 One of the most detailed contemporary discussions of cases of perceptual learning is found in Siewert (1998: section 7.9). Siewert discusses in detail the role that learning plays in altering perceptual phenomenology, although he stops short of saying that this affects the high-level contents of perception. He writes, for instance, that there is a difference in perceptual phenomenology between just seeing “something shaped, situated, and colored in a certain way,” and recognizing that thing as a sunflower (or another type) (1998: 255). Siewert also writes that a person might look different to you after you know them for a long time than they did the first time you met them, and that your neighborhood might look different to you after you have lived there for a long time than the first time you moved in (pp. 256, 258). Furthermore, he writes about how a chessboard in midgame might look differently to a chess player than to a novice, and how a car engine might look differently to a mechanic than to someone unfamiliar with cars (1998: 258). These are all examples where learning affects one’s sensory phenomenology.