• Time Travel, Possibility or Fiction?
    337 replies, posted
[QUOTE=Kartoffel;32723546]In my honest opinion, everything is possible until it is proven impossible. Time travel has not been proven to be impossible, so therefore, it must be possible. We just haven't figured out how yet.[/QUOTE] That's backwards thinking. Do you also believe in ghosts and unicorns and other things that haven't been disproved?
[QUOTE=LegndNikko;32724227]As far as we understand how things work, going back in time is just flat out impossible.[/QUOTE] No, no, no. [url]http://en.wikipedia.org/wiki/Closed_timelike_curve[/url]
my favourite movie is back to the future, so that's my opinion on this. I want a time travelling delorean.
If time travel is possible, where are all the time travellers?
[QUOTE=Jabberwocky;32724802]If time travel is possible, where are all the time travellers?[/QUOTE] exactly. if you would travel back in time to say, go see your past self, you should've already seen your future self.
Time travel, into the future is possible (and has happened). if you had an identical twin, who was the exact same age as you, and you went into orbit around the earth for a couple of years, due to the speed you travel at in orbit, he would be older than you when you got back. I can't really explain it better than that :/ other than this has happened to an astronaut, who was in orbit for a long time, and because of that, "travelled" a few seconds into the future.
[QUOTE=BigOwl;32721238]Replace the word time travel with television back in the 1900's and you'd get the same replies.[/QUOTE] But it's not 1900 anymore and it's not television it's time travel
On one hand, ever-advancing technology would suggest that we will come close to discovering it. However, the fact that no-one has yet "come back" from the future using a time machine they have invented suggests that it will not happen.
Traveling forward in time is actually quite easy and not impossible by any means. Just go very fast and relativity takes care of the rest. Traveling backwards in time is trickier, but there are many suggested ways to how this would be accomplishable. For example through a wormhole which not only is connected by to points in space, but also by two points in time. To be able to pass and also [I]return[/I], you'd need a transversable wormhole, which would require negative energy. This the most promising design for an actual time machine. Sadly it requires so much energy (like that of an entire galaxy) that we aren't even close to be able to construct one. This kind of time machine would also only work back to the point in time when it was built. This would solve the problem of time travelers not visiting us all the time. Stephen Hawking said "time travel may be possible, but it's not practical".
[QUOTE=Rad McCool;32726029]This kind of time machine would also only work back to the point in time when it was built. This would solve the problem of time travelers not visiting us all the time.[/QUOTE] You're talking about making a bigger one? You're talking about making a bigger one. Anyway, I see time travel as like 3D television: The novelty would wear off.
[QUOTE=Wnd;32725795]But it's not 1900 anymore and it's not television it's time travel[/QUOTE] I think you're missing his point. Like, entirely.
Just because X can, doesn't mean it does. It's a possibility, not proof.
We can already timetravel, the thing is, we can't go that far. We can only go about 0.000001 seconds ahead in time.
[QUOTE=Captain Chalky;32726140]Can you scientifically prove that it is [B]possible[/B]? No. Therefore, the possibility of the possibility that time travel can't exist, is there.[/QUOTE] ..What? Our known scientific laws and principles allow for the possibility of time travel, therefore, time travel is possible.
We could find out who messes up the future and shoot them now. But seriously, I think they have to create reference point first, you can't just go back to any time you want like 1955. Are there any physicists that help here?
[QUOTE=Jookia;32724344]That's backwards thinking. Do you also believe in ghosts and [b]unicorns[/b] and other things that haven't been disproved?[/QUOTE] Narwhals. As for ghosts, no.
[QUOTE=Captain Chalky;32726140]Can you scientifically prove that it is [B]possible[/B]? No. Therefore, the possibility of the possibility that time travel can't exist, is there.[/QUOTE] Can't as of right this second, but it's the same principle of flight. People thought it impossible, but now we have planes.
[QUOTE=Ian;32737452]Can't as of right this second, but it's the same principle of flight. People thought it impossible, but now we have planes.[/QUOTE] You do know birds fly right
[QUOTE=BigOwl;32721238]Replace the word time travel with television back in the 1900's and you'd get the same replies.[/QUOTE] What paradoxes would occur from Television? With time travel, you could cause things to happen that you know would happen because you went back in time to cause them. Like, let's say when I was little, I was given a book by a stranger, and I used the information in the book to better my life immensely. Later on, I get a time machine, so I take the book back in time and give it to the younger version of me. Where does the book come from? Not only that, but what about going back in time to say, stop Hitler? It's doomed to fail since Hitler did what he did. If you succeed, then Hitler would have always been stopped by a time traveler, and you would have no need to go back in time to stop him, because someone did it for you, meaning you would not go back in time to stop Hitler, meaning Hitler never got stopped, and so on and so forth.
[QUOTE=GamerKiwi;32743350]What paradoxes would occur from Television? With time travel, you could cause things to happen that you know would happen because you went back in time to cause them. Like, let's say when I was little, I was given a book by a stranger, and I used the information in the book to better my life immensely. Later on, I get a time machine, so I take the book back in time and give it to the younger version of me. Where does the book come from? Not only that, but what about going back in time to say, stop Hitler? It's doomed to fail since Hitler did what he did. If you succeed, then Hitler would have always been stopped by a time traveler, and you would have no need to go back in time to stop him, because someone did it for you, meaning you would not go back in time to stop Hitler, meaning Hitler never got stopped, and so on and so forth.[/QUOTE] That's why you shouldn't give something that can travel time to an idiot. Besides, it's amazingly easy to go fowards in time/accelerate the passage of time, I can think of many ways. Traveling backwards would obviously be much, MUCH harder.
Backwards, no. Forwards... plausible. I personally believe in the theory of Cyclical time. That is: When this universe dies another one which is exactly the same takes it's place, with all the same happenings and events. The theory sounds ridiculous but, hey, it clears up time travel paradoxes if you only travel forwards.
Isn't it possible to go back in time by going faster than the speed of light? (Which seems to be easier said than done.)
Yes, although as far as we know that's impossible for massive particles (barring the neutrino incident which has not been thoroughly analyzed yet) but using general relativity it's also possible without even having to go the speed of light.
I think it'd be possible to travel forward in time. But to me, backwards time travel is incomprehensible and I therefore don't think it's possible.
Stephen Hawking performed an experiment to "prove" his time travel paradox (if backwards time travel is possible, why are there no time travelers that have come back) by holding a time traveler party at his house, then advertising it in the newspaper the following day. No-one came.
Stephen Hawking theorized, that if you were in a train, which went in a big circle, one meter/per second away from the speed of light, and if you started running up and down the train for two weeks, a year or so would pass for everyone else, but not you. As well as this, he said that time travel backwards is impossible, because nobody from the future has ever came back to our times, and some other reasons as well.
[QUOTE=Hellborg 65;32761335]Stephen Hawking theorized, that if you were in a train, which went in a big circle, one meter/per second away from the speed of light, and if you started running up and down the train for two weeks, a year or so would pass for everyone else, but not you.[/QUOTE] Somehow I think you're remembering this wrong because A) Einstein theorized that, B) you don't need to run up and down the train. You can just sit there, and C) If you were on a train going 1 m/s slower than the speed of light relative to some observer for two weeks, over 400 years would actually pass outside the train.
Time travel is possible. We are travelling through time right now. *EDIT* I dont quite understand the whole train thing. If you put someone on a train and sent it at light speed, you would have to put them on it for 400 years, then they would feel like two weeks had passed? So if you were to put them on the train, set it off, then stopped it in 2-3 days, it would feel to them like they just got on it, then it would stop seconds later?
I believe backwards time travel is impossible because if people in the future really use it, wouldn't it mean that they would live in the here and now? And if someone confesses that he/she is a "future person" wouldn't it cause panic and pretty much jeopardize all, formerly secret, efforts? I also doubt the technology would be developed enough to prevent the user from aging backwards and maybe die of ..."young age"?
I don't think something in the universe constantly saves "states" of the entire universe so that we can access "the past" by travelling to it. Where/how would these states be saved anyways?
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