Time Travel

[Farrowlesparrow]

Without pointing to John Titor too much, what do you think about time travel? Do you think it would ever be possible? If it was would it "work" i.e would you sucessfully be able to travel back in time without completely ruining the whole chain of events that brought the time machine about? Ive heard a lot fo theories about time travel but nothing seems quite concrete.

 

[Chris D]

I don't think it is possible, but if it was it would make sense that causality would affect everything on the timeline.

For example if Lee Harvey Oswald was apprehended before he shot JFK then it would obviously affect the future. If I went back in time to last night and decided to go home after work instead of getting drunk then now I wouldn't have a headache.

It is a very interesting subject, but I don't know much about it.

 

[Gorgon]

Well, If there is a time travel machine I would travel to the Future.

But the question is : What if there is no Future?

 

[Farrowlesparrow]

Another thing acutally...If you could, would you travel to the future to aquire things? Or just mess around in any time period.

 

[Chris D]

You'd have to be careful in the future. It could really **** you up if you learnt how and when you die. And that's an interesting question Gorgon... what if there is no future? Would we be able to travel there? If it was possible would we be able to travel there and restart civilisation? Hmm...

 

[Frank]

I don't really believe in John Titor, so therefore I'm allowed to ask, if timetravel is possible, then how come we haven't been visited from the future yet?

 

[Farrowlesparrow]

Or perhaps its not possible to go to the furture at all, because it hasnt happened. Maybe if you go back in time, you cant come forward again.

 

[Gorgon]

I would obtain things. The first thing in my mind is Lottery Numbers.

I think it’s possible only to travel to future because I believe that the future is already been written

but the question is remain still

WHAT IF THERE IS no Future? :dozey:

 

[Farrowlesparrow]

So basically we dont have a choice in what we do because its all already going to happen in a certain way?

 

[Maxi]

I've thought about this a couple of times with friends and so... and I belive that it is impossible to travel further back in time then to the point where the thing you're travelling back in is made.

 

[Gorgon]

So basically we dont have a choice in what we do because its all already going to happen in a certain way?

Answer = YES. Means there is God who control everything.

Answer = No. Means there is no God and there is no Future.

God is the keyword in this case.

Do you believe in God?

 

[Chris D]

Answer = YES. Means there is God who control everything.

Answer = No. Means there is no God and there is no Future.

God is the keyword in this case.

Do you believe in God?

God is nothing to do with timetravel. Incidentally, no, I don't believe in God.

I control what I do, and I'm my own person. I'm not some puppet on a string.

 

[dawdler]

Time travels arent possible. If they where, I would already have gone back in time to close this thread. After I'd gone further back in time to give me the permissions to do that of course :E

 

[Deadline]

Time travels arent possible. If they where, I would already have gone back in time to close this thread. After I'd gone further back in time to give me the permissions to do that of course :E

I would go back in time and put all my money in microsoft shares when they cost like 1$ per share :naughty: then I would go back and be a billionaire

I would probably go back to the past/future to aquire things (ex. Antiques)... I wouldnt mind going 20 years into the future to see what Video Games look like... I mean, think of how far video games have come in the last 20 years, *drools while thinking of the possibilities*

 

[Stormy]

yea but marty mcfly done it in back to the future ! its gutta be true.. then that geza won all the cash with that book of sports hehe that was classy

 

[mortiz]

I believe there to be an infinite number of different "timelines" or "dimensions". Some may be exactly the same (i.e. you decided to not brush insted of brushing) and some may be completely different. In this respect then yes, you are free to do whatever you like, there is no "fate" as everything you do of your own free will affects the future. As for travelling forward in time, and there not being no pre-determined future, well It's weird to think that to travel back in time to the people who live in the era you've travelled back to you have come from the future, therefore there must be a future beyond what we make it.

 

[Jammydodger]

thought exists independently of the body and brain, but time is the creatoin of matter therefore can be controlled. thought is without time. i urge you to explore with truth and understanding that which the mind is capable of understanding and not that which the brain is restricted to. time is related to you as numbers, i offer to you that number and time have no depth.
And they are really a dysfunction of the brain to keep you tied to the physical dimensions of the three-dimensional world. this current mind keeps you a prisoner in time and space in the material physical world you call reality. in conclusion, time can be controlled.

 

[mchammer75040]

Time travel doesnt seem very possible, but who knows maybe it is. But if I could go back in time I would:

-Go back to cave man times, and do amazing things with our technology and make them worship me.

-Find jesus and fight him one on one, mortal kombat style

-Prank call people telling them when they are going to die.

:E

 

[lePobz]

Anyone that believes that there is more than one here and one now has been watching too much star trek.

Time travel is not possible. People get confused between 'time travel' and 'altered time perception'.

For example, the idea of being able to go back or forwards through time is just silly. Altered time perception is a proven theory, however. For example, it is possible to experience more or less time than someone else.

As an example of this, two digital chronometers (absolutely precise to the billionth of a nanosecond) were put onto two seperate planes. One plane set off in one direction around the earth, the other set off in the other. When both planes landed again at the other side, the chronometer on one clock was a few seconds infront.

This is the kind of 'time travel' that einstein theorised. Any ideas of going back through time and observing the past is absolutely ridiculous.

 

[mchammer75040]

thought exists independently of the body and brain.

And where is your proof of this? Thinking does happen in your brain, we can prove it! So please site your source.

 

[mchammer75040]

Anyone that believes that there is more than one here and one now has been watching too much star trek.

Time travel is not possible. People get confused between 'time travel' and 'altered time perception'.

For example, the idea of being able to go back or forwards through time is just silly. Altered time perception is a proven theory, however. For example, it is possible to experience more or less time than someone else.

As an example of this, two digital chronometers (absolutely precise to the billionth of a nanosecond) were put onto two seperate planes. One plane set off in one direction around the earth, the other set off in the other. When both planes landed again at the other side, the chronometer on one clock was a few seconds infront.

This is the kind of 'time travel' that einstein theorised. Any ideas of going back through time and observing the past is absolutely ridiculous.

Can you give me a link or something on that? Thats pretty intresting.

 

[Razor]

Travelling forward in time would be a lot easier to travel back in time. At the moment, all the theories about travelling back in time come from using wormholes, naturally formed or artificial ones or by countering the rotational spin of a black hole. However, travelling forward in time would be a lot easier, either by jumping into a different space/time dimension where time travels infinately slower and then just jumping out into normal space or by traveling close to the speed of light.

You also have the grand father effect as well, if you went back in time and kill your grandfather before your father/mother was conceived, it means you would of never of been born. If you were never born, how can you travel back in time to kill your grandfather? One answer to this is the theory of parallel universes, so when you jumped back to your present after killing your grandfather, you would still exist but you would exist in a different parallel universe where you never existed.

Probably got some of that wrong :s, travelling back in time is impossible and travelling forward in time is only possible though travelling at speeds close to that of light.

 

[PvtRyan]

Anyone that believes that there is more than one here and one now has been watching too much star trek.

Time travel is not possible. People get confused between 'time travel' and 'altered time perception'.

For example, the idea of being able to go back or forwards through time is just silly. Altered time perception is a proven theory, however. For example, it is possible to experience more or less time than someone else.

As an example of this, two digital chronometers (absolutely precise to the billionth of a nanosecond) were put onto two seperate planes. One plane set off in one direction around the earth, the other set off in the other. When both planes landed again at the other side, the chronometer on one clock was a few seconds infront.

This is the kind of 'time travel' that einstein theorised. Any ideas of going back through time and observing the past is absolutely ridiculous.

No it isn't. Einsteins theory also allows tachyon particles, those are particles with an imaginary mass that travel faster than light. You would need to ADD energy in order to slow them down.
These particles would travel back in time if you decrease their energy (thus accelerate them) enough and arrive before they are emitted.

And from another point of view, our visible universe consists of 3 spatial dimensions (x, y, z) and one temporal dimension (time).
A 2D character couldn't conceive moving up and down along the z-axis, they are just "on" that height and stay there. Maybe just like we can't deal with the idea that we can move forward and backwards along the time-axis. We're used to the idea that we can move back and forward along all spatial dimenstions, so why wouldn't it be possible to navigate in the time dimension like that?

 

[Jammydodger]

Here's a good forum for this - http://www.timetravelinstitute.com/ttiforum/ubbthreads.php

And mchammer thats just somthing I seen somwhere.
But iv been reading up on near death experience's and im starting 2 think there might be somthing in it.
dont get me wrong i dont believe in god im a atheist, but there might be somthing after we die.
Do we have a soul?

 

[mchammer75040]

Here's a good forum for this - http://www.timetravelinstitute.com/ttiforum/ubbthreads.php

And mchammer thats just somthing I seen somwhere.
But iv been reading up on near death experience's and im starting 2 think there might be somthing in it.
dont get me wrong i dont believe in god im a atheist, but there might be somthing after we die.
Do we have a soul?

Im atheist as well :naughty: . Anways theres no reason to believe there is a "soul"(but then again what do you mean by soul?). Everything we have come across as far as thinking, emotions, NDEs..etc. can be explained in the brain so the most consequent position is there isnt one. If everything is done by the brain where does the "soul" reside? I too have read up on NDEs and everything can be explained easily. I believe Discovery Channel had a special on this last sunday/saturday.

 

[Dedalus]

i'm one of those who thought the john titor story was a little fishy, but there was one theory that he spouted that i actually found to be quite interesting: worldlines. ie, if you travel back in time you wouldn't be travelling to your worldline, but to another similar one. of course this is supported by the theories of infinite universes and infinite possibilities, so essentially you're not travelling in time, you're just hopping from one 'line' to another.

so if the above is true then there is no way i could go back and mess things up in my own worldline. i could go ahead and mess someone elses up, but mine would be fine because they're independent. it's a very interesting theory and one that i think fits closer to the infinite universe theory than the ancient one worldline for everyone and everything theory.

i don't see how you can say time travel 'is' impossible. lots of using 'is' isn't advisable anyway, it's not like we know everything there is to know about science. http://superstringtheory.com/ they've managed to make atoms travel through time, so what makes you think they can't discover how to send a person through time. all you need to do is stop thinking about time as something on your watch. it's difficult to explain because i'm not a scientist but if you give the string theory website a good read it should outline a few things.

and if i could travel back in time i'd make it so that the spice girls never became a band

 

[mchammer75040]

of course this is supported by the theories of infinite universes and infinite possibilities, so essentially you're not travelling in time, you're just hopping from one 'line' to another.

Yea I remember reading about this theory in my discovery magazine, to me that sounds amazing. Infinite universes acting out infinite possiblities. That to me is just mind boggling, makes life seem so mechanical now...

 

[TVR_Fan]

If you chanced a thing in the past you could destory Space, also people would need to go though a work hole to start the time traveling.

 

[Direwolf]

Whenever I look into this stuff, I get the sudden revelation that we really don't know jack all about the Universe. Most of our perceptions of how stuff works is based on theory, and a lot of these theories seem like a kludge (meaning they explain the math and does a good job of predicting things, but isn't right anyway). Our inability to find 86% of the universe is a good example.
We know very little for certain on the notions of time, gravity, multiverses, or how the universe came into being. I'm willing to believe that just about anything is possible since there are almost certainly forces out there that science has yet to even discover, much less describe (if at all possible).
The thing with science is it's so bloody hard to prove a negative. I think its somewhat foolhardy to rule out the existence of God or time travel or anything else like that simply because we haven't figured it out in the meager time we've existed.

 

[Maskirovka]

what about the conservation of mass/energy? if you changed times, you'd be subtracting mass/energy from your time and adding it to another time. that would mean that we're wrong about the conservation of mass/energy...or that traveling back in time doesn't require you to leave the universe

anyone ever read Robert Heinlein's "All You Zombies"? here's a synopsis:

A baby girl is mysteriously dropped off at an orphanage in Cleveland in 1945. "Jane" grows up lonely and dejected, not knowing who her parents are, until one day in 1963 she is strangely attracted to a drifter. She falls in love with him. But just when things are finally looking up for Jane, a series of disasters strike. First, she becomes pregnant by the drifter, who then disappears. Second, during the complicated delivery, doctors find that Jane has both sets of sex organs, and to save her life, they are forced to surgically convert "her" to a "him." Finally, a mysterious stranger kidnaps her baby from the delivery room.

Reeling from these disasters, rejected by society, scorned by fate, "he" becomes a drunkard and drifter. Not only has Jane lost her parents and her lover, but he has lost his only child as well. Years later, in 1970, he stumbles into a lonely bar, called Pop's Place, and spills out his pathetic story to an elderly bartender. The sympathetic bartender offers the drifter the chance to avenge the stranger who left her pregnant and abandoned, on the condition that he join the "time travelers corps." Both of them enter a time machine, and the bartender drops off the drifter in 1963. The drifter is strangely attracted to a young orphan woman, who subsequently becomes pregnant.

The bartender then goes forward 9 months, kidnaps the baby girl from the hospital, and drops off the baby in an orphanage back in 1945. Then the bartender drops off the thoroughly confused drifter in 1985, to enlist in the time travelers corps. The drifter eventually gets his life together, becomes a respected and elderly member of the time travelers corps, and then disguises himself as a bartender and has his most difficult mission: a date with destiny, meeting a certain drifter at Pop's Place in 1970.

The question is: Who is Jane's mother, father, grandfather, grand mother, son, daughter, granddaughter, and grandson? The girl, the drifter, and the bartender, of course, are all the same person. These paradoxes can made your head spin, especially if you try to untangle Jane's twisted parentage. If we drawJane's family tree, we find that all the branches are curled inward back on themselves, as in a circle. We come to the astonishing conclusion that she is her own mother and father! She is an entire family tree unto herself.

a graphical representation from Michio Kaku's book "Hyperspace" (which you should read if you like this stuff...it's non-fiction)
http://zebu.uoregon.edu/~js/glossary/loop.gif


fries the brain...it's like the time loops in the terminator series...

anyway...if time travel is possible, then it's probably not possible to travel into the past...and if it is, then there are some very strict and very well-enforced laws governing traveling into the past or something...because someone would've ****ed with the timeline by now

unless of course there are rules governing time travel that we can't comprehend...or haven't thought of yet...like...traveling back in time really just carries you tp some sort of copy of the universe...and you don't change the same timeline you left...you change a new timeline created by your time travel...or something crazy like that.

 

[A True Canadian]

We have proven that time is not constant, but the speed of light is. Like the plane example before, we have seen it in satellites as well.

Facts:
The faster you go, the slower time "appears" to move around you.
The faster you go, the thinner you "appear" to get.
The faster you go, the slower you age.

This will hurt your brain:
It is impossible for something to accelerate to light speed; however once you are going faster than the speed of light, it is impossible to decelerate your speed to a point slower than light speed.

 

[Maskirovka]

that doesn't hurt your brain if you've taken calculus

and einstein predicted the "chronometers" thing. the faster you go, the slower time moves for you...

therefore if you took a super-accurate timepiece and put it in orbit around the earth moving very very fast...and you kept one calibrated the same on earth...
later you bring the one in orbit back down...it will be slow by a bit because of the way space-time works. einstien predicted this and as far as i know, this experiment was conducted and proved einstien correct...could be wrong about that though.

 

[A True Canadian]

Yeah, I'm starting to get the concept of it.

By the way, that story was awsome. I have never read something that has so many paradoxes and conundrums. My brain hurts now.

 

[Maskirovka]

ya...that book "hyperspace" is really good as well...talks about physics, time travel, creation, planets, etc...

 

[A True Canadian]

I'll have to look into it.

Hmmm. On a side note, has anyone met their exact double? I think I have.

When I was ten at my brother's hockey game I spotted this guy who looks like me only aged 20 years. Same haircut, same glasses, he was 6'2" approximatley (my height now). and (come to think of it) he was wearing a grey jacket.
I purchased a nice grey jacket two months ago.

I am almost 18, and I meet the same characteristics that this person had. Could it have been me from the future?

If so, time travel will need to be invented in the next 10 years or so.

 

[Pauly]

ok guys.....im skeptical about john titor....but.. what he had to say...is about worldlines..... this could make time travel possible....basically there are infinite amount of timelines or worldines....someone else as i speak is expeirencing your life...right now....your worst day...your happiest moment anything.... So, anytime we time travel, according to john, we go to a different worldline that is at the moment at where we want to travel to. TIME TRAVEL IS IMPOSSIBLE! but you can go to different worldlines at different times....and u could change their worldline..or whatever but we cant change our own. I believe its possible... this and next year....there should be signs of a CIVIL war in the united states breaking out. Starting slowly as arguments...eventually becomming a horrible war(According to john titor) WE will see if its true, very shortly.
OH yea...we could ask when hl2 gets released!!!!!!! i wish he was still here
Want to read up on the supposed time traveler, John titor? link is here: http://www.johntitor.com

 

[synth]

Time is relative based on the speed one is going. It is known that things traveling in space (such as astronauts) age more slowly than people on earth. Therefore, if the faster you go the more time slows down, and if at the speed of light there is no time, then wouldn't going faster than the speed of light make time go backwards? IMO this is the only way time travel could work, but to do it you'd have to solve the problem of how to get that fast, and how to avoid matter changing to energy at the speed of light.

 

[mortiz]

It is possible for something to go the speed of light but it would take millions (probably billions) of years to accellerate to that speed. My knowledge of this is pretty limited but if you trap something in orbit it is in apparantly constant accelleration.

 

[Fender357]

Well....... if the infinit number of universes theory is right, then there isn't much of a problem with it. (like the John whast his name stuff) It could be plausible.

But then you have to ask the question, how easy would it be to travel back in time as aposed to forward. There isn't any way to calculate how every event that happens now will affect the future. So you wouldn't know how "close" the future you would be traveling to would be to the one you would end up in if you had stayed in your own time stream.


And then there is the question of God. If all time is determined by God, then traveling through time (presumibly) would be against God's will. (that is unless it was in God's plan for you to travel through time, thus making everything unimaginably confusing, but thats how God wanted it )


Everyone Go Watch Donnie Darko!!!

 

[Fender357]

Ok....a lot of people are talking about one of Einstien theorums, and not exactly getting all of it right.

1) Yes the faster you go, the more time slows down. But this only applys to when you get close to the speed of light, every thing else is almost imesurable. (but it is possible, as in one of the jet tests)

One of the test worked like this.......(this is a test on speed affecting time)

there are 2 jet planes (dont remember what they were, but they are the really fast ones )
on both planes is an Atomic Clock, both are exactly in sink (sp)

One jet flew west , the other flew east .

Because of the rotation of the earth, one plane was flying faster than the other, one was going with the spin of earth, and was going faster, the other plane was going against the spin of earth.

When the planes landed, the clocks were off, the one going with the spin of the earth was ahead of the other.
So this is what some of you were talking about. But there is a different test, that test a different proporty of space-time.

2) Even though we talk about space and time like they are 2 different things, they aren't. You must have one to have the other and cant seperate them. When somthing happens to one, it affects the other.


Gravity bends space. Everyone should get that. But the bending (warping) of space has an effect on time. It goes like this...

Space Expands = Time Contracts (speeds up) (this dosn't happen though, unless there are White Holes that exsist)
Space Contracts (what happens from gravity) = Time Expands (slows down)

Soooooooo.... what does that mean??

Time flows slower on the surface of Earth than it does in oribit of earth (or out of its pull of gravity all together)

How they test this.

Have an atomic clock on earth. Send another one up with one of the space shuttles. When they come back the clock on earth is behind the one that was in space. Because in space, time flowed faster.

[edit] Here is the sort of complicated part that links these to tests and effects........... The faster you go, the slower time goes, the more gravitational pull there is...the slower time goes.
The part with gravity though, is that it can also be thought of as "speed".
Einstien thought that gravity was The acceleration of an object in the 4th demension.
Its hard to really get this, but basicly it says, gravity is speed (in the 4th demension).[/edit]