*que twilight zone music*

didn't we touch this subject recently..

i have my thoughts, but am in a rush this morning.. i look forward to the replies though.. this is immensely more to my liking than .. well anywho's

If time travel were possible wouldn't WWI, WWII or any other major war have been averted/changed?

Or has it been already, how would we know?

Traveling foraward is completly possible. you do not have to travel at the speed of light, merely at a significant fraction of c. it's called the twins paradox...

Time is not simply a man-made concept. in fact, it is thought that time and space are effectivly the same thing, and possibly that they are both qunatized much like energy, momentum...ect. I do not know the particulars of relativity, quantum-loop gravity, string theory, or any similar cosmological theory which might apply to this topic. However, I have heard theories that backwards time-trevel might be possible through a whormhole. since this is effectivly a connection between two points in space-time it ought to be possible to connect any two arbatraty points. this is the only theoreticaly reputable theory for backewards time travel I have ever encountered.

The paradox Monqui brings up is one I have often considered. I believe that it would be impossible to go back in time for any specific purpose. say I wanted to go back in time and kill Hitler in 1920 when he was probably still recovering form his service in WWI. I could conciveably do that, but once I had, where would the motivation be for my going back in the first place? after all, if WWII never happend, if I hjad never heard of Adolf Hitler, I couldn't very well have the motivation to go back in time and kill him could I?

this situation creates an infinite loop. who knows, myabe if someone does this it destroys the universe Maybe we are all cought in a cyclical loop of this sort. eseentialy there is no way to say what would happen.

only if it's possibility has been written into the program.

haha. the old debate of \"information\" ... what is information?

heres another paradoxx, which involves travelling into the future (seeing as going back to the past is, proven beyond reasonable doubt, impossible) -

A proffessor builds a time machine in the year 2005, and decides to go forward (no problem here) to 2010. When he arrives, he seeks out the university library and browses through the current journals. In the mathematics section he notices a splendid new theorem, and jots down the details. Then he returns to 2005, (by going back along the wormhole he created in 2005. travelling \"back\" in time is only possible [at least, using the wormhole theorem, which is one of the best theories for travelling forward - problem is it needs about as much energy as there is in the universe to keep it open for 5 years ] after the wormhole has been built, ie if he build the wormhole in 2005 he cant go back further than that.) summons a clever student, and outlines the theorem. The student goes away, tidies up the arguement, writes a paper, and publishes it in a mathematics journal. It was, of course, in this very journal that the professor read the paper in 2010.

This isn\'t strictly a paradoxx, but more a really weird state of affairs. The problem isn\'t of time resolving itself (with the grandpa paradoxx) but there is one problem.

WHERE DID THE INFORMATION COME FROM??

Well, I remember reading that he said there are an infinite amount of worldlines. He has traveled back on a different one then his but very similar to the oringal with the exceptions of like some books note getting published etc. So it really wouldn't matter if you were to kill your grandfather. He also mentions in some IRC logs that he is staying with his parents and "him" at age 2.