletext = The real challenge is how to file Boba Fett's biography of Doris Kearns Goodwin.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by A NONFICTIONAL BOBA FETT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
[[Cueball]] is asking [[Ponytail]] and [[White Hat]] to classify different ''{{w|Star Wars}}'' books and movies as fiction or nonfiction. ''Star Wars'' as a whole is a multimedia franchise, which includes films, TV series, novels, etc, but often singularly refers to {{w|Star Wars (film)|the original 1977 film}} later more lengthily titled ''Star Wars: Episode IV – A New Hope''. The classifications get more complicated to determine as the conversation progresses, whilst revealing a quite specific obsession with the character of {{w|Boba Fett}}.&lt;br /&gt;
&lt;br /&gt;
Nonfiction (also spelled non-fiction) is any document or media content that intends, in good faith, to present only truth and accuracy regarding information, events, or people. In contrast, fiction offers information, events, or characters expected to be partly or largely imaginary, or else leaves open if and how the work refers to reality.&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot; &lt;br /&gt;
!Media name &lt;br /&gt;
!Explanation &lt;br /&gt;
|-&lt;br /&gt;
| ''Star Wars''&lt;br /&gt;
| ''Star Wars'' is a science-''fiction'' movie released in 1977.&lt;br /&gt;
|-&lt;br /&gt;
| ''{{w|The Making of Star Wars}}''&lt;br /&gt;
| This was a television special about how ''Star Wars'' was made, which would make it nonfiction.&lt;br /&gt;
|-&lt;br /&gt;
| ''Star Wars: The Adventures of Boba Fett''&lt;br /&gt;
| This would be one of the ''Star Wars'' franchise's continuity of stories, making it fictional. Possibly inspired by the imminent release (as of the comic's time of posting) of {{w|The Book of Boba Fett}}.&lt;br /&gt;
|-&lt;br /&gt;
| ''Star Wars: The Official Guide to Boba Fett's Armor and Weapons''&lt;br /&gt;
| While the content of this guidebook is entirely fictional, the book is factual.  Boba Fett (a fictional character) does in fact [https://scifi.stackexchange.com/a/253196 have durasteel]/[https://starwars.fandom.com/wiki/Boba_Fett%27s_armor Beskar] armor (a fictional material), so the book is technically non-fiction.  &lt;br /&gt;
|-&lt;br /&gt;
| ''Boba Fett's Gadgets and How He Got Them''&lt;br /&gt;
| This could either be a non-fictional book or docuseries similar to the previous entry, or instead an in-universe adventure series or film.&lt;br /&gt;
|-&lt;br /&gt;
| ''Boba Fett: A Life'' by Doris Kearns Goodwin&lt;br /&gt;
| {{w|Doris Kearns Goodwin}} is a historian and biographer who has written biographies of many influential people.  Since Goodwin is a non-fiction writer, it could be difficult to determine whether the biography is a fictional account of the character, or a factual account of the fictional history of the character.  If the book doesn't establish any new canon, and is instead citing only recorded (fictional) facts from the Star Wars Universe, it could legitimately be considered non-fiction.&lt;br /&gt;
|-&lt;br /&gt;
| (title text) Boba Fett's biography on Doris Kearns Goodwin&lt;br /&gt;
| It is unclear how, or why, a fictional character would write a biography on a real life person, but there's always the possibly that there was a fictional Doris, in-universe to Boba, whose own life and exploits would be natural for an actually fictional factual output. &lt;br /&gt;
|}&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;
:[Cueball is facing Ponytail, and White Hat.]&lt;br /&gt;
:Cueball: ''Star Wars''?&lt;br /&gt;
:Ponytail: Fiction.&lt;br /&gt;
&lt;br /&gt;
:[Cueball is facing Ponytail, and White Hat.]&lt;br /&gt;
:Cueball: ''The Making of Star Wars''?&lt;br /&gt;
:White Hat: Nonfiction.&lt;br /&gt;
&lt;br /&gt;
:[Closeup of Cueball.]&lt;br /&gt;
:Cueball: ''Star Wars: The Adventures of Boba Fett''?&lt;br /&gt;
:Ponytail (off-panel): Fiction.&lt;br /&gt;
&lt;br /&gt;
:[Closeup of Ponytail.]&lt;br /&gt;
:Cueball (off-panel): ''Star Wars: The Official Guide to Boba Fett's Armor and Weapons''?&lt;br /&gt;
:Ponytail: Nonfiction, technically.&lt;br /&gt;
&lt;br /&gt;
:[Cueball is facing Ponytail, and White Hat.]&lt;br /&gt;
:Cueball: ''Boba Fett's Gadgets and How He Got Them''?&lt;br /&gt;
:Ponytail: ...Fiction? It depends.&lt;br /&gt;
&lt;br /&gt;
:[Cueball is facing Ponytail, and White Hat.  Ponytail has turned towards White Hat.]&lt;br /&gt;
:Cueball: ''Boba Fett: A Life'', by historian Doris Kearns Goodwin?&lt;br /&gt;
:Ponytail: Hm.&lt;br /&gt;
:White Hat: Maybe we should just have a Boba Fett section.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Star Wars]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Comics featuring White Hat]]&lt;br /&gt;
[[Category:Comics featuring real people]]&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2541:_Occam&amp;diff=220739</id>
		<title>2541: Occam</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2541:_Occam&amp;diff=220739"/>
				<updated>2021-11-12T20:20:41Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ Missed a link.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2541&lt;br /&gt;
| date      = November 12, 2021&lt;br /&gt;
| title     = Occam&lt;br /&gt;
| image     = occam.png&lt;br /&gt;
| titletext = Oh no, Murphy just picked up the razor.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a BOT THAT ONLY CREATES ALL PAGES NOT MENTIONING ITSELF - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
This comic conflates three conceptual approaches. {{w|Occam's Razor}}, {{w|Russell's Paradox}} and {{w|Murphy's Law}}.&lt;br /&gt;
&lt;br /&gt;
Occam would suggests that explanations that do not add unnecessary assumptions (the 'simplest') should be your position until proven otherwise. The 'razor' conceptually cuts away those alternative explanations, to leave just whatever is currently most valid.&lt;br /&gt;
&lt;br /&gt;
Russell postulates, in one analogy of it, the paradoxical situation in which a barber is expected to shave (with an in-universe razor) all men in his town who do not shave themselves. The question is whether he must/must not thus shave himself.&lt;br /&gt;
&lt;br /&gt;
In the titletext, Murphy is invoked as the expectation (sometimes known as Sod's Law) that if anything can go wrong, in any given circumstance, it will. Shaving with a {{w|Straight razor|cut-throat}} razor has failure modes including one explained by the name.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
[One panel.  Megan and Cueball walking.]&lt;br /&gt;
&lt;br /&gt;
Megan: The simplest explanation is that Occam shaves the barber.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2541:_Occam&amp;diff=220738</id>
		<title>2541: Occam</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2541:_Occam&amp;diff=220738"/>
				<updated>2021-11-12T20:18:15Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ Sorry, I liked your BOT change, but I thought I had minimally expressed it before the edit-conflict.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2541&lt;br /&gt;
| date      = November 12, 2021&lt;br /&gt;
| title     = Occam&lt;br /&gt;
| image     = occam.png&lt;br /&gt;
| titletext = Oh no, Murphy just picked up the razor.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a BOT THAT ONLY CREATES ALL PAGES NOT MENTIONING ITSELF - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
This comic conflates three conceptual approaches. {{w|Occam's Razor}}, {{w|Russell's Paradox}} and {{w|Murphy's Law}}.&lt;br /&gt;
&lt;br /&gt;
Occam would suggests that explanations that do not add unnecessary assumptions (the 'simplest') should be your position until proven otherwise. The 'razor' conceptually cuts away those alternative explanations, to leave just whatever is currently most valid.&lt;br /&gt;
&lt;br /&gt;
Russell postulates, in one analogy of it, the paradoxical situation in which a barber is expected to shave (with an in-universe razor) all men in his town who do not shave themselves. The question is whether he must/must not thus shave himself.&lt;br /&gt;
&lt;br /&gt;
In the titletext, Murphy is invoked as the expectation (sometimes known as Sod's Law) that if anything can go wrong, in any given circumstance, it will. Shaving with a cut-throat razor has failure modes including one explained by the name.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
[One panel.  Megan and Cueball walking.]&lt;br /&gt;
&lt;br /&gt;
Megan: The simplest explanation is that Occam shaves the barber.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2540:_TTSLTSWBD&amp;diff=220715</id>
		<title>Talk:2540: TTSLTSWBD</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2540:_TTSLTSWBD&amp;diff=220715"/>
				<updated>2021-11-12T16:36:45Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: &lt;/p&gt;
&lt;hr /&gt;
&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;
XKCD 332 should be referenced here. Gyroscopes are not only directly referenced but also the similar observation that they should not work. I am being careful not to edit this page at the moment since it's probably very active. [[Special:Contributions/162.158.62.38|162.158.62.38]] 04:46, 11 November 2021 (UTC)&lt;br /&gt;
: Done! :D [[User:Esogalt|Esogalt]] ([[User talk:Esogalt|talk]]) 06:10, 11 November 2021 (UTC)&lt;br /&gt;
&amp;quot;FIRST ANNUAL&amp;quot;?? How does one know that it will be an annual event until the second one takes place??? &amp;lt;PET PEEVE&amp;gt; [[Special:Contributions/172.70.126.195|172.70.126.195]] 10:14, 11 November 2021 (UTC)&lt;br /&gt;
: Planning is a thing? [[User:Esogalt|Esogalt]] ([[User talk:Esogalt|talk]]) 10:33, 11 November 2021 (UTC)&lt;br /&gt;
: It immediately followed the long-running 363-day conference on Things That Seem Like They Should Work But Don’t, so naturally there’ll be another one every year. They didn’t even have to change the banner.[[Special:Contributions/162.158.106.131|162.158.106.131]] 10:47, 11 November 2021 (UTC)&lt;br /&gt;
: There may ''never'' be a second, especially in Randallworld. As a roundworld example, this very year we had the &amp;quot;31st '''First Annual''' Ig Nobel Prize ceremony&amp;quot;. ;) [[Special:Contributions/172.70.90.35|172.70.90.35]] 12:35, 11 November 2021 (UTC) I once was in a &amp;quot;First Annual Iron Man&amp;quot; competition that wasn't held the following year, so . . . .[[Special:Contributions/162.158.74.24|162.158.74.24]] 13:50, 11 November 2021 (UTC)&lt;br /&gt;
Uh...I legit want to go to this conference.  [[Special:Contributions/172.70.130.209|172.70.130.209]] 13:58, 11 November 2021 (UTC)&lt;br /&gt;
:It's actually entirely possible to plan conferences yourself, so maybe if you know some place where it could be held you could organize it? [[Special:Contributions/162.158.111.80|shitpoocrapfeces]] 15:11, 11 November 2021 (UTC)&lt;br /&gt;
::Hey, that's a good idea, thanks shitpoo...crap...maybe I shouldn't take unsolicited advice from strangers on the internet...[[Special:Contributions/172.70.126.195|172.70.126.195]] 15:38, 11 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
I don't think that lunch is listed as if it were a topic. It's normal to say that lunch takes place between sessions. The session topics are described as &amp;quot;on &amp;lt;something&amp;gt;&amp;quot;, but lunch isn't. And why isn't there a [citation needed] after saying that many humans eat lunch? That's clearly more sarcastically appropriate than the ones about airships being big and heavy. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 15:33, 11 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
:Agreed, I wasn't sure whether to be annoyed or amused at that entry. I was... &amp;quot;anused&amp;quot; ''(presumably pronounced &amp;quot;ann-YOOZED&amp;quot;).'' --mezimm [[Special:Contributions/172.69.68.17|172.69.68.17]] 15:17, 12 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
I feel like the conference itself seems like it should not work, but apparently the conference did work. [[Special:Contributions/172.70.82.53|172.70.82.53]] 19:51, 11 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
[https://www.livescience.com/33075-how-bees-fly.html Bumblebees!] [[Special:Contributions/172.68.129.133|172.68.129.133]] 20:39, 11 November 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
Due to the n’t shortening, the banner looks like it could mean “Things That Seem Like They Should Work But Don’t”{unsigned)&lt;br /&gt;
&lt;br /&gt;
I would dispute lunch being there for the displacement of dinner. In some parts, dinner is still firmly in the middle of the day, if it is eaten at all. The evening meal is teatime and may be more or less important (&amp;quot;high tea&amp;quot; might happen, if ritualisticly social, but that's leaning firmly towards finger-food) depending on what/if dinner was eaten. 'Lunch' is merely a foreignish term for a dinnertime-'lite' (or more informal, like desk-eating or al-fresco sarnis in a manner that isn't a full-on picnic, where a full dinner is not eaten and tea (or a more formal &amp;quot;evening meal&amp;quot;) is the major meal), with 'elevenses' being any mid-morning break (ideally within ''wishful'' range of 11AM, but can be early!) with at least a choice of biscuits accompanying some work-appropriate drink (maybe less filling than the fabled &amp;quot;brunch&amp;quot;, but that's not necessary if you have a good fortifying breakfast first thing) sometimes termed a &amp;quot;mid-morning/pre-dinner lunch&amp;quot; in gatherings where there's also to be a cooked buffet at or soon after midday. If you want to (but apparently it's not good for overnight blood-sugar or sleep-patterns) there's also &amp;quot;Supper&amp;quot; to be partaken of before bed. Liquid-lunch (or liquid-supper) is a drinks only repaste, of an alcoholic variety, often in pints and/or short-measures, and very rarely does this apply to other suffixed versions (rather, it could just be continual between the two, but not considered healthy). Of course, I don't speak for everyone, especially hobbits, but there can be much cultural confusion so I'd normally suggest not trying to tie mealtimes down too much. (In dialects of English. The German Abendessen and Mittagessen, etc, seem obvious enough!) [[Special:Contributions/172.70.85.41|172.70.85.41]] 16:36, 12 November 2021 (UTC)&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2540:_TTSLTSWBD&amp;diff=220674</id>
		<title>2540: TTSLTSWBD</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2540:_TTSLTSWBD&amp;diff=220674"/>
				<updated>2021-11-11T12:43:32Z</updated>
		
		<summary type="html">&lt;p&gt;172.70.85.41: /* Explanation */ An amazing degree of control/feedback/just-the-righthmoment-to-stop-fluttering,veven in a breeze. But then those that don't have it don't live as long, so obviously must have been honed to just the right amount of perfection to be useful&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2540&lt;br /&gt;
| date      = November 10, 2021&lt;br /&gt;
| title     = TTSLTSWBD&lt;br /&gt;
| image     = ttsltswbd.png&lt;br /&gt;
| titletext = Tomorrow's sessions will be entirely devoted to sewing machine rotary hooks.&lt;br /&gt;
}}&lt;br /&gt;
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==Explanation==&lt;br /&gt;
{{incomplete|Created by a BOT THAT SEEMS LIKE IT SHOULDN'T WORK BUT DOES. Do NOT delete this tag too soon.}}&lt;br /&gt;
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[[Cueball]] is standing at a [[1661: Podium|lectern]], addressing a large crowd. He is describing the program of some event, listing the different topics that will be covered. These appear to be random, but the caption gives the punchline: it is a conference on things that seem like they shouldn't work but do.&lt;br /&gt;
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By &amp;quot;things that seem like they shouldn't work&amp;quot;, it means things that you wouldn't expect to be able to function at all.  &lt;br /&gt;
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{{w|Organ transplantation}}, where a functioning organ is pulled from a (possibly deceased) person and put into another person where it will continue to operate, is not a simple process, and a lot of things could go wrong and make it not work. Nevertheless, humanity’s medical knowledge is advanced enough that organ transplantation is a widely accepted and largely effective life-saving procedure.&lt;br /&gt;
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{{w|Airship|Airships}}, or dirigibles, are big,{{citation needed}} have a metal envelope, and look pretty heavy,{{citation needed}} but are able to be held aloft by the lighter than air gas inside.  &lt;br /&gt;
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{{w|Gyroscope|Gyroscopes}}, where a spinning disk will tend to keep its orientation in space despite the movement of the structure around it, can be counterintuitive even to those who understand the physical principles. This weirdness has been previously referenced in [[332: Gyroscopes]]. &lt;br /&gt;
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{{w|Butterfly|Butterflies}} fly with an unusual fluttering behaviour, which works in part due to the notoriously complex principles of fluid dynamics that may look like uncontrolled fluttering but yet somehow allows the creature to land directly on specific flowerheads to feed. This is not as intuitively understandable as the flight of larger creatures such as birds.&lt;br /&gt;
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The title text refers to {{w|Rotary hook|rotary hooks}} on sewing machines, which are a complicated (and complicated looking) mechanism whose purpose is to feed one thread in a loop around a whole spool of another thread, to the extent that they feel they need a whole day to cover them.&lt;br /&gt;
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==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:[Cueball stands at a lectern gesturing with one hand held out, speaking to an audience. A banner hangs on the wall with the acronym &amp;quot;TTSLTSWBD&amp;quot; displayed in large text, with illegible smaller text under it.]&lt;br /&gt;
:Cueball: Next we have a session on organ transplants and another on airships.&lt;br /&gt;
:Cueball: Then lunch, then we'll have one on gyroscopes and one on butterflies.&lt;br /&gt;
:[Caption below panel:]&lt;br /&gt;
:The first annual conference on Things That Seem Like They Shouldn't Work But Do&lt;br /&gt;
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{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.70.85.41</name></author>	</entry>

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