OK. We will remove the law. That should solve all the problems? right? ...wait! Lack of laws/ regulation & wall street collapse ...have I heard them together in a sentence somewhere?

In case of chess, well an obvious drawback to this approach is during the end game, where the number of possible moves will be limited and choosing the 5th best move out of say 10 possible moves may not be as computationally "smart" as choosing 5th best move among 1000 possible moves!

Lets say that the computer has to make its move and it can make one of a billion moves. I would think that ranking the billion moves and making the nth best move consistently would make the AI smart, but not smart enough to be overwhelming. Also there would be consistency in the intelligence of computer! The value of n, can be chosen according to the difficulty setting of the user.

Its not clear what the people here are debating about ? People who are attacking the models, Are you saying that all the models that exist today are WRONG? Are you talking about some particular model being wrong? People who are defending the models, Are you saying that every model that exists today to predict risks/gains is accurate? From a scientific point of view, It is possible to have models that predict risk/gains to a degree of accuracy which can be well defined. Just because things have gone wrong, it does not mean that models can never be right!! There could be hundred reason, people could have misused the models, some of the models might have been wrong (or not applicable) for certain scenarios.

I think it was a good movie overall. However, I think some of plots were loose. For eg-> Dent threatening to kill Gordon's son. I dont really see why anybody would do that? He did his duty by saving Dent over his Girl friend.