I love that you can just take fundamental constants and easily-memorized numbers and jam them together into approximations of things

69^π^√5 is a good approximation of Avagadro's number, for example

or that there are three and pi quarters liters in a gallon

(a bunch more: xkcd.com/1047/ )

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"three and pi quarters" is an amusing phrase and i'm not quite sure why

@Felthry I think it's that that is not where you expect a pi

when you're counting quarters, you're usually counting integer quarters and you're usually adding it to an integer, and you're adding it to an integer ... but not counting integer quarters, which is just weird

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