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The Evolution of Bipedalism and Weapons in Primates
Human males have about say 35% more fat free mass and about 60% more muscle mass. And their skeletons indicate of a primate that's about maybe 45 to 50% larger than females. aggression, you know, I mentioned that there's less frequent aggression in human males than there is among say chimpanzees or closest relatives but it's equally lethal. If human males fight each other 1% of the time, then it's 100 times as lethal among humans.