# 207: What xkcd Means

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==Transcript== | ==Transcript== | ||

:What does XKCD mean? | :What does XKCD mean? | ||

− | + | ||

:It means saving a few seconds at a long red light via elaborate and questionably legal maneuvers. | :It means saving a few seconds at a long red light via elaborate and questionably legal maneuvers. | ||

− | :[ | + | :[One car of two sitting at a red light makes a right turn, then shifts over to the left and makes a left turn to go back the way it came. It then makes another right and continues on the road past the traffic light. This is shown with a red arrow.] |

− | + | ||

:It means having someone call your cell phone to figure out where it is. | :It means having someone call your cell phone to figure out where it is. | ||

− | :[The | + | :[The panel shows an inset where someone is making a cell phone call. In the panel itself, a second person is looking at a dog.] |

+ | :Dog's stomach: ''Ring'' | ||

+ | |||

:It means calling the Ackermann function with Graham's number as the arguments just to horrify mathematicians. | :It means calling the Ackermann function with Graham's number as the arguments just to horrify mathematicians. | ||

+ | :[The mathematical function "A(g<sub>64</sub>, g<sub>64</sub>) =" appears in the panel. Next to the equals sign stands a mathematician, clutching his head.] | ||

:Mathematician: Aughhh | :Mathematician: Aughhh | ||

− | + | ||

:It means instinctively constructing rules for which floor tiles it's okay to step on and then walking funny ever after. | :It means instinctively constructing rules for which floor tiles it's okay to step on and then walking funny ever after. | ||

+ | :[An approximately 8 by 8 square of floor tiles is shown; the first, fourth and seventh across in the first, fourth and seventh rows are black and the rest are white. A guy and girl are shown next to it, walking on what is presumed to be the same pattern of floor tiles.] | ||

:[Line indicating the uppermost right black tile: Black tiles okay.] | :[Line indicating the uppermost right black tile: Black tiles okay.] | ||

:[Line indicating tile directly below it: White tiles directly between black tiles okay.] | :[Line indicating tile directly below it: White tiles directly between black tiles okay.] |

## Revision as of 18:46, 14 February 2014

What xkcd Means |

Title text: It means shuffling quickly past nuns on the street with ketchup in your palms, pretending you're hiding stigmata. |

## Explanation

This comic purports to finally answer the question, "What does 'xkcd' mean?" However, instead of giving an answer as to what the letters mean (it's just a random, unpronounceable four-letter string), he offers five quirky behaviors. It's reminiscent of TV commercials that ask, "What does [brand name] mean? It means [happy activity]!".

The first panel shows a driver making a right turn at a red light, a U-turn on the connecting road, and then another right turn, returning him to his original direction. Right turns at red lights and U-turns are legal in some states and at some intersections, so it's possible this complicated maneuver is legal and would save time over waiting for the light.

The second panel shows Cueball searching for his mobile phone by having his friend call it from his phone to help him to find it, only to hear a ring from inside of his dog's stomach.

In the third panel, Graham's number is a large number (celebrated as the largest number ever used in a proof), and the Ackermann function is a fast-growing function. Actually, A(g_{64}, g_{64}) is less than g_{65}.

The fourth panel shows somebody walking in a pattern based on the position of black and white tiles on the floor. This is further referenced in 245: Floor Tiles.

The title text refer to stigmata, marks corresponding to Jesus' crucifixion wounds. Devout Catholics have claimed to have spontaneously developed stigmata.

## Transcript

- What does XKCD mean?

- It means saving a few seconds at a long red light via elaborate and questionably legal maneuvers.
- [One car of two sitting at a red light makes a right turn, then shifts over to the left and makes a left turn to go back the way it came. It then makes another right and continues on the road past the traffic light. This is shown with a red arrow.]

- It means having someone call your cell phone to figure out where it is.
- [The panel shows an inset where someone is making a cell phone call. In the panel itself, a second person is looking at a dog.]
- Dog's stomach:
*Ring*

- It means calling the Ackermann function with Graham's number as the arguments just to horrify mathematicians.
- [The mathematical function "A(g
_{64}, g_{64}) =" appears in the panel. Next to the equals sign stands a mathematician, clutching his head.] - Mathematician: Aughhh

- It means instinctively constructing rules for which floor tiles it's okay to step on and then walking funny ever after.
- [An approximately 8 by 8 square of floor tiles is shown; the first, fourth and seventh across in the first, fourth and seventh rows are black and the rest are white. A guy and girl are shown next to it, walking on what is presumed to be the same pattern of floor tiles.]
- [Line indicating the uppermost right black tile: Black tiles okay.]
- [Line indicating tile directly below it: White tiles directly between black tiles okay.]
- [Line indicating a white tile in the last column over: Not okay.]

## Trivia

- In his Google-speech, Randall said that
*xkcd*originated as a previously unused random 4 letter string which he used, e.g., as his account name on various internet services.

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# Discussion

I do the last panel ALL THE FRIGGIN' TIME. Alpha (talk) 20:07, 8 March 2013 (UTC) Graham's Number has not had that title for several years now.... See here: http://googology.wikia.com/wiki/Graham's_number XKCD also means getting addicted to webcomics because they are too funny

-108.162.237.175 21:57, 22 June 2015 (UTC)

A question, what is meant with "(In fact, A(g64, g64) is less than g65)"? Is g65 more than g64? Is it much more? Is A(g64, g64 "insanely large" compared to what you would expect or not? Maplestrip (talk) 13:05, 24 June 2015 (UTC)

- It means that mathematicians who read XKCD are not horrified by the idea, but calmly compute the result. (g65 is obviously more than g64 ; both Graham's number and Ackermann functions are methods to make ludicrously high numbers, and the "only slightly more" means that they growing in roughly same ludicrous speed) -- Hkmaly (talk) 02:04, 2 June 2016 (UTC)

You know, if everyone did the traffic thing at intersections, it would basically be the same as a roundabout. --162.158.102.150 16:19, 26 November 2015 (UTC)

Apparently (page 28) some intersections where I live are designed *for* the maneuver in panel 1.--Troy0 (talk) 17:30, 29 July 2016 (UTC)