“observers — you, me, and anyone else — live in a quantum gravitational universe and come up with "a globally agreed-upon cognitive model" of reality by exchanging information about the properties of spacetime”

Seems ripe for a sci fi concept: if the coherent conscious model of observers was able to shape the universe (rather than merely observe some “objective” truth about it), conceivably a society that believed in the daily intervention of gods could actually see that happen (not merely interpret it as such) in a way we might consider inconsistent with our understanding of physics. You just need faith as they say.

In retrospect, that concept has perhaps already been executed in Gaiman’s American Gods.