Medicine: Grey Matter

Grey Matter Psychosurgery is older than the pyramids, though ancient man didn't call it psychosurgery. When he picked up flint and mallet and cut a hole in his brother's skull, he was often just looking for a way to let the evil spirits out. Modern medical science not only has better tools and a sounder vocabulary, but believes it knows where to look for the trouble, i.e., in the front part of the brain.

In the last 14 years psychosurgeons have performed thousands of operations on the frontal lobes. They still do not agree on...