Douglas C. Long

Half of Dilman's book deal with skepticism about the physical world and the other half with skepticism about other minds. His main thesis in each case is that the very general doubts that have traditionally troubled philosophers must not be answered on their own terms but by showing that they are confused. Exposing this confusion helps us to understand better the "logic" of our ordinary talk about things and persons. He draws illuminating parallels between problems about knowledge of the external world and about knowledge of other minds. His principal contribution lies in organizing arguments urged by Wittgenstein, Wisdom, and Malcolm.

Over three decades ago, in a brief but provocative essay, Paul Ziff argued for the thesis that robots cannot have feelings because they are "mechanisms, not organisms, not living creatures. There could be a broken-down robot but not a dead one. Only living creatures can literally have feelings."[i] Since machines are not living things they cannot have feelings. In the first half of my paper I review Ziff's arguments against the idea that robots could be conscious, especially his appeal to our linguistic usage. In the second half of the essay I try to provide a deeper ontological understanding of why we ought not attribute minds to nonliving artifacts. I argue that inanimate mechanisms are incapable of genuinely active and purposive behavior. They are importantly different in kind from living human beings and animals.