 It is important to clarify the notions of gender and social individuality that Witt employs. First, gender is a social position that “cluster[s] around the engendering function … women conceive and bear … men beget” (Witt 2011a, 40). These are women and men’s socially mediated reproductive functions (Witt 2011a, 29) and they differ from the biological function of reproduction, which roughly corresponds to sex on the standard sex/gender distinction. Witt writes: “to be a woman is to be recognized to have a particular function in engendering, to be a man is to be recognized to have a different function in engendering” (2011a, 39). Second, Witt distinguishes persons (those who possess self-consciousness), human beings (those who are biologically human) and social individuals (those who occupy social positions synchronically and diachronically). These ontological categories are not equivalent in that they possess different persistence and identity conditions. Social individuals are bound by social normativity, human beings by biological normativity. These normativities differ in two respects: first, social norms differ from one culture to the next whereas biological norms do not; second, unlike biological normativity, social normativity requires “the recognition by others that an agent is both responsive to and evaluable under a social norm” (Witt 2011a, 19). Thus, being a social individual is not equivalent to being a human being. Further, Witt takes personhood to be defined in terms of intrinsic psychological states of self-awareness and self-consciousness. However, social individuality is defined in terms of the extrinsic feature of occupying a social position, which depends for its existence on a social world. So, the two are not equivalent: personhood is essentially about intrinsic features and could exist without a social world, whereas social individuality is essentially about extrinsic features that could not exist without a social world.