This books ushers in a new way of talking about social phenomena. It develops an ontology of social objects on the basis of the claim that registration or inscription—the leaving of a trace to be called up later—is what is most fundamental to them. In doing so, it systematically organizes concepts and theories that Ferraris's predecessors—most notably Derrida, in his project of a positive grammatology—left in an impressionistic state. Ferraris begins by redefining ontology as a way of cataloguing the world. Before any epistemology can discuss the validity of scientific or nonscientific judgments, one faces a collection of objects, be they natural, ideal, or social. Among these, Ferraris focuses on social objects, elaborating a theory of experience in the social world that leads him to define social objects as 'inscribed acts.' He then uses this notion to interpret social phenomena, also in light of a systematic discussion of the concept of performatives, from Austin to Derrida and