One of the earliest expressions of postgenderism was Shulamith Firestone's 1970 book "The Dialectic of Sex". It argues, end goal of feminist revolution must be, unlike that of the first feminist movement, not just the elimination of male privilege but of the sex distinction itself: genital differences between human beings would no longer matter culturally. (A reversion to an unobstructed pansexuality Freud's 'polymorphous perversity'—would probably supersede hetero/homo/bi-sexuality.) The reproduction of the species by one sex for the benefit of both would be replaced by (at least the option of) artificial reproduction: children would born to both sexes equally, or independently of either, however one chooses to look at it; the dependence of the child on the mother (and vice versa) would give way to a greatly shortened dependence on a small group of others in general, and any remaining inferiority to adults in physical strength would be compensated for culturally.