Invisible <voi### [at] devnull> wrote:
> That doesn't *sound* very impressive... until you sit down and try to 
> think of a way to program such a thing yourself. How would you do that??

  Not all roads have the same weight. Some of them are marked as being
more desirable than others. After that it's just a question of running
an algorithm like http://en.wikipedia.org/wiki/Dijkstra's_algorithm

-- 
                                                          - Warp

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