Another possibility is that after n years the algorithm smoothes out the probability of all the possible futures so that they are equally likely... The problem is not only computational: unless there are some strong pruning heuristics, the value of predicting the far future decays rapidly, since the probability mass (which is conserved) becomes diluted between more and more branches.
Another possibility is that after n years the algorithm smoothes out the probability of all the possible futures so that they are equally likely...
The problem is not only computational: unless there are some strong pruning heuristics, the value of predicting the far future decays rapidly, since the probability mass (which is conserved) becomes diluted between more and more branches.
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