Time Travel Destination Designation

C

Cedric Grey

Temporal Novice
If time travel is available to use, using either a Kerr black hole or Tipler cylinder through the Lense-Thrring method, then how on earth (Or rather in space) do you choose an end or a start? This is assuming that the Multi-Worlds interpretation is correct, it would be impossibly hard to choose a future. Multi-worlds mean that the future is relative, so that an end destination will be impossible to locate.

And if it isn't, wouldn't that mean that something along the lines of fate/destiny exists as the future can be calculated?

And if you do manage to end up choosing a future destination, does it mean that the observer's effect will doom that future on us? (Assuming you actually travel to A future and not just spawn into some parallel worldline)

 
I mean, it's not like you can just type in the number of minutes into your house microwave and expect to be able to send a message back in time.

Theoratically, the future is indeterminate and so is the past. The only thing that you can verify the existence of is the present, the now. The past is recorded in cells in your head and books in the library, as well as particles floating in their present location and of present momentum. There is no proof that change occurred other than recorded in matter itself.

If an omnipotent being were to rewrite our memories of our past, edit all those books and move a few particles, we would take the present V2 to be completely normal and as expected. Travelling back in time would pose the same multiverse problem, assuming we were not stuck to one worldline.

P.S. I mean by omnipotent being not an actual being changing the world, but rather time itself rewriting history.

 
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