En ello residía la belleza de la especulación. - Kip S. Thorne

In 2014, the Earth’s gravity is weakest in southern India (blue spot) and strongest in Iceland and Indonesia (red spots).

First, a weird claim: Black holes are made from warped space and warped time. Nothing else — no matter whatsoever.

Warping begets warping in a nonlinear, self-bootstrapping manner. This is a fundamental feature of Einstein’s relativistic laws, and so different from everyday experience. It’s somewhat like a hypothetical science-fiction character who goes backward in time and gives birth to herself.