 Gender is not just a social role that unifies social individuals. Witt takes it to be the social role — as she puts it, it is the mega social role that unifies social agents. First, gender is a mega social role if it satisfies two conditions (and Witt claims that it does): (1) if it provides the principle of synchronic and diachronic unity of social individuals, and (2) if it inflects and defines a broad range of other social roles. Gender satisfies the first in usually being a life-long social position: a social individual persists just as long as their gendered social position persists. Further, Witt maintains, trans people are not counterexamples to this claim: transitioning entails that the old social individual has ceased to exist and a new one has come into being. And this is consistent with the same person persisting and undergoing social individual change via transitioning. Gender satisfies the second condition too. It inflects other social roles, like being a parent or a professional. The expectations attached to these social roles differ depending on the agent’s gender, since gender imposes different social norms to govern the execution of the further social roles. Now, gender — as opposed to some other social category, like race — is not just a mega social role; it is the unifying mega social role. Cross-cultural and trans-historical considerations support this view. Witt claims that patriarchy is a social universal (2011a, 98). By contrast, racial categorisation varies historically and cross-culturally, and racial oppression is not a universal feature of human cultures. Thus, gender has a better claim to being the social role that is uniessential to social individuals. This account of gender essentialism not only explains social agents’ connectedness to their gender, but it also provides a helpful way to conceive of women’s agency — something that is central to feminist politics.