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Because the future has an infinite number of possibilities, therefore many people from the future would be here.
Yet they are not, so that means three things:
1) The world is about to end, therefore there are no humans left to figure out time travel.
2) Time travel is impossible. At least in a backwards way.
3) There are people here from the future, they are just not revealing themselves -->
a) There are no major wars in the future for us to be warned about
b) The future-people are afraid of affecting our world, since their own existance can be terminated if they do the wrong thing (I remember somewhere on the TFP about if someone went back in time and asked an Austrian farmer for directions to a village, the farmer would not have met a woman and would not have had Hitler. Then WWII would not happen, so no baby boomers, so no technical revolution, so a more primitive world would exist, so time travel wouldnt exist at the time of the time travelers departure.. That raises some questions..)
^^^
Does that mean that the time traveler would simply 'not exist' if he tapped that Austrian farmer's shoulder? Or would he still exist, but unable to go forward in time again?
Very confusing. Makes me wonder....why do we even care?
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