Vision resembles hearing in this way: mere reflection upon the experience fails to show that the objects were are directly conscious of in the experience are bodily sensations or even that they are sensations to be ascribed to the subject at all. We required an argument to show that the sound of the violinist is a sensory effect and not an occupant of the concert hall. The argument depended upon premises drawn from the science of sound which are unavailable to mere reflective common sense. If, as the materialist claims, sensations of sound are brain processes and thus have a definite bodily location, this fact too is unavailable to reflective common sense and depends upon scientific consideration at least.