With his detailed readings of works from Plato to Rousseau to Heidegger, Derrida frequently argues that Western philosophy has uncritically allowed metaphorical depth models to govern its conception of language and consciousness. He sees these often unacknowledged assumptions as part of a "metaphysics of presence" to which philosophy has bound itself. This "logocentrism," Derrida argues, creates "marked" or hierarchized binary oppositions that have an effect on everything from our conception of speech's relation to writing to our understanding of racial difference. Deconstruction is an attempt to expose and undermine such "metaphysics."