Time Travel

[JohnR7]

A major theme in most of the fiction stories of time travel deal with someone going back in time and doing something that would change the future.

Yet so many people have the feeling that there is nothing they can do that will make a difference.

Do you feel that everything we say, think or do, has a impact somewhere? Do we control our destiny? Can we have a positive or a negitive impact or effect on the world around us and on the future?

People use to have this ideal that they could somehow do something that would make this world a better place to live. Is that possible? Or do the wheels of time just grind away and there is not really all that much we can do, to make a difference?

 

[lithium.]

I guess it's possible but when you go future you can't come back cause you wouldn't exist in the present. If you could go into the past you couldn't return to the present it would be as if you were erased from space & time. I am not really sure about this I talked to a few people about it.

Fate doesn't exist, but if you were to be able to back in time and kill your grand father you wouldn't be alive you would be erased from space and time. But I believe that as the technology get more advanced anything we want can be possible. So maybe in time there we will be advanced enough to time travel. And I havn't seen a wheel of time so until I do I will never believe in fate. But hey I would love to go back in time to I could see the dinosaurs.

 

[ocean]

It's impossible to time travel, and it's impossible to change the world for the better. It's a lost cause.

 

[ocean]

Originally posted by seesaw
I guess it's possible but when you go future you can't come back cause you wouldn't exist in the present. If you could go into the past you couldn't return to the present it would be as if you were erased from space & time. I am not really sure about this I talked to a few people about it.

Fate doesn't exist, but if you were to be able to back in time and kill your grand father you wouldn't be alive you would be erased from space and time. But I believe that as the technology get more advanced anything we want can be possible. So maybe in time there we will be advanced enough to time travel. And I havn't seen a wheel of time so until I do I will never believe in fate. But hey I would love to go back in time to I could see the dinosaurs.

If they have time machines in the future, then why don't we seee people from the future today?

 

[lithium.]

Ocean I wouldn't say impossible it might be impossible with the technology we have now. In fact, according to Albert Einstein's equation, E = mc² , time travel is possible, at least in one direction. but maybe in a 3 or 400 years we might have the right physics and technology to do it.

 

[lithium.]

Btw ocean welcome back.

 

[lithium.]

Originally posted by ocean
If they have time machines in the future, then why don't we seee people from the future today?

How do you know you havn't. Humans 400 years from now will look just like human 2 days from now so there might have been time travelers. But from the people I have talked to if you go into the past you can't return to the present you would nolonger exist.

Btw i just remembered someone telling me this (I have talked to if you go into the past you can't return to the present you would nolonger exist.) so don't take it out on me if I am wrong.

 

[JohnR7]

Originally posted by seesaw
according to Albert Einstein's equation, E = mc² , time travel is possible, at least in one direction.

They have traveled in time, but only by a fraction of a second. If you put an atomic clock on the ground and one on an airplane and send it around the world at the fastest speed that man can travel. The clock on the plane will be a spilt second different from the one that stayed in the same place. It was proportional to the speed of the plane. So they feel that is evidence that time stops as the speed of light.

 

[Morat]

  Um, they didn't travel in time there, John. Time dilated. It moved slower for the travelers than those of us stay-at-homes.

   But that's not time travel, anymore than existing from birth to death is time travel.

 

 

[JohnR7]

Originally posted by seesaw
I would love to go back in time to I could see the dinosaurs.

I think someday it will be possible in a way. Through something like a time "warp". We would only be able to observe though, like looking through a window.

If you figure some of the wonders in the universe are 16 billion light years away from us. What we are looking at is 16 billion years old. Because there is no time as the speed of light.

If I ever figure out a way to do it, I will set up a theme park like Disney world and make lots of money So I can feed the poor people in the world.

I had a dream the other night that day one still exists, that we could somehow be a part of it, but I was not able to remember all of what I saw in the dream. They say there is a reason why they Bible calls it day one for the beginning, rather than to call it the first day.

 

[ZiSunka]

Originally posted by JohnR7
A major theme in most of the fiction stories of time travel deal with someone going back in time and doing something that would change the future.

Yet so many people have the feeling that there is nothing they can do that will make a difference.

Do you feel that everything we say, think or do, has a impact somewhere? Do we control our destiny? Can we have a positive or a negitive impact or effect on the world around us and on the future?

People use to have this ideal that they could somehow do something that would make this world a better place to live. Is that possible? Or do the wheels of time just grind away and there is not really all that much we can do, to make a difference?

What about mental time travel having an impact on your life and those around you?

Like, you want to do something, say a career choice, and you mentally project yourself into the future and see how that choice might impact your life and others. Say you get a job offer that requires you to move 800 miles from your family. You mentally project into the future and see how that move affects your family, to see if you can live with the consequences. Do you miss out on family things, like Christmas and your nephew's recitals? Do you think you can build a better life there and let your family freely visit so you don't lose touch with them?

What about choosing a spouse. Instead of just seeing the passion you have for her now, project yourself into the future and see if you can picture her still meeting your needs and your desires 10 years from now, or twenty. If you can honestly say that your life will be better with her then, then she may be right for you. If you can see that your life will be troubled and unhappy, pass her by and wait for God's best will for your life.

Mental time travel can save you lots of heartache later.

 

[DNAunion]

DNAunion: Suppose there are two twins: Alice and Bob. Alice stays here on Earth while Bob travels at near the speed of light to a star many light years away, then turns around and comes back, again at near the speed of light. Because of time dilation, upon meeting up with his twin Alicel again, Bob will be younger. For Bob, only 2 years (or what have you) have passed while for Alice 10 or 15 years (or what have you) have elapsed. Alice has grey hair, wrinkles, and her hearing is going - Bob hasn't aged much at all. Now consider what else Bob sees. Technology has advanced 10 or 15 years, new skyscrapers have been built, genetic engineering has been perfected, etc. Yet there has simply not been enough time for all of this to have occurred from Bob's experience - the world has changed/aged drastically but Bob hasn't. Has Bob traveled into the future?

 

[lithium.]

JohnR7, look at this thead.

http://uplink.space.com/showflat.ph...=351356&page=0&view=collapsed&sb=5&o=0&fpart=

 

[sulphur]

Try looking for wormholes.They could be the answer!!!

 

[The-Doctor]

Interesting debate re time travel. I ahve been following ideas and the like on this topic for a while now from various people.
I feel personally time travel is theoretically possible but out technology is simply not developed enough to actually do it practically.

Someone once described the flow of time like a long piece of string with an end you cannot see...this end is the future as yet unformed. The solid string is the past and at the very end of this is the present which is the moment that we all exist in. In order to travel backwards yet remain the same age as you are now you would have to create a field that is a seperate time stream in itself thus you remain in the present but externally from the field you could then travel backwards since you cant travel into a future that does not exist. You would then switch of the field around you and enter the past. There are dangers in doing this as any interference no matter how slight could have severe reprocussions to the future and even alter history. However to generate such a field then remove yourself from normal time and go back would require enormous amounts of energy which at our current eveloutionary moment we can't but its fun to think "what if"

 

[The-Doctor]

I forgot to add that it is possible to travel backwards in time. As you accelerate towards the spead of light so time around you slows down unitl you reach light speed where it stops altogether. Keep accelerating and times begins to move backwards. However it is not possible to go faster than light.

 

[DNAunion]

The-Doctor: I forgot to add that it is possible to travel backwards in time. As you accelerate towards the spead of light so time around you slows down unitl you reach light speed where it stops altogether.

DNAunion: You can't accelerate to c because you have mass. It is impossible to accelerate an object or particle with positive rest mass up to the speed of light.

The-Doctor: Keep accelerating and times begins to move backwards. However it is not possible to go faster than light.

DNAunion: You can't accelerate to the point that time remains still (because you have mass) - and you surely can't accelerate more than that to get time to run backwards (PS: Battlestar Galactica wasn't a factual TV show).

Time travel into the future is possible and actually occurs, by relativistic time dilation.

Time travel into the past may be possible - John Gribbin mentions the idea of, something like, "turning the 4 dimensions on their side". You see, in the three spatial dimensions travle is possible in both directions. It is only the time dimension that appears to be a one-way street. By reassigning the four dimensions, one of the spatial dimensions becomes the new time dimension and the original time dimension becomes a spatial dimension. You then travel along that new spatial dimension, and when you get to "where" you want, you change the four dimensions back to their original orientation. Voila, you've traveled back in time. Of course, John Gribbin explains it in much more detail that I just did.

 

[Hank]

Originally posted by The-Doctor
I forgot to add that it is possible to travel backwards in time. As you accelerate towards the spead of light so time around you slows down unitl you reach light speed where it stops altogether. Keep accelerating and times begins to move backwards. However it is not possible to go faster than light.

I don't think time travel is possible.

One question though, not even scientific: If time travel where possible, it must certainly be possible for God. Could He not travel back to before He made Adam and Eve and re-create the first couple; not creating Satan before hand and so on?
No one would ever know He did so, and we may or may not live happy ever after.

Yes, all you logical inclined people this question does not disprove time travel, - it is just a question 'k

 

[DNAunion]

One question though, not even scientific: If time travel where possible, it must certainly be possible for God. Could He not travel back to before He made Adam and Eve and re-create the first couple; not creating Satan before hand and so on?

DNAunion: I am out of my league here, so take this with a grain of salt.

I believe the idea of travelling back in time requires something called a "constistent history" and considers there to be "infinite" number of "universes" (or timelines, or histories) - one for every possible outcome that could have occurred (if a given electron could jump down to the first or second energy level, it would do both - down to the first in one "Universe" and down to the second in another "Universe"). So each point in "time" is branches off, leading to multiple forks in the road, with each taken. Starting from any point, you could travel backward ONLY ALONG A PREEXISTING timeline. You could not just jump around all willy nilly. This guarantees that no matter where/when you end up, it already occurred (in one of those alternate "universes"). That is, you can't possibly kill your own father because there is no timeline connecting such an event with any path that actually occurred.

So all you could do is travel back, at the most, to your own birth - that marks the beginnin of all timelines associated with you. Going back any further would be inconsistent with any history. From your birth (or some other point in your life), you could take a different route through history - up a different fork. But, that fork and all possible branches off of it already occurred, in the past (relative to your starting in the future!). So you wouldn't be creating a new reality, just going up a different, preexisting one.

Okay, let me repeat - I am out of my element here, so this may all be wrong.

 

[lithium.]

Originally posted by Hank
I don't think time travel is possible.

One question though, not even scientific: If time travel where possible, it must certainly be possible for God. Could He not travel back to before He made Adam and Eve and re-create the first couple; not creating Satan before hand and so on?
No one would ever know He did so, and we may or may not live happy ever after.

Yes, all you logical inclined people this question does not disprove time travel, - it is just a question 'k

Well time travel is possible and will probably be possible one day. I am not really sure, but from what I have read and heard if we were able to travel back in time you could never return back to what you thought was the present cause the time line would have been changed. It would almost be like you never existed but I don't know if this is completely true.