Meta Ontology

The aim of this paper is to offer a classification of particulars in terms of their relations to spatiotemporal and spatial regions. It begins with an examination of spatiotemporal particulars, and then explores the extent to which a parallel account can be offered of continuants, or spatial particulars that can endure and change over time, assuming such particulars exist. For every spatial particular there are spatiotemporal particulars that can be described as its life and parts thereof. But not every time-slice of a spatiotemporal particular yields a spatial region suitable for hosting a corresponding spatial particular. Events are spatiotemporal particulars though not all spatiotemporal particulars are events. Objects and states are spatial particulars though not all spatial particulars are objects or states. Spatial and spatiotemporal particulars can be either bare regions, or the contents or material contents of such regions, or property instantiations. It is left open whether events are contents of regions, property instantiations, or both. But it is argued that objects are material contents of spatial regions while states of objects are property instantiations. Spatiotemporal particulars can be changes or nonchanges. Events and states can be instantaneous while objects cannot