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June 1, 2018 06:10 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/md29bHe7fNE/an-analogy-is-a-raft-you-use-t.html
An analogy is a raft you use to cross a river
In this Better Explained video, how the right analogies can make math joyful. "Numbers are like rocks." But what happens when the number is 0 or -1? The analogy breaks down. "OK, numbers are like points on a line," with zero at the center. But where on the line does the square root of -1 go? "OK, let's add another line at 90 degrees to the other number line, where imaginary numbers go."
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/md29bHe7fNE/an-analogy-is-a-raft-you-use-t.html
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