This exchange between Himalaya and meow was interesting:
I do think sexual selection played a big role in human evolution, but I don't think it was the major driver for bigger, stronger, more aggressive men - it doesn't make sense- why would there not be the same evolutionary pressure favouring women who were bigger, stronger and more aggressive themselves?
i think your confusing sexual selection with natural selection. natural selection will be a major driver in determining average hieght of women. sexual selection will only be a driver if men favour tall women.
I think the evolutionary pressure for bigger, stronger men was competition between men.
yes, as they compete for females.
Bigger, taller women have more successful live births than shorter, slighter women.
If sexual selection is presumed to be driven by a desire for viable progeny, selection should have favoured the tall of both sexes.
If, in fact, the male has always selected the smaller mate, he must have been selecting for reasons other than reproductive efficiency.
The most obvious reason for selecting a smaller, slighter mate is that she is easier to overpower.
Thus, the 'rules' of evolutionary sexual selection would suggest that the male selected partners based on the ease of raping them.
(At this point, I depart from the more traditional interpretations of human evolution.)