It hardly needs to be stated that I am a generous rater in the first place. I love Dawkins but sometimes his literary skills need to be checked a bit. I feel on occasion that he rushes to publish before fully forming some of his ideas. On the other hand great experiments in this book! The E-coli 20 year extraveganza blew my mind. I would not have likely stubled across this information without having read this book. So for at least that information I have to say I was pleased with the book. I also really liked reading about the guppies. Good information in this one. Starts out slow though.