It’s more like “matter tells spacetime how to curve, spacetime tells matter how to move”.

Which means the universe is really just spacetime arguing with itself.

Brilliant synopsis. Kudos!

It's a famous quote from John Wheeler.

Ah. TIL.

Well from what I’ve read the observable universe is fairly flat, but I was wondering what if we’re just living in a basin or on a plateau that extends beyond our observable reach?

I suck at math though so I’ll just wait for theoretical astrophysicists to tell me interesting things on blogs.

Then we can all say we live "in the Valley"!

We all live in the valley on this blessed day

Estimates set the lower bound at 250x the size of the observable universe, according to the limits of measurement of the "flatness" of our local space. https://arxiv.org/abs/1101.5476

I’ve always pondered a mobius strip with a river-like motion .

Would that be a mobius strip of universes? That makes me think of the central finite curve from Rick and Morty.