So I dont know why I woke up thinking about this, maybe because of the Twlight mania invading my personal space, or because I watched the trailer to The Lovely Bones yesterday. But I've noticed most screenplays from novels are written by someone other than the author of the book. I always plan to take my novel when its finished and make my next task writing the screenplay of it, for my own entertainment of course. But most movies adapted from books can arguably be described as far less enjoyable than thier counterpart. I wonder if this is because someone other than the original author is at work. Why is it the writers of the books arent the ones writing the movie script? Am I just over ambitious or is there something I dont know?