>When we do a book, there is no position called "Peer Reviewer". The only title it Technical Editor. Therefore, that person has to wear both hats...

Yes, I think we are in agreement. I'm reminded of when Steven Black is giving his design sessions and he says: when you are doing design, be clear that you are NOT coding. You have to have your design hat on. (I'm paraphrasing, and probably not very well.)