Arijharn wrote...
You are probably going to completely dismiss my statement but I feel it must be said: Once, the world was perceived to be flat. What I'm trying to say (weakly?) is that our present understanding of how the universe presently works is limited by our present understanding.
I am not "dismissing" your statement, but I don't think you really understand just how fundamental the speed of light in a vacuum is to the structure of the universe. We aren't talking about some 'misundersting' or failure of geometry, and honestly your flat earth analogy falls flat. Even in the Dark Ages, educated people knew the world was round, and have since about 2000 BC. The Greeks even came within a couple hundred miles of correctly estimating the diameter of the earth!
No, the speed of light and it's fundamental nature as a unversal constant that defines space-time has been repeated tested both in Astrophysics and in earthly laboratories
extensively and under the most extreme conditions for almost a century now. Einstein's Theory of General Relativity has passed the experimental test with flying colors every single time.
It is an observed FACT that you can not exceed the speed of light in a vacuum locally. It can not be done. It can not be done not because of some technical reason, but because space itself only connects to itself at the speed of light in a vacuum (best I can explain this without the math).
The reason that you can hypothetically bypass the speed of light using a closed-timelike-conduit is because you bypass the very structure of space itself, but you STILL have the vexing causal problems.
Look guy, take a course in Vector Algebra and then a course on Modern Physics with the math. If that doesn't convince you of the absolutely fundamental nature of the speed of light, then nothing will.
Trying to go faster than the speed of light in a vacuum is like trying to go north of the north pole. It's not a limit of understanding but rather a fundamental limit imposed by the very definition of a globe (or in the case of the speed of light by the very DEFINITION of space and time).
-Polaris