this post was submitted on 04 Jul 2025
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submitted 1 month ago by daydrinkingchickadee@lemmy.ml to c/memes@lemmy.ml
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[โ€“] daydrinkingchickadee@lemmy.ml -1 points 1 month ago (1 children)

It's not just Glubb. The Changing World Order by Ray Dalio also arrives at the 250 year number.

[โ€“] daydrinkingchickadee@lemmy.ml -2 points 1 month ago

Cliodynamics and Structural-Demographic Theory suggests cycles of 200-300 years as well.