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xkcd #3184: Funny Numbers
(imgs.xkcd.com)
Title text:
In 1899, people were walking around shouting '23' at each other and laughing, and confused reporters were writing articles trying to figure out what it meant.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3184/
42 is from The Hitchhiker’s Guide to the Galaxy by Douglas Adams. They built an enormous computer called Deep Thought that was the most powerful ever built to calculate the answer to the Ultimate Question of Life, the Universe and Everything. The computer, after 75 million years of processing, came up with 42. The confused crowd that gathered to hear the answer did not understand. Turns out, 42 is the correct answer, but what is the question?
So after that, they decide to build another computer, which is planet Earth, to figure out the question.