In some of his novels - most notably A Fire Upon the Deep (from 1992), he imagines the galaxy as divided into concentric zones, each with different physical laws and limits on intelligence and technology. These are referred to as "Zones of Thought," each affecting the potential for intelligence and technological development.
It's not a perfect match, as I think the new theory refers to relative time based on the density of matter at a given location.
Part of me wonders if this analogous to the "watched pot never boils" issue. Wander into the wilderness to do magic...
Others:
- first bobiverse book (followed by all the rest)
- permutation city (next: diaspora, etc)
- Diamond age (so relevant now with spread of LLMs)
- count to a trillion (A cowboy lawyer mathematician takes enough drugs to invent antimatter tech)