Well I wrote this book so my five-star rating should get a severe disinterestedness deduction. I enjoyed writing the text, which for a brief time at least gave me an overview of work in my field of behavior analysis. The experience left me with the feeling that many people in my field were doing excellent work, improving the education and training of so many from the severely disabled to advanced graduate students. Behavior analysis continues to be an active area of research and theory and one of the most promising initiatives in the history of science. We behavior analysts live in interesting times.