Topic: Ontology&possible worlds
Individuating Worlds in Extreme Modal
According to Lewis' brand of extreme modal realism [genuine realism], possible worlds are fusions of worldmates, and worldmates are those individuals that are spatiotemporally related. One cause of concern for Lewis is the explication of spatiotemporal relatedness, for there are clearly many types of spatiotemporal relations. In this paper I spell out this problem in some detail and attempt to go some way towards a resolution that favours Lewis' account.