Very interesting subject, thanx for the process name.

i think the problem is that you can not survive time travel as human beeing.

what i thought about is that if time travel happens there will be another big bang. because there has to be some kind of consistency in time.

i mean look, just assume you could travel back in time and take actions. even your presence would change the whole time after. just think someone sees you and wastes 2 secs seeing you. normally when you wouldnt have travelled back he would never have seen you. but now his day is another because of the 2 seconds. he might come late, miss the bus, excuse somewhere. get fired because of this and so on. his actions also change those of his surroundings and so on so this is basically a chain reaction.

the time after your visit would never be the same. this is why i think time travel should never ever happen!

maybe there are already some vistiors from the future among us trying to change something in history? why not? just to keep the discussion going

Because of the problem you bring up, ulf, is why some suppose that there are infinite "slices" of time or the ability for infinite "realities" and these "realities" hold every possibility. Therefore, if someone where to go back in time, though he or she had never been in that time before, then a new "slice" or "reality" would be created in which that person was/is in that time. The "reality" in which that person never went to that time and he reality where that person actually did go to that time would co-exist on separate planes of existance.

Couldnt it be that the one clock had a little malfunction? Maybe because of the flight and g-forces?


Well in case of an airplain all the clocks on board of satellites orbiting around the earth, are behind the clocks on the earth
In terms of seconds per year !
All GSM navigators would not work without time correction

In a long period you dont'need an atomic clock to verify Einstein's theory
The first evidence came from the space
An Anerican vessel remained in the space about 1 year travelling at an average speed 40.000 km\hour
On return the clocks on board,(non atomic) were 3.6 second behind the clocks on the earth

Another interesting idea: Professor Stephen Hawking's theory is that humankind will never reach the point where we can travel back in time. The reasoning is simple : where are the time travellers?

More evidence of time travel: These things called "Mazons" (Masons, Mazens, something like that, I can't find the correct spelling), are emitted from the sun. They have a halflife of less than a second, yet it takes 8minutes earth time for light to travel the 93,000,000 miles from the sun to earth. How is this possible without the Mazons completely decaying? The answer is simple, because they are travelling at such a high speed, time is much slower for them, and thus they survive. In essence, they are travelling into the future.

Would you really want time travel (backwards especially) to even be invented? Think about it, life as we all know it would end if such a thing was to happen.

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The answer is simple, because they are travelling at such a high speed, time is much slower for them, and thus they survive. In essence, they are travelling into the future.

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It's not that time is "slower" for them, it just doesnt take em as long to get here, one half a second is exactly that, one half a second. This brings me to an mis-understanding. If you travel past the speed of light from Earth-PlanetX, time on earth would still be moving forward... it just doesn't take you long to reach PlanetX. How would this "reverse" time on Earth? Let's not worry about the mathematical conclusions here and think logically.

BTW - We have had time travellers arrive on earth. Though they never answered my above question.

http://en.wikipedia.org/wiki/John_Titor

Yes time is slowed down for them, and it has been proven mathematically, and supported physically. They go much slower than the speed of light, and for light to get to Earth, it takes Earth time 8 minutes. Like I said above, without time dialation, they would decay completely in a matter of seconds. And, travelling past the speed of light reverses the time for you, not for Earth. One theory which explains this concept is as Dan described above, infinite realities.

@ROMAC, well, not sure if I would want time travel to be invented, but with this concept it would allow people in the future to migrate to other planets (similiar to the american colonists in the 16th/17th centuries). It would allow you to travel 50 light years and age only a small fraction of that. Rest assure that people who leave will not return to Earth, as everything would be long gone by the time they got back.