 For feminist philosophers of law, an ongoing set of issues has concerned which differences, if any, law may take into account consistently with equal treatment. There are biological differences, such as pregnancy and birth. There are statistical differences:  men are taller and stronger; women have longer life expectancies. There are historical differences:  women but not men have been systematically subordinated because of their sex—unable to vote, to own property, or to enter into legal contracts. Women are much more at risk to be raped. Women are much more likely to be responsible for caregiving in the family. Women are likely to earn less for the same work, and likely to be segregated in jobs that pay less than work that is male dominated. The feminist challenge is whether and how to acknowledge certain differences without entrenching stereotypes, reinforcing detrimental customs, promoting sexist socialization, or incurring backlash (Rhode 1997; Minow 1991)—and without compromising equality.