 McDaniel (2004) develops a version of concrete modal realism that posits multilocation; he dubs the view Modal Realism with Overlap (MRO). Like Lewis's (1986) modal realism, MRO treats possible worlds as concrete, spatiotemporal entities and holds that spacetime regions are ‘worldbound’: no spacetime region that is part of one world overlaps any spacetime region that is part of another world. Unlike Lewis's view, however, MRO claims that material objects are wholly present in more than one world. Specifically, MRO entails multilocation. It says that if Lewis is a philosopher in world w1 and a plumber but not a philosopher in world w2, then he is exactly located at two or more regions (one of which is a part of w1 and another of which is a part of w2).