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Perceptual Media, Glass and Mirrors

In this chapter, I argue that perceptual media like air or water are imperceptible. I show that, despite their lack of phenomenological features, perceptual media crucially affect what we see by selecting what is perceptually available to the perceiver. In the second part of the chapter, I argue that mirrors are visual media like air, water, and glass. According to this account, mirrors are transparent and invisible and cannot therefore have a distinctive look or appearance. In the last part of the chapter, I extend the general account of perceptual media to the sense organs themselves by showing that perceptual media not only include external entities causally involved in the perceptual process but also comprise the perceptual system itself.