[MD] Gravity

[Micah]

Bo said -

>Regarding gravity, Einstein's General Relativity has another
>explanation, namely that of a "dents" in the space-time fabric caused
>by the heavenly bodies, no "gravity force" propagating through empty
>space. So the last word is not said on that issue.

I'm confused - dents occur on two dimensional flat surfaces. Is space-time a
two dimensional flat surface?

Micah