To me, where Iwo Jima is the film of an older, less progressive Hollywood, Babel is the future. It defines its own structure. It plays with time and story and relationships. In the end, you feel like you figured something out, you unlocked a truth. That is one of the most important things a film can do. Make you read the text and meet the author halfway, find his message on your own, opposed to just watching the Powerpoint.