What does it mean to say that something is “temporal” or that something “exists” in time? What is time? And how should we interpret the “ontology” of time? One important strand in twentieth century thought and the philosophy of time has given these fundamental questions a neat and tidy set of influential answers—according to this view, time itself is understood to be a kind of series, and the basic ontology of time is taken to consist of events, together with either the tenses, which get interpreted as special sorts of second order properties known as “A properties” (i.e. the properties of being either Past, Present, or Future), or with special sorts of second order relations, known as “B relations” (i.e. the relations of “earlier than”, “l...