Descartes said of the blind: they feel things with such perfect exactness one might almost say that they see with their hands if a blind woman were making love with a man born blind who'd had his sight restored, their foreplay might take the form of answering John Locke's famous question: Suppose a blind man was able by touch alone to distinguish between a cube and a sphere; if then he were made able to see, would he be able to tell only by looking, without touching, which one was the cube and which one was the sphere? suppose that you and I had been deaf dumb and blind and had all our lives known ourselves and each other only by touch: if while making love we were suddenly made able to see and immediately looked into a mirror, would we be able to tell which one of us was which? next