I've just been through about an hours lecture on the theories of time travel and it just bores me so much [zz)] they all talk about how time travel could become real in about 50 years time through the use of general relativity and i honestly couldnt stop laughing. now im not saying that im anti-science on this subject but not once have they related it to quantum mechanics. now because general relativity states that the faster you move the slower time passes, scientists take this to the extremes and say that to time travel you have to move close to the speed of light (299,792,458 meters per second (in a vacuum obviously)) and the speed of light depends on the material that light moves through. but theres one simple point that they havent discussed and thats on a sub-atomic scale (quantum mechanical). now you all have to do a little exercise - As you all know,everything is made of molecules and cells. (duh) now imagine the room you are sitting in just now on a molecular level. your computer's molecules,the walls molecules and your molecules are all present. now if you took a quantum picture of a single second in time which en-captured the entire room on a molecular level, every molecule would be set for only a second (in your picture)then by the next second it would be differed. now the next year you decided you wanted to travel back in time to the exact second a year before (which is when you took the picture). now if scientists used general relativity to speed you up to the speed of light (which isnt physically or theoretically possible) then theres no exact known effects. you could basically end up anywhere or anyplace so the only way in which you could REALLY get back to that exact second a year ago was to re-create the picture you took. they would have to process EVERY molecule in the room from scratch then find somewhere to put this picture. now theres trillions upon billions of molecules in this one room so that is a feat upon itself. p.s the picture im talking about is a metaphorical term for a state in time. also, when you start to think more about the barriers in travelling back in time in this sense, you realise how impossible it is. now i know my little exercise was a pile of metaphorical cack so you dont have to tell me. im just trying to get you to understand a different way in which space-time operates. if you want the dynamics then talk to someone else with a week spare to tell you but i have better things to do. so what do you guys (and galls) think about time-travel through quantum and relativistic means. i want your opinions on time travel and if you think its a possibility or something that should just stay attached to the sci-fi movies of hollywood?