I need some time to digest this book. Did I like it? Yes. But Charlie was simplistic and childlike, and I can't decide if he is autistic, or if the author was really so out of touch with the mind of a freshman in high school. He was written like he was 10, not 15, and the comments from everyone about his brilliance did not come through in his letters to his friend. But the book has stayed with me, so I am giving it three stars.