Centrally, Gilman argues that women must change their cultural identities. Early on, she mentions that humans are the only species in which the female has to depend on the male for survival. This dependence requires women to pay off their debt through domestic services, or “sex-functions”. Gilman argues that women “work longer and harder than most men, and not solely in maternal duties.” Further, Gilman states that female activities in general are directed by men. These sexual distinctions have led to an odd distribution of power and have been detrimental to both genders, in Gilman's view.