It turns out that flipping a coin isn't necessarily an entirely fair way of making a choice:
Using a high-speed camera
that photographed people flipping coins, the three researchers
determined that a coin is more likely to land facing the same side on
which it started. If tails is facing up when the coin is perched on
your thumb, it is more likely to land tails up. How much more
likely? At least 51 percent of the time, the researchers claim, and
possibly as much as 55 percent to 60 percent — depending on the
flipping motion of the individual. (Via MR)
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