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		<updated>2026-04-12T08:45:23Z</updated>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2466:_In_Your_Classroom&amp;diff=212401</id>
		<title>2466: In Your Classroom</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2466:_In_Your_Classroom&amp;diff=212401"/>
				<updated>2021-05-24T11:11:59Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Table of subjects */ no citation needed, this is patently obvious with simple math and common sense&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2466&lt;br /&gt;
| date      = May 21, 2021&lt;br /&gt;
| title     = In Your Classroom&lt;br /&gt;
| image     = in_your_classroom.png&lt;br /&gt;
| titletext = Ontology is way off to the left and geography is way off to the right.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a QUASAR IN YOUR CLASSROOM. The table is still a work in progress. Do NOT delete this tag too soon.}}&lt;br /&gt;
[[Randall]] has created a thought experiment and corresponding chart about school courses. The idea is, &amp;quot;the subject of the class appears in the classroom&amp;quot; and the chart compares how dangerous and how unusual that would be. &lt;br /&gt;
&lt;br /&gt;
In the title text two points that are off the chart to the left and right are also mentioned. See details about all the subjects in the [[#Table of subjects|table]] below.&lt;br /&gt;
&lt;br /&gt;
Note that Randall uses similar diagrams in each of [[388: Fuck Grapefruit]], [[1242: Scary Names]] and [[1501: Mysteries]], which also contain different items. They  also have extra points mentioned in the title text. In the first two comics the points are also off the chart, whereas for the last the description of the point is too long to fit on the chart. Extra info outside the chart is also used in the title text of [[1785: Wifi]], but this is a line graph.&lt;br /&gt;
&lt;br /&gt;
==Table of subjects==&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
|+Breakdown of Subjects&lt;br /&gt;
|-&lt;br /&gt;
!Course Topic&lt;br /&gt;
!Weirdness&lt;br /&gt;
!Badness&lt;br /&gt;
!Explanation&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Atmospheric Physics&lt;br /&gt;
|0%&lt;br /&gt;
|0%&lt;br /&gt;
|The presence of atmosphere in the classroom is quite common, as humans require the presence of an atmosphere to remain alive, and humans cannot learn while dead.{{Citation needed}}&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Ethics&lt;br /&gt;
|25%&lt;br /&gt;
|0%&lt;br /&gt;
|Ethical thinking and behavior are widely considered good and should normally be present in education, but are sadly not universal.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Education&lt;br /&gt;
|0%&lt;br /&gt;
|10%&lt;br /&gt;
|Learning usually goes on in classrooms, so education as a concept is both being learned about and present in the form of learning itself.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Bibliography&lt;br /&gt;
|25%&lt;br /&gt;
|7%&lt;br /&gt;
|Bibliography is the study of books, and books are normally present in classrooms, particularly bibliography classrooms.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Human Physiology&lt;br /&gt;
|0%&lt;br /&gt;
|20%&lt;br /&gt;
|This comic assumes that there are humans learning in the classroom, which was true at the time this comic was published, although in many places at the time the comic was published, many classrooms were closed due to COVID-19 restrictions.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Public Speaking&lt;br /&gt;
|25%&lt;br /&gt;
|15%&lt;br /&gt;
|Some classes require students to present things in front of the class, which is likely a requirement in a public speaking class. Thus, public speaking itself would be present in the class.&lt;br /&gt;
Some classes also have a teacher talking or presenting to the students from the front of the class, another form of public speaking.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Architecture&lt;br /&gt;
|0%&lt;br /&gt;
|30%&lt;br /&gt;
|All buildings can be considered architecture, and most classes take place in buildings. This comic also refers to a class''room'', which is a room, and therefore considered architecture.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Library Science&lt;br /&gt;
|25%&lt;br /&gt;
|25%&lt;br /&gt;
|Library science is concerned with the organization of knowledge, and is useful for finding information. Many classes require research papers that require the use of books and other sources of information to complete them.  This would be even more appropriate for a class actually taught in the school library.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Furniture Design&lt;br /&gt;
|0%&lt;br /&gt;
|40%&lt;br /&gt;
|Most rooms have furniture,{{Citation needed}} so this would probably be present in a classroom&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Culinary Arts&lt;br /&gt;
|40%&lt;br /&gt;
|30%&lt;br /&gt;
|Most studies of culinary arts include the teacher and/or students preparing food using the tools and/or techniques that have been taught, so it would be fairly normal for food to be a result of classroom activities.  How ''good'' it is, however, can be a mixed bag, especially for student cooking attempts.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Ergonomics&lt;br /&gt;
|5%&lt;br /&gt;
|45%&lt;br /&gt;
|Ergonomic equipment and workspaces promote comfort and efficiency, while non-ergonomic ones may be unpleasant, unhealthy, or even immediately dangerous.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Botany&lt;br /&gt;
|40%&lt;br /&gt;
|40%&lt;br /&gt;
|The near-neutral position of Botany (aka Plant Biology) obscures a wide range of possible outcomes, from the banal to the malignant. A teacher might have brought in a potted plant for decoration or show-n-tell, which would have zero weirdness and (if a non-allergenic species) zero danger. Or, a tree might have fallen through the roof, highly dangerous and weird, especially if it occurred during calm weather (weather likely to result in trees falling would probably have closed the school prior to treefall). This assumes that the event involves a vegetable and not an element of consumerism or purchasing.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|20th Century Authors&lt;br /&gt;
|65%&lt;br /&gt;
|10%&lt;br /&gt;
|A literature class would, normally, benefit greatly from an open discussion or interview with the author himself. Sadly such things are rare. Authors who were published in the 20th century would mostly be in retirement age in 2021, so securing an interview with them could be somewhat difficult.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Exobiology&lt;br /&gt;
|100%&lt;br /&gt;
|0%&lt;br /&gt;
|Exobiology is the study of extraterrestrial life. This would mean that an alien life-form was in the classroom.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|21st Century Authors&lt;br /&gt;
|60%&lt;br /&gt;
|20%&lt;br /&gt;
|21st century authors have the advantage (over 19th and 20th century authors) of being alive and active at the time this comic was published. However, few of those born during the century have had time to achieve professional success, while those who have published in the 21st century mostly await final literary judgement on their work. Those authors with sufficient notoriety to be welcome in a classroom might charge appearance fees that schools cannot afford, and might, regardless of money, only agree to appear via virtual conference - hence, an elevated weirdness score. Dangers of an actual physical appearance include COVID risk and possible clashes between an author's activist stance and school policies.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|19th Century Authors&lt;br /&gt;
|100%&lt;br /&gt;
|15%&lt;br /&gt;
|Like other authors, the class would benefit from having an actual author show up, but this would be extremely weird since no 19th century author is still alive.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Paleontology&lt;br /&gt;
|100%&lt;br /&gt;
|25%&lt;br /&gt;
|Paleontology is the study of the history of life on Earth as based on fossils. In geology classes, it would be normal to have some fossils in the classroom. However, fossils are not usually found in other classrooms, and especially below the college level. Randall is also probably implying the weirdness of finding a live ''Jurassic Park''-style dinosaur. &lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Robotics&lt;br /&gt;
|55%&lt;br /&gt;
|30%&lt;br /&gt;
|A course on robotics would often be expected to have some form of working models of the robots being discussed.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Martian Soil Chemistry&lt;br /&gt;
|100%&lt;br /&gt;
|35%&lt;br /&gt;
|Martian soil only reaches Earth in small amounts, so it would be unusual to find a meaningful amount anywhere, except Mars.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Tourism&lt;br /&gt;
|75%&lt;br /&gt;
|40%&lt;br /&gt;
|Tourists coming into an active classroom would be quite unusual. It could refer to the students leaving to become tourists in another location.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Child Psychology&lt;br /&gt;
|60%&lt;br /&gt;
|45%&lt;br /&gt;
|Child study is the study of the psychological processes of children and how they differ from those of adults. It could mean one group of children in the class analyzing the behaviour of the other group and vice versa, which could mean each student has their own interpretation of the other group's behaviour, or it could mean that the teacher analyses the behaviour of the children and explaining it, which could mean a psychologist has to be involved.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Entomology&lt;br /&gt;
|15%&lt;br /&gt;
|55%&lt;br /&gt;
|Insects in the classroom. Some introductions, such as monarch butterfly caterpillars, are deliberate (to teach metamorphosis), and so normal and good. Ants commonly enter classrooms. An infestation of pharaoh ants is commonplace and relatively benign; of fire ants, commonplace in some places but concerning; of army ants, weird in most places and dangerous. See also Pest Control.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Occupational Therapy&lt;br /&gt;
|10%&lt;br /&gt;
|62%&lt;br /&gt;
|Injury, illness or mental health problem that hinder your participation in life/school.  Many students who have significant physical injuries and conditions that require occupational therapy would generally not engage in those activities during a class, although volunteers may be brought in as a demonstration of a particular health problem or method of treatment.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Hydraulic Engineering&lt;br /&gt;
|40%&lt;br /&gt;
|62%&lt;br /&gt;
|Likely in the form of flooding or plumbing problems.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Pest Control&lt;br /&gt;
|25%&lt;br /&gt;
|70%&lt;br /&gt;
|Pests may be naturally present in the building, depending on age and level of maintenance done, so students may get the opportunity to partake in some informal pest-control methods during class (such as killing via blunt-force impact). Professional pest control, however, usually involves using harmful chemicals as a method of mass extermination, limiting the ability of students to observe the process, besides causing unhealthy exposure to large amounts of pesticides. (Although, watching a professional pest controller at work would be an immense boon to students studying the topic). &lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Foodborne Illness&lt;br /&gt;
|15%&lt;br /&gt;
|80%&lt;br /&gt;
|Sometimes students in a culinary arts class do not properly observe hygiene standards and the food they present would lead to illness in those that consume the food.  Thankfully, this is rare if the teacher is paying enough attention to proceedings. Students could also be ill from food eaten outside of class.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Criminal Law&lt;br /&gt;
|45%&lt;br /&gt;
|85%&lt;br /&gt;
|This might happen if a crime occurs in the class.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Physiology of Stress&lt;br /&gt;
|0%&lt;br /&gt;
|90%&lt;br /&gt;
|This would be a sign of stress severe enough to affect bodily functions, likely to an unhealthy extent.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Oncology&lt;br /&gt;
|25%&lt;br /&gt;
|100%&lt;br /&gt;
|Someone in the room likely has cancer.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Ornithology&lt;br /&gt;
|60%&lt;br /&gt;
|55%&lt;br /&gt;
|[https://en.wikipedia.org/wiki/The_Birds_(film) Birds] in the classroom?&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Animation&lt;br /&gt;
|100%&lt;br /&gt;
|56%&lt;br /&gt;
|Examples of animated works might be displayed to the students in an animation class. It would be weird for animated characters to appear physically in the classroom instead of being projected on screens. Possibly a reference to the game Bendy and the Ink Machine, which, if it appeared in the classroom, would be very weird and very bad.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Petroleum Geology&lt;br /&gt;
|65%&lt;br /&gt;
|60%&lt;br /&gt;
|Crude oil coming up through the floor of the classroom would be ''very'' weird.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Highway Engineering&lt;br /&gt;
|75%&lt;br /&gt;
|65%&lt;br /&gt;
|A highway being built through an active classroom would be very unusual and not that safe.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Toxicology&lt;br /&gt;
|55%&lt;br /&gt;
|75%&lt;br /&gt;
|Most likely, a toxic substance is present in the room. This is not very weird if the room is in a building that has asbestos-containing insulation (typically associated with buildings constructed before the 1990s, although it has not been specifically outlawed) or lead paint (which was fully outlawed in 1978, so any paint must have been applied prior to that date). However, toxic substances are, by definition, unsafe for humans (even students).&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Hematology&lt;br /&gt;
|75%&lt;br /&gt;
|70%&lt;br /&gt;
|Hematology is the study of blood. Given that there should be blood in each of the students present{{Citation needed}}, we should probably assume Randall means &amp;quot;large quantities of blood outside of one's body&amp;quot;, which would indeed be both bad and weird.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Hostage Negotiation&lt;br /&gt;
|70%&lt;br /&gt;
|85%&lt;br /&gt;
|Reasons as to why there would be hostage negotiations taking place at a school have horrifying implications for the students and teacher.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|History of Siege Warfare&lt;br /&gt;
|100%&lt;br /&gt;
|80%&lt;br /&gt;
|This would mean that the students would be trapped in the building until they ran out of resources, possibly dying of thirst and starvation (depending on whether or not the opposing army destroyed the school's water lines). As an alternative, the classroom could be hit by a boulder hurled from a trebuchet, which would be weird and bad in an entirely different way.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Trauma Surgery&lt;br /&gt;
|55%&lt;br /&gt;
|95%&lt;br /&gt;
|Trauma surgery is an incredibly painful procedure, and difficult to look at for many. It would undoubtedly be disturbing to the class, especially if the patient was one of them.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Volcanology&lt;br /&gt;
|75%&lt;br /&gt;
|95%&lt;br /&gt;
|Having a live volcano in one's classroom is both very dangerous and very weird {{Citation needed}}. Volcanoes mature over very long time frames, but even the earliest stages are highly disruptive and potentially deadly, as seen in the [https://en.wikipedia.org/wiki/Par%C3%ADcutin#Formation 1943 eruption of Paricutín] and the [https://en.wikipedia.org/wiki/2018_lower_Puna_eruption#Eruption 2018 flank eruption of Kilauea]. Note this also applies to [[1611: Baking Soda and Vinegar | baking soda and vinegar volcanoes that are offshoots of much larger vinegar hotspots]].&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Quasar Astronomy&lt;br /&gt;
|75%&lt;br /&gt;
|100%&lt;br /&gt;
|Quasars are distant astronomical objects that release large amounts of energy. Not only would the power of a quasar destroy the classroom (as well as the rest of Earth,) quasars are too large to fit inside any known classroom. For example, [https://en.wikipedia.org/wiki/ULAS_J1342%2B0928 ULAS J1342+0928] has a mass of 8*10^8 solar masses. This means the event horizon of the black hole is almost 16 AU in radius, and this size does not include the accretion disk. &lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Ontology (Title Text)&lt;br /&gt;
|&amp;lt;0%&lt;br /&gt;
|?&lt;br /&gt;
|Ontology is the philosophical study of existence and being. Since there must be ''something'' learning in the classroom, it is unsurprising that ontology is a normal subject to appear in the classroom.&lt;br /&gt;
|-&lt;br /&gt;
&lt;br /&gt;
!scope=row|Geography (Title Text)&lt;br /&gt;
|&amp;gt;100%&lt;br /&gt;
|?&lt;br /&gt;
|Logistics aside, having a planet's terrain newly appear in one's classroom would almost certainly be a distraction to the learning environment.&lt;br /&gt;
&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;
:[Caption above scatter plot with labeled axes]&lt;br /&gt;
:Caption: The thing you study just showed up in your classroom! That's...&lt;br /&gt;
:Upper y-axis label: Good&lt;br /&gt;
:Lower y-axis label: Bad&lt;br /&gt;
:Upper x-axis label: Normal&lt;br /&gt;
:Lower x-axis label: Weird&lt;br /&gt;
&lt;br /&gt;
:[First quadrant (left to right, top to bottom):]&lt;br /&gt;
:20th century authors&lt;br /&gt;
:Exobiology&lt;br /&gt;
:21st century authors&lt;br /&gt;
:19th century authors&lt;br /&gt;
:Robotics&lt;br /&gt;
:Paleontology&lt;br /&gt;
:Martian soil chemistry&lt;br /&gt;
:Child psychology&lt;br /&gt;
:Tourism&lt;br /&gt;
:[Second quadrant]&lt;br /&gt;
:Atmospheric physics&lt;br /&gt;
:Ethics&lt;br /&gt;
:Education&lt;br /&gt;
:Bibliography&lt;br /&gt;
:Human physiology&lt;br /&gt;
:Public speaking&lt;br /&gt;
:Architecture&lt;br /&gt;
:Library science&lt;br /&gt;
:Furniture design&lt;br /&gt;
:Culinary arts&lt;br /&gt;
:Ergonomics&lt;br /&gt;
:Botany&lt;br /&gt;
:[Third quadrant]&lt;br /&gt;
:Entomology&lt;br /&gt;
:Occupational therapy&lt;br /&gt;
:Hydraulic engineering&lt;br /&gt;
:Pest control&lt;br /&gt;
:Foodborne illness&lt;br /&gt;
:Criminal law&lt;br /&gt;
:Physiology of stress&lt;br /&gt;
:Oncology&lt;br /&gt;
:[Fourth quadrant]&lt;br /&gt;
:Ornithology&lt;br /&gt;
:Animation&lt;br /&gt;
:Petroleum geology&lt;br /&gt;
:Highway engineering&lt;br /&gt;
:Toxicology&lt;br /&gt;
:Hematology&lt;br /&gt;
:Hostage negotiation&lt;br /&gt;
:History of siege warfare&lt;br /&gt;
:Trauma surgery&lt;br /&gt;
:Volcanology&lt;br /&gt;
:Quasar astronomy&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Charts]]&lt;br /&gt;
[[Category:Rankings]]&lt;br /&gt;
[[Category:Food]]&lt;br /&gt;
[[Category:Cancer]]&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:Geology]]&lt;br /&gt;
[[Category:Astronomy]]&lt;br /&gt;
[[Category:Volcanoes]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2372:_Dialect_Quiz&amp;diff=199774</id>
		<title>2372: Dialect Quiz</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2372:_Dialect_Quiz&amp;diff=199774"/>
				<updated>2020-10-14T23:28:49Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ expand based on color wrongness&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2372&lt;br /&gt;
| date      = October 14, 2020&lt;br /&gt;
| title     = Dialect Quiz&lt;br /&gt;
| image     = dialect_quiz.png&lt;br /&gt;
| titletext = Do you make a distinction between shallots, scallops, and scallions? If you use all three words, do they all have different meanings, all the same, or are two the same and one different?&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a LIGHTBULB EATER. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
This comic is a parody of the many online quizzes that offer to determine the dialect of American English that the user speaks. These quizzes generally contain questions about word usage, names for certain objects, and pronunciations that vary between different regions of the US. There are also quizzes about broader English dialects, but this comic focuses on commonly cited differences between American dialects.&lt;br /&gt;
&lt;br /&gt;
{| border =1 width=100% cellpadding=5 class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! # !! Question !! Answers !! Explanation&lt;br /&gt;
|-&lt;br /&gt;
! 1&lt;br /&gt;
| How do you address a group of two or more people?&lt;br /&gt;
|&lt;br /&gt;
* A) You&lt;br /&gt;
* B) Y'all&lt;br /&gt;
* C) I have not been around two or more people for so long that I can't remember&lt;br /&gt;
| Reference to a usual dialect quiz question: &amp;quot;How do you address {{w|You#Informal_plural_forms|a group of two or more people}}?&amp;quot; (with options often including &amp;quot;you all&amp;quot;, &amp;quot;you guys&amp;quot;, &amp;quot;y'all&amp;quot;, etc.). Option C references the significant decrease in human interaction and social contact during the COVID-19 pandemic.&lt;br /&gt;
|-&lt;br /&gt;
! 2&lt;br /&gt;
| How do you pronounce &amp;quot;Penelope&amp;quot;?&lt;br /&gt;
|&lt;br /&gt;
* A) Rhymes with &amp;quot;Antelope&amp;quot;&lt;br /&gt;
* B) Rhymes with &amp;quot;Develop&amp;quot;&lt;br /&gt;
| In English, the only correct way to pronounce this name is &amp;quot;pe-NELL-o-pee&amp;quot;, which is not listed as an option. Neither Option A's &amp;quot;PEN-e-lohp&amp;quot; and Option B's &amp;quot;pe-NELL-up&amp;quot; are a typical pronunciation of this name beyond mispronunciations.&lt;br /&gt;
|-&lt;br /&gt;
! 3&lt;br /&gt;
| What do you call the scientific field that studies the stars?&lt;br /&gt;
|&lt;br /&gt;
* A) Astrology&lt;br /&gt;
* B) Agronomy&lt;br /&gt;
* C) Cosmetology&lt;br /&gt;
| The actual answer is {{w|Astronomy}}, which is not listed. {{w|Astrology}} is the pseudo-scientific study that includes horoscopes (often confused with Astronomy due to its similar name), {{w|Agronomy}} ''is'' scientific but instead studies agriculture, and {{w|Cosmetology}} is the study of cosmetics and makeup (with a name close to {{w|Cosmology}}, a branch of Astronomy).&lt;br /&gt;
|-&lt;br /&gt;
! 4&lt;br /&gt;
| How do you pronounce &amp;quot;genre&amp;quot;?&lt;br /&gt;
| &lt;br /&gt;
* A) Gone-ra&lt;br /&gt;
* B) Juh-neer&lt;br /&gt;
* C) Jen-er-uh&lt;br /&gt;
| Reference to a usual dialect quiz question: &amp;quot;How do you pronounce ''genre''? ZHAHN-ruh, or JAHN-ruh?&amp;quot;&lt;br /&gt;
&lt;br /&gt;
A majority of English speakers pronounce &amp;quot;genre&amp;quot; as either &amp;quot;'''ZH'''AHN-ruh&amp;quot; (beginning with the &amp;quot;zh&amp;quot; sound found in &amp;quot;trea'''s'''ure&amp;quot;) or &amp;quot;'''J'''AHN-ruh&amp;quot; (beginning with the &amp;quot;j&amp;quot; sound in &amp;quot;justice&amp;quot;). Neither of these are listed, and none of the quiz's pronunciation options are common.&lt;br /&gt;
|-&lt;br /&gt;
! 5&lt;br /&gt;
| You pronounce &amp;quot;Google&amp;quot; with a high-pitched yelp on the...&lt;br /&gt;
| &lt;br /&gt;
* A) First syllable&lt;br /&gt;
* B) Second syllable&lt;br /&gt;
| Reference to general questions regarding differences in pronunciation of words. &amp;quot;Google&amp;quot; is not pronounced with a high-pitched yelp on either syllable{{Citation needed}}.&lt;br /&gt;
|-&lt;br /&gt;
! 6&lt;br /&gt;
| What do you call the thing on the wall at school that you drink water from?&lt;br /&gt;
|&lt;br /&gt;
* A) Gutter pipe&lt;br /&gt;
* B) Drainpipe&lt;br /&gt;
| Reference to a usual dialect quiz question: &amp;quot;What do you call the thing you drink water out of at school? Drinking fountain, water fountain, or bubbler?&amp;quot; However, this question implies that schoolchildren (or at least the quizmaker) drink out of gutter pipes or drain pipes.&lt;br /&gt;
|-&lt;br /&gt;
! 7&lt;br /&gt;
| How do you pronounce the name for a short silent video file?&lt;br /&gt;
|&lt;br /&gt;
* A) Animated give&lt;br /&gt;
* B) Animated gift&lt;br /&gt;
| Reference to the &amp;quot;{{w|Gif}}&amp;quot; pronunciation debate, with people split between pronouncing it &amp;quot;gif&amp;quot; (with the hard G sound in &amp;quot;girl&amp;quot;) or &amp;quot;jif&amp;quot; (with the soft G sound in &amp;quot;giraffe&amp;quot;).&lt;br /&gt;
|-&lt;br /&gt;
! 8&lt;br /&gt;
| What do you call the baseball-sized garden bugs that, when poked, glow brightly and emit a warbling scream?&lt;br /&gt;
| &lt;br /&gt;
* A) What?&lt;br /&gt;
* B) Lawn buddies&lt;br /&gt;
| Reference to a usual dialect quiz question: &amp;quot;What do you call those {{w|Armadillidiidae|small bugs}} that curl themselves up in a ball if you poke them?&amp;quot; (options including &amp;quot;roly-poly&amp;quot;, &amp;quot;pill-bug&amp;quot;, &amp;quot;potato bug&amp;quot;, &amp;quot;doodle bug&amp;quot;, etc.). However, there are no common &amp;quot;baseball-sized garden bugs&amp;quot;.{{Citation needed}}&lt;br /&gt;
|-&lt;br /&gt;
! 9&lt;br /&gt;
| What do you call the misleading lines painted by disgruntled highway workers to trick cars into driving off the road?&lt;br /&gt;
| &lt;br /&gt;
* A) Prank lines&lt;br /&gt;
* B) Devil's Marks&lt;br /&gt;
* C) Fool-me lines&lt;br /&gt;
* D) Fauxguides&lt;br /&gt;
* E) Delaware lines&lt;br /&gt;
| Reference to the fact that many quiz questions ask about road features, such as &amp;quot;verge/berm/parking strip/curb strip&amp;quot; and &amp;quot;roundabout/traffic circle&amp;quot;. However, these particular road lines, if they have ever been made, aren't common enough to warrant different names. &lt;br /&gt;
This also may just be a dig at Delaware.&lt;br /&gt;
&lt;br /&gt;
Misleading lines on the road were also mentioned in [[1958: Self-Driving Issues]].&lt;br /&gt;
|-&lt;br /&gt;
! 10&lt;br /&gt;
| What do you call the blue-green planet in the outer Solar System?&lt;br /&gt;
| &lt;br /&gt;
* A) Uranus&lt;br /&gt;
* B) Neptune&lt;br /&gt;
| This question references the two common pronunciations of Uranus: &amp;quot;UR-ah-nus&amp;quot; and &amp;quot;Ur-AY-nus&amp;quot; (which sounds like the phrase &amp;quot;Your anus&amp;quot;, a favorite joke of little kids). It also references the fact that Uranus and Neptune are both blue-ish colored planets in the outer solar system and are often confused by people who don't know much about them. Neither Uranus nor Neptune are green however.&lt;br /&gt;
|-&lt;br /&gt;
! 11&lt;br /&gt;
| (image of a claw hammer)&lt;br /&gt;
| &lt;br /&gt;
* A) Banger&lt;br /&gt;
* B) Nail axe&lt;br /&gt;
* C) Wood mage wand&lt;br /&gt;
* D) I'm familiar with this tool but have no specific word for it&lt;br /&gt;
* E) I have never seen it before &lt;br /&gt;
| The only name most people would ever call this tool is a &amp;quot;hammer&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
The last two options reference common dialect quiz answer options of &amp;quot;I'm familiar with this thing but have no specific word for it&amp;quot; and &amp;quot;I am not familiar with this thing&amp;quot;. These may appear as options to questions that ask about something that might not exist everywhere, or something which many may not have a word for (for example, some areas of the United States have a name for &amp;quot;sunshowers&amp;quot;, while most don't). However, it's a bit absurd for these options to be present for this question (and this question alone), as most users would be expected to know what a hammer is.&lt;br /&gt;
|-&lt;br /&gt;
! 12&lt;br /&gt;
| What do you call a long sandwich with meats and lettuce and stuff?&lt;br /&gt;
|&lt;br /&gt;
* A) A long sandwich with meats and lettuce and stuff&lt;br /&gt;
* B) A longwich&lt;br /&gt;
* C) A salad hot dog&lt;br /&gt;
| Reference to a usual dialect quiz question: &amp;quot;What do you call a {{w|Submarine sandwich|long sandwich}}?&amp;quot; with options typically including &amp;quot;sub&amp;quot;, &amp;quot;hoagie&amp;quot;, &amp;quot;hero&amp;quot;, etc.&lt;br /&gt;
&lt;br /&gt;
The hot dog answer could refer to the common online discussion: &amp;quot;Is a hot dog a sandwich?&amp;quot;&lt;br /&gt;
|-&lt;br /&gt;
! 13&lt;br /&gt;
| What do you call the scaly many-legged animal often found in attics?&lt;br /&gt;
| &lt;br /&gt;
* A) Lightbulb eater&lt;br /&gt;
* B) I have no special name for them&lt;br /&gt;
* C) I've never looked in my attic&lt;br /&gt;
| Another reference to the frequent appearance of quiz questions asking what users call various creepy crawlies. &lt;br /&gt;
This question may be referencing the fact that spiders often live in attics, but Randall's creature doesn't seem to be quite the same as a normal spider since they usually aren't scaly and don't eat lightbulbs.&lt;br /&gt;
|-&lt;br /&gt;
! 14&lt;br /&gt;
| What do you say when someone around you sneezes?&lt;br /&gt;
| &lt;br /&gt;
* A) &amp;quot;What was that?&amp;quot;&lt;br /&gt;
* B) &amp;quot;Oh, wow.&amp;quot;&lt;br /&gt;
* C) [Quietly] &amp;quot;Yikes.&amp;quot;&lt;br /&gt;
| Reference to a usual dialect question on which of several words/phrases you say in response to a sneeze, with usual answers including &amp;quot;bless you&amp;quot;, &amp;quot;God bless you&amp;quot;, and &amp;quot;{{w|Gesundheit}}&amp;quot; (from the German word for 'health').&lt;br /&gt;
&lt;br /&gt;
This question may also be referencing the {{w|COVID-19 pandemic}} in answer C (and possibly answer B). Sneezing isn't a primary symptom of COVID-19, but most people are hyper-aware of possibly contracting the disease from the people around them so sneezes are treated with suspicion and it's seen as rude to sneeze openly.&lt;br /&gt;
|-&lt;br /&gt;
! Title Text&lt;br /&gt;
| colspan=2 |  Do you make a distinction between shallots, scallops, and scallions? If you use all three words, do they all have different meanings, all the same, or are two the same and one different?&lt;br /&gt;
| Phrased similarly to common questions like &amp;quot;Do you pronounce the words 'marry', 'merry', and 'Mary' differently?&amp;quot; (options including &amp;quot;all the same&amp;quot;, &amp;quot;all different&amp;quot;, or &amp;quot;two are the same and one is different&amp;quot;).&lt;br /&gt;
&lt;br /&gt;
{{w|Shallots}} and {{w|scallions}} are both types of onions (the former somewhat resembling garlic cloves, the latter being long green/white stalks also called spring onions). {{w|Scallops}} (either pronounced &lt;br /&gt;
''skollops'' or ''skallops'') are invertebrate marine animals similar to oysters and clams, frequently harvested for food (also what potato fritters are called in some regions of the UK and Australia).  &lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
&lt;br /&gt;
[Box with title at the top]&lt;br /&gt;
:Dialect Quiz&lt;br /&gt;
[Smaller subtitle underneath]&lt;br /&gt;
:Compare answers with your friends!&lt;br /&gt;
&lt;br /&gt;
[Quiz is divided into two columns. Answers to questions are indicated by a letter followed by a closed parentheses, such as A). These letters are greyed out]&lt;br /&gt;
&lt;br /&gt;
[Column 1:]&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
How do you address a group of two or more people?	&lt;br /&gt;
:A) You&lt;br /&gt;
:B) Y'all&lt;br /&gt;
:C) I have not been around two or more people for so long that I can't remember&lt;br /&gt;
&lt;br /&gt;
How do you pronounce &amp;quot;Penelope&amp;quot;?	&lt;br /&gt;
:A) Rhymes with &amp;quot;Antelope&amp;quot;&lt;br /&gt;
:B) Rhymes with &amp;quot;Develop&amp;quot;&lt;br /&gt;
&lt;br /&gt;
What do you call the scientific field that studies the stars?	&lt;br /&gt;
:A) Astrology&lt;br /&gt;
:B) Agronomy&lt;br /&gt;
:C) Cosmetology&lt;br /&gt;
&lt;br /&gt;
How do you pronounce &amp;quot;genre&amp;quot;?	&lt;br /&gt;
:A) Gone-ra&lt;br /&gt;
:B) Juh-neer&lt;br /&gt;
:C) Jen-er-uh&lt;br /&gt;
&lt;br /&gt;
You pronounce &amp;quot;Google&amp;quot; with a high-pitched yelp on the...	&lt;br /&gt;
:A) First syllable&lt;br /&gt;
:B) Second syllable&lt;br /&gt;
&lt;br /&gt;
What do you call the thing on the wall at school that you drink water from?	&lt;br /&gt;
:A) Gutter pipe&lt;br /&gt;
:B) Drainpipe&lt;br /&gt;
&lt;br /&gt;
How do you pronounce the name for a short silent video file?	&lt;br /&gt;
:A) Animated give&lt;br /&gt;
:B) Animated gift&lt;br /&gt;
&lt;br /&gt;
What do you call the baseball-sized garden bugs that, when poked, glow brightly and emit a warbling scream?	&lt;br /&gt;
:A) What?&lt;br /&gt;
:B) Lawn buddies&lt;br /&gt;
&lt;br /&gt;
[Column 2:]&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
What do you call the misleading lines painted by disgruntled highway workers to trick cars into driving off the road?	&lt;br /&gt;
:A) Prank lines&lt;br /&gt;
:B) Devil's Marks&lt;br /&gt;
:C) Fool-me lines&lt;br /&gt;
:D) Fauxguides&lt;br /&gt;
:E) Delaware lines&lt;br /&gt;
&lt;br /&gt;
What do you call the blue-green planet in the outer Solar System?	&lt;br /&gt;
:A) Uranus&lt;br /&gt;
:B) Neptune&lt;br /&gt;
&lt;br /&gt;
[Image of a claw hammer]	&lt;br /&gt;
:A) Banger&lt;br /&gt;
:B) Nail axe&lt;br /&gt;
:C) Wood mage wand&lt;br /&gt;
:D) I'm familiar with this tool but have no specific word for it&lt;br /&gt;
:E) I have never seen it before&lt;br /&gt;
&lt;br /&gt;
What do you call a long sandwich with meats and lettuce and stuff?	&lt;br /&gt;
:A) A long sandwich with meats and lettuce and stuff&lt;br /&gt;
:B) A longwich&lt;br /&gt;
:C) A salad hot dog&lt;br /&gt;
&lt;br /&gt;
What do you call the scaly many-legged animal often found in attics?	&lt;br /&gt;
:A) Lightbulb eater&lt;br /&gt;
:B) I have no special name for them&lt;br /&gt;
:C) I've never looked in my attic&lt;br /&gt;
&lt;br /&gt;
What do you say when someone around you sneezes?	&lt;br /&gt;
:A) &amp;quot;What was that?&amp;quot;&lt;br /&gt;
:B) &amp;quot;Oh, wow.&amp;quot;&lt;br /&gt;
:C) [Quietly] &amp;quot;Yikes.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
&lt;br /&gt;
*The xkcd Twitter account posted a [https://twitter.com/xkcd/status/1316484953480323072 series of Twitter polls] asking the questions in this comic.&lt;br /&gt;
*Shallots, scallops, and scallions ran against each other in [[1529: Bracket]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Language]]&lt;br /&gt;
[[Category:COVID-19]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2360:_Common_Star_Types&amp;diff=197271</id>
		<title>2360: Common Star Types</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2360:_Common_Star_Types&amp;diff=197271"/>
				<updated>2020-09-17T04:54:49Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: Galadriel is explicitly NOT a Green Elf and this could also apply to the general process of fading&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2360&lt;br /&gt;
| date      = September 16, 2020&lt;br /&gt;
| title     = Common Star Types&lt;br /&gt;
| image     = common_star_types.png&lt;br /&gt;
| titletext = This article is about Eta Carinae, a luminous blue hypergiant with anomalous Fe[ii] emission spectra. For the 1998 Brad Bird film, see The Iron Giant (film).&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an INDIGO BANSHEE. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
This 'infographic' chart purports to be a comparative guide to various star types, often described by a basic colour, which is something that even naked-eye astronomy has determined, and often qualified as 'dwarf' or 'giant' to describe relative sizes. An idea of the true size of a star has only really been possible since the development of modern instrumental astronomy, which can also determine the different conditions that make a red dwarf or a red giant 'red'.&lt;br /&gt;
&lt;br /&gt;
In true xkcd tradition, this is taken beyond reality. The pantheon of stars illustrated extend the use of 'dwarf' and 'giant' as if describing mythical or fictional beings, pairing others from the fantasy ilk with hues and shades that may not be typically used, or encountered, by astronomers.&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
!Star !! Description&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Yellow dwarf star|Yellow Dwarf}} || A real star type. This is the type of star that our sun is, with a lifespan measured in the billions of years. The title of &amp;quot;Dwarf&amp;quot; is an artifact, as the sun is larger than most stars, but was thought to be smaller due to the fact that larger stars were more visible than smaller stars.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Red giant|Red Giant}} || A real star type. When stars at about the sun's size begin to run out of fusion fuel, they expand to become red giants, and the outer shells expand and cool. When our sun enters this phase in a few billion years, it will consume the earth.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|White dwarf|White Dwarf}} || Not a true star, but a real stellar object. These are formed when stars at about the sun's size finally die. They are superdense, and do not undergo nuclear fusion. They are responsible for type 1A supernova, a standard candle of astronomy.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Red dwarf|Red Dwarf}} || A real star type. The most common, smallest, and coolest type of true star in the universe (Brown Dwarfs are smaller and cooler, but do not undergo Hydrogen/Hydrogen fusion) These can live for trillions of years, the first red Dwarfs to form are still alive today. &lt;br /&gt;
|-&lt;br /&gt;
| Green Elf || An invention of Randall's, and a reference to the elves of {{w|Tolkien's legendarium}}. His elves are immortal, but slowly diminish over time, and leave Middle Earth (where ''The Lord of the Rings'' is set) as magic fades to the West, in the Undying lands.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Blue giant|Blue Giant}} || A real star type. The largest class of star in the main sequence, they have life spans measured in the millions of years and are highly luminous. &lt;br /&gt;
|-&lt;br /&gt;
| Teal Sphynx || An invention of Randall's; likely a form of the Greek {{w|Sphinx#Riddle_of_the_Sphinx|sphinx}}, which puts riddles to hapless travellers. One can only imagine what stellar riddles would be like.&lt;br /&gt;
|-&lt;br /&gt;
| Gray Wizard || An invention of Randall's, and also a Reference to ''Lord of the Rings''. {{w|Gandalf the Grey}}, a wizard, is a protagonist and mentor figure in ''The Hobbit'' and the ''Lord of the Rings'', guiding and assisting the journeys within the books.&lt;br /&gt;
|-&lt;br /&gt;
| Indigo Banshee || An invention of Randall's, and a reference to {{w|Banshees}}, a type of spirit, or ghost, which can kill those who hear their wail. &lt;br /&gt;
|-&lt;br /&gt;
| Beige Gorgon. || An invention of Randall's, and a reference to {{w|Gorgons}} in {{w|Greek Mythology}}. &amp;quot;Dangerous to observe at optical wavelengths&amp;quot; refers to the property of Gorgons where any who gaze upon their faces will be turned to stone, however, seeing a Gorgon's refection was safe, so [[1791: Telescopes: Refractor vs Reflector | most astronomers should be fine. ]]&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
The title text is in the style of a Wikipedia page's hatnote / reference note. A page might have a title that is too easily landed upon by a search term that might also be expected to lead to one under a quite different subject. In this case, it was written as if the page {{w|Iron Giant}} (or {{w|iron giant}}) was about (or redirected to) {{w|Eta Carinae}}, a large Luminous Blue Variable star which has a relatively high level of ferrous ions. In reality, these redirect to ''{{w|The Iron Giant}}'', the first movie directed by the incredible Brad Bird. This note [https://en.wikipedia.org/w/index.php?title=Eta_Carinae&amp;amp;oldid=978789727 was added] to Wikipedia, but quickly removed; nobody has messed with the redirects (yet).&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
[A chart, with circles representing stars of different colours and sizes. At the top:]&lt;br /&gt;
:Common star types&lt;br /&gt;
&lt;br /&gt;
[A small yellow star.]&lt;br /&gt;
:Yellow dwarf&lt;br /&gt;
:Warm, stable, slowly-growing&lt;br /&gt;
&lt;br /&gt;
[An even smaller white star.]&lt;br /&gt;
:White dwarf&lt;br /&gt;
:Small, hot, dim&lt;br /&gt;
&lt;br /&gt;
[A very large red-orange star squishing the previous two stars into the corners of the chart.]&lt;br /&gt;
:Red giant&lt;br /&gt;
:Huge, cool, luminous&lt;br /&gt;
&lt;br /&gt;
[A small red star.]&lt;br /&gt;
:Red dwarf&lt;br /&gt;
:Small, cool, ancient, dim&lt;br /&gt;
&lt;br /&gt;
[An olive green, medium-sized star.]&lt;br /&gt;
:Green elf&lt;br /&gt;
:Old, diminishes into the west&lt;br /&gt;
&lt;br /&gt;
[A fairly large pale blue star.]&lt;br /&gt;
:Blue giant&lt;br /&gt;
:Large, hot, short-lived&lt;br /&gt;
&lt;br /&gt;
[A blue-green, medium-sized star.]&lt;br /&gt;
:Teal sphynx&lt;br /&gt;
:Cryptic, eternal&lt;br /&gt;
&lt;br /&gt;
[A small silver-coloured star.]&lt;br /&gt;
:Gray wizard&lt;br /&gt;
:Wise, powerful, mercurial&lt;br /&gt;
&lt;br /&gt;
[A tiny blue star.]&lt;br /&gt;
:Indigo banshee&lt;br /&gt;
:Bright, portentous, extremely loud&lt;br /&gt;
&lt;br /&gt;
[A beige, medium-sized star.]&lt;br /&gt;
:Beige gorgon&lt;br /&gt;
:Dangerous to observe at optical wavelengths.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Astronomy]]&lt;br /&gt;
[[Category:Fiction]]&lt;br /&gt;
[[Category:LOTR]]&lt;br /&gt;
[[Category:Comics with color]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2171:_Shadow_Biosphere&amp;diff=176217</id>
		<title>2171: Shadow Biosphere</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2171:_Shadow_Biosphere&amp;diff=176217"/>
				<updated>2019-07-05T19:13:18Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ adjust wording&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2171&lt;br /&gt;
| date      = July 3, 2019&lt;br /&gt;
| title     = Shadow Biosphere&lt;br /&gt;
| image     = shadow_biosphere.png&lt;br /&gt;
| titletext = The typical Shadow Biology Department is housed in a building coated in a thin layer of desert varnish which renders it invisible to normal-world university staff.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by SCP-SHADOW BIOLOGIST. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
A {{w|shadow biosphere}} is a hypothetical microbial {{w|biosphere}} of Earth that uses radically different biochemical and molecular processes than currently known life. Although life on Earth is relatively well-studied, the shadow biosphere may still remain unnoticed because the exploration of the microbial world targets primarily the biochemistry of the macro-organisms.&amp;lt;small&amp;gt;([https://en.wikipedia.org/wiki/Shadow_biosphere source: Wikipedia])&amp;lt;/small&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Because organisms based on RNA would not have ribosomes, which are usually used to detect living microorganisms, they would be difficult to find in normal circumstances.&lt;br /&gt;
&lt;br /&gt;
The comic suggests that this hypothetical biosphere exists, and its study is funded by &amp;quot;shadow biotech&amp;quot; corporations. The field would be called &amp;quot;shadow biology&amp;quot;, so people that study it would be &amp;quot;shadow biologists&amp;quot;. However, this is reinterpreted to mean &amp;quot;shadow&amp;quot; biologist, meaning that anyone that studies it becomes undetectable. A &amp;quot;shadowy&amp;quot; figure, presumably a shadow biologist, is telling this to [[Megan]] and [[Cueball]], but they are not shadow biologists and can't hear him.&lt;br /&gt;
&lt;br /&gt;
The title text references {{w|desert varnish}}, an orange-yellow to black coating found on exposed rock surfaces in arid environments, which has been suggested as a potential candidate for a shadow biosphere. Unless a building was made with already-varnished rocks, it would be impractical to cover a building in desert varnish (it forms naturally on rocks over thousands of years). Ignoring its impracticality, the joke is that if a building were covered in desert varnish, it would supposedly be invisible to biologists who don't study the shadow biosphere.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:[Cueball and Megan are standing facing each other. A shadowy figure is behind Megan.]&lt;br /&gt;
:Shadowy figure: These days most of our funding comes in from the shadow biotech industry.&lt;br /&gt;
:Megan: Did you hear something?&lt;br /&gt;
:Cueball: I think it's the wind.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
: The shadow biosphere exists, but if you study it, you become a shadow biologist.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Biology]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2171:_Shadow_Biosphere&amp;diff=176216</id>
		<title>2171: Shadow Biosphere</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2171:_Shadow_Biosphere&amp;diff=176216"/>
				<updated>2019-07-05T19:12:03Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ Not impossible, just wildly impractical&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2171&lt;br /&gt;
| date      = July 3, 2019&lt;br /&gt;
| title     = Shadow Biosphere&lt;br /&gt;
| image     = shadow_biosphere.png&lt;br /&gt;
| titletext = The typical Shadow Biology Department is housed in a building coated in a thin layer of desert varnish which renders it invisible to normal-world university staff.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by SCP-SHADOW BIOLOGIST. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
A {{w|shadow biosphere}} is a hypothetical microbial {{w|biosphere}} of Earth that uses radically different biochemical and molecular processes than currently known life. Although life on Earth is relatively well-studied, the shadow biosphere may still remain unnoticed because the exploration of the microbial world targets primarily the biochemistry of the macro-organisms.&amp;lt;small&amp;gt;([https://en.wikipedia.org/wiki/Shadow_biosphere source: Wikipedia])&amp;lt;/small&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Because organisms based on RNA would not have ribosomes, which are usually used to detect living microorganisms, they would be difficult to find in normal circumstances.&lt;br /&gt;
&lt;br /&gt;
The comic suggests that this hypothetical biosphere exists, and its study is funded by &amp;quot;shadow biotech&amp;quot; corporations. The field would be called &amp;quot;shadow biology&amp;quot;, so people that study it would be &amp;quot;shadow biologists&amp;quot;. However, this is reinterpreted to mean &amp;quot;shadow&amp;quot; biologist, meaning that anyone that studies it becomes undetectable. A &amp;quot;shadowy&amp;quot; figure, presumably a shadow biologist, is telling this to [[Megan]] and [[Cueball]], but they are not shadow biologists and can't hear him.&lt;br /&gt;
&lt;br /&gt;
The title text references {{w|desert varnish}}, an orange-yellow to black coating found on exposed rock surfaces in arid environments, which has been suggested as a potential candidate for a shadow biosphere. Unless a building was made with already-varnished rocks, it would be impractical to cover a building in desert varnish (it forms naturally on rocks over thousands of years). Ignoring its impracticality, the joke is that if a building were covered in desert varnish, it would be invisible to biologists who don't study the shadow biosphere.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:[Cueball and Megan are standing facing each other. A shadowy figure is behind Megan.]&lt;br /&gt;
:Shadowy figure: These days most of our funding comes in from the shadow biotech industry.&lt;br /&gt;
:Megan: Did you hear something?&lt;br /&gt;
:Cueball: I think it's the wind.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
: The shadow biosphere exists, but if you study it, you become a shadow biologist.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Biology]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158127</id>
		<title>2001: Clickbait-Corrected p-Value</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158127"/>
				<updated>2018-06-01T18:05:53Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ symbols&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2001&lt;br /&gt;
| date      = June 1, 2018&lt;br /&gt;
| title     = Clickbait-Corrected p-Value&lt;br /&gt;
| image     = clickbait_corrected_p_value.png&lt;br /&gt;
| titletext = When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Please first explain p-value. Most people don't know. - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic references ''hypothesis testing'' in statistics. When one wishes to determine if a given assumption is statistically supported by the data, a ''hypothesis test'' may be used. Usually, such a test takes the form of a null hypothesis, H0, which basically states that the status quo is maintained (here, that chocolate has ''no effect'' on athletic performance). The alternative hypothesis, H1, is the one the statistician wishes to put to the test (here, that chocolate ''increases'' athletic performance). Normally, the mathematician would gather data, run some calculations, and come up with a ''p-value''. This is the probability that the sample's results were obtained solely by chance, assuming that the null hypothesis is held to be true. Thus, the lesser the p-value, the less likely the null hypothesis is true. Below a certain point, usually 5% or 1%, we reject H0 and accept H1 to be true. However, the P-value being set at either 5% or 1% is a matter of convention and is largely continued through tradition. The comic may be a joke referencing the arbitrary nature of that.&lt;br /&gt;
&lt;br /&gt;
In this version, the p-value is corrected by a factor which increases when readers click a headline stating that H1 is true, and decreases when people click a headline stating that H0 is true. This has the effect of ''increasing'' the p-value if readers favor H1 over H0, leading to a greater chance of ''H0'' being accepted. This seems to operate under the assumption that whatever clickers of clickbait believe, the reverse is likely to be true.&lt;br /&gt;
&lt;br /&gt;
As the statistical results now depend on people's beliefs about the hypothesis, this is as far from actual science as one can get. However, in a way, it is more in tune with a quote by Arbuthnot (one of the originators of the use of p-values) attributing variation to active thought rather than chance, &amp;quot;From whence it follows, that it is Art, not Chance, that governs.&amp;quot; Randall applying that quote to the thoughts of the masses, bringing it in line with &amp;quot;Art&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
Clickbait is the practice of using deceptive or manipulative headlines to entice readers to click on a dubious news story, often with the purpose of generating ad revenue.&lt;br /&gt;
&lt;br /&gt;
This comic calculates the p-value of clickbait article and videos, nowadays very common on the web. The formula depicted is commonly known as the Bayes theorem, and a more common expression of that theorem is p(A|B) = p(B|A) * p(A) / p(B). Here, it depicts the odds of a clickbait article being clicked depending on two different headlines.&lt;br /&gt;
&lt;br /&gt;
The comic does not present a correct example of null and alternative hypotheses. As the alternative hypothesis (H1) predicts that chocolate will '''improve performance''' (i.e., a one-tailed, directional hypothesis) the null hypothesis (H0) should predict that chocolate will '''do nothing''' &amp;lt;u&amp;gt;or&amp;lt;/u&amp;gt; '''make performance worse'''. If, on the other hand, the alternative hypothesis (H1) was that chocolate would '''change performance''' (for better or worse; i.e., a two-tailed hypothesis) then the null hypothesis (H0) would be that chocolate would simply '''do nothing'''.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Wrong layout, and the Math extension is not installed yet.}}&lt;br /&gt;
Clickbait-Corrected p-Value :&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
P&amp;lt;sub&amp;gt;CL&amp;lt;/sub&amp;gt; = P&amp;lt;sub&amp;gt;traditional&amp;lt;/sub&amp;gt; * click(H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)/click(H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt;)}&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; : NULL hypothesis (&amp;quot;Chocolate has no effect on athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; : Alternative hypothesis (&amp;quot;Chocolate boosts athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
click(H) : Fraction of test subjects who click on a headline announcing that H is true&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&amp;quot;When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Statistics]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158126</id>
		<title>2001: Clickbait-Corrected p-Value</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158126"/>
				<updated>2018-06-01T18:04:22Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ adjust&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2001&lt;br /&gt;
| date      = June 1, 2018&lt;br /&gt;
| title     = Clickbait-Corrected p-Value&lt;br /&gt;
| image     = clickbait_corrected_p_value.png&lt;br /&gt;
| titletext = When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Please first explain p-value. Most people don't know. - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic references ''hypothesis testing'' in statistics. When one wishes to determine if a given assumption is statistically supported by the data, a ''hypothesis test'' may be used. Usually, such a test takes the form of a null hypothesis, H0, which basically states that the status quo is maintained (here, that chocolate has ''no effect'' on athletic performance). The alternative hypothesis, H1, is the one the statistician wishes to put to the test (here, that chocolate ''increases'' athletic performance). Normally, the mathematician would gather data, run some calculations, and come up with a ''p-value''. This is the probability that the sample's results were obtained solely by chance, assuming that the null hypothesis is held to be true. Thus, the lesser the p-value, the less likely the null hypothesis is true. Below a certain point, usually 5% or 1%, we reject H0 and accept H1 to be true. However, the P-value being set at either 5% or 1% is a matter of convention and is largely continued through tradition. The comic may be a joke referencing the arbitrary nature of that.&lt;br /&gt;
&lt;br /&gt;
In this version, the p-value is corrected by a factor which increases when readers click a headline stating that H1 is true, and decreases when people click a headline stating that H0 is true. This has the effect of ''increasing'' the p-value if readers favor H1 over H0, leading to a greater chance of ''H0'' being accepted. This seems to operate under the assumption that whatever clickers of clickbait believe, the reverse is likely to be true.&lt;br /&gt;
&lt;br /&gt;
As the statistical results now depend on people's beliefs about the hypothesis, this is as far from actual science as one can get. However, in a way, it is more in tune with a quote by Arbuthnot (one of the originators of the use of p-values) attributing variation to active thought rather than chance, &amp;quot;From whence it follows, that it is Art, not Chance, that governs.&amp;quot; Randall applying that quote to the thoughts of the masses, bringing it in line with &amp;quot;Art&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
Clickbait is the practice of using deceptive or manipulative headlines to entice readers to click on a dubious news story, often with the purpose of generating ad revenue.&lt;br /&gt;
&lt;br /&gt;
This comic calculates the p-value of clickbait article and videos, nowadays very common on the web. The formula depicted is commonly known as the Bayes theorem, and a more common expression of that theorem is p(A|B) = p(B|A) * p(A) / p(B). Here, it depicts the odds of a clickbait article being clicked depending on two different headlines.&lt;br /&gt;
&lt;br /&gt;
The comic does not present a correct example of null and alternative hypotheses. As the alternative hypothesis predicts that chocolate will '''improve performance''' (i.e., a one-tailed, directional hypothesis) the null hypothesis should predict that chocolate will '''do nothing''' &amp;lt;u&amp;gt;or&amp;lt;/u&amp;gt; '''make performance worse'''. If, on the other hand, the alternative hypothesis was that chocolate would '''change performance''' (for better or worse; i.e., a two-tailed hypothesis) then the null hypothesis would be that chocolate would simply '''do nothing'''.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Wrong layout, and the Math extension is not installed yet.}}&lt;br /&gt;
Clickbait-Corrected p-Value :&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
P&amp;lt;sub&amp;gt;CL&amp;lt;/sub&amp;gt; = P&amp;lt;sub&amp;gt;traditional&amp;lt;/sub&amp;gt; * click(H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)/click(H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt;)}&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; : NULL hypothesis (&amp;quot;Chocolate has no effect on athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; : Alternative hypothesis (&amp;quot;Chocolate boosts athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
click(H) : Fraction of test subjects who click on a headline announcing that H is true&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&amp;quot;When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Statistics]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158125</id>
		<title>2001: Clickbait-Corrected p-Value</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158125"/>
				<updated>2018-06-01T18:03:32Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ expand&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2001&lt;br /&gt;
| date      = June 1, 2018&lt;br /&gt;
| title     = Clickbait-Corrected p-Value&lt;br /&gt;
| image     = clickbait_corrected_p_value.png&lt;br /&gt;
| titletext = When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Please first explain p-value. Most people don't know. - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic references ''hypothesis testing'' in statistics. When one wishes to determine if a given assumption is statistically supported by the data, a ''hypothesis test'' may be used. Usually, such a test takes the form of a null hypothesis, H0, which basically states that the status quo is maintained (here, that chocolate has ''no effect'' on athletic performance). The alternative hypothesis, H1, is the one the statistician wishes to put to the test (here, that chocolate ''increases'' athletic performance). Normally, the mathematician would gather data, run some calculations, and come up with a ''p-value''. This is the probability that the sample's results were obtained solely by chance, assuming that the null hypothesis is held to be true. Thus, the lesser the p-value, the less likely the null hypothesis is true. Below a certain point, usually 5% or 1%, we reject H0 and accept H1 to be true. However, the P-value being set at either 5% or 1% is a matter of convention and is largely continued through tradition. The comic may be a joke referencing the arbitrary nature of that.&lt;br /&gt;
&lt;br /&gt;
In this version, the p-value is corrected by a factor which increases when readers click a headline stating that H1 is true, and decreases when people click a headline stating that H0 is true. This has the effect of ''increasing'' the p-value if readers favor H1 over H0, leading to a greater chance of ''H0'' being accepted. This seems to operate under the assumption that whatever clickers of clickbait believe, the reverse is likely to be true.&lt;br /&gt;
&lt;br /&gt;
As the statistical results now depend on people's beliefs about the hypothesis, this is as far from actual science as one can get. However, in a way, it is more in tune with a quote by Arbuthnot (one of the originators of the use of p-values) attributing variation to active thought rather than chance, &amp;quot;From whence it follows, that it is Art, not Chance, that governs.&amp;quot; Randall applying that quote to the thoughts of the masses, bringing it in line with &amp;quot;Art&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
Clickbait is the practice of using deceptive or manipulative headlines to entice readers to click on a dubious news story, often with the purpose of generating ad revenue.&lt;br /&gt;
&lt;br /&gt;
This comic calculates the p-value of clickbait article and videos, nowadays very common on the web. The formula depicted is commonly known as the Bayes theorem, and a more common expression of that theorem is p(A|B) = p(B|A) * p(A) / p(B). Here, it depicts the odds of a clickbait article being clicked depending on two different headlines.&lt;br /&gt;
&lt;br /&gt;
The comic does not present a correct example of null and alternative hypotheses. As the alternative hypothesis predicts that chocolate will '''improve performance''' (i.e., a one-tailed, directional hypothesis) the null hypothesis should predict that chocolate will '''do nothing''' &amp;lt;u&amp;gt;or&amp;lt;/u&amp;gt; '''make performance worse'''. If, on the other hand, the alternative hypothesis was that chocolate would '''change performance''' (for better or worse) then the null hypothesis would be that chocolate would simply '''do nothing''' (i.e., a two-tailed hypothesis).&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Wrong layout, and the Math extension is not installed yet.}}&lt;br /&gt;
Clickbait-Corrected p-Value :&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
P&amp;lt;sub&amp;gt;CL&amp;lt;/sub&amp;gt; = P&amp;lt;sub&amp;gt;traditional&amp;lt;/sub&amp;gt; * click(H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)/click(H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt;)}&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; : NULL hypothesis (&amp;quot;Chocolate has no effect on athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; : Alternative hypothesis (&amp;quot;Chocolate boosts athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
click(H) : Fraction of test subjects who click on a headline announcing that H is true&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&amp;quot;When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Statistics]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158124</id>
		<title>2001: Clickbait-Corrected p-Value</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158124"/>
				<updated>2018-06-01T18:01:45Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ grammar&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2001&lt;br /&gt;
| date      = June 1, 2018&lt;br /&gt;
| title     = Clickbait-Corrected p-Value&lt;br /&gt;
| image     = clickbait_corrected_p_value.png&lt;br /&gt;
| titletext = When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Please first explain p-value. Most people don't know. - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic references ''hypothesis testing'' in statistics. When one wishes to determine if a given assumption is statistically supported by the data, a ''hypothesis test'' may be used. Usually, such a test takes the form of a null hypothesis, H0, which basically states that the status quo is maintained (here, that chocolate has ''no effect'' on athletic performance). The alternative hypothesis, H1, is the one the statistician wishes to put to the test (here, that chocolate ''increases'' athletic performance). Normally, the mathematician would gather data, run some calculations, and come up with a ''p-value''. This is the probability that the sample's results were obtained solely by chance, assuming that the null hypothesis is held to be true. Thus, the lesser the p-value, the less likely the null hypothesis is true. Below a certain point, usually 5% or 1%, we reject H0 and accept H1 to be true. However, the P-value being set at either 5% or 1% is a matter of convention and is largely continued through tradition. The comic may be a joke referencing the arbitrary nature of that.&lt;br /&gt;
&lt;br /&gt;
In this version, the p-value is corrected by a factor which increases when readers click a headline stating that H1 is true, and decreases when people click a headline stating that H0 is true. This has the effect of ''increasing'' the p-value if readers favor H1 over H0, leading to a greater chance of ''H0'' being accepted. This seems to operate under the assumption that whatever clickers of clickbait believe, the reverse is likely to be true.&lt;br /&gt;
&lt;br /&gt;
As the statistical results now depend on people's beliefs about the hypothesis, this is as far from actual science as one can get. However, in a way, it is more in tune with a quote by Arbuthnot (one of the originators of the use of p-values) attributing variation to active thought rather than chance, &amp;quot;From whence it follows, that it is Art, not Chance, that governs.&amp;quot; Randall applying that quote to the thoughts of the masses, bringing it in line with &amp;quot;Art&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
Clickbait is the practice of using deceptive or manipulative headlines to entice readers to click on a dubious news story, often with the purpose of generating ad revenue.&lt;br /&gt;
&lt;br /&gt;
This comic calculates the p-value of clickbait article and videos, nowadays very common on the web. The formula depicted is commonly known as the Bayes theorem, and a more common expression of that theorem is p(A|B) = p(B|A) * p(A) / p(B). Here, it depicts the odds of a clickbait article being clicked depending on two different headlines.&lt;br /&gt;
&lt;br /&gt;
The comic does not present a correct example of null and alternative hypotheses. As the alternative hypothesis predicts that chocolate will '''improve performance''' (i.e., a one-tailed, directional hypothesis) the null hypothesis should predict that chocolate will '''do nothing''' &amp;lt;u&amp;gt;or&amp;lt;/u&amp;gt; '''make performance worse'''.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Wrong layout, and the Math extension is not installed yet.}}&lt;br /&gt;
Clickbait-Corrected p-Value :&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
P&amp;lt;sub&amp;gt;CL&amp;lt;/sub&amp;gt; = P&amp;lt;sub&amp;gt;traditional&amp;lt;/sub&amp;gt; * click(H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)/click(H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt;)}&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; : NULL hypothesis (&amp;quot;Chocolate has no effect on athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; : Alternative hypothesis (&amp;quot;Chocolate boosts athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
click(H) : Fraction of test subjects who click on a headline announcing that H is true&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&amp;quot;When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Statistics]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158123</id>
		<title>2001: Clickbait-Corrected p-Value</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2001:_Clickbait-Corrected_p-Value&amp;diff=158123"/>
				<updated>2018-06-01T18:00:56Z</updated>
		
		<summary type="html">&lt;p&gt;IronGargoyle: /* Explanation */ hypotheses are not correctly structured&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2001&lt;br /&gt;
| date      = June 1, 2018&lt;br /&gt;
| title     = Clickbait-Corrected p-Value&lt;br /&gt;
| image     = clickbait_corrected_p_value.png&lt;br /&gt;
| titletext = When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Please first explain p-value. Most people don't know. - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic references ''hypothesis testing'' in statistics. When one wishes to determine if a given assumption is statistically supported by the data, a ''hypothesis test'' may be used. Usually, such a test takes the form of a null hypothesis, H0, which basically states that the status quo is maintained (here, that chocolate has ''no effect'' on athletic performance). The alternative hypothesis, H1, is the one the statistician wishes to put to the test (here, that chocolate ''increases'' athletic performance). Normally, the mathematician would gather data, run some calculations, and come up with a ''p-value''. This is the probability that the sample's results were obtained solely by chance, assuming that the null hypothesis is held to be true. Thus, the lesser the p-value, the less likely the null hypothesis is true. Below a certain point, usually 5% or 1%, we reject H0 and accept H1 to be true. However, the P-value being set at either 5% or 1% is a matter of convention and is largely continued through tradition. The comic may be a joke referencing the arbitrary nature of that.&lt;br /&gt;
&lt;br /&gt;
In this version, the p-value is corrected by a factor which increases when readers click a headline stating that H1 is true, and decreases when people click a headline stating that H0 is true. This has the effect of ''increasing'' the p-value if readers favor H1 over H0, leading to a greater chance of ''H0'' being accepted. This seems to operate under the assumption that whatever clickers of clickbait believe, the reverse is likely to be true.&lt;br /&gt;
&lt;br /&gt;
As the statistical results now depend on people's beliefs about the hypothesis, this is as far from actual science as one can get. However, in a way, it is more in tune with a quote by Arbuthnot (one of the originators of the use of p-values) attributing variation to active thought rather than chance, &amp;quot;From whence it follows, that it is Art, not Chance, that governs.&amp;quot; Randall applying that quote to the thoughts of the masses, bringing it in line with &amp;quot;Art&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
Clickbait is the practice of using deceptive or manipulative headlines to entice readers to click on a dubious news story, often with the purpose of generating ad revenue.&lt;br /&gt;
&lt;br /&gt;
This comic calculates the p-value of clickbait article and videos, nowadays very common on the web. The formula depicted is commonly known as the Bayes theorem, and a more common expression of that theorem is p(A|B) = p(B|A) * p(A) / p(B). Here, it depicts the odds of a clickbait article being clicked depending on two different headlines.&lt;br /&gt;
&lt;br /&gt;
The comic does not present a correct example of a null and alternative hypothesis. As the alternative hypothesis predicts that chocolate will '''improve performance''' (i.e., a one-tailed, directional hypothesis) the null hypothesis should predict that chocolate will '''do nothing''' &amp;lt;u&amp;gt;or&amp;lt;/u&amp;gt; '''make performance worse'''.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Wrong layout, and the Math extension is not installed yet.}}&lt;br /&gt;
Clickbait-Corrected p-Value :&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
P&amp;lt;sub&amp;gt;CL&amp;lt;/sub&amp;gt; = P&amp;lt;sub&amp;gt;traditional&amp;lt;/sub&amp;gt; * click(H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)/click(H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt;)}&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;0&amp;lt;/sub&amp;gt; : NULL hypothesis (&amp;quot;Chocolate has no effect on athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
H&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; : Alternative hypothesis (&amp;quot;Chocolate boosts athletic performance&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
click(H) : Fraction of test subjects who click on a headline announcing that H is true&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&amp;quot;When comparing hypotheses with Bayesian methods, the similar 'clickbayes factor' can account for some harder-to-quantify priors.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Statistics]]&lt;/div&gt;</summary>
		<author><name>IronGargoyle</name></author>	</entry>

	</feed>