PS Om USAs kollaps kan man läsa här: https://peterturchin.com/books/end-times/, eller om man så vill en recension på https://www.theguardian.com/books/2023/may/28/end-times-by-peter-turchin-review-elites-counter-elites-and-path-of-political-disintegration-can-we-identify-cyclical-trends-in-narrative-of-human-hope-and-failure