Quote:
Originally posted by CET
Let's not get TOO deep into this, because over examination of this stuff can give me a headache.
We can use the concept of superpositions from quantum physics. Whenever there is a choice, an alternate universe is created for each possible choice. We have to determine which universe we are in by determining which choice was made. If we are visited by an individual from the future, we have a superposition where an alternate universe is created. The universe we exist in is the one where that individual made the trip and if he does anything that changes the future then our time line is altered appropriately.
This brings up the idea of predestination. Is his universe already existant and dependant on the changes the time traveler made? Then he was destined to make that trip and do that thing, therefore there is no freewill. If he is not destined to do what he did, then his timeline changes and we do have freewill. He may or may not be directly affected by the change. If he is, then he ceases to exist in our time, which creates a paradox. We are back at not having freewill and we are stuck with predestination.
This may be one of the philosophical reasons that it is said that time travel is not possible. It would be too easy to create paradoxes and the laws of physics cannot live in contradiction to themselves, because that would break the logical law of non-contradiction.
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Great post
I think the Laws of Physics do not exclude physical time travel.
It was recently proven that time and space do indeed bend or warp near large masses using a couple lasers in space.
I also think that free will and infinite possibilities can co exist.
Please do not reply, I only have four tylenol left
edit: I believed Titor right up until I found out he DIDN'T use a De Lorean, now that is just TOO far fetched