If you've read the book, the film makes pretty much sense. Then again, if you've read the book and didn't have a professor explain it to you, you probably didn't understand it anyway. I know I didn't until we discussed it in class. I can't imagine what you'd make of it if you'd never read the book though. There's a lot of symbolism that isn't really all that clear from the movie, I don't guess. You'd have no idea who anyone was or how they were related or what they were talking about if you hadn't read the book. I guess that's the thing, this movie won't make any sense if you haven't read the book, but I'm not altogether sure what it would add if you had. An interesting curiosity anyway.