• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

I used to think time travel was next to impossible...

Page 2 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.
Originally posted by: HajikuFlip
Originally posted by: fredtam
Originally posted by: HajikuFlip
To believe in time travel is to believe that there are endless parallel dimensions and/or that everything has already happened and somehow we are living in the past whereas there are exact copies of us living in the past only seconds behind, and another copy even milliseconds behind, etc etc... That's just silly...


Ummm... No you wouldn't.

Yes, you would. If someone can travel back in time, that means that they can be in the future as we speak. If I'm in the past, and he's in the future, that is multiple dimensions. If this guy from the future's past is exactly like my life now, then everything is already predetermined. Unless of course the guy from the future has a different past then what I am currently living, which would make it rather pointless to travel back in time to. But even if that were so, how do you know this guy from the future couldn't travel back to a time/dimension where they would already have technology even better then his? Eh?

I still don't understand how "It's just silly" because how do you know that there aren't exact duplicates (barring any changes that happened to them in their 'dimensions') of ourselves following different choice paths so to speak? How is that so hard to believe? Wouldn't it not being true be just as hard to believe?
 
Originally posted by: eldorado99
Originally posted by: HajikuFlip
Originally posted by: fredtam
Originally posted by: HajikuFlip
To believe in time travel is to believe that there are endless parallel dimensions and/or that everything has already happened and somehow we are living in the past whereas there are exact copies of us living in the past only seconds behind, and another copy even milliseconds behind, etc etc... That's just silly...


Ummm... No you wouldn't.

Yes, you would. If someone can travel back in time, that means that they can be in the future as we speak. If I'm in the past, and he's in the future, that is multiple dimensions. If this guy from the future's past is exactly like my life now, then everything is already predetermined. Unless of course the guy from the future has a different past then what I am currently living, which would make it rather pointless to travel back in time to. But even if that were so, how do you know this guy from the future couldn't travel back to a time/dimension where they would already have technology even better then his? Eh?

I still don't understand how "It's just silly" because how do you know that there aren't exact duplicates (barring any changes that happened to them in their 'dimensions') of ourselves following different choice paths so to speak? How is that so hard to believe? Wouldn't it not being true be just as hard to believe?


Because if there were other people in a dimension given their own choices, you would have a completley different world. Even if the seperate clone dimensions started right now and started splitting off, pretty soon they wouldn't be even close to identical.

Say in Dimension 1 you have people A B C D. A marries B and C marries D. They both have kids AB1 and CD1 respectively.

Now in Dimension 2 you still have the same A B C D. But since by your theory, they have their own choices so you could have AD and BC marry. Which would create totally different offspring AD1 and BC1, or none at all.

So if there were other clone dimensions but were given their own choices, they would only be clone dimensions for a very short period of time. That is, unless the only freedoms of choice they had were to scratch which ball or to use this type of deoderant, even then it would still make a significant affect on their life choices. It's just not plausible. Make sense?

Edit: Not to mention, do these other dimensions have different versions of God? Which God is more powerful? Do these Gods have the ability to come out of different realms and pull a Trading Spaces: Realms Edition ? You sound like the religious type so I'd like to hear your view on that.
 
Now it makes sense, except that just because it doesn't seem like its true (ie not plausible) doesn't make it so. That is what I am saying. One of the main points of my original post was that I used to think I knew what was and was not possible, but I learned that I really have no idea, because my ideas made sense to me, they had to be true, or so I thought.
EDIT: Well, this discussion is purely scientific, (using what are largely seen as mythological ideas), And since I cannot disagree with the idea of religion more, I don't think God or a god exists, its possible but so far there is no evidence at all.
 
Originally posted by: eldorado99
Now it makes sense, except that just because it doesn't seem like its true (ie not plausible) doesn't make it so. That is what I am saying. One of the main points of my original post was that I used to think I knew what was and was not possible, but I learned that I really have no idea, because my ideas made sense to me, they had to be true, or so I thought.

I can respect that. I just think people in general try to over complicate life to try and explain the things they don't understand. I think everything is actually much simpler than what any of us imagine. The only question that baffles me is that there HAS to of been things that have been around forever. Now THAT just doesn't make any sense. 😕

Any other thoughts on the Time Travel issue from anyone?
 
the past does not exist, nor does the future. Time travel is impossible. the idea of a past and future is nothing but figments of our imagination.
 
By the way, Time Travel is only possible under 2 conditions.

a) We can see the past, but cannot go into it.

b) We can travel to the future, but cannot go into it.

Both of which, of course, are limited to some degree.
If anyone needs explanation on that, I can offer one.
 
Originally posted by: r6ashih
the past does not exist, nor does the future. Time travel is impossible. the idea of a past and future is nothing but figments of our imagination.

Really? Oh... okay then I will throw away all of my beliefs.
 
Originally posted by: HajikuFlip
By the way, Time Travel is only possible under 2 conditions.

a) We can see the past, but cannot go into it.

b) We can travel to the future, but cannot go into it.

If anyone needs explanation on that, I can offer one.

I understand a), and I agree wholeheartedly, which doesn't matter since its proven fact. But what do you mean about b)? And again, not that you have to change what you believe or anything, but the whole point of this discussion was to avoid people thinking they know what is and what is not possible, dig?
 
Originally posted by: eldorado99
Originally posted by: HajikuFlip
By the way, Time Travel is only possible under 2 conditions.

a) We can see the past, but cannot go into it.

b) We can travel to the future, but cannot go into it.

If anyone needs explanation on that, I can offer one.

I understand a), and I agree wholeheartedly, which doesn't matter since its proven fact. But what do you mean about b)? And again, not that you have to change what you believe or anything, but the whole point of this discussion was to avoid people thinking they know what is and what is not possible, dig?

It's hard to explain and sound credible since I don't know the correct terminolgy for the process. But in a nutshell if we were to get in a ship and revolve around the earth fast enough, time would slow down for us. This would only be but a few seconds by going even lightspeed afaik, but it is 'traveling into the future' nonetheless.
 
Originally posted by: HajikuFlip
Originally posted by: eldorado99
Originally posted by: HajikuFlip
By the way, Time Travel is only possible under 2 conditions.

a) We can see the past, but cannot go into it.

b) We can travel to the future, but cannot go into it.

If anyone needs explanation on that, I can offer one.

I understand a), and I agree wholeheartedly, which doesn't matter since its proven fact. But what do you mean about b)? And again, not that you have to change what you believe or anything, but the whole point of this discussion was to avoid people thinking they know what is and what is not possible, dig?

It's hard to explain and sound credible since I don't know the correct terminolgy for the process. But in a nutshell if we were to get in a ship and revolve around the earth fast enough, time would slow down for us. This would only be but a few seconds by going even lightspeed afaik, but it is 'traveling into the future' nonetheless.

Good enough for me, hey, anythings possible right?
 
Originally posted by: HajikuFlip
Originally posted by: fredtam
Originally posted by: HajikuFlip
To believe in time travel is to believe that there are endless parallel dimensions and/or that everything has already happened and somehow we are living in the past whereas there are exact copies of us living in the past only seconds behind, and another copy even milliseconds behind, etc etc... That's just silly...


Ummm... No you wouldn't.

Yes, you would. If someone can travel back in time, that means that they can be in the future as we speak. If I'm in the past, and he's in the future, that is multiple dimensions. If this guy from the future's past is exactly like my life now, then everything is already predetermined. Unless of course the guy from the future has a different past then what I am currently living, which would make it rather pointless to travel back in time to. But even if that were so, how do you know this guy from the future couldn't travel back to a time/dimension where they would already have technology even better then his? Eh? Do you choose what dimension out of a seemingly infinite number of dimensions to go to?


On a macro scale wouldn't all histories except for one cancel out?
 
Originally posted by: fredtam
Originally posted by: HajikuFlip
Originally posted by: fredtam
Originally posted by: HajikuFlip
To believe in time travel is to believe that there are endless parallel dimensions and/or that everything has already happened and somehow we are living in the past whereas there are exact copies of us living in the past only seconds behind, and another copy even milliseconds behind, etc etc... That's just silly...


Ummm... No you wouldn't.

Yes, you would. If someone can travel back in time, that means that they can be in the future as we speak. If I'm in the past, and he's in the future, that is multiple dimensions. If this guy from the future's past is exactly like my life now, then everything is already predetermined. Unless of course the guy from the future has a different past then what I am currently living, which would make it rather pointless to travel back in time to. But even if that were so, how do you know this guy from the future couldn't travel back to a time/dimension where they would already have technology even better then his? Eh? Do you choose what dimension out of a seemingly infinite number of dimensions to go to?


On a macro scale wouldn't all histories except for one cancel out?
Its possible but then that would probably happen so far down the line that there could be multiple versions of humanity each with its own set of dimensions.
 
you can't travel back in time because in order to do that u would have to travel faster than the speed of light and by that time you will be dead because ur body can't support the pressure.
 
Originally posted by: Ryuson99
you can't travel back in time because in order to do that u would have to travel faster than the speed of light and by that time you will be dead because ur body can't support the pressure.

I suggest you read the entire thread before saying something as definitive as time travel isn't possible, but I do see where you are coming from nonetheless.
 
Well is there actually proof that time exists? What if everything is just one gigantic moment. Im just throwing out crap, I don't know anything about quantum physics and what not 🙂 But yea, that's a thinker.
 
Originally posted by: xSkyDrAx
Well is there actually proof that time exists? What if everything is just one gigantic moment. Im just throwing out crap, I don't know anything about quantum physics and what not 🙂 But yea, that's a thinker.

Isn't a moment, a unit of time? But I guess it all depends on what your definition of time is....
 
Originally posted by: eldorado99
Originally posted by: fredtam
Originally posted by: HajikuFlip
Originally posted by: fredtam
Originally posted by: HajikuFlip
To believe in time travel is to believe that there are endless parallel dimensions and/or that everything has already happened and somehow we are living in the past whereas there are exact copies of us living in the past only seconds behind, and another copy even milliseconds behind, etc etc... That's just silly...


Ummm... No you wouldn't.

Yes, you would. If someone can travel back in time, that means that they can be in the future as we speak. If I'm in the past, and he's in the future, that is multiple dimensions. If this guy from the future's past is exactly like my life now, then everything is already predetermined. Unless of course the guy from the future has a different past then what I am currently living, which would make it rather pointless to travel back in time to. But even if that were so, how do you know this guy from the future couldn't travel back to a time/dimension where they would already have technology even better then his? Eh? Do you choose what dimension out of a seemingly infinite number of dimensions to go to?


On a macro scale wouldn't all histories except for one cancel out?
Its possible but then that would probably happen so far down the line that there could be multiple versions of humanity each with its own set of dimensions.



Sum-over-histories allows for it and also time warp with small probability.
 
Originally posted by: eldorado99
Originally posted by: Ryuson99
you can't travel back in time because in order to do that u would have to travel faster than the speed of light and by that time you will be dead because ur body can't support the pressure.

I suggest you read the entire thread before saying something as definitive as time travel isn't possible, but I do see where you are coming from nonetheless.

Most theories of time travel (for going back to the past) are centered around going past the speed of light (roughly 186,000 miles per second).
To go past the speed of light, you must at least BE at the speed of light, if even for an insignificant (but trust me its significant if you read below) amount of time.
As you approach the speed of light, relativistic change gets closer to infinity. At the speed of light wouldn't relativistic change be infinite? If this is so, even if you are in the speed of light for 1 nanosecond before passing it (and time travelling backwards) you would already passed an enormous amount of time and the "big crunch" would be done with you before you could blink. At least that is one of my ideas 😉

Edit: in other words you and the universe would already end before you could accelerate past the speed of light, C.
 
Back
Top