>> Time Is Not Absolute :an interactive presentation that supports the need for observed timing as a result of modern revisions of the idea of time... for as Albert Einstein pointed out, there was an unsuspected difficulty in the then prevailing idea of time... which forced him to conclude that time depends on the observer in a way not previously imagined, and most recently of all, some ponderings about whether the speed of light is really constant or not >>
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// c's the day //
I read an interesting theory somewhere. (I believe it was in The Elegant Universe, a wonderful book about string theory). The idea is that everything is moving at the speed of light through time-space (known as C, the constant). This explains time dilation at extreme (relative, of course) speeds. The faster you move through space, the slower you move through time, such that it all adds up to c.
On the other hand, according to Richard Feynmann, C is merely an average and therefore some photons do travel faster than C. (You might try to argue this, but I read it in The Strange Theory of Light & Matter, in case anyone's interested).