Illusions and identity
A ‘phosphene’ is an illusion of a flash of light, which you get when an electric current is passed through your brain in a certain way. I shall assume that for every particular phosphene anyone has, there is such a thing as the (one and only) physiologically describable event with which the phosphene could be identified if it could be identified with any such event. For if you could equally well identify something with this or that thing, then you could by no means identify it with either.2
Unable to display preview. Download preview PDF.