 Even more important is the second question-begging element involved in step (4) of Strawson’s argument, for it displays the theoretical bias of the substance paradigm at a more fundamental level. Strawson sets up conditions for the ontological category or entity type that can constitute a space-time framework and claims in step (4) (i) that “things that are or possess bodies” can fulfill these conditions, and (ii) that therefore such things are “basic particulars.” In this way Strawson turns a common sense concept, viz. “material thing,” into a basic ontological category without asking whether it is possible that what we common-sensically call a ‘thing’ might not also ontologically be interpreted in terms of a category from process metaphysics (e.g., as a bundle of activities or, in a Whiteheadian fashion, as ongoing pattern of events). Strawson elsewhere rejects such an interpretation as “revisionary metaphysics” while metaphysics based on material things or substances is “descriptive,” but these adjectives are themselves in need of a convincing justification—as long as an ontological category fully captures the inferential content of a common sense concept, it is as descriptive as any other.