Pi Yi Yipee Yay!

Today is Pi day, so my Google tells me. Pi is one of those truly mysterious and magical numbers - *the* mysterious and magical number, in fact. Can we conceive of a universe in which Pi is, say, 22/7? Going to a non-Euclidean geometry wouldn't be good enough, I think, because we would want Pi to be constant as well...

For the clebration, I'm planning to make mine apple, though rhubarb would be nice if I could get it...

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