““The violence of men, though, is modulated by a slider: they can allocate their energy along a continuum from competing with other men for access to women to wooing the women themselves and investing in their children, a continuum that biologists sometimes call “cads versus dads.”103 In a social ecosystem populated mainly by men, the optimal allocation for an individual man is at the “cad” end, because attaining alpha status is necessary to beat away the competition and a prerequisite to getting within wooing distance of the scarce women.””