: : : : : Wouldn't it make sense that we could go beyond the speed of : : : : : light??? The classic example: Theoretically-- If you were : : : : : on a train going the speed of light, if a train could go the : : : : : speed of light, and you took a step forward, you would be : : : : : traveling faster than the speed of light... Wouldn't that make sense?

: : : : Roger, you can't think of the question in those terms, because (1) The train could never go at the speed of light, and (2) As you approach the speed of light, your inertia approaches infinity, so it would take an infinite amount of energy to take that incremental step forward.

: : : : you can't reach the speed of light because as we approached it time would slow down and it could keep slowing down idefinitely so we could never reach the speed of light.