Scientists Just Proved Coin Tosses Are Flawed Using 350,757 Coin Flips

Everything you knew about coin flipping is wrong.

In 2007 a paper by Diaconis-Holmes-Montgomery developed a theoretical model of coin flipping and suggested human coin flipping results in a bias towards showing the same side. Just now, researchers conducted perhaps the largest coin flipping experiment in history by flipping coins 350,757 times and they confirmed this bias exists.

Fair coins tend to land on the same side they started: Evidence from 350,757 Flips
https://arxiv.org/abs/2310.04153

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Diaconis, Persi, Susan Holmes, and Richard Montgomery. "Dynamical bias in the coin toss." SIAM review 49.2 (2007): 211-235.
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