Physics Time Travel - Will it ever be possible?

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Andre

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My son has an interesting theory
( not sure where he got it from some bizarre tic -tic or whatever thing he stares at incessantly , he claims it's his own )

Anyway goes like this :
More along the lines of teleportation than time travel ( same thing I guess ) but is focussed on copying the consciousness ( soul) and implanting that into a new physical body in a different time
It sounds feasible given how far technology has come in mapping /copying the brain but copying and then resurrecting the soul is hard to get your head around
Like the articles in the links below

Good luck young people !
Let me know when you've nailed it so I can go back and make the Dockers not So sh*t 🤣
Sounds like him (or whoever he saw it off) is posting the plot of Travelers.
 

Toump Ass

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Maybe we can't travel back in time, but it would be nice if we could watch history on TV or something. Like a livestream right into Hitler's bunker, so we can see for sure if he shot himself or he got snuck outta there and moved to Argentina.
 

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SaintsSeptember

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If you were able to somehow transport a telescope to a position many light years from earth, then use quantum theory based communication to instantaneously communicate the results back here, we would be rewarded with a view of earth in the past.

Unfortunately we'd be looking from so far away we wouldn't see much.

Certainly not into Hitlers bunker.
 

HairyO

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That's the thing, isn't it? How do we know it hasn't happened at some point in the future? (A contradiction in the past/future tenses, but I couldn't think of a better way to put it).

How do we know that in the year 2849 for instance, time travel was finally perfected (there I go again) and people from that time onwards have been travelling into the past, on the basis that (a) they blend in with the locals so they aren't identified and (b) they don't interfere with events of the time?
Because millions of people would have been at the birth of Jesus and someone would have killed Hitler as a baby.
 

HairyO

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Yeah going forwards is kind of possible in theory.

I thought going backwards violates the laws of thermodynamics / entropy?
Time travel also requires travelling through space. The Earth 2,000 years ago was in a very different place. Imagine having to allow for rotation and orbit to the centimetre over such a length of time. You could end up encased in the the Earth's crust, 18 km in the air, or miss the entire planet by 2 million km.
 

HairyO

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Yep.

The only way it would make sense is of there are like infinite parallel dimensions or some crazy sh*t like that
Or you can only go forwards. Which is sort of like Einstein's theory of approaching the speed of light where relative to you the rest of the universe everything else moves forward.
 

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