Yep..

If the universe was to contract, everything would collide..

But our neighboring galaxy "Andromeda" is heading towards the milky way at 250,000MPH as we speak :)

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.

My head hurts

I think one could argue back and forth about it and achieve nothing. Good points though :winkwink:

I warned you! :winkwink:

Great post :thumbsup


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 :winkwink:


edit: I believed Titor right up until I found out he DIDN'T use a De Lorean, now that is just TOO far fetched

WOW! maybe he DID mess up the "timeline".
Go a LONG ways towards explaining some of the people & their posts on gfy! :1orglaugh

You just seriously messed up a large segment of the gfy population who just grabbed their bowl and said "Oh wow man. I think I understand!"

Their therapy bill is going to be heavy duty! :1orglaugh

quote:
Titor claimed to be a serving soldier who was recruited to a governmental time travel project. He was supposedly sent from 2036 back to 1975 to retrieve an IBM 5100 computer which he claimed was needed to overcome a Unix bug - Unix-based machines would no longer function after 2038 - a known bug related to the 32-bit nature of the Unix clock.

This is referring to the Epoch bug, which is set to hit UNIX around 2038 will it be an event? or the next Y2k is unknown.

http://www.2038.org

time travel is possible you just have to treat it as the 4th dimension but you could only travel back to when a time machine existed and nothing before that

i think what Titor was saying was that going back in time was no problem at all. Paradoxes don't and can't exist. For example, if you went back in time and killed your father before you were born, nothing would happen because you are existing in another timeline. in YOUR timeline, your father is still alive. His time travelling operates on the theory that every single possible outcome in the world has happened and is happening at this moment. In one timeline, i'm not writing this. Instead i'm whacking off or something. and so on and so on. Its much like that tv show "sliders". If i was go to back in time right now, then i would be in the timeline where i went back in time. At the same time, another timeline exists where i didn't go back in time. get it? good :D

50 timetravelers