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Old 04-27-2008, 10:06 AM   #1
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Time travel

Was watching back to the future yesterday ( best trilogy of all time ) and the possibility of time travel got my thinking.

What if someone from the future went back in time and told Hitlers Great grandparent. Because of the lives saved from no WW2 maybe the inventors of the flying car and the doctors who discovered the cure for cancer wouldnt of died. All those relatives who died from car accidents or from cancer would of survived which might have even threatened your very existence.

Im totally fascinated by the idea of time travel or Time slips. Time slips are pretty much when the parrel universe clashes with ours, which can cause buildings to suddenly appear then disappear in the space of a few hours or even a few seconds.

Could this even explain ghosts and other supernatural experiences ?

Possibilities are endless.
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Old 04-27-2008, 11:52 AM   #2
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I like this topic; my question would be, "IF time travel WAS possible, and we had ONE chance to change one thing, just ONE, whether it be a personal or historic event, what would that one thing be????"

Even I am gonna have to give that some thought...
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Old 04-27-2008, 01:09 PM   #3
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It would be impossible, changing one thing would change a series of other variable factors.

If you did manage to change one thing without it effecting anything else i be quite suprised.
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Old 04-27-2008, 01:21 PM   #4
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If your body was also positioned back in time it would duplicate that matter as it was existing in something else at other points in time.

And the Earth is not fixed in space - travel through time at this point in space would leave you in space not on Earth.

Paradoxes could be avoided if time travel was matched by traveling an equivalent distance in space (e.g. 1 light year for every year). But I suspect that it creates problems with information. And if the Earth was moving towards you then it could recieve a message and violate causality.
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Old 04-27-2008, 01:26 PM   #5
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There is a particularly odd possibility for backwards time travel in theoretical physics, where Point A and Point B are created in "the present," but Point B is manipulated through time dilation to go to some point in the future. Point B, at some point, is slowed down to "normal speed," thus aging at a normal rate, but in the future. As such, it is possible for, say, if both points were created in 2008 and Point B existing in 3008. Thus, 2008 and 3008 could pass information between each other.

In terms of creating time paradoxes, it is impossible, for such events would already be figured into history, even if the people in 3008 think that they'd be able to alter history. In the end, any "alterations" they'd perform would already have been noted in the historical record.

My apologies if this is too serious for this thread, but I'm just as fascinated by this kind of stuff too.
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Old 04-27-2008, 01:29 PM   #6
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whoa....I can't cope with this at 3am
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Old 04-27-2008, 01:47 PM   #7
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Quote:
Originally posted by melon
There is a particularly odd possibility for backwards time travel in theoretical physics, where Point A and Point B are created in "the present," but Point B is manipulated through time dilation to go to some point in the future. Point B, at some point, is slowed down to "normal speed," thus aging at a normal rate, but in the future. As such, it is possible for, say, if both points were created in 2008 and Point B existing in 3008. Thus, 2008 and 3008 could pass information between each other.
It sounds like the resolvable twin "paradox"; what do you mean by transmit information? I am not seeing how you could send information from the future backwards in time.
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In terms of creating time paradoxes, it is impossible, for such events would already be figured into history, even if the people in 3008 think that they'd be able to alter history. In the end, any "alterations" they'd perform would already have been noted in the historical record.
What supports this assertion, if time travel is possible it usually causes problems for causality. These paradoxes are conditional upon there being only 1 timeline in a single 4D universe.

Quote:
My apologies if this is too serious for this thread, but I'm just as fascinated by this kind of stuff too.
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Old 04-27-2008, 02:03 PM   #8
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Originally posted by mandy1973
whoa....I can't cope with this at 3am


Don't worry Mandy, if we get the flux capacitor working again we'll zip over there in the DeLorean and take you back to.......well..........pick a time, any time
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Old 04-27-2008, 02:06 PM   #9
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Don't worry Mandy, if we get the flux capacitor working again we'll zip over there in the DeLorean and take you back to.......well..........pick a time, any time
We need something with a little more kick... Plutonium!

I love reading about time travel theory, always been an interest of mine.
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Old 04-27-2008, 02:10 PM   #10
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flux capacitor
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Old 04-27-2008, 02:15 PM   #11
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Old 04-27-2008, 02:21 PM   #12
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Originally posted by bonocomet


Great Scott!
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Old 04-27-2008, 02:25 PM   #13
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Quote:
Originally posted by melon
There is a particularly odd possibility for backwards time travel in theoretical physics, where Point A and Point B are created in "the present," but Point B is manipulated through time dilation to go to some point in the future. Point B, at some point, is slowed down to "normal speed," thus aging at a normal rate, but in the future. As such, it is possible for, say, if both points were created in 2008 and Point B existing in 3008. Thus, 2008 and 3008 could pass information between each other.

In terms of creating time paradoxes, it is impossible, for such events would already be figured into history, even if the people in 3008 think that they'd be able to alter history. In the end, any "alterations" they'd perform would already have been noted in the historical record.

My apologies if this is too serious for this thread, but I'm just as fascinated by this kind of stuff too.


AW! you think Human kind will last till 3008 hope so
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Old 04-27-2008, 03:08 PM   #14
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Maybe he doesn't think, maybe he knows...


He's a time traveler!
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Old 04-27-2008, 03:18 PM   #15
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Quote:
Originally posted by Mr. BAW
I like this topic; my question would be, "IF time travel WAS possible, and we had ONE chance to change one thing, just ONE, whether it be a personal or historic event, what would that one thing be????"
I'd go back in time to Texas, and give a young George Bush some advice: "You know, kid, wilderness adventures in rough weather, where there's little chance of survival, can be just as fun as looking for oil!"

If the time travel was open-ended, I'd go back to see as many great concerts as possible.
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