A lot of first-rate physicists praise string theory and I've read that it has quite a lot of promise. However Susskind concedes that "string theory has no shortage of critics who will tell you that it is a monstrous perversion." So I'd like to read some of these critics. The only ones that I know of who have written non-technical books are Woit and Smolin. Amanda Peet, paraphrasing, describes Lee Smolin as incapable of understanding. How reliable are these authors? I want to know before I start reading them.