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Forums - General Discussion - Is time travel possible?

 

Why we have not seen time travellers?

Time travel is impossible 53 49.07%
 
Time travellers are hidden among us 29 26.85%
 
The world ends before it is invented 26 24.07%
 
Total:108
ListerOfSmeg on 24 October 2013
Troll_Whisperer said:
Time travel happens all the time. Time is not set in stone. Because of relativity, objects at different relative speeds experience time differently, that's why GPS satellites don't work with ordinary clocks, they need to be adjusted accordingly.

We can travel to the future by approaching the speed of light, that makes our time go at different rates compare to other objects or beings. Light itself doesn't experience time, the moment something makes a photon and the moment that photon becomes something else (heat) are the same very moment from that photon's perspective.

Travelling back in time is another matter though. Perhaps it's theoretically possible when surpassing the speed of light? But that can't be done so I don't think travelling to the past is possible.


Sorry but no. We can live longer by approaching the speed of light relative to people not travelling the speed of light but that doesnt give us the ability to time travel. 
Time is aman made concept, so nothing besides man experiences it. we just relate it to other objects so no light isnt the only thing that doesnt experience time.



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ListerOfSmeg on 24 October 2013
JoeTheBro said:

It is probably very possible, just pretty confusing if real.

 

If it is possible, it would probably mean the future, past, and present are set in stone. This means you can't time travel to the future, see our future mistakes, and come back to the present to warn us. Also means you can't go back in time and change things. Or not. Our understanding of time is pretty loose.



Sorry but that doesnt make any sense at all. If we can time travel then everything is already set in stone? What low budget sci fi film did you get that from? Existance may be set in stone but actions taken in that existance may be completely up to chance and able to be changed.



Nem on 24 October 2013

Like dark templar said. Time travel forwards is possible by getting near a black hole. Backwards isnt possible as it would create paradoxes. Though i believe the math says its possible.



IsawYoshi on 24 October 2013

Not sure if it is possible or not, but if it is it would fuck up everything.



JoeTheBro on 24 October 2013

It's not possible.



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A_C_E on 24 October 2013

There is no such thing as time, its just a word made up by human beings. I guess people just want time travel to exist but without an actual component there is no rule, and everything in existence is governed by rule, meaning time travel does not exist because it has no rule. All space is governed by rule and you can't change that. You cannot make 2+2 = 6. You cannot make the frame of existence move backwards or speed it up.

Time is not a physical being, you can't see it under a microscope, you can't affect it, you can't do anything with it because it is just a WORD. It does not exist even on molecular or atomic measures. The only way to manipulate something is to grasp it. How can you grasp something that doesn't exist?



Galaki on 24 October 2013

It sure does.
I just went to the future and back.
I can confirm that 3DS still outsell PSV by a large margin.
Also, PS4 didn't sell 10 millions as some people predicted.



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Porcupine_I on 24 October 2013

See?



“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday, he reflected, it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it.”

- George Orwell, ‘1984’

Porcupine_I on 24 October 2013

I can also travel into the past



“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday, he reflected, it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it.”

- George Orwell, ‘1984’

Podings on 24 October 2013

Scientists in general wouldn't have got anything wrong, if time travelling is impossible.

The vast majority of scientists consider time travel impossible.

Hawking's Chronology Protection Conjecture (amon many other works) covers it.

What is once observed as having happened will have to be undone in order to rewind or "travel" in time, or would be altered if preceding events were.
There's no reason to believe this kind of violation of basic causality could ever occur.