The post apocalyptic-type civilization can only last so long, though. I base my hypothesis on the Bronze Age collapse, where a bunch of fairly complex civilizat

The post apocalyptic-type civilization can only last so long, though. I base my hypothesis on the Bronze Age collapse, where a bunch of fairly complex civilizations all went back to approximately the Stone Age in the span of 50 years or so. Advanced civilizations live on supply chains and are (as was demonstrated by the pandemic) actually pretty brittle. So I think the path back home to the Stone Age will go, as Hemingway said, “gradually, then suddenly.”