 This theme—that social hierarchies are sustained through myths of their natural basis—has prompted a tremendous amount of work on the construction of gender in particular (Delphy 1984; Scott 1986; MacKinnon 1989; Butler 1990; Wittig 1992; Alcoff 2006; Warnke 2008; Witt 2011a,c; Haslanger 2012), but also on the construction of other “naturalized” social categories such as race (Appiah 1996; Zack 2002; Warnke 2008) and in a somewhat different way, sexuality (Butler 1990, 1993; Fausto-Sterling 2000). Research in history, anthropology, literature, and sociology has chronicled the various mechanisms by which gender (and other such categories) is enforced, and research in psychology and biology has further loosened the ties between body types and social roles. Having witnessed the power of naturalizing “myths”, feminists tend to be wary of any suggestion that a category is “natural” or that what’s “natural” should dictate how we organize ourselves socially. However, there are several different de-naturalizing projects that are often mistaken for each other that engage different sorts of metaphysical issues.