Chimpanzee behaviour with mirrors makes it plausible that they can recognise themselves as themselves in mirrors, and so have a 'self-concept'. I defend this claim, and argue that roughly similar behaviour in pigeons, as reported, does not in fact make it equally plausible that they also have this mental capacity. But for all that it is genuine, chimpanzee self-consciousness may differ significantly from ours. I describe one possibility I believe consistent with the data, even if not very plausible: that the (...) chimpanzee is aware of itself only as a material being, and not as a subject of any psychological states. As I try to make clear, this possibility exists even if the chimpanzee has psychological states, and is aware of some of them. (shrink)

Somatic cell gene therapy has yielded promising results. If germ cell gene therapy can be developed, the promise is even greater: hundreds of genetic diseases might be virtually eliminated. But some claim the procedure is morally unacceptable. We thoroughly and sympathetically examine several possible reasons for this claim but find them inadequate. There is no moral reason, then, not to develop and employ germ-line gene therapy. Taking the offensive, we argue next that medicine has a prima facie moral obligation to (...) do so. (shrink)

Sydney Shoemaker has claimed that functionalism, a theory about mental states, implies a certain theory about the identity over time of persons, the entities that have mental states. He also claims that persons can survive a "Brain-State-Transfer" procedure. My examination of these claims includes description and analysis of imaginary cases, but-notably-not appeals to our "intuitions" concerning them. It turns out that Shoemaker's basic insight is correct: there is a connection between the two theories. Specifically, functionalism implies that "non-branching functional continuity" (...) is sufficient for personal identity. But there is no implication that it is necessary. And the "BST" procedure may not preserve functional continuity. I consider several possibilities. On what may be the most attractive, the survivor of this-or any similar-procedure is not identical with the original person, but related to him or her as are the survivors in a case of fission. (shrink)

One might expect functionalism to imply that personal identity is preserved through various operations on the brain, including transplantation. I argue that this is not clearly so even where the whole brain is transplanted. It is definitely not so in cases where only the cerebrum is transplanted, a conceivable kind of hemispherectomy, and even certain cases in which the brain is "gradually" replaced by an inorganic substitute. These results distinguish functionalism from other accounts taking what Eric T. Olson calls the (...) "Psychological Approach" to personal identity, enabling it to avoid some of his objections to them. (shrink)

What distinguishes actions of persons from other events? Too big a question; we make a customary substitution: what distinguishes a person's raising his arm from a person's arm rising? In each case, the arm rises. But in the former, we have something in addition. Let us say that in the former case, the person causes the arm's rising. Our problem then is to interpret this notion of causation by an agent.It can be done, I believe, in terms of the notion (...) of causation of events by other events-events which may not be “mental,” contrary to one common view. My account of agent causation is presented in the concluding section of this paper. I set the stage for this account by first examining rivals of three types: one asserting that agent causation is or involves a causal concept which cannot be interpreted further, but which we all understand well enough; one which invokes causation by mental events of certain kinds; and one which avoids all reference to causation. (shrink)

In contrast to what merely happens to us, or to parts of us, actions are what we do. My moving my finger is an action, to be distinguished from the mere motion of that finger. My snoring likewise is not something I ‘do’ in the intended sense, though in another, broader sense, it is something I often ‘do’ while asleep.