ABSTRACT
Stathis Psillos demands a way to identify capacities. It seems we either need laws-‘laws individuate properties; properties are what they are because of the laws they participate in’—or a set of behaviours that occur when the capacity is manifested (Psillos this volume: 15). But, he observes, I don’t like laws, and I say that some capacities can be manifested in almost any behaviour. Neither of these claims is entirely accurate, however.
