 A powers-based implementation of the metameric  morals[45]  also provides a basis for a response to a third objection, due to Worley (1997), according to which the constituents of beliefs are not constituents of their physical realizers, as they would have to be if (as per Worley’s constitution-based account;  see §3.5)  beliefs were determinables of physical  determinates.[46]  Supposing that constituents are associated with sets of powers, the content of a belief may be a constituent of its physical realizers, after all—not qua content per se, but qua the relevant subset of powers.