As for the movie and book I thought they were both great. I would just like to add my own personal insight on the portion a out the sumo "cheaters.". I don't think they are cheaters at all. I think their behavior falls into a different category called self preservation. Just like any NFL team that has already sealed a playoff spot facing a team trying to make the post season. The better playoff team is not going to try as hard. i.e. not play all their starters or not play as aggressive. That team is not throwing the game in hopes of getting the favor returned. They are just just avoiding injury and resting up for a more important match. I imagine in japan as in America it's not a big secret that teams or wrestlers in these situations are expected to perform sub-par and the statistics showing this pattern would be accepted as normal.
Review of Freakonomics
