https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&user=172.68.50.51&feedformat=atomexplain xkcd - User contributions [en]2024-03-29T00:18:13ZUser contributionsMediaWiki 1.30.0https://www.explainxkcd.com/wiki/index.php?title=Talk:2721:_Euler_Diagrams&diff=304363Talk:2721: Euler Diagrams2023-01-08T11:51:06Z<p>172.68.50.51: </p>
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Has anyone made a Venn Diagram of the differences and similarities between Euler Diagrams and Venn Diagrams before? '''Tiny Desk Engineer''' ([[User talk:TinyDeskEngineer|talk]]) "My user page can't be vandalized if it never existed" 21:30, 6 January 2023 (UTC)<br />
:Yes. See https://en.m.wikipedia.org/wiki/Euler_diagram#/media/File%3AEuler_and_Venn_diagrams.svg [[User:John|John]] ([[User talk:John|talk]]) 12:19, 7 January 2023 (UTC)<br />
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I made a transcript. {{User:PoolloverNathan/Signature}} 21:34, 6 January 2023 (UTC)<br />
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Other things named after Euler include: {{w|Euler method}}, {{w|Euler angles}}, {{w|Euler equations (fluid dynamics)}}, and lots of other stuff in this article: {{w|Contributions of Leonhard Euler to mathematics}}. [[User:Orion205|Orion205]] ([[User talk:Orion205|talk]]) 03:22, 7 January 2023 (UTC)<br />
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I can't hear Euler without thinking of one episode of Big Bang Theory when they were goofing around with a Euler Disk. :) [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 06:04, 7 January 2023 (UTC)<br />
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If we are gonna nitpick numbers are Euler's '''Words'''; Single digit would be Euler's '''Letter''' [[Special:Contributions/172.68.51.159|172.68.51.159]] 17:42, 7 January 2023 (UTC)<br />
:came for this. Of course, in English '''a''' and '''I''' would be in the intersection of Euler numbers and Euler digits. [[Special:Contributions/172.68.50.51|172.68.50.51]] 11:51, 8 January 2023 (UTC)<br />
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This is probably a response to comments he presumably received about past comics (e.g. https://www.explainxkcd.com/wiki/index.php/Category:Euler_diagrams) which were Euler diagrams labelled Venn [[Special:Contributions/172.69.22.62|172.69.22.62]] 20:31, 7 January 2023 (UTC)<br />
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Don’t forget Eulerian graphs! [[User:Klevasseur|Klevasseur]] ([[User talk:Klevasseur|talk]]) 22:09, 7 January 2023 (UTC)<br />
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John Venn's cricket bowling machine would bowl cricket balls, like a baseball pitching machine. It was not a tiny pinsetter. [[Special:Contributions/172.70.110.236|172.70.110.236]] 23:34, 7 January 2023 (UTC)<br />
:...it took a while for me to get the reason for that statement, Grasshopper. Spent far too long thinking about how (and, indeed, ''why'') you'd use an automated stump-resetting machine (or two, one at each end) when there are several people pretty much on the spot(s) already. ;) [[Special:Contributions/172.70.85.224|172.70.85.224]] 02:54, 8 January 2023 (UTC)</div>172.68.50.51https://www.explainxkcd.com/wiki/index.php?title=2713:_Data_Point&diff=3023282713: Data Point2022-12-22T05:31:04Z<p>172.68.50.51: ImageSync(this[2713], xkcd[2713])</p>
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<div>{{comic<br />
| number = 2713<br />
| date = December 19, 2022<br />
| title = Data Point<br />
| image = https://imgs.xkcd.com/comics/data_point.png<br />
| imagesize = 315x409px<br />
| noexpand = true<br />
| titletext = In general you should only include your single best data point in the paper. The rest of the data can go in the supplementary materials.<br />
}}<br />
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==Explanation==<br />
{{incomplete|Created by a REALLY COOL DATA POINT. Do NOT delete this tag too soon.}}<br />
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When scientific measurements are made, the conclusions are almost always based on many data points observed in relation to each other. The comic jokes that a single data point can somehow be of such interest in isolation that the other data may be disregarded. In reality, a single datum can almost never represent what the information in the related data taken together indicate. <br />
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[[Randall]]'s caption states that a figure illustrating a single datum thus constitutes a "science power move." (Similarly to the [[:Category:Science tip|science tips]] of previous comics.)<br />
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This is most likely intended as factitious satire, because the purpose of a chart or graph figure is to present multiple data which would be less clear as tabular or textual data, so there is rarely any reason to devote a figure to a single datum, regardless of its importance. The canonical counterexample is presentation of [https://www.sciencedirect.com/science/article/pii/B9780123971609000059 the mean of a group of measurements]. ([https://ars.els-cdn.com/content/image/3-s2.0-B9780123971609000059-f05-01-9780123971609.jpg Figure here] — note the point's specular reflection indicating 3-D.) A less common counterexample might be when an interesting singular {{w|matrix decomposition}} such as an {{w|eigenvector}} is characterized, but this would only occur when such a datum is highly dimensional. It also could be a joke about papers which only highlight particularly interesting or significant data without including the background measurements or similar mundane information necessary to fully understand or reproduce the findings. While there are [https://www.aje.com/en/arc/data-not-shown-4-reasons-omit-figure-or-table/ accepted reasons for this practice], it can be annoying when trying to follow an otherwise useful procedure or comparing aspects of the results the authors did not anticipate.<br />
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The title text suggests relegating all the other data to supplementary materials, presumably to avoid detracting from the single "cool" datum.<br />
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==Transcript==<br />
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:[A graph is shown. There are regularly spaced unreadable labels along both axes. In the center there is a single data point with short symmetrical vertical error bars. The graph is dominated by a round white center behind the point from where brilliant white lines emanate out radially in all directions, filling most of the background area, and looking like a star or the sun. Beneath the graph there are two lines of unreadable caption text to the left, next to a rectangular legend box on the right with one dot, indicating the data point, and an unreadable label. Above the graph it is titled:]<br />
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:Figure 2.<br />
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:[Caption beneath the panel:]<br />
:Science power move: When one of your data points is really cool, devote a whole figure to it.<br />
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{{comic discussion}}<br />
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[[Category:Science]]<br />
[[Category:Scientific research]]</div>172.68.50.51https://www.explainxkcd.com/wiki/index.php?title=Talk:2687:_Division_Notation&diff=297108Talk:2687: Division Notation2022-10-20T08:17:38Z<p>172.68.50.51: </p>
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Fun fact: In Poland, we don't write the long division like that; we just write A:B with the bar above. I was VERY confused the first time I saw that notation. [[Special:Contributions/172.70.246.235|172.70.246.235]] 21:03, 19 October 2022 (UTC)<br />
:Unrelated to {{w|Polish notation}}, i presume? [[Special:Contributions/172.70.134.13|172.70.134.13]] 22:43, 19 October 2022 (UTC)Bumpf<br />
:In German elementary school we learned the a:b notation. When we learned more complex divisions in secondary school it was with the "scientist" notation. And as I am a software engineer AND (presumably) a normal person I use in general the respective notations. [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 07:24, 20 October 2022 (UTC)<br />
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For me, the version on the xkcd website has an additional line ("A/B: Software Engineer") that's not on this site. I think the comic might have been updated. Is anyone else seeing that? [[User:JBYoshi|JBYoshi]] ([[User talk:JBYoshi|talk]]) 23:20, 19 October 2022 (UTC)<br />
:Updated. [[User:Natg19|Natg19]] ([[User talk:Natg19|talk]]) 00:31, 20 October 2022 (UTC)<br />
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For the Unicode one, I think it’s a reference to ⁄ (U+2044, fraction slash) or characters like ½, ¼, etc. - [[User:Cherryblossom|Cherryblossom]] ([[User talk:Cherryblossom|talk]]) 00:24, 20 October 2022 (UTC)<br />
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Is it important to note that 1/2 auctocorrects to ½ in many text-based programs like Microsoft Word?--[[User:Theunlucky|Theunlucky]] ([[User talk:Theunlucky|talk]]) 02:32, 20 October 2022 (UTC)<br />
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It's possible to use fraction-style notation in LaTeX by using \frac, or am I missing something?--[[Special:Contributions/162.158.2.125|162.158.2.125]] 05:49, 20 October 2022 (UTC)<br />
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"the long division symbol is only used in some countries". Only English-speaking ones, to be more precise. Most of the countries of the world use a different notation. [[Special:Contributions/172.68.51.80|172.68.51.80]] 06:19, 20 October 2022 (UTC)<br />
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In the UK, the 'long division symbol' is nowadays often referred to (particularly with Primary classes, children aged 4 - 11) as the "Bus Stop Method". Because it looks like a UK bus shelter. [[User:MarquisOfCarrabass|MarquisOfCarrabass]] ([[User talk:MarquisOfCarrabass|talk]]) 07:07, 20 October 2022 (UTC)<br />
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As a Dutch primary schoolchild, I have used a÷b for calculations and "a over b" for fractions (e.g. ⅘). <br />
For more difficult divisions, like what is 785/35, we used [https://nl.m.wikipedia.org/wiki/Staartdeling Staartdelingen] (nl), long division, of which the primary notation is 35/735\.<br />
I think in early highschool we started using a over b for more complex calculations, "like (x+3) over 5 = 2, what is x". I had up to this XKCD never seen B⟌A, and would confuse it for what we use as square root symbol (√). [[User:IIVQ|IIVQ]] ([[User talk:IIVQ|talk]]) 07:16, 20 October 2022 (UTC)<br />
:Come to think of it, it's kind of odd that we used ":" for division. Why are there this many different division notations anyway? Same for multiplication. There's x, *, ⋅, x but centered vertically, and concatenation (for letter variables)!<br />
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In Austria, school children are using the "scientist" notation from this comic. [[Special:Contributions/172.68.50.51|172.68.50.51]] 08:17, 20 October 2022 (UTC)</div>172.68.50.51https://www.explainxkcd.com/wiki/index.php?title=2685:_2045&diff=2967732685: 20452022-10-15T09:20:43Z<p>172.68.50.51: </p>
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<div>{{comic<br />
| number = 2685<br />
| date = October 14, 2022<br />
| title = 2045<br />
| image = 2045_2x.png<br />
| imagesize = 350x457px<br />
| noexpand = true<br />
| titletext = "Sorry, doctor, I'm going to have to come in on a different day--I have another appointment that would be really hard to move, in terms of the kinetic energy requirements."<br />
}}<br />
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==Explanation== <br />
{{incomplete|Created by a GIGANTIC NUCLEAR FURNACE (THE SUN) - Please change this comment when editing this page. Do NOT delete this tag too soon.}}<br />
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The characters are talking about upcoming total {{w|solar eclipses}}. Partial solar eclipses are fairly frequent (2–5 per year), but total eclipses are less frequent (about every 18 months), and most of them will not be in convenient locations for a particular set of people. Cueball seems to be talking about total eclipses visible in much of North America: {{w|Solar eclipse of April 8, 2024|April 8, 2024}} and {{w|Solar eclipse of August 12, 2045|August 12, 2045}}. (There's also a {{w|annular eclipse}} on October 14, 2025.) Making plans for eclipses is awkward given the uncertainty present for anything else far in the future, such as whether the attendees will have children by then, and even whether another scheduling program will catch on and replace Google Calendar.<br />
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Black Hat claims he can't make it, as he has "a thing" on August 12, 2045. Events for that far in the future usually have not yet been scheduled for a precise date{{Citation needed}}, and this combined with the fact that Black Hat remembers this date without checking implies that this could be another of his grand and sinister plans... or he just doesn't want to go.<br />
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The title text is someone cancelling a medical appointment to see the eclipse. The eclipse is hard to move because that would require hastening or delaying it by moving the Earth, Moon or Sun, any of which would require vast amounts of energy.{{Citation needed}} People also don't often schedule doctor's appointments decades in advance.{{Citation needed}} This was published a year before the next eclipse so, if you're someone who plans things a year in advance this serves as a reminder to put it on your calendar.<br />
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==Transcript==<br />
{{incomplete transcript|Do NOT delete this tag too soon.}}<br />
:[Cueball, a friend also drawn as Cueball, Danish, and Black Hat are standing together. Danish is looking at her phone.]<br />
:Cueball: ...And then after the one in 2024, there's another on August 12, 2045.<br />
:Friend: We're in! We can invite our kids, assuming we have any.<br />
:Danish: I'll create an event. Do you think we'll still be using Google Calendar in 2045?<br />
:Black Hat: Sorry, I'd love to make it, but I have a thing that day.<br />
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:Caption: It's weird making plans for eclipses.<br />
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{{comic discussion}}<br />
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[[Category:Comics featuring Cueball]]<br />
[[Category:Multiple Cueballs]]<br />
[[Category:Comics featuring Danish]]<br />
[[Category:Comics featuring Black Hat]]</div>172.68.50.51