 In a series of articles collected in her 2012 book, Sally Haslanger argues for a way to define the concept woman that is politically useful, serving as a tool in feminist fights against sexism, and that shows woman to be a social (not a biological) notion. More specifically, Haslanger argues that gender is a matter of occupying either a subordinate or a privileged social position. In some articles, Haslanger is arguing for a revisionary analysis of the concept woman (2000b; 2003a; 2003b). Elsewhere she suggests that her analysis may not be that revisionary after all (2005; 2006). Consider the former argument first. Haslanger’s analysis is, in her terms, ameliorative: it aims to elucidate which gender concepts best help feminists achieve their legitimate purposes thereby elucidating those concepts feminists should be using (Haslanger 2000b,  33).[8]  Now, feminists need gender terminology in order to fight sexist injustices (Haslanger 2000b, 36). In particular, they need gender terms to identify, explain and talk about persistent social inequalities between males and females. Haslanger’s analysis of gender begins with the recognition that females and males differ in two respects: physically and in their social positions. Societies in general tend to “privilege individuals with male bodies” (Haslanger 2000b, 38) so that the social positions they subsequently occupy are better than the social positions of those with female bodies. And this generates persistent sexist injustices. With this in mind, Haslanger specifies how she understands genders: