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I was thinking, what if there was a way to measure the occurance of an event in a distance with something faster than the speed of light, then SR would be incorrect, wouldn't it??
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Yes. Either that or incomplete -- the general ability to communicate faster than light leads to time travel (of information at least) under SR.
I find Light Cones help understanding relativity.
Divide the universe into 3 pieces.
The "past", which consists of time/space locations from which photons could have reached you.
The "future", which consists of time/space locations from which photons you could emit can reach.
And "elsewhere", which consists of the rest of the universe.
This can be described with 'light cone' diagrams. Here are two:
http://physics.syr.edu/courses/modules/LIGHTCONE/
http://en.wikipedia.org/wiki/Light_cones
If two things are "elsewhere" to each other, then they are unordered in time. Which comes first is a matter of frame of reference.