Stardate 7578.23 -- The Enterprise encounters a race known as the Quaternions, who are invited for dinner and a tour. The Quaternions abruptly change their personality depending on what they're doing, from diplomacy to observation to problem solving.
Dr. Crusher discovers that they have evolved an advanced form of multiple personality disorder, with each Quaternion having a Real part and three Imaginary parts.
"Wait until you meet the Octonions,” one said.
Now, I may not be a big-city geomater, but I'm pretty sure that's a rectangular cuboid! 
Math Jokes in Alice in Wonderland
https://storica.club/blog/alice-is-math-jokes/
#HackerNews #MathJokes #AliceInWonderland #Humor #Literature #Education
Charles Lutwidge Dodgson taught mathematics at Christ Church, Oxford, for twenty-six years. He wrote textbooks defending Euclid and treatises on symbolic logic. The children's book he is now famous for is, when you read it as an adult, an extended joke about base-numbering systems, non-Euclidean geometry, and abstract identity, smuggled inside a story about a small girl falling down a hole.
Imaginary numbers aren't real, they can't hurt you!
sin(t) is a sine of the times.
Euler? I hardly know her!
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