So, if at one point in the future humanity discovered a new type of wormhole allowing them to travel to whatever time era they wanted, past or future, what could a large scale corporation feasibly take advantage of and use to earn money? (Disregarding money and etc.) This sort of thing could include anything from temporal tourism to prehistoric safaris to to even much less legal things like hiring to try to change the past or future. Thanks for the suggestions!
closed as too broad by Xandar The Zenon, Brythan, Twelfth, Aify, Bookeater May 5 '16 at 6:55
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That depends on what theory of time travel you use to prevent a paradox.
- Time travel can not change history because there is no difference between the past and the future. (Think "Terminator")
In this case, time travel could be used of research and tourism. They would be no worry about people change the past, because they can't.
- Multiple Earth Theory, Part One: Every time you change the past you create a new timeline and original timeline is absorbed into the new one. (think "Back to the Future")
In this scenario time travel is probably illegal, but that won't stop those will to pay the right price. Imagine time traveling assassins or dictator from the future conquering the ancient world. the possibilities are endless.
- Multiple Earth Theory, Part Two: Every time you change the past you create a new timeline and original timeline is not absorbed into the new one.
In this case nothing you do in the past will effect our timeline so the possibilities are endless. Trade modern weapons to the highest bidder in WWI? Why not? I sure there will be plenty of millionaires who will pay a lot of money to go back in time and take over the world. Eventually with every one that can make new timelines you would have your own multiverse (think "Endless Earths" book).
Generally, no. I've seen it advanced as evidence against the existence of time travel, because such inter-time commerce would drive interest rates to zero.