Spatiotemporal Structure
This chapter applies our reasoning about structure in physics to the debate about spacetime ontology. The discussion starts by explaining why the traditional debate about the existence of space(time) may well be at a stalemate: each side has plausible responses to the usual cases aimed against it. It then argues that reconstruing the debate as being about the fundamentality of spatiotemporal structure yields a substantive dispute that is relevant to current and future physics. It argues that the epistemic principles governing structure support substantivalism over relationalism, given current formulations of physics, and challenges the relationalist to come up with reformulations that meet certain criteria. The idea of direct formulations of physical theories and why they are preferable is also discussed.