Ptolemaic vs. Copernican
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Richard McElreath on Twitter: "Bogus helio- vs geocentrism gif going around https://t.co/HtcXaMAm0F Both require epicycles. Fig 6.1 from my book: https://t.co/6VR4N2xn3L"
source: https://twitter.com/rlmcelre...
source: https://twitter.com/rlmcelre...