An interesting look at the movie industry and a good explanation about the changing nature of the quality of films. It is not simply because of an attempt to provide what the audience ask for but more the nature of the industry in which the only people who actually read scripts are the lowest level employees tasked with reducing the script to three sentences. Plus, they tend to try to find scripts similar to ones tried before.
My enjoyment of the book is somewhat lowered by Mamet's need to use 'big' words, need to inject national politics into the book, and mention of films not seen by me. Fair enough, and it does lead me to some films I might like.