 Inner sense theorists are thus well placed to respond to those who claim that there is an unbridgeable explanatory gap between all physical, functional, and intentional facts, on the one hand, and the facts of phenomenal consciousness, on the other (Levine 1983; Chalmers 1996). And likewise they can explain the conceivability of zombies without becoming committed to the existence of any non-physical properties of experience (contra Chalmers 1996). It is the conceptual isolation of our higher-order recognitional concepts of experience that explains how there can be no a priori entailment between physical, functional, and intentional facts and the occurrence of states of type R or P (where R and P express purely recognitional concepts). 