explain xkcd - User contributions [en]

Talk:2014: JWST Delays

2018-07-03T17:10:03Z

141.101.76.70:

Haha - I made this same graph 2 weeks ago! [[User:Cosmogoblin|Cosmogoblin]] ([[User talk:Cosmogoblin|talk]]) 17:39, 2 July 2018 (UTC)

Suggest the last sentence be made more general: "The title text refers to a fundamental question of the Big Bang Theory; will the universe expand forever, or will is collapse back on itself? The likely answer to this question has changed over the decades as new measurements have been made, and new theories such as dark matter and dark energy developed to explain the new measurements. Apparently, and for an analogous reason, between 2018 and 2020 the likely answer to the fundamental JWST question will change." [[User:GODZILLA|GODZILLA]] ([[User talk:GODZILLA|talk]]) 17:58, 2 July 2018 (UTC)
:I agree to the current sentence saying "and compares the universe’s accelerating expansion to the apparently ever-delaying schedule" but were the hell comes the conclusion that "the JWST will have enough delays to fill a universe"? This does not make any sense. [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 07:59, 3 July 2018 (UTC)

Does today's prediction of 2026 count? If that is included in the data set, it would then skew the best-fit line to be steeper. If a new prediction is made using that new best-fit line, that would further skew the line, and so on, causing the acceleration the title text anticipates between 2018 and 2020.[[Special:Contributions/162.158.63.88|162.158.63.88]] 20:10, 2 July 2018 (UTC)

> Until the slope of the line becomes more than one and the prediction goes to the past, right? [[Special:Contributions/108.162.216.16|108.162.216.16]] 21:55, 2 July 2018 (UTC)

:No, it doesn't count, because it's just '''prediction''', while the data set is of (official) '''planned launch dates'''. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 22:06, 2 July 2018 (UTC)

[[wikipedia:Heinz von Foerster#Doomsday equation|Von Foersters's doomsday]] is Friday 13th of November 2026. (cue Twilight Zone intro) [[Special:Contributions/162.158.89.175|162.158.89.175]] 21:20, 2 July 2018 (UTC)

Why does he keep saying it's 2021? Is he trying to skip Trump's term or what? --[[Special:Contributions/172.68.211.10|172.68.211.10]] 00:30, 3 July 2018 (UTC)
Why do you think that Trump will get only 1 term?[[Special:Contributions/141.101.76.70|141.101.76.70]] 17:10, 3 July 2018 (UTC)

This is the same chart for the new airport in Berlin. Sadly its slope is not less than one, it is indeed accelerating... 
2006     2011 
2010     2012 
2012     2013 
2013     2014 
2014     2016 
2015     2018 
2016     2018 
2017     2022 
[[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 07:57, 3 July 2018 (UTC)

I feel a quadratic regression would be needed to determine acceleration / deceleration [[Special:Contributions/172.68.59.24|172.68.59.24]] 13:54, 3 July 2018 (UTC)

Talk:1946: Hawaii

2018-01-24T17:09:53Z

141.101.76.70:

OMG - so funny, so timely, so close to home. One of our modern fears, in a crisis what would happen if I forgot the password! [[User:Rtanenbaum|Rtanenbaum]] ([[User talk:Rtanenbaum|talk]]) 14:02, 24 January 2018 (UTC)

"Created by a TWITTER" [[User:Halo422|Halo422]] ([[User talk:Halo422|talk]]) 14:28, 24 January 2018 (UTC)

Based on the situation that xkcd is offering, it makes me look like I can't be any governor or an official, since I tend to forget my password very easily, especially my social media ones. RIP me.15:02, 24 January 2018 (UTC)

Most implausible explanation I've ever heard. Why not use something other than a Twitter account to notify people, apparently there's an entire system set up for delivering messages to people's phones, I'm not sure a tweet should be part of the official rollback process.

163: Donald Knuth

2017-11-25T10:26:26Z

141.101.76.70: /* Explanation */

{{comic
| number = 163
| date = September 27, 2006
| title = Donald Knuth
| image = donald_knuth.png
| titletext = His books were kinda intimidating; rappelling down through his skylight seemed like the best option.
}}

==Explanation==
{{w|Donald Knuth}} is a computer science Professor Emeritus at {{w|Stanford University}} who is famous for writing {{w|The Art of Computer Programming}} and developing the TeX computerized typesetting system.

An array in computer science is a structure that stores multiple values in a fixed order, and the elements are accessed by their index number. In Pascal, for instance, one writes <tt>array[1]</tt> to access the first element in the array. Most "modern" (read: descended from C) languages use 0 as the index for the first element in the array, but it is possible (if one is careful about it) to ignore the 0th element and use 1 as the first index. In some programming languages (such as {{w|Ada (programming language)|Ada}}) it is possible to select an arbitrary range of indices for each array type, so the first index might be not only 0 or 1 but even 100000. [[Cueball]] is complaining that [[Black Hat]] was not consistent in his choice of where to start his arrays. This is a valid complaint, as a lack of such consistency can make coding errors both more likely and less easy to detect.

Black Hat cites Donald Knuth to support his rebuttal, but the quote he uses does not seem relevant. It turns out that Black Hat had illegally entered the professor's house in order to question him on indices. Donald Knuth's words were not an intellectual response to the question, but rather an alarmed response to the presence of an intruder. It is not clear if Black Hat is aware of this.

The title text suggests that Black Hat finds Donald's books intimidating, due to perhaps their size or complexity, to the extent that he considers breaking into Donald's house (a risky, difficult crime) to be the better option in finding his answer. Even for Donald Knuth's books, this is very exaggerated and illogical behaviour{{Citation needed}}.

==Transcript==
:[Black Hat and Cueball are sitting back to back at two separate desks, typing.]
:Cueball: Man, you're being inconsistent with your array indices. Some are from one, some are from zero.
:Black Hat: Different tasks call for different conventions. To quote Stanford algorithm's expert Donald Knuth, "Who are you? How did you get in my house?"
:Cueball: Wait, what?
:Black Hat: Well, that's what he said when I asked him about it.

{{comic discussion}}
[[Category:Comics featuring Black Hat]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Donald Knuth]]
[[Category:Programming]]
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