 In a first step, Banks explains how this core idea fits into a larger a posteriori physicalist picture. Physicalism, according to Banks, is best thought of as the view that mental supervenes on the physical. Standard physicalism focuses on the question of how mental properties and relations depend physical properties and relations. But standard physicalism does not specify the nature of the entities that exemplify these properties and relations. Any set of entities will do, so long as the supervenience relationships between the physical and mental properties and relations are preserved. Enhanced physicalism goes beyond standard physicalism in specifying the nature of the entities that bear or instantiate the relevant properties and relations: 