People like to make fun of epicycles because you can describe *any* orbit using epicycles. Here's an almost square orbit done using epicycles.
— John Carlos Baez (@johncarlosbaez) February 10, 2019
But this weakness is also their strength: a "Fourier series" is a way of writing any periodic function using epicycles. pic.twitter.com/4Li5RUL927
from Twitter https://twitter.com/johncarlosbaez
February 10, 2019 at 10:57AM
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