Amazon book reviews and the average reader

I do find it amazing how many book reviews on Amazon claim that the book isn't for the average reader. To quote from my recent comment on this: 

I do wonder who this "average" reader is that anyone posting on these feedbacks seems to consider themselves to be above.

My guess, and it is no more than that (I have no reliable information on "average" reading abilities in USA or UK) is that the vast majority of basically educated people in the developed world with some secular religious education who use a kindle are probably perfectly capable of reading and understanding this book, it is not after all an academic tomb, especially with wikipedia and the like but a click or two away to fill in some background.

Advertisement