Originally Posted By: kallog
Just do the twin paradox!
Well, yes; although the twin paradox is defunct in the light of experiment results. Not that I have a deep insight into why one twin moves through time faster than the other. Acceleration, sure. Inertial frames, sure. But why? - Oh to be a mathematician versed in tensor calculus! At least I could confidently kid myself that I understood it all.

"Time is what prevents everything from happening at once" - John Wheeler