Book excerpt: This book articulates the key theoretical assumptions of poststructuralism, but also probes its limits, evaluates rival approaches and elaborates new concepts. Building on the work of Derrida, Foucault, Heidegger, Lacan, Laclau, Lévi–Strauss, Marx, Saussure and Žižek, the book also provides a distinctive version of the poststructuralist project.