Abstract
Talk of sensory qualities soon runs into puzzles, both about the nature of properties and about the status of mental predicates. Clark wishes to prepare the way for an eventual reduction of qualia-talk to neurophysiology, while postponing or taking an indirect approach to some of the large philosophical questions involved. Thus, for instance, rather than wading directly into the debate about what color is, he concentrates on the problem of why a particular stimulus looks colored to a particular observer.