Life is supposed to be making the right choices at the right time. But what makes a choice right or for that matter what makes the time right? How one can know that the choices not made at any point of time were not better than the option taken . Its a nXn travelling salesman problem where n is infinity and only one path's weightage is known after that path is exercised- not the best form of optimization problem.Why try to solve such a problem then- much easier to leave it to the celestial bodies a few light years away- is it any different in the earthlike planet they found yesterday- do they have negative time there?