 Tye also emphasizes transparency in his account of introspection, though he limits his remarks to the introspection of conscious experience or “phenomenal character”. In his 2000 book, Tye develops a view like Dretske’s, analogizing introspection to displaced perception, though Tye unlike Dretske explicitly denies that inference is involved, instead proposing a mechanism similar to the sort of mechanism envisioned by simple monitoring accounts like those of Nichols and Stich (2003; see Section 2.2.1 above), a reliable process that, in the case of perceptual self-awareness, takes awareness of external things as its input and yields as its output awareness of phenomenal character. (The key difference between Tye’s 2000 account on the one hand and the Nichols and Stich account on the other that warrants the classification of Tye’s view here rather than in the section on self-detection models is this: Tye rejects the idea that the process is one of internal detection, while Nichols and Stich stress that idea. To adjudicate the dispute between those two positions, and to determine whether it might, in fact, be merely nominal, it would be helpful to have a clearer sense than has so far been given of what it means to say that one subpersonal system detects, or “monitors” or “scans”, the states or contents of another.) However, in his 2009 book, Tye rejects the displaced perception model in favor of a version of the transparency view that identifies phenomenal character with external qualities in the world, so that perceiving features of the world just is perceiving phenomenal character—a view that he recognizes is then charged with the difficult task of explaining how phenomenal character is a property (or “quality”) of external objects rather than, as is generally assumed, a property only of experiences of those objects.