 Third, it is unclear if physicalism is true. In fact, certain social entities seem to be good candidates for counterexamples to at least some versions of physicalism. One widely discussed problem with a supervenience interpretation of physicalism, for instance, is the “grounding” problem regarding the modal properties of coinciding objects (K. Bennett 2004b). The classic example used to discuss coinciding objects is an artwork—a statue—and the clay that constitutes it (Gibbard 1975). Other social entities work equally well for the same point, such as Gilbert’s cases of two distinct social groups with the same members (Gilbert 1987) and Epstein’s extension of such cases (Epstein 2015).