could it be otherwise, on the principle that autonomy entails self-authorship and self-definition? If sex (actual bodily difference) is no longer relevant in marriage, why should it be relevant anywhere else? Let autonomous persons exercise their self-authorship as they please, particularly where their own bodies are concerned. For public purposes we will simply replace the concept of sex, that biological binary, with the infinitely more malleable concept of gender, which is socially and individually