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Today's human population is descended from twice as many women as men.
Today's human population is descended from twice as many women as men.

            I think this difference is the single most under appreciated fact about gender. To get that kind of difference, you had to have something like, throughout the entire history of the human race, maybe 80% of women but only 40% of men reproduced. Most of the mediocre men left no descendants at all.
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