If time travel is real

[LucidFlanders]

If someone goes back in time and changes events, and changes everything in the world, what happens to us? do we continue down our own path, or are we erased, and it's like a clone so to speak that takes over us? would we just fade away? just like the universe in the NOW? perhaps in an instant our memories get filled with new thoughts and old ones prior to that event erased...or if back before we are born we fade and nolonger exist, or have a different family? or something? of course if that's true maybe the timeline has already been altered, but we just will never know because memory is erased and filled in with a fake memory that we remember. fake as in we never expierienced it as we are from the future and done our events.

[kingofclutch]

Time travel isn't possible, even millions of years ahead in time. Otherwise there would be accounts of people from the future coming back in time to our time or times before ours.

[LucidFlanders]

There have been, but they go become a mental institution person. Seriously though, will you believe a person if they told you they are from the future? You can't rely on what they say because future events havn't took place yet for us, unlike that person. Then again, if you go back in time, you left what you know behind and went to before you knew time...so maybe you wont know anything??

[ExoByte]

kingofclutch, No. That is an extremely narrow minded view on the concept of time travel. Perhaps it does exist, but when traveling back in time you would not travel on the same line. It would not be possible as it would create an ultimate paradox. For example, if you were to travel back in time, kill your grandfather. You wouldn't be born, and thus couldn't go back in time and kill your grandfather. So he'd live, and you would be born etc. etc. If however you were to travel back in time to say a parallel line, you'd be able to alter that timeline's course of events. This however is pseudo-science and is merely being used to prove a point. There are technical details in which people have theorized about the possibilities of time travel. We however know too little of the concept of time to make any assumptions on the possibility of time travel. We already know that time can be "bent," via intense speeds (time moves slower around an object the faster it moves) and other powers that be such as extreme gravity (as is the case of black holes), so the idea of going backwards in time is not very farfetched.

[LucidFlanders]

Also, to go back in time could possibly be only 1 way. You may be able to rewind time because it's already happened, but now you're back in time, and there is no future events that time can travel to, right? you are in the NOW, not the future, so you are stuck in the NOW and traveling ahead when there is no ahead might be harder, although there could possibly be a way to do it somehow.

[kingofclutch]

kingofclutch, No. That is an extremely narrow minded view on the concept of time travel. Perhaps it does exist, but when traveling back in time you would not travel on the same line. It would not be possible as it would create an ultimate paradox. For example, if you were to travel back in time, kill your grandfather. You wouldn't be born, and thus couldn't go back in time and kill your grandfather. So he'd live, and you would be born etc. etc. If however you were to travel back in time to say a parallel line, you'd be able to alter that timeline's course of events. This however is pseudo-science and is merely being used to prove a point. There are technical details in which people have theorized about the possibilities of time travel. We however know too little of the concept of time to make any assumptions on the possibility of time travel. We already know that time can be "bent," via intense speeds (time moves slower around an object the faster it moves) and other powers that be such as extreme gravity (as is the case of black holes), so the idea of going backwards in time is not very farfetched. Yes, but time 'bending' is completely different than time traveling and yes time traveling IS very farfetched.

[ExoByte]

That post clearly went right over your head. Just for the sake of humour, scientifically explain to me why time travel is farfetched.

[Casualtie]

Maybe no one has come back in time yet because WE are the first point on the timeline. The future hasn't technically happened yet. This probably sounds retarded, but it makes sense to me.

[kingofclutch]

That post clearly went right over your head. Just for the sake of humour, scientifically explain to me why time travel is farfetched. In physics, time is described as a dimension much like length, width, and height. When you travel from your house to the grocery store, you’re traveling through a direction in space, making headway in all the spatial dimensions—length, width and height. But you’re also traveling forward in time, the fourth dimension. Space and time are tangled together in a sort of a four-dimensional fabric called space-time. When something that has mass—you and I, an object, a planet, or any star—sits in that piece of four-dimensional spandex, it causes it to create a dimple. That dimple is a manifestation of space-time bending to accommodate this mass. The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity. Mathematically one can go backwards or forwards in the three spatial dimensions. But time doesn’t share this multi-directional freedom. In this four-dimensional space-time, you’re only able to move forward in time. Just for the sake of humor, or how you spell it, humour, explain to me why time travel isn't farfetched.

[LucidFlanders]

Maybe no one has come back in time yet because WE are the first point on the timeline. The future hasn't technically happened yet. This probably sounds retarded, but it makes sense to me. If we went back in time, they would think the same thing. That's why i don't believe that.

[Lord Bennington]

There's a theory that you can only travel back in time to the point where your time machine was invented. If you went farther back, the time machine would stop existing and you couldn't travel farther. Same with travelling before you were born.

[Replicon]

If anything is possible, it's probably more the "time travel forwards" variety. If you go fast enough, your time slows down, and to you, it feels like time travel. It also feels that way to the rest of the world, except they'll never see you again (except in the future if they're still around). Going BACK in time is a whole different ballgame.

[ExoByte]

In physics, time is described as a dimension much like length, width, and height. When you travel from your house to the grocery store, you’re traveling through a direction in space, making headway in all the spatial dimensions—length, width and height. But you’re also traveling forward in time, the fourth dimension. Space and time are tangled together in a sort of a four-dimensional fabric called space-time. When something that has mass—you and I, an object, a planet, or any star—sits in that piece of four-dimensional spandex, it causes it to create a dimple. That dimple is a manifestation of space-time bending to accommodate this mass. The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity. Mathematically one can go backwards or forwards in the three spatial dimensions. But time doesn’t share this multi-directional freedom. In this four-dimensional space-time, you’re only able to move forward in time. Just for the sake of humor, or how you spell it, humour, explain to me why time travel isn't farfetched. Wormholes are one idea. The space time continuum can be bent. The idea is that if our universe is like a flat plane(take a piece of paper for example) as Einstein theorized, a wormhole would be a "bridge" from one point of the Universe to another by folding it over itself. This would therefore not only allow an object to instantly get from one point of the universe to another, but possibly travel forward or back in time. However, it is also theoretically possible to go back in time via going faster than the Speed of light. Its said, once again by Einstein, that the closer you get to the speed of light the slower time goes around you. Which we so far know as true, which is why "time travel" to the "future" is possible and is done simple by moving very fast. The idea is, if you surpassed the speed of light, you'd go back in time rather than forward. Take for example Black Holes. Black Holes as we know have gravity so powerful that light cannot escape, this is because the light cannot move fast enough to escape the gravitational pull of the black hole. Faster than light travel kind of technology is currently beyond our level of understanding, but it is again theoretically possible in the future.

[kingofclutch]

Wormholes are one idea. The space time continuum can be bent. The idea is that if our universe is like a flat plane(take a piece of paper for example) as Einstein theorized, a wormhole would be a "bridge" from one point of the Universe to another by folding it over itself. This would therefore not only allow an object to instantly get from one point of the universe to another, but possibly travel forward or back in time. However, it is also theoretically possible to go back in time via going faster than the Speed of light. Its said, once again by Einstein, that the closer you get to the speed of light the slower time goes around you. Which we so far know as true, which is why "time travel" to the "future" is possible and is done simple by moving very fast. The idea is, if you surpassed the speed of light, you'd go back in time rather than forward. Take for example Black Holes. Black Holes as we know have gravity so powerful that light cannot escape, this is because the light cannot move fast enough to escape the gravitational pull of the black hole. Faster than light travel kind of technology is currently beyond our level of understanding, but it is again theoretically possible in the future. That is only a theory, and not close to ever happening and making time slower isn't time traveling, it's going through time slower.

[ExoByte]

That is only a theory... Space-Time is still only a theory as well. There is actually reason to believe we're not limited to 4-dimensions either. ...and not close to ever happening... Lmfao Are you serious? The whole point of this discussion was if time travel was possible. Not whether we could do it soon or not. Doesn't even matter, who cares if we're not even close to traveling faster than light? If we learn to in the far future, and it turns out we can travel back in time, it makes no difference. It not happening within our life time doesn't make it any less possible.

[thegnome54]

Until we at least have a vague idea of exactly what time IS, no one's opinion is particularly valid.

[LucidFlanders]

What would happen to us though? alter past events and change the future. Mind erased, and filled with new memories?

[R.D.735]

One interpretation of quantum electrodynamics is that empty space is full of tiny wormholes through which particles from the future come and go, and manifest themselves in the present as 'virtual particles.' Even if it isn't a wormhole phenomenon, particles popping into and out of existence in a vacuum is probably stranger than time-travel, and it's a proven phenomenon. If time travel is possible, I doubt the universe has any mechanism to 'fix' all of the paradoxes. If it did, such a mechanism would probably have to act retroactively in time, likely creating its own time paradoxes, which would create more paradoxes, and so on. The multiple-timeline theory is a better alternative.

[Venomblood]

I don't think it's possible because of all the paradoxes that come with it. Take the Grandfather paradox. The only way that could work is for an alternate universe to be made.

[Xaqaria]

In physics, time is described as a dimension much like length, width, and height. When you travel from your house to the grocery store, you’re traveling through a direction in space, making headway in all the spatial dimensions—length, width and height. But you’re also traveling forward in time, the fourth dimension. Space and time are tangled together in a sort of a four-dimensional fabric called space-time. When something that has mass—you and I, an object, a planet, or any star—sits in that piece of four-dimensional spandex, it causes it to create a dimple. That dimple is a manifestation of space-time bending to accommodate this mass. The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity. Mathematically one can go backwards or forwards in the three spatial dimensions. But time doesn’t share this multi-directional freedom. In this four-dimensional space-time, you’re only able to move forward in time. Just for the sake of humor, or how you spell it, humour, explain to me why time travel isn't farfetched. None of that actually explained why time travel was far fetched. You basically outlined an extremely basic version of relativistic gravitation and then re-asserted that its only possible to move forward in time; something that relativity does not support. Until we at least have a vague idea of exactly what time IS, no one's opinion is particularly valid. We do have a pretty good idea of what time is. All of the experiments that have been conducted to test the theory of relativity have shown that time is effected in the same way as space by acceleration and gravity. This would suggest that time is at the very least extremely similar to space.

[Scatterbrain]

If time travel is possible, I doubt the universe has any mechanism to 'fix' all of the paradoxes. If it did, such a mechanism would probably have to act retroactively in time, likely creating its own time paradoxes, which would create more paradoxes, and so on. The multiple-timeline theory is a better alternative. If time is 2-dimensional and time travelling on the second dimension is impossible then no paradoxes would occur from travelling in the first.

[Sornaensis]

Time Travel cannot exist, because time is not something you can move across.

[TimeStopper]

Well if time is somehow circular (i.e. everything will happen over and over again) then all you need to do is wait for a very long time and voila, you're in the past. But that would also cause problems, such as meeting yourself.

[lagunagirl]

there is no time, there is only change. time is a way of sort of illustrating how things are. there's really no such thing as "the future", because it hasn't happened yet. there's the idea of the future, but all there really is is the present, and now. but now can change. All there ever is, all we ever experience is NOW. As far as the past goes, yes... that does exist and all because it happened, but now it's only a memory and there's no changing it. http://www.dreamviews.com/community/...ad.php?t=52586 Zera's and Nondualistic's posts are in relation

[Riot Maker]

Holy shit, i am time traveling right now, and now, now, now. We are all time traveling, if you get what i mean. The only thing that comes close to time traveling is an object that goes at the speed of light, time will move slower around.