Divergent is definitely a plain, fun book, that doesn't require much thinking to enjoy. The world building is not done very well, but if you don't want to think about how everything happened, and take in a lot of information from the book, this is definitely the book for you. I can't tell you much about the book itself, and how I liked the heroes, because there would be way too many spoilers in it! But I really and truly cannot wait for the next book to come out, (which is May 1, 2012.) I think this series can transform from this beginning to a truly spectacular series!