Is time travel logical?

Question

- If one enters the past, then the act of leaving the future has yet to occur. Thus, the traveler never entered the past.

- If one enters the future, and skips but a brief moment in time, he is non-existant within a space of time. Thus, the past one and future one become unique and independant.

- If each moment in time is preserved, (be it in some sort of demension or reality) than life is constant. Then even the dead are alive, and the alive have already died. Then history and the future occur simultaneously.

Is time travel really logical?

Answer 1

Time travel etc are the most complex ideas in physics with alot of paradoxes. Read a few time travel books, Hawkings Brief history of time is a good one. Not even leading physicists understand fully time travel and its consequences, so i doubt u will get an answer today!

Answer 2

For the first, yeah, and what happens when you go back in time and destroy the time machine? What happens if you kill your father? I agree - time travel in the past is illogical, as shown in the paradoxes. Besides, this also violates conservation of mass and energy, which would make physicists really mad at you.

The second happens all the time. It's the theory of special relativity. If you are moving relative to an inertial reference, then time is faster for you. (See the movie Flight of the Navigator - well, the going into the future part anyway). You aren't "nonexistent" in the space of time, you are just experiencing this time at a faster pace then someone observing you from a non-moving reference. (Time flies when you're having fun at nine-tenths the speed of light).

The third, I think you are assuming that you can move in the time dimension (you are assuming preservation of the moment for such purposes), and then you say that they exist "simultaneously", putting back in an idea of a constantly-progressing dimension which you can't move around in (a secondary time dimension, perhaps? "Real-time?") This is the "Back to the Future" mistake. That someone goes back and changes something, then someone else can go back and change it back, as they somehow know the way things were supposed to be.

Doc: "You aren't thinking fourth dimensionally"
Marty: "Yeah. I have a real problem with that"

"Time is just God's way of keeping everything from happening all at once". ;)

Answer 3

When you view time as "Circular" or "Cyclical" vs "Linear" then time travel is very logical.

"The dharmic religions such as Buddhism and Hinduism, have a concept of wheel of time, that regards time as cyclical and consisting of repeating ages. Thus if one could go far enough into the future, one would return again to the past. This concept necessarily requires the existence of fifth and sixth dimensions, within which the hypothetical circle of space-time might exist and is consistent with the Kaluza–Klein theory." <1> There is a real captivating science fiction book about this called, "Childhoods End" by Sir Arthur C. Clarke <2>.

Worm Holes (Cyclical time) are also center of attention in time travel ... check it out! <3>

Answer 4

In time it is always now.If I were to travel to the past or future it would still be the now.The past is a recording of electron travel.There would never be enough energy to alter even one electron's travel in the past.You could watch the past but you could not change it.I travel to the past today and blow up the enemy.Tomorrow the enemy would still be there.The future is held in existence with particles also,but these particles are not electrons.For a perfect circle to exist we must have an infinitely long X axis. Time is a dimension and dimensions take up space.There would be particles of time.I suspect that you could scan a core phenomena to time travel with,say, a computer.(my findings)

Answer 5

For an excellent treatment of this problem, see Larry Niven's The Theory and Practice of Time Travel, found in his collection All the Myriad Ways.

Answer 6

in a scense it is logical. but one must find a way to pass through space/time safely without getting torn to shreads. it is presumable that black holes are so dense that they can create a tear in space/time. and in doing so they could connect to eachother through what is known as a wormhole. and some beleive that tearing through a hole in space/time could in turn send you forward or backward in time. but we cannot prove that they even exist yet and if they do we can be certain that they are only open for short moments in time. but if we can generate enough anti-matter (any matter whos positive and negative assets reverse polarity) we could presumably prolong the colapse of the space/time continuum on itself. but if we could pass throught the wormhole safely we could presumabley pas forward and backward through time.

Answer 7

We are all moving forward in time.

Going backwards in time is impossible. It breaks too many laws of physics.

For instance, there would be two of you. This violates the law of conservation of mass.

Answer 8

Yes its logical but I reccommend you stop thinking about it. it will never happen because of two reasons.(1) the Gov. wont allow it.and (2) if it did happen the person who went would go crazy and the world would probably end because of his tampering.

Answer 9

Yeah. Only in movies and fiction and in imagination etc. Not in real life

Answer 10

You spent WAY too much time thinking about this!