Neuroethics

Chemists can tell us how molecules interact and change according to general principles rooted in physics. No surprise there—the relation be- tween chemistry and physics is a textbook example of intertheoretic re- duction in the philosophy of science. Beginning in the mid-twentieth century, biologists began to explain the functions of cells in terms of the molecules that make them up. This has been worked out in detail for many cellular functions and in gist for the rest. Even those special cells called neurons, with their special tricks of signaling and changing con- nections to one another,…