1st of all what the the topic creator is writing about is probaby the leading edge of hard core science atm, not time but time travel, dimensionality and how it relates to the rest of the Universe. I can tell you what the facts are but for a deeper understanding please go to
http://mist.npl.washington.edu/AV/#6. this site rules btw, dont tell everyone
. Yeah time isnt linear in the sense it goes forward only and time travel, actually going into the past or future, is BANNED by nature in our universe. Time is a dimension, like the 3 space ones but its more than a frame of reference. time and space seem to be the fabric of everything placed upon absolutely nothing and upon which everything can exist. Like a fabric too time isnt linear but rather all times currently exist somewhere (Past present and future are directions we know of btw in the time dimension) objects can move through time, like space and no direction of time is favoured by our universe. When dealing with something as unfimiliar as a spatial plane called time lets forget our preconceptions and ridiculouse hollywood ideas. If a plane crashes it stays crashed in this universe thats a fact, but more than time has to be considered their so be careful. If you have 2 objects, lets say 2 green balls, and they collide to give a big red ball, now elsewhere a big red ball explodes and gives 2 green balls, science says that these experiments (as long as they are reversible) cannot be distinguished one from the other, basiclly what this means after heaps of mumbo jumbo is that at a basic level,1 reaction viewed forwards in time and another reaction back in time that look identical ARE identical. Also like space, time can be curved, especially near black holes
. Albert Einsteins theory of special relativity has been tested, 2 atomic clocks set to run exactly the same were build. one was placed in a university somewhere and the other was whisked away on a round the world trip, very fast. when the two clocks were tested one was found to be out by a few millionths of a second or something, this was an astonishing difference for atomic clock (they say) and proved time curved as ur speed increased. now although time isnt linear, runs weird for others and can even be stated to run backwords in some conditions, WE CANNOT TRAVEL THROUGH IT. The whole universe, time included is likea huge mesh constantly moving and changing, expanding cooling, with supernova and matter antimatter annihilations etc. its crazy stuff
theory predicts that in the event of a time loop like above the whole universe would 'rearrange itself' but time isnt like a loop, more a net (as i see it) so u wouldnt get stuck forever in some horrific universe catastrophe but simply spacetime would work the 'knot' out of itself somehow (u might die, time traveler i dunno
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