Dave Pelz is a scientist who has studied the art of putting. I don't know if reading this book will improve my putting; that has yet to be proven. The text is well written. There are abundant illustrations and the quality of the paper, the binding, the illustrations and photographs are excellent. This is not the kind of book one reads in an evening. There are practical exercises, and one must go to the green and apply what has been read. It is a joy to read, and I have a better understanding of why I am missing those putts. It is my hope with persistence I will improve my game, but lets face it ... the ultimate test is one that involves athletic ability, perception, and the ability to convert intellectual understanding into action.