The writer of this movie seems like a genius. The plot is unpredictable and the story has a steady state, what I mean is that I didn't lose interest in the middle of the movie. I've watched this many times and I still love it, it's fun! maybe for some people this movie is hard to understand but hey come on don't you guys see WHAT GENRE IS THIS??? if your brain can't get enough to catch it then don't watch it and try to watch another relaxed genre movie. I just suggest you watch movies like this or games or mysteries often because it can train your brain too! actually I think this movie is easy to digest, I like movies that need more brain thinking like this, it's great!