According to our commonsense view of the matter, beliefs, desires, intentions and the like are special kinds of internal states the possession of which by a given cr- ture potentially explains its behavior and otherwise renders the creature intelligible to us. So-called folk psychology provides us with a rough-and-ready network of counterfactuals delimiting the role supposedly played by these internal states v- a-vis perceptual input, inference, and behavioral output in a normal member of our species. The exact empirical details of this network do not matter here, for we are not undertaking...