in Edelman's view, very little else is programmed or built in. A baby turtle, on hatching, is ready to go. A human baby is not ready to go; it must create all sorts of perceptual and other categorizations and use them to make sense of the world--to make an individual, personal world of its own, and to find out how to make its way in that world. Experience and experiment are crucially important here--neural Darwinism is essentially experiential selection.