<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
		<id>https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=162.158.88.62</id>
		<title>explain xkcd - User contributions [en]</title>
		<link rel="self" type="application/atom+xml" href="https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=162.158.88.62"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php/Special:Contributions/162.158.88.62"/>
		<updated>2026-05-31T08:44:36Z</updated>
		<subtitle>User contributions</subtitle>
		<generator>MediaWiki 1.30.0</generator>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2463:_Astrophotography&amp;diff=211995</id>
		<title>2463: Astrophotography</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2463:_Astrophotography&amp;diff=211995"/>
				<updated>2021-05-16T09:43:28Z</updated>
		
		<summary type="html">&lt;p&gt;162.158.88.62: /* Explanation */ Stephen Potter&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2463&lt;br /&gt;
| date      = May 15, 2021&lt;br /&gt;
| title     = Astrophotography&lt;br /&gt;
| image     = astrophotography.png&lt;br /&gt;
| titletext = [One hill over, a competing astrophotographer does a backflip over a commercial airliner while throwing a tray of plastic space stations into the air, through which a falcon swoops to 'grab' the real one.]&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a BACKFLIPPING ASTROPHOTOGRAPHER. Title text needs to be outlined as the main explanation. Do NOT delete this tag too soon.}}&lt;br /&gt;
{{w|Astrophotography}} is the practice of taking pictures of astronomical objects.  Sometimes it is specified as a hobby, as opposed to the work of professional astronomers.  Astrophotographers like to take pretty pictures of all sorts of objects in the sky, but photographing the {{w|Sun}} is a popular subgenre within the field, especially if something is transiting in front of it.  Typical things include planes, the {{w|International Space Station}} (ISS), and the {{w|Moon}} ({{w|Solar eclipses}}).&lt;br /&gt;
&lt;br /&gt;
During the [[:Category:Total Solar Eclipse 2017|Total Solar Eclipse 2017]] visible across US it was possible to see the ISS pass in front of the Sun during a partial part of the Eclipse (from a site that was later in the total Eclipse zone.) This was [https://www.smartereveryday.com/eclipse photographed] and filmed by Destin from Smarter Every Day and can be seen in his video [https://www.youtube.com/watch?v=lepQoU4oek4&amp;amp;feature=youtu.be Space Station Transiting 2017 ECLIPSE]. (Go to the time of the flyby of the ISS in the video [https://youtu.be/lepQoU4oek4?t=209 here]).&lt;br /&gt;
&lt;br /&gt;
The practice of &amp;quot;one-upmanship&amp;quot; refers to the practice of achieving something superior to what another has achieved, or &amp;quot;getting one up on&amp;quot; them. The term being coined by Stephen Potter in &amp;quot;One-Upmanship: Being Some Account of the Activities and Teachings of the Lifemanship Correspondence College of One-Upness and Games Lifemastery.&amp;quot; the third of his sequence of comic self-help books.&lt;br /&gt;
&lt;br /&gt;
The caption claims that the photo shown in the comic is the result of a continuous string of one-upmanship among astrophotographers in a community, each striving to one-up the other.&lt;br /&gt;
&lt;br /&gt;
In this comic there seems to be an abundance of things:&lt;br /&gt;
&lt;br /&gt;
* The ISS can be seen transiting in the upper center.&lt;br /&gt;
* There is an ongoing {{w|partial solar eclipse}} so the view of the Sun is partially obscured by the Moon in the upper right quadrant. &lt;br /&gt;
&lt;br /&gt;
These two things are what Destin managed. But this photographer did several one up on him.&lt;br /&gt;
&lt;br /&gt;
* The sun is setting or rising from behind a hill.&lt;br /&gt;
* [[Megan]] is standing slightly below the peak of a hill and seems to be juggling, with five balls, which are also in front of the sun.  One or more of those balls might actually be {{w|sunspots}} or the planets Mercury or Venus.&lt;br /&gt;
* [[Cueball]] is standing at the peak of the hill, shooting an arrow from a bow, one arrow has pierced what at first appears to be one of the juggling balls, but may be a {{w|Transit of Venus}}. &lt;br /&gt;
* A simultaneous Eclipse and Transit of Venus is actually expected in the future, but not until April 5, 15232 (13211 years after the publishing of this comic). It would though likely be easier to make the arrow &amp;quot;hit&amp;quot; Venus than one of the joggled balls, as the planet's position is constant at the time the photo is taken. The other four balls are too large that any of them could represent Mercury, the only other planet that can transit the Sun, when seen from Earth. But Megan has been careful to make one ball go so much higher than the middle two, that it seems to fit that Venus has been shot out from between them.&lt;br /&gt;
* Two airplanes flying above them are pulling signs with the words &amp;quot;nice&amp;quot; and &amp;quot;shot&amp;quot; (which could refer to both the archer and the photographer). The signs will have to be made with transparent material in the canvas letting sun through. (The letters are clearly not just cutouts, or they would have distinct {{w|stencil}} bridges.)&lt;br /&gt;
&lt;br /&gt;
Taking the picture required precisely scheduling and arranging the relative positions of several of the various subjects (and photographer) to coincide with the predictable but rare conjunctions of the rest of the scene, as well as special equipment:&lt;br /&gt;
* All this had to be timed very very precisely as the [https://youtu.be/lepQoU4oek4?t=209 transit of the ISS only takes a second].&lt;br /&gt;
* A solar filter must be used to photograph the sun without overexposing the image or even damaging equipment.&lt;br /&gt;
* The photograph must be taken during a partial solar eclipse. These only happen a few times per year and are only visible in part of the world.&lt;br /&gt;
* Related to the last point, a nearby person appears larger than the moon. It is possible to photograph the silhouette of a person or a cityscape in front of a full moon, making the moon look comparatively larger or smaller by adjusting the distance to the closer subject, and then the lenses used by the photographer to make them both fill just the right amount of the frame. The photographer needed to carefully choose their position relative to the subjects to make this happen.&lt;br /&gt;
* The exposure time of the photograph had to be short enough to capture clear silhouettes of the ISS, the juggling balls and the arrow while these were in the air.&lt;br /&gt;
* The mountain had to be in a location that would happen to see the ISS passing in front of the sun at the same time as the sun was rising from behind it.&lt;br /&gt;
* The subjects had to achieve a moment in which four juggling balls were in the air and an arrow had pierced the point where Venus would appear, while sideways relative to the sun's light, with still near normal intensity.&lt;br /&gt;
* The planes also needed to be flying in the correct directions for the text of the signs to be visible, and with very precise timing for them to be in the correct positions to read &amp;quot;Nice&amp;quot; as coming before &amp;quot;Shot&amp;quot; just as the ISS passes by.&lt;br /&gt;
* The sky (at least between the photographer and the Sun) had to be free of clouds.&lt;br /&gt;
&lt;br /&gt;
The title text describes a similarly outlandish photo attempting to one-up Cueball and Megan:&lt;br /&gt;
&lt;br /&gt;
* An airliner is flying in front of the Sun.&lt;br /&gt;
* The astrophotographer is performing a backflip such that he appears to be over the airliner.&lt;br /&gt;
* The astrophotographer is tossing several tiny models of the ISS to also appear in front of the Sun.&lt;br /&gt;
* A falcon is flying in front of the Sun, presumably intending to capture prey, in such a way that it appears to be snatching the real ISS out of the fakes.&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 and Megan stand on a hill with the sun behind them. Cueball is at the top-left of the hill, holding a bow in his left arm, which has been recently shot, with the arrow to right. Megan is at the bottom-right of the hill, juggling some balls. There are two planes going in opposite directions with banners on them. Above the planes is the ISS. All these items are silhouetted against the sun partially eclipsed by the moon in the upper right.]&lt;br /&gt;
&lt;br /&gt;
:[Banners]: Nice Shot&lt;br /&gt;
&lt;br /&gt;
:[Caption beneath the panel]:&lt;br /&gt;
:Our astrophotography community's one-upmanship is getting out of hand.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
Randall has commented on extreme photography in comics [[1855: Telephoto]] and [[1719: Superzoom]], and the ''How To'' chapter &amp;quot;How to take a selfie&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Space]]&lt;/div&gt;</summary>
		<author><name>162.158.88.62</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1618:_Cold_Medicine&amp;diff=211459</id>
		<title>1618: Cold Medicine</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1618:_Cold_Medicine&amp;diff=211459"/>
				<updated>2021-05-03T13:15:38Z</updated>
		
		<summary type="html">&lt;p&gt;162.158.88.62: /* Explanation */ oops&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1618&lt;br /&gt;
| date      = December 18, 2015&lt;br /&gt;
| title     = Cold Medicine&lt;br /&gt;
| image     = cold_medicine.png&lt;br /&gt;
| titletext = Seriously considering buying some illegal drugs to try to turn them back into cold medicine.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
In this comic [[Cueball]] is probably representing [[Randall]] who seems to have been suffering from a long lasting {{w|Common cold|cold}} that he just can't get rid of. Two weeks before this comic Randall posted another comic about how a cold works: [[1612: Colds]]. This is also supported by the way the title text is phrased to make it sound like something Randall writes, disconnected with the action in the comic (see below).&lt;br /&gt;
&lt;br /&gt;
The comic was released in December, and since Randall is living in {{w|Massachusetts}} in the {{w|Geographical zone|North Temperate Zone}} he, and everyone else living in this zone, is very likely to catch a cold at least at some point during fall and winter.&lt;br /&gt;
&lt;br /&gt;
In the comic Cueball is evidently suffering from a cold and he is searching the shelves labeled cold and {{w|Influenza|Flu}} at a {{w|pharmacy}} for any kind of '''cold medicine''' (hence the title), to alleviate his symptoms. Note that this is all he can hope for, as there are still {{w|Common_cold#Management|no cure}} that really helps getting rid of the cold any faster. All medication can do is help relieving the symptoms until the body's own {{w|immune system}} takes care of the relatively harmless cold virus.&lt;br /&gt;
&lt;br /&gt;
After looking at several different options Cueball is clearly unsatisfied with what he finds. Either he doesn't feel that any of the unmonitored drugs available on the serve-yourself-shelf is useful, or he is actually too sick to properly ascertain which medicine he needs. In the end he approaches the counter and asks the {{w|pharmacist}} ([[Ponytail]]) to give him one of every kind of cold medicine which requires an ID to purchase. Two years later Randall finds a solution for Cueball's problem with a new cold medicine with only active ingredients, including among other all the active ingredients from all the cold medicines on the market, see [[1896: Active Ingredients Only]].&lt;br /&gt;
&lt;br /&gt;
'''Warning:''' {{tvtropes|ArtisticLicenseMedicine|Taking lots of different medicines together in real life could harm, or even kill you}}, because certain combinations of medications interact in ways that make them dangerous or even lethal.&lt;br /&gt;
&lt;br /&gt;
Back in the comic, Ponytail tries to warn Cueball of another danger, that by simply ''purchasing'' so much cold medicine he would end up on a law enforcement watchlist, presumably one of the government agencies ({{w|DEA}}, {{w|FBI}}, {{w|CIA}} etc.) But she never gets to finish her sentence because Cueball is beyond caring and tells her this.&lt;br /&gt;
&lt;br /&gt;
In the USA, cold medicines containing {{w|pseudoephedrine}} are kept behind the counter and IDs purchasing them are monitored, because pseudoephedrine can be used to make the {{w|List of Schedule I drugs (US)|scheduled}} drug {{w|methamphetamine}} or meth (a more hydrophobic - and thus potent - version of {{w|amphetamine}}). However, it is also an extremely effective {{w|decongestant}} (a pharmaceutical drug that is used to relieve {{w|nasal congestion}}/plugged nose), much more so than the common substitutes such as {{w|phenylephrine}} and {{w|oxymetazoline}} which have no clinically proven decongestant effect. &lt;br /&gt;
&lt;br /&gt;
This could be one reason why Cueball just requests all kinds of cold medicines of amongst other this type; he does not appear to care what exactly he is purchasing, believing that his one criterion will provide him medicine powerful enough for his illness. It may also be that he is just too sick to care or realize that this will arouse suspicion of him being a drug dealer, or to recognize the need to select only one medication of these type.&lt;br /&gt;
&lt;br /&gt;
This could be a reference to the medicine with the brand name {{w|Sudafed}}, sold as an over the counter decongestants with pseudoephedrine as the active ingredient. Now the manufacturer also sells a different type of medicine with the same brand name without pseudoephedrine, but with phenylephrine, which seems to be much less effective. If you buy this off the shelf (where it can be sold because it does not contain methamphetamine precursors) then you could easily get home with the once effective Sudafed, only to realize later that it does not alleviate any symptoms. This could offer another explanation for Cueball's request and outburst in the final panel.&lt;br /&gt;
&lt;br /&gt;
The title text seems to be Randall's own comment on how badly he is affected by his cold. He thus, humorously, suggests that he is now ready to purchase illegal drugs (this would then be ''meth'') in order to turn it back into a cold medicine (i.e. pseudoephedrine). This would not be safe to do, but may be a reference to this spoof paper: ''[http://heterodoxy.cc/ A Simple and Convenient Synthesis of Pseudoephedrine From N-Methylamphetamine''], a take on the long-going joke about the recent difficulty in obtaining pseudoephedrine, i.e. it is now easier to get your hands on the illegal drug made from it. &lt;br /&gt;
&lt;br /&gt;
It is a humorous exaggeration of how far Randall is willing to go to get the best cold medicine, and the potency of the drugs needed to treat his apparently debilitating illness. There are many illegal drugs that when first synthesized were planned to be used as a medical drug, but then later abused by drug addicts, but given the subject of the comic, the title text obviously refers to meth.&lt;br /&gt;
&lt;br /&gt;
Randall continued in the medical world with the next comic: [[1619: Watson Medical Algorithm]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is standing in a drug store, with a drug in his hand he has taken from the shelf he is standing next to. The shelf is labeled.]&lt;br /&gt;
:Cueball: *Sniffle*&lt;br /&gt;
:Label: Cold &amp;amp; Flu&lt;br /&gt;
&lt;br /&gt;
:[Cueball is standing alone, examining some medicine he is holding up, while having some other medicine in the other hand.]&lt;br /&gt;
:Cueball: *Cough*&lt;br /&gt;
:Cueball: *Sniff*&lt;br /&gt;
&lt;br /&gt;
:[Cueball continues examining more medicine. Looking down on one in his hand, having another in the other hand and there are also three packages at his feet.]&lt;br /&gt;
:Cueball: Ughhh...&lt;br /&gt;
&lt;br /&gt;
:[Cueball is at the labeled counter in the drug store with computer etc. Ponytail is behind the counter.]&lt;br /&gt;
:Counter label: Sale&lt;br /&gt;
:Cueball: Just gimme one of every kind of cold medicine you need ID to buy.&lt;br /&gt;
:Ponytail: You'll go on the watchlist for—&lt;br /&gt;
:Cueball: Don't care.&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;/div&gt;</summary>
		<author><name>162.158.88.62</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1618:_Cold_Medicine&amp;diff=211458</id>
		<title>1618: Cold Medicine</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1618:_Cold_Medicine&amp;diff=211458"/>
				<updated>2021-05-03T13:15:10Z</updated>
		
		<summary type="html">&lt;p&gt;162.158.88.62: /* Explanation */ fix broken link&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1618&lt;br /&gt;
| date      = December 18, 2015&lt;br /&gt;
| title     = Cold Medicine&lt;br /&gt;
| image     = cold_medicine.png&lt;br /&gt;
| titletext = Seriously considering buying some illegal drugs to try to turn them back into cold medicine.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
In this comic [[Cueball]] is probably representing [[Randall]] who seems to have been suffering from a long lasting {{w|Common cold|cold}} that he just can't get rid of. Two weeks before this comic Randall posted another comic about how a cold works: [[1612: Colds]]. This is also supported by the way the title text is phrased to make it sound like something Randall writes, disconnected with the action in the comic (see below).&lt;br /&gt;
&lt;br /&gt;
The comic was released in December, and since Randall is living in {{w|Massachusetts}} in the {{w|Geographical zone|North Temperate Zone}} he, and everyone else living in this zone, is very likely to catch a cold at least at some point during fall and winter.&lt;br /&gt;
&lt;br /&gt;
In the comic Cueball is evidently suffering from a cold and he is searching the shelves labeled cold and {{w|Influenza|Flu}} at a {{w|pharmacy}} for any kind of '''cold medicine''' (hence the title), to alleviate his symptoms. Note that this is all he can hope for, as there are still {{w|Common_cold#Management|no cure}} that really helps getting rid of the cold any faster. All medication can do is help relieving the symptoms until the body's own {{w|immune system}} takes care of the relatively harmless cold virus.&lt;br /&gt;
&lt;br /&gt;
After looking at several different options Cueball is clearly unsatisfied with what he finds. Either he doesn't feel that any of the unmonitored drugs available on the serve-yourself-shelf is useful, or he is actually too sick to properly ascertain which medicine he needs. In the end he approaches the counter and asks the {{w|pharmacist}} ([[Ponytail]]) to give him one of every kind of cold medicine which requires an ID to purchase. Two years later Randall finds a solution for Cueball's problem with a new cold medicine with only active ingredients, including among other all the active ingredients from all the cold medicines on the market, see [[1896: Active Ingredients Only]].&lt;br /&gt;
&lt;br /&gt;
'''Warning:''' {{tvtropes|ArtisticLicenseMedicine|Taking lots of different medicines together in real life could harm, or even kill you}}, because certain combinations of medications interact in ways that make them dangerous or even lethal.&lt;br /&gt;
&lt;br /&gt;
Back in the comic, Ponytail tries to warn Cueball of another danger, that by simply ''purchasing'' so much cold medicine he would end up on a law enforcement watchlist, presumably one of the government agencies ({{w|DEA}}, {{w|FBI}}, {{w|CIA}} etc.) But she never gets to finish her sentence because Cueball is beyond caring and tells her this.&lt;br /&gt;
&lt;br /&gt;
In the USA, cold medicines containing {{w|pseudoephedrine}} are kept behind the counter and IDs purchasing them are monitored, because pseudoephedrine can be used to make the {{w|List of Schedule I drugs (US)|scheduled}} drug {{w|methamphetamine}} or meth (a more hydrophobic - and thus potent - version of {{w|amphetamine}}). However, it is also an extremely effective {{w|decongestant}} (a pharmaceutical drug that is used to relieve {{w|nasal congestion}}/plugged nose), much more so than the common substitutes such as {{w|phenylephrine}} and {{w|oxymetazoline}} which have no clinically proven decongestant effect. &lt;br /&gt;
&lt;br /&gt;
This could be one reason why Cueball just requests all kinds of cold medicines of amongst other this type; he does not appear to care what exactly he is purchasing, believing that his one criterion will provide him medicine powerful enough for his illness. It may also be that he is just too sick to care or realize that this will arouse suspicion of him being a drug dealer, or to recognize the need to select only one medication of these type.&lt;br /&gt;
&lt;br /&gt;
This could be a reference to the medicine with the brand name {{w|Sudafed}}, sold as an over the counter decongestants with pseudoephedrine as the active ingredient. Now the manufacturer also sells a different type of medicine with the same brand name without pseudoephedrine, but with phenylephrine, which seems to be much less effective. If you buy this off the shelf (where it can be sold because it does not contain methamphetamine precursors) then you could easily get home with the once effective Sudafed, only to realize later that it does not alleviate any symptoms. This could offer another explanation for Cueball's request and outburst in the final panel.&lt;br /&gt;
&lt;br /&gt;
The title text seems to be Randall's own comment on how badly he is affected by his cold. He thus, humorously, suggests that he is now ready to purchase illegal drugs (this would then be ''meth'') in order to turn it back into a cold medicine (i.e. pseudoephedrine). This would not be safe to do, but may be a reference to this spoof paper: ''[http://heterodoxy.cc/m A Simple and Convenient Synthesis of Pseudoephedrine From N-Methylamphetamine''], a take on the long-going joke about the recent difficulty in obtaining pseudoephedrine, i.e. it is now easier to get your hands on the illegal drug made from it. &lt;br /&gt;
&lt;br /&gt;
It is a humorous exaggeration of how far Randall is willing to go to get the best cold medicine, and the potency of the drugs needed to treat his apparently debilitating illness. There are many illegal drugs that when first synthesized were planned to be used as a medical drug, but then later abused by drug addicts, but given the subject of the comic, the title text obviously refers to meth.&lt;br /&gt;
&lt;br /&gt;
Randall continued in the medical world with the next comic: [[1619: Watson Medical Algorithm]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is standing in a drug store, with a drug in his hand he has taken from the shelf he is standing next to. The shelf is labeled.]&lt;br /&gt;
:Cueball: *Sniffle*&lt;br /&gt;
:Label: Cold &amp;amp; Flu&lt;br /&gt;
&lt;br /&gt;
:[Cueball is standing alone, examining some medicine he is holding up, while having some other medicine in the other hand.]&lt;br /&gt;
:Cueball: *Cough*&lt;br /&gt;
:Cueball: *Sniff*&lt;br /&gt;
&lt;br /&gt;
:[Cueball continues examining more medicine. Looking down on one in his hand, having another in the other hand and there are also three packages at his feet.]&lt;br /&gt;
:Cueball: Ughhh...&lt;br /&gt;
&lt;br /&gt;
:[Cueball is at the labeled counter in the drug store with computer etc. Ponytail is behind the counter.]&lt;br /&gt;
:Counter label: Sale&lt;br /&gt;
:Cueball: Just gimme one of every kind of cold medicine you need ID to buy.&lt;br /&gt;
:Ponytail: You'll go on the watchlist for—&lt;br /&gt;
:Cueball: Don't care.&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;/div&gt;</summary>
		<author><name>162.158.88.62</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2050:_6/6_Time&amp;diff=163250</id>
		<title>2050: 6/6 Time</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2050:_6/6_Time&amp;diff=163250"/>
				<updated>2018-09-25T07:15:45Z</updated>
		
		<summary type="html">&lt;p&gt;162.158.88.62: added Roman Empire as example&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2050&lt;br /&gt;
| date      = September 24, 2018&lt;br /&gt;
| title     = 6/6 Time&lt;br /&gt;
| image     = 6_6_time.png&lt;br /&gt;
| titletext = You know how Einstein figured out that the speed of light was constant, and everything else had to change for consistency? My theory is like his, except not smart or good.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
The original image has a link to a previous comic [https://xkcd.com/1061/ 1061: EST] which is explained [[1061: EST|here]].&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
&lt;br /&gt;
{{incomplete|Please edit the explanation below and only mention here why it isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
[[File:edo_clock.jpg|thumb|An image of a Japanese mechanical clock, here showing two different hour schema for Japanese summer and winter, from the Seiko museum's collection. (Base units in this system are twice as long as Western hours and are denoted by the larger moving symbols on the dial edge.)]]&lt;br /&gt;
&lt;br /&gt;
Cueball here suggests a regional time system similar to that used in many societies prior to the invention of [https://www.scientificamerican.com/article/experts-time-division-days-hours-minutes/ mechanical time keeping], such as [https://wiki.samurai-archives.com/index.php?title=Telling_Time Japan during the Edo period] or the [https://en.wikipedia.org/wiki/Roman_timekeeping Roman Empire], where the day is separated into two parts based on night and day and then subdivided by hour, minute, and second to give season-variable lengths for each. However Cueball's suggestions (where time shifts based not just on longitude but also on latitude, and seconds are variable in length so that day and night are always 6 hours long) are downright absurd. The caption lays out the punchline: Randall, represented by Cueball, has very strong feelings and opinions on how standards of time ''should'' be measured, but as bad as he believes the official standards are he also recognizes that his own rules would not be popular with other people. After coming to recognize this he has made a hobby or game out of making the worst possible system of measuring time and sharing them with other people.&lt;br /&gt;
&lt;br /&gt;
The caption, though vague, can also be assumed to relate to the gradual deviation of certain regions from the Coordinated Universal Time zones with &amp;quot;Daylight Savings Time&amp;quot; that is observed inconsistently and smaller regions opting for awkward fractional increments of deviation from Greenwich Mean Time.&lt;br /&gt;
&lt;br /&gt;
The title text refers to Einstein's {{w|Special relativity|special theory of relativity}} which postulates that the speed of light is the same for all observers, regardless of the motion of the light source (or the observers). An observer at high speed measures the same speed of light as an observer with no motion, measured from the same light source. In classical physics the speed of the moving observer would be added up but in special relativity this isn't true, instead the time runs slower for the moving observer. And additional to this {{w|Time dilation|time dilation}} there is also a {{w|Length contraction|length contraction}} without which the geometry wouldn't work.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:[Cueball and White Hat are walking.]&lt;br /&gt;
:Cueball: Under my time system, the sun rises at 6 am and it sets at 6 pm, as it '''''should'''''.&lt;br /&gt;
:Cueball: The length of the second is different each day and night, and the current time shifts with your latitude and longitude.&lt;br /&gt;
:Cueball: Today is one of the two days each year when my clocks run at the same speed as everyone else's.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
:Time standards are so unfixably messy and complicated that at this point my impulse is just to try to make them worse.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
* In the title text, &amp;quot;Einstein&amp;quot; was originally &amp;quot;einstein&amp;quot;.&lt;br /&gt;
* This method is also named &amp;quot;temporal hour&amp;quot; [[https://en.wiktionary.org/wiki/temporal_hour]]&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring White Hat]]&lt;br /&gt;
[[Category:Physics]]&lt;br /&gt;
[[Category:Astronomy]]&lt;br /&gt;
[[Category:Time]]&lt;/div&gt;</summary>
		<author><name>162.158.88.62</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1821:_Incinerator&amp;diff=138500</id>
		<title>Talk:1821: Incinerator</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1821:_Incinerator&amp;diff=138500"/>
				<updated>2017-04-08T06:01:37Z</updated>
		
		<summary type="html">&lt;p&gt;162.158.88.62: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~--&amp;gt;&lt;br /&gt;
The crisis could come from a more abstract feeling thinking of the incinerating/trash devices as Ouroboros, serpents biting their own tail or nilpotent matrices. Nothing would be left. Sebastian --[[Special:Contributions/162.158.88.62|162.158.88.62]] 06:01, 8 April 2017 (UTC)&lt;/div&gt;</summary>
		<author><name>162.158.88.62</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1806:_Borrow_Your_Laptop&amp;diff=136349</id>
		<title>Talk:1806: Borrow Your Laptop</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1806:_Borrow_Your_Laptop&amp;diff=136349"/>
				<updated>2017-03-03T12:00:12Z</updated>
		
		<summary type="html">&lt;p&gt;162.158.88.62: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~--&amp;gt;&lt;br /&gt;
One assumes this is a software development environment or similar&lt;br /&gt;
&lt;br /&gt;
{|&lt;br /&gt;
!Statement&lt;br /&gt;
!Explanation&lt;br /&gt;
|-&lt;br /&gt;
|Oh, just hit both shift keys to change over to QWERTY.&lt;br /&gt;
| Likely has keyboard in DVORAK &lt;br /&gt;
|-&lt;br /&gt;
|Caps lock is control. And spacebar is capslock.&lt;br /&gt;
| Changing Caps Lock to a &amp;quot;more useful&amp;quot; key is common. However to change an even larger key to be capslock (Space) is odd&lt;br /&gt;
|-&lt;br /&gt;
|And two-finger scroll moves through time instead of space.&lt;br /&gt;
|Two finger scrolling is often used to move through a document or application on a mousepad or touchscreen device - this could be seen as moving through space (despite the cursor not actually being real). Randall is presumerably making a comment re: Space Time continuum or similar?&lt;br /&gt;
|-&lt;br /&gt;
|Once I've used a computer for a while no one else will ever use it again.&lt;br /&gt;
|It is unlikely that any user who tries using a computer configured like this would be expecting it and would find the workflow very hard - they are unlikely to ask again to use Cueball's computer&lt;br /&gt;
|}&lt;br /&gt;
[[Special:Contributions/141.101.99.197|141.101.99.197]] 07:55, 3 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Just a minor point QWERTY is not the standard &amp;quot;Roman&amp;quot; keyboard but &amp;quot;English&amp;quot; as &amp;quot;French&amp;quot; is AZERTY and German is something else. The other thing is that just the change from US to UK can really mess things up, $&amp;gt;£ is trivial as @ not only moves, but the symbol keys all seem to do different things. [[User:RIIW - Ponder it|RIIW - Ponder it]] ([[User talk:RIIW - Ponder it|talk]]) 08:58, 3 March 2017 (UTC)&lt;br /&gt;
:Yeah, in the UK I often have to use a Windows box misconfigured as US, where @ is in the wrong place.  At work, one had a postit note explaining how to get the @ symbol, until I spent all of 5 seconds fixing it.  Worse though is Apple, who insist on using US keyboard layout even in the UK. [[User:Cosmogoblin|Cosmogoblin]] ([[User talk:Cosmogoblin|talk]]) 09:24, 3 March 2017 (UTC)&lt;br /&gt;
::Have tried to change this. I have a keyboard that has qwerty at the top, but it is not English as we have letters not used in the English language (ÆØÅ) which moved all kinds of other keys around. So we can type on an English qwerty keyboard, but not find all the special keys. The layout is though still called qwerty, albeit the Danish version. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 09:40, 3 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
I'm surprised that no one has pointed out the impossibility of changing from DVORAK to QWERTY by pressing both shift keys, seeing as most laptops have hardware keyboards.&lt;br /&gt;
unless he has somehow rigged a voltronesque keyboard or he has a touchscreen keyboard or an onscreen one.&lt;br /&gt;
[[User:Dudeonyx|Dudeonyx]] ([[User talk:Dudeonyx|talk]]) 09:20, 3 March 2017 (UTC)&lt;br /&gt;
: Dvorak users typically just change the keymap. Since it's designed for touch typing,there's no real point to lettering on the keys [[User:Luckykaa|Luckykaa]] ([[User talk:Luckykaa|talk]]) 09:36, 3 March 2017 (UTC)&lt;br /&gt;
::(Wrote this before Luckykaa posted but had an edit conflict with him so only replies to the first comment here:)&lt;br /&gt;
::The keyboard is probably QWERTY but the keys assigned to these are in the dvorak layout. If Cueball can type ten fingered dvorak blindly then it is no concern for him that the keys would give a different letter than what is on the keys! See other dvorak comics as referenced in the explanation. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 09:40, 3 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
The part &amp;quot;The next point on the list makes little sense&amp;quot; is not exactly true. Swapping caps lock with ctrl is actually quite common (if extravagant), google it. Some do it because they are used to some old layout (probably either pre-PC era or from the Unix world, see some Sun keyboards from the 90s). Most do it because ctrl is useful but small (especially on laptops), while caps lock is a large, rarely used key. Opinions on the ergonomy of this vary, trending towards negative, although there certainly are avid supporters.&lt;br /&gt;
&lt;br /&gt;
So, the line actually starts like something you may actually hear in real life (I know I have). And then you get to... SPACE?!? Why would you turn space into a caps lock?! That's where the joke hits. It's not that the whole point of the list makes little sense, it's that it takes an existing, somewhat justified but controversial idea and turns it on its head midway through. --[[Special:Contributions/162.158.102.76|162.158.102.76]] 09:29, 3 March 2017 (UTC)&lt;br /&gt;
:Is that not also what is made clear in the explanation now? It is not the only joke with the last being the scroll time travel. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 09:40, 3 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Apple has a feature actually called time machine to go back to old file versions. Sebastian --[[Special:Contributions/162.158.88.62|162.158.88.62]] 12:00, 3 March 2017 (UTC)&lt;/div&gt;</summary>
		<author><name>162.158.88.62</name></author>	</entry>

	</feed>