 Policies against sexist discursive practices must not be so stringent that they undermine the creative development of new discursive practices and the semantic authority of members of oppressed groups.Tirrell has also written extensively on issues of metaphor.In a series of articles, she develops the view that any account of metaphor should center on what it is to interpret a bit of discourse metaphorically, rather than looking for semantic or syntactic markers that elicit such interpretations.