 The main argument for representationalism appeals to the transparency of experience (cf. Tye 2000: 45–51). The properties that characterize what it’s like to have a sensory experience are presented in experience as properties of objects perceived: in attempting to attend to an experience, one seems to “see through it” to the objects and properties it is experiences  of.[2]  They are not presented as properties of the experience itself. If nonetheless they were properties of the experience, perception would be massively deceptive. But perception is not massively deceptive. In veridical perception, these properties are locally instantiated; in illusion and hallucination, they are not. On this view, introspection is indirect perception: one comes to know what phenomenal features one’s experience has by coming to know what objective features it represents. (Cf. also Dretske 1996, 1999.)