I'm going to have to track this guy's book down. Subject looks interesting, and the nature article leaves some information lacking, sadly. For instance, Turchi

I'm going to have to track this guy's book down. Subject looks interesting, and the nature article leaves some information lacking, sadly. For instance, Turchin mentions seeing this pattern in Ancient Rome and Egpyt (past and present) but he doesn't explain how he accounts for the Middle Ages and European colonial expansion. Arguably the number of "violent" events during those periods would be concentrated to the point of potentially breaking the father-son-grandson model he advocates. The chart in Nature leaves out things like the Reconquista of Spain, Ghengis Khan and heirs marching into Europe, the Crusades, the 50 years war, the French Revolution, and numerous other major upheaval events that occurred in smaller windows than those 50 year cycles he claims. I guess I want to know what happens when you add in those time frames missing from his graph. Does it show the amount of "conflict" in the world decreasing with time as civilization (our understanding of it) expands around the world?