 Our perceptual faculties include at least our five senses: sight, touch, hearing, smelling, and tasting. We must distinguish between an experience that can be classified as perceiving that p (for example, seeing that there is coffee in the cup and tasting that it is sweet), which entails that p is true, and a perceptual experience in which it seems to us as though p, but where p might be false. Let us refer to this latter kind of experience as perceptual seemings. The reason for making this distinction lies in the fact that perceptual experience is fallible. The world is not always as it appears to us in our perceptual experiences. We need, therefore, a way of referring to perceptual experiences in which p seems to be the case that allows for the possibility of p being false. That’s the role assigned to perceptual seemings. So some perceptual seemings that p are cases of perceiving that p, others are not. When it looks to you as though there is a cup of coffee on the table and in fact there is, the two states coincide. If, however, you hallucinate that there is a cup on the table, you have a perceptual seeming that p without perceiving that p.