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Time Travel Possible. Possibly...

To go forwards in time, you go NAFAL. To go back on a macro scale, you probably need two cosmic strings with a history or passing near each other.
 
Where are we going to get cosmic strings in this neighborhood? All the cosmic string stores are closed because of excessive government regulation.
 
So it turns out the large hadron collider was actually just a 'time tunnel'- a very long tunnel with instructions to future scientists to use as an exit-point for any future time machines they might make. The only thing that came out of it was a scrawled hand-written note saying: "Pls destroy this tunnel ASAP please and thank you."
 
If human time travel actually were possible I would think it'd be a 'What happened is what always did happen' sort of thing.

Like if somebody tried to travel back in time what we'd see manifest is a sort of 'Equilibrium timeline' where perhaps some unstable timelines happened but the only one it's possible to experience is the stable, self-causing one.

Of course it could also be that time travel is possible but no timeline where it is ever invented could be stable, therefore it will never be invented.

At least I find that explanation more likely than the 'You are actually going back into an identical parallel universe' explanation.

Anyway until I hear a real scientist saying explicitly without the filter of the media "Yes time travel is possible and I've done it", I will not believe any article claiming it to be.
 
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Any time travel will also need space travel. Zap out of one time frame and into the other, and you have to go looking for the Earth.
 
I think "zapping between time frames" isn't a well-defined expression, so one can't meaningfully evaluate its realism. Want to provide a definition, publiusr?
 
If human time travel actually were possible I would think it'd be a 'What happened is what always did happen' sort of thing.

Like if somebody tried to travel back in time what we'd see manifest is a sort of 'Equilibrium timeline' where perhaps some unstable timelines happened but the only one it's possible to experience is the stable, self-causing one.

Of course it could also be that time travel is possible but no timeline where it is ever invented could be stable, therefore it will never be invented.

At least I find that explanation more likely than the 'You are actually going back into an identical parallel universe' explanation.

Anyway until I hear a real scientist saying explicitly without the filter of the media "Yes time travel is possible and I've done it", I will not believe any article claiming it to be.
It's more likely, IMO, that the man who invents a time machine runs into a situation where everything he could possibly do with that machine is already part of his own past. He cannot change history no matter how much he wants to, because that history is part of his own existence; he CAN, however, become a part of that history in some way or another, and could potentially find clues to what he's supposed to do with that machine just by reading history and seeing "Ah, so that's how I get involved. Okay then..."

It's a bit deterministic in a way, since the traveler doesn't really have free will to act: anything he does is bound to lead to a certain outcome anyway, so even if he went crazy and deliberately did the exact opposite of what he thought he should do it would wind up causing those events precisely the way history recalled them happening.

kill_hitler.png
 
I think "zapping between time frames" isn't a well-defined expression, so one can't meaningfully evaluate its realism. Want to provide a definition, publiusr?


Just a turn of a phrase. My point was the only way I know of to travel back in time (zap) would be to pass by the cosmic strings--now if one could somehow appearblink (maybe a better use of the term zap), you will still need a spaceship.

At any rate, it won't be done with a Police Box, Phone booth or Delorean.

Heck, the movie Interstellar show the best approach to either FTL or Time Travel.

Travel to some powerful object and let it do the work.
 
Any time travel will also need space travel.
Why? We can move forward in time without relative motion in space, why would reverse time travel be any different?


the only way I know of to travel back in time (zap) would be to pass by the cosmic strings
My theory is that you have no idea how to travel backward in time.

But maybe we do travel backwards in time now and then and just don't know it. Maybe we un-remember more things the further back we travel and are just unaware that we've already seen and experienced the future.

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