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Originally Posted by FngKestrel
There's no way that we currently know how to go back in time, that is part of the debate. Because we only have equipment that lets us detect travel in a forward direction (timewise), that's the only info we have that's applicable.
To bring up a point though, I remember a philosophy class I took a few years back where the concept of time was brought up. When pressed for definitions and synonyms of time, I threw out 'change' because the only way we can actually detect the passage of time is through change. Now to give a nod to Pfhorte and abandon the timeline model and the conceptions it brings with it, could we not say that going back in time would be synonymous with resetting all elements in the world (or whatever space you wish to work in) back to a state so as to negate any change that had happened between then and the present?
Taking out all concepts of blackholes and timewarps, this seems essentially what we're trying to get at, an unaltered state at a point prior to our current state. In that case, does time travel still seem feasible?
Offtopic Q: Why is this thread in paranoia? Seems like it should belong in philosophy.
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That's a good way to look at time. You explained my whole argument about how time is just a differences in events, rather than the way people view it these days. Difference = change, in a way, which is what you said.
However, black holes and worm holes are totally different situations. Since there is something called space-time, which is the difference in events, and since it kind of acts like a blanket spread out through our universe, and is altered by gravity, proven in relativity and physically by looking at a star close to the sun during a solar eclipse, it is 'possible' to travel through time using other means, other than looking at the speed of light.
To me, this case is very far fetched, but I'll explain the idea behind it.
You have two very large objects close to eachother, they are likely orbiting eachother. Lets say these two objects are two supermassive black holes. Since space-time is warped around objects with gravity (like a bowling ball on a matress), it's possible that you can have these two 'warped' space-times meet, and create a whole new space-time. If someone were to pass through that space-time, it would bring them to a new place in space, and a new place in time.
I believe that you can only go backwards in time and that the universe has a universally constant rate in which time moves, and you can not exceed that rate. That rate, in my mind, was defined at the beginning of the big bang, and has been slowing down ever since.
EDIT:
I don't believe that you can go backwards in time. I meant to say that I believe that it's more possible to go backwards in time, rather than going forward in time. Physically, it seems more plausible. Though, I believe that either situation is impossible.
Either way, like i said before, it would seem more feasible to go into the past, rather than the future, given everything I have already said.