This is the person who single handedly destroyed primate language research in the U.S. by writing a debunking book that caused all the funding to evaporate overnight. Unfortunately, the book is brick stupid. Terrace describes situation after situation in which he somehow tests the chimpanzee he calls Nim and finds him inadequate, but as you read these anecdotes you're struck by how pigheaded the author is, and how his own shallowness, rigidity, and lack of moral imagination cause him to misinterpret what's happening. This guy is deaf to ethology. Roger Fouts and Jane Goodall are the people to read on the subject of chimpanzees and their world, who they are, what they can do and so on. Not this guy.