(...) the authors of the new paper conducted 350,757 flips, using different coins from 46 global currencies to eliminate a heads-tail bias between coin designs. (They also used a variety of people to rule out individuals with biased flipping techniques corrupting the results.) Regardless of the coin type, the same-side outcome could be predicted at 0.508, which rounds up perfectly to Diaconis’ “about 51 percent” prediction from 16 years ago.

[–] Madison420 0 points 1 year ago* (last edited 1 year ago)

I should be specific, they say 4⁰ someodd coins but don't mention a control coin or the effect of air.

You should probably reign in that snark as i specifically addressed your point.

Notably every coin has a face/tail bias because of how much material is removed for the design, a coin with no bias flipped in vacuum should have been the control to remove the design and/or air resistance.