Genre is a word whose time has come — and gone — and might now, perhaps, be coming back again. Debates about particular literary kinds have been common in literary criticism since Aristotle's Poetics, but they acquired a new intensity and reflexivity in the third quarter of the twentieth century, as structuralists and post-structuralists struggled to redefine the concept of genre itself. From Northrop Frye's Anatomy of Criticism (1957) through Jacques Derrida's "Law of Genre" (1980), genre theory gave scholars a way to connect literary works to durable cultural patterns — or challenge the possibility of that connection.