Mental modelThe World, Understood · Day 0
Four countries, two regions each: every grouping was drawn by someone for a purpose, and it lies at its edges.
Share this diagram
Diagrams share as a link — it unfurls with a preview card.
This is one mental model — a course's idea in a single picture. It comes from The World, Understood, a short daily course on Noesa. Anyone can use AI; few can tell when it's wrong.