Book Review: Peter Turchin – War and Peace and War

Then you might get something like Peter Turchin’s War and Peace and War, which I’ve finally read on the recommendations of Kolya and TG. Ranging from Ermak’s subjugation of the Sibir Khanate to the rise of Rome, Turchin makes the case that the rise and fall of empires is reducible to three basic concepts: 1) Asabiya – social cohesiveness and capacity for collective action, 2) Malthusian dynamics – the tendency for population to outgrow the carrying capacity, and 3) the “Matthew Principle” – the tendency for inequality and social stratification to increase over time. The interplay between these three forces produces the historical patterns of imperial rise and fall, of war and peace and war, that were summarized by Thomas Fenne in 1590 thus:

Warre bringeth ruine, ruine bringeth poverty, poverty procureth peace, and peace in time increaseth riches, riches causeth statelinesse, statelinesse increaseth envie, envie in the end procureth deadly malice, mortall malice proclaimeth open warre and bataille, and from warre again as before is rehearsed.

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Cliodynamics: Mathematizing History

One of the most interesting emerging sciences today, in my opinion, is cliodynamics. Their practitioners attempt to come to with mathematical models of history to explain “big history” – things like the rise of empires, social discontent, civil wars, and state collapse. To the casual observer history may appear to be chaotic and fathomless, devoid of any overreaching pattern or logic, and consequently the future is even more so (because “the past is all we have”).

This state of affairs, however, is slowly ebbing away. Of course, from the earliest times, civilizational theorists like Ibn Khaldun, Oswald Spengler and Arnold Toynbee dreamed of rationalizing history, and their efforts were expounded upon by thinkers like Nikolai Kondratiev, Fernand Braudel, Joseph Schumpeter, and Heinz von Foerster. However, it is only with the newest crop of pioneers like Andrei Korotayev, Sergey Nefedov, and Peter Turchin that a true, rigorous mathematized history is coming into being – a discipline recently christened cliodynamics.

As an introduction to this fascinating area of research, I will summarize, review, and run an active commentary on one of the most comprehensive and theoretical books on cliodynamics: Introduction to Social Macrodynamics by Korotayev et al (it’s quite rare, as there’s only a single copy of it in the entire UC library system). The key insight is that world demographic / economic history can be modeled to a high degree of accuracy by just three basic trends: hyperbolic / exponential, cyclical, and stochastic.

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