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Luke's avatar

There's a recent BBS article about the evolution of peace in humans focusing on the factors required before our species could create peace and speculating when it might have occurred: The evolution of peace. Behavioral and Brain Sciences. 2024;47:e1. doi:10.1017/S0140525X22002862

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Martin's avatar

Dr Turchin, you may be 'Profesor Doom' to the media class in their bubble who thought everything was fine until very recently; but to those of us in the working classes who can feel everything breaking and want the people running things to do a better job, it's quite the opposite: you actually bring hope.

I especially appreciate the effort you go to to bracket your own politics in order to follow the models and the data wherever they take you. I know that is hard and few academics are willing to do that these days.

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Peter Turchin's avatar

Thank you!

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M. E. Rothwell's avatar

It’s interesting the Chalcolithic spike in violence is simultaneous in the Middle East with urbanisation, as the first cities began appearing at Eridu, Uruk, and Tell Brak. Do you think the increased violence was either a cause of or a driver of urbanisation?

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Peter Turchin's avatar

As I argue in my book Ultrasociety, the first function of cities was protection. So cities and states evolved together under the selection pressure of more intense warfare.

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M. E. Rothwell's avatar

I shall go buy the book!

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Ginger Griffin's avatar

Excellent summary that mentions one of my favorite books: _War Before Civilization _ by Lawrence Keeley. Available at Internet Archives, BTW. The optimistic take is welcome, but what about nuclear weapons? They might make the current cycle our last. I sincerely hope not. But remember that we got very lucky during the Cold War. The US and the Soviet Union arrived at a relatively stable understanding. What will happen as nukes (probably) proliferate during the 21st century?

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Tris's avatar

I kept in mind something roughly like that :

20 to 25% of probability to die of (human related) violent death in hunters-gathers societies (but as you said, it might vary a lot depending on the period), something like 5% during the Roman Empire, more than 10% during medieval times with a trend toward less than 1 or 2% in European modern states (despite the 2 world wars !).

Which tend to illustrate how much we are actually sheltered from violence in our societies. And how much we have to loose.

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Ernst Zahrava's avatar

I wonder where the tribute came from?

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Luke's avatar

I don't think there is much reliable empirical support for this claim: "Additionally, we know that most humans are averse to violence, and it takes training and combat experience to turn them into killers." The data from SLA Marshall are notoriously unreliable, likely little more than made up. Perhaps more importantly, there's a huge discontinuity between state level war and the small scale violence in band and tribal societies.

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Roger Cooper's avatar

What I have observed is that external wars (and large internal wars) tend to occur clusters. Often one war further destabilizes the area leading other wars. Some examples.

Dissolution of the Soviet Union (Itself partially caused by the Soviet Invasion of Afghanistan)

Chechen Wars

Civil Wars in a number of Central Asia states.

Nargorno-Karabakh Wars

Soviet invasion of Georgia

Soviet Invasion of Ukraine (main cause of the recent increase in war deaths)

Collapse of the Qing Dynasty

Opium Wars

Taiping Rebellion

1st Sino-Japanese War

Russo-Japanese War

Great Plains War

Northern Expedition

2nd Sino-Japanese War

Pacific War

Chinese Civil War

Korean War

Vietnam War

Ussuri River Incident

Overthrow of Khmer Rouge

Sino-Vietnamese War

Note the abrupt end of interstate conflict in East Asia in 1979

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Ernst Zahrava's avatar

Good observation. There is only one note here: "Soviet invasion of Georgia

Soviet Invasion of Ukraine (main cause of the recent increase in war deaths)" :-)

What kind of soviet invasions after dissolution of the Soviet Union?

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Simon Pearce's avatar

The relationship between intrastate and interstate warfare is interesting here. In the case of intrastate warfare the ratio of perimeter to area is presumably moot, so large empires will have much more to lose in civil war than external warfare so long as external warfare can be contained to peripheral areas (debatable under some modern contexts, but still seems to hold up under others). This creates an interesting potential dynamic: save lives and institutional stability by deliberately externalizing violence. Pursue external warfare as policy to prevent civil war from breaking out. This is one thesis that Zeihan has explicitly put forward as an option / risk for China in the coming decade. China is surely not alone here.

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the long warred's avatar

“The small proportion who were intrinsically capable of lethal violence (e.g., sociopaths)” -

Are you sure this is a valid bedrock assumption about humanity then or now? I am not.

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Allan Groves's avatar

It's unfortunate that the history of warfare begins in 1946, after the most violent decades of war in possibly centuries. The omission doesn't alter the point being made and it does highlight the civil wars in Asia in the 1940s, but still, for us Eurocentric types, seems a big omission.

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Randall Hayes's avatar

Assuming our latest military revolution (nuclear weapons) continue to be tightly controlled by governments interested in self-preservation.

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David Lentz's avatar

What I find weird is school shootings in America

It’s not a thing in other countries

And it’s always young white males

Shooting children

It’s bizarre

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David Lentz's avatar

Well nice to have some happy talk

I feel Pinker is a propagandist

Selects the data that suits his argument ignores the rest

Just my humble opinion

Everything is wonderful when your part of a team is his positivism thesis

So guess he is a positivist

Thought that philosophy had died off

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Ananisapta's avatar

This too shall pass... FROM YOUR MOUTH TO GOD'S EAR!

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