time travel

[sjoecool1991]

Re: time travel

Well, I have read one theory of time that says time is a physical place, kind of like a parallel universe, and to travel in time, you would only have to move to a different "place" to go back.

[flamingspinach]

Re: time travel

Let me put it like this to finalize this thread. If time travel was possible, someone would have affected the past and as a result, would have affected us all at out present state and we would cease to exist.

lol thanks for "finalizing the thread". You forgot, in that paradigm, that the future isn't necessarily endless and that therefore the probabilities don't necessarily approach infinity. Furthermore, affecting the timeline wouldn't necessarily make you cease to exist - that's a convenient way to just stop thinking about it. And, time travel can also involve non-loopback time travel (i.e. going into an alternate past which diverges at that point) Finalize this thread? Dream on

Also, nice sig

[Suzuru]

Re: time travel

Let me put it like this to finalize this thread. If time travel was possible, someone would have affected the past and as a result, would have affected us all at out present state and we would cease to exist.

Uh, no.　Ever heard of quantum physics?

[megaxxx]

Re: time travel

lol thanks for "finalizing the thread". You forgot, in that paradigm, that the future isn't necessarily endless and that therefore the probabilities don't necessarily approach infinity. Furthermore, affecting the timeline wouldn't necessarily make you cease to exist - that's a convenient way to just stop thinking about it. And, time travel can also involve non-loopback time travel (i.e. going into an alternate past which diverges at that point) Finalize this thread? Dream on

1. I never mentioned that the future is endless.

2. If I was to go back in time and kill your parents before you were born, you would cease to exist. Any event that can alter the past, will alter the preset, and will alter the future. Take this next example. Say that you are playing on a computer, and you have no bruises on your body. I then travele back 3 hours into the past and visit your house. I then decided to throw you into the wall and leave a bruise on your arm. At this time, your current existance ceases to the effect that I have changed something that was never suppose to happen and create a new alternate reality where you do have a bruise.

Back to the Future makes this seem reasonable to what would happen.

3. You could go back into the past and not affect anything by not interfereing with any actions what-so-ever. You can stay in one spot and decide to leave the next minute.

Also, when I mentioned cease to exist, it doesn't mean you never did exist. You are simpily just in a different reality where something has happened making your original non-existant.

[sjoecool1991]

Re: time travel

Actually, the theory of time travel in Back to the Future is the most unrealistic thory of time travel there is.

And those movies are not really that good either.

[megaxxx]

Re: time travel

Actually, the theory of time travel in Back to the Future is the most unrealistic thory of time travel there is.

And those movies are not really that good either.

Then can you or anyone explain how affecting the past doesn't affect the present?

[Suzuru]

Re: time travel

Then can you or anyone explain how affecting the past doesn't affect the present?

I already pointed it out in the post above. For you to travel back in time, if that is possible. If you change anything in the past, you simply create a different time-line that will go on it own and in that time-line, yes if you kill his parents, he will not be born but from the time-line you came from. Nothing will change since all you did was create a divergence.

[flamingspinach]

Re: time travel

What Suzuru said was basically what I meant when I said "And, time travel can also involve non-loopback time travel (i.e. going into an alternate past which diverges at that point)". Also:

1. I never mentioned that the future is endless.

2. If I was to go back in time and kill your parents before you were born, you would cease to exist. Any event that can alter the past, will alter the preset, and will alter the future. Take this next example. Say that you are playing on a computer, and you have no bruises on your body. I then travele back 3 hours into the past and visit your house. I then decided to throw you into the wall and leave a bruise on your arm. At this time, your current existance ceases to the effect that I have changed something that was never suppose to happen and create a new alternate reality where you do have a bruise.

Back to the Future makes this seem reasonable to what would happen.

3. You could go back into the past and not affect anything by not interfereing with any actions what-so-ever. You can stay in one spot and decide to leave the next minute.

Also, when I mentioned cease to exist, it doesn't mean you never did exist. You are simpily just in a different reality where something has happened making your original non-existant.

You assumed the future was endless when you said that someone in the future MUST have altered the past. It's possible that time travel is possible but that nobody will ever use it, but that assumes that time is quite finite and is also a rather unstable argument.

Yes, I think we have all thought about this way beyond the point of realizing that you could kill your own grandfather... the point is, would that break the system? Could be, could be not. But if you were actually influencing YOUR OWN past...

"You could go back into the past and not affect anything by not interfereing with any actions what-so-ever. You can stay in one spot and decide to leave the next minute."

Does not work. The very fact of photons bouncing off your body rather than passing through thin air would change the world around you. There is no way to purely observe somewhere / a situation without changing it, much less to actually BE there.

"Also, when I mentioned cease to exist, it doesn't mean you never did exist. You are simpily just in a different reality where something has happened making your original non-existant."

Using the term "non-existent" is rather unsuited to what you're trying to describe - you make it sound as if their reality blew up or something, whereas according to most modern theories of quantum probability, you'd branch off into a different reality.

My main point is, though, time travel itself does not make sense as formally defined. Go and read my huge-ass post on a previous page lol 8)

-fs

[Reach]

Re: time travel

Time is not formally defined. Most of this is just mumbo jumbo. I assume going back in time is impossible for several reasons, but I can't prove my ground on any of them.

megaxxx assumes there is a past - future - ect because the human mind assumes there is because we create an artificial time.

There is absolutely nothing to show that killing your parents in the past would affect anything.

If anything, going into the past itself has already effected the outcome of the past, so are you really changing the past anyway? Last time I checked there were no time machines in 1782 or whatever, so going there with your time machine isn't even going into the proper past.

Building a time machine in itself seems like a paradox. It 'should' be impossible to go forward - by building a time machine you have effected everything that is going to happen after you built the time machine. The same thing applys to going backwards in time.

Actually, I think the movie time machine talks about that. Noone liked it but I recall it being a pretty decent movie. He goes into the future and the world is destroyed but only once he is told does he realize the future is like that because he built the time machine in the first place.

;oo

It's all screwed up, which is why I like to believe it's impossible ^__^

[RandomPscho]

Re: time travel

Isnt the rate at which time passes based upon the speed of the object that is percieving the time? If you moved almost the speed of light then it would appear that time around you is going extremly slow, and the same applies to the outside viewing you? Then wouldnt the ouside be in your future and vice versa?

[Suzuru]

Re: time travel

Isnt the rate at which time passes based upon the speed of the object that is percieving the time? If you moved almost the speed of light then it would appear that time around you is going extremly slow, and the same applies to the outside viewing you? Then wouldnt the ouside be in your future and vice versa?

It's called, read the posts in the thread 1st before posting.

[flamingspinach]

Re: time travel

Reach, the movie The Time Machine (both of the ones listed on IMDB anyway) are both based on The Time Machine by H. G. Wells, which was written long before the theory of relativity, or before people had put serious thought into the implications of time travel. So no, he had not changed the future. In fact the whole book was a commentary on the supposed eventuality of the gap between the social classes in Victorian England.

-fs

[TIkimanJr]

Re: time travel

Or some of the the events that have happened to us were the result of someone tampering with the fabrics of time.

[megaxxx]

Re: time travel

I see a little bit more clearler now. I now know that time travel does not exist for this reason. If the past was altered and the present cannot change, then it would skew 2 different time lines, making alternate universes. That, as we know, is impossible. Then if there was an alternate universe, then different energies would seperate between the seperate people that we represent. Time travel would then become illegal anyway for this purpose. I could make infinite skews in my entire life and I could even make myself king of the world.

[Suzuru]

Re: time travel

I see a little bit more clearler now. I now know that time travel does not exist for this reason. If the past was altered and the present cannot change, then it would skew 2 different time lines, making alternate universes. That, as we know, is impossible. Then if there was an alternate universe, then different energies would seperate between the seperate people that we represent. Time travel would then become illegal anyway for this purpose. I could make infinite skews in my entire life and I could even make myself king of the world.

Never say impossible if you have no way of proving that it is.