We should all be concerned when we see dimple and vortex in the same sentence.
Ah..... the space continuum trampoline: Thereby proving AFTER ALL that the earth is not spherical, but flat just like we knew all along! The earth is like a printed pattermn ON the trampoline and when you reach the edge, you simply transition to the other side. Falling off is too hard.
I also found gravity in Veronika Zenovas dimple., so don't take any of this too seriously!