Michel Foucault also addressed the question of the author in critical interpretation. In his 1969 essay " What is an Author? ", he developed the idea of " author function " to explain the author as a classifying principle within a particular discursive formation. Foucault did not mention Barthes in his essay but its analysis has been seen as a challenge to Barthes' depiction of a historical progression that will liberate the reader from domination by the author. Jacques Derrida paid ironic homage to Barthes's "The Death of the Author" in his essay "The Deaths of Roland Barthes".