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''Welcome to the Explain XKCD wiki''
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__NOTOC__{{DISPLAYTITLE:explain xkcd}}
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<font size=5px>''Welcome to the '''explain [[xkcd]]''' wiki!''</font>
  
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We have collaboratively explained [[:Category:Comics|'''{{#expr:{{PAGESINCAT:Comics}}-9}}''' xkcd comics]],
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<!-- Note: the -9 in the calculation above is to discount subcategories (there are 8 of them as of 2013-02-27),
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    as well as [[List of all comics]], which is obviously not a comic page. -->
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and only {{#expr:{{LATESTCOMIC}}-({{PAGESINCAT:Comics}}-9)}}
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({{#expr: ({{LATESTCOMIC}}-({{PAGESINCAT:Comics}}-9)) / ({{PAGESINCAT:Comics}}-9) * 100 round 0}}%)
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remain. '''[[Help:How to add a new comic explanation|Add yours]]''' while there's a chance!
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== Latest comic ==
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==Latest Comic==
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The latest comic is number [[1089]]
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== Welcome ==
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Please sign up for an account and contribute to the Explain XKCD wiki!  We need explanations for comics, characters, themes, memes and everything in between. If it is referenced in an [http://www.xkcd.com XKCD] web comic, it should be in here.
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== New here? ==
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== Rules ==
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Don't be a jerk.  There are a lot of comics that don't have set in stone explanations, feel free to put multiple interpretations in the wiki page for each comic.
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If you want to talk about a specific comic, the Discussion page is perfect for that.
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Please only submit material directly related to —and helping everyone better understand— xkcd... and of course ''only'' submit material that can legally be posted (and freely edited.)  Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked.
  
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[[Category:Root category]]

Revision as of 05:35, 4 March 2013

Welcome to the explain xkcd wiki!

We have collaboratively explained 5 xkcd comics, and only 1980 (39600%) remain. Add yours while there's a chance!

Latest comic

Go to this comic explanation

Meteorologist
Hi, I'm your new meteorologist and a former software developer. Hey, when we say 12pm, does that mean the hour from 12pm to 1pm, or the hour centered on 12pm? Or is it a snapshot at 12:00 exactly? Because our 24-hour forecast has midnight at both ends, and I'm worried we have an off-by-one error.
Title text: Hi, I'm your new meteorologist and a former software developer. Hey, when we say 12pm, does that mean the hour from 12pm to 1pm, or the hour centered on 12pm? Or is it a snapshot at 12:00 exactly? Because our 24-hour forecast has midnight at both ends, and I'm worried we have an off-by-one error.

Explanation

Ambox notice.png This explanation may be incomplete or incorrect: Created by an OVERLY ANALYTICAL METEOROLOGIST - Please change this comment when editing this page. Do NOT delete this tag too soon.

Although we’re constantly exposed to them, many (most?) people don’t understand the details of how to properly interpret weather forecasts. This comic takes this to the ridiculous extreme of the weather reporters themselves not understanding, and asking questions about it while on-air. It shows questions asked by three different people with different backgrounds: mathematics, linguistics, and software development.

[Incomplete] The meteorologist with a background in math had a background in probability. This is shown when he asks if each hour is independent or correlated. If each hour were independent, there would have been a 67.232% chance to rain at least once. However, if the hours had been correlated, the chance would be less, since if it didn't rain in the first hour, it would decrease the chance of rain in the next hours. However, it would make it more likely of raining in all 5 hours, as it would be a .032% chance if it wasn't correlated. But if it was correlated, rain in the first hour would make it more likely to rain in the subsequent hours.

Transcript

[Cueball is presenting a weather forecast while seated with his arms resting on a table. The graphic to the left of Cueball shows five hours from 12pm to 4pm, each with a rainy cloud icon and the figure 20%. The "News 4 Weather" logo is shown on the bottom left.]
Cueball: Our forecast says there's a 20% chance of rain for each of the next five hours.
Cueball: How likely is it to rain this afternoon? It's a simple question, but I don't know the answer. Is each hour independent? Correlated? Or is rain guaranteed and we're just unsure of the timing?
Cueball: It says "scattered showers." Is this the chance of rain somewhere in your area? How big is your area? What if you have two locations you're worried about?
Cueball: I've asked management, but they've stopped answering my emails, so—hang on, the security guy is coming over.
[A black screen is shown with white text:]
Technical Difficulties
We apologize for hiring a meteorologist with a pure math background.
We'll be back on the air shortly.
News 4
[Cueball is replaced with Blondie.]
Blondie: Sorry about that. Hi, I'm your new meteorologist.
Off-panel voice: And you're not a mathematician, right?
Blondie: No. I do have a linguistics degree.
Off-panel voice: That's fine.
Blondie: It might rain this afternoon.
Blondie: But what is "it" here? Is it a true dummy pronoun, as in the phrase "It's too bad?" Or is the weather an entity?
Blondie: Also, what if I say, "It's hot out, and getting bigger?"
Off-panel voice: Security!


Is this out of date? Clicking here will fix that.

New here?

You can read a brief introduction about this wiki at explain xkcd. Feel free to sign up for an account and contribute to the wiki! We need explanations for comics, characters, themes, memes and everything in between. If it is referenced in an xkcd web comic, it should be here.

  • List of all comics contains a complete table of all xkcd comics so far and the corresponding explanations. The red links (like this) are missing explanations. Feel free to help out by creating them! Here's how.

Rules

Don't be a jerk. There are a lot of comics that don't have set in stone explanations; feel free to put multiple interpretations in the wiki page for each comic.

If you want to talk about a specific comic, use its discussion page.

Please only submit material directly related to —and helping everyone better understand— xkcd... and of course only submit material that can legally be posted (and freely edited.) Off-topic or other inappropriate content is subject to removal or modification at admin discretion, and users who repeatedly post such content will be blocked.

If you need assistance from an admin, feel free to leave a message on their personal discussion page. The list of admins is here.

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