Built for bruising
The fighting hands, in turn, may have led to even more fighting.
"Once that selection for climbing went away, there may also have been this selection for physical fighting — particularly in males. And these proportions would have increased how dangerous an individual was in those fights," Carrier said.
As a follow-up, the team wants to study whether differences in women and men's hands (women in general have a longer index finger) potentially make women more dexterous and men more dangerous.
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