Blogs Stone Age Brain | Rick Shenkman New Study: The world's a lot more violent than reportedMay 30, 2015
New Study: The world's a lot more violent than reported
tags: violence,Nassim Taleb
It has a dreary name: "On the tail risk of violent conflict and its underestimation." But this new paper by social scientists Pasquale Cirillo and Nassim Nicholas Taleb could rewrite the history of violence.
It takes direct aim at the thesis of Harvard evolutionary psychologist Steven Pinker in the 2011 bestseller, The Better Angels of Our Nature: Why Violence Has Declined. The paper's already making waves. On his Twitter page Harvard's Niall Ferguson calls it "hugely important."
In the paper Taleb, the author of The Black Swan, the blockbuster book that alerted economists to the importance of unexpected events, argues that "Violence is much more severe than it seems from conventional analyses and the prevailing 'long peace' theory which claims that violence has declined."
Contrary to current discussions, all statistical pictures thus obtained show that 1) the risk of violent conflict has not been decreasing, but is rather underestimated by techniques relying on naive year-on-year changes in the mean, or using sample mean as an estimator of the true mean of an extremely fat-tailed phenomenon; 2) armed conflicts have memoryless inter-arrival times, thus incompatible with the idea of a time trend. Our analysis uses 1) raw data, as recorded and estimated by historians; 2) a naive transformation, used by certain historians and sociologists, which rescales past conflicts and casualties with respect to the actual population; 3) more importantly, a log transformation to account for the fact that the number of casualties in a conflict cannot be larger than the world population.
The authors base their article on the methods of extreme value theory.
A striking chart accompanying the article dramatically shows the impact of violence on all periods of recorded history. The chart measures conflicts featuring more than 50,000 deaths relative to today's world population. (Thus, 50,000 deaths today = 5,000 deaths in the eighteenth century.)
What's An Lushan? Here's Wikipedia's explanation: "The An Lushan Rebellion was a devastating rebellion against the Tang Dynasty of China. The rebellion overtly began on 16 December 755, when general An Lushan declared himself emperor in Northern China, thus establishing a rival Yan Dynasty, and ended when Yan fell on 17 February 763 (although the effects lasted past this)."
comments powered by Disqus
- The Debt Ceiling Law is now a Tool of Partisan Political Power; Abolish It
- Amitai Etzioni, Theorist of Communitarianism, Dies at 94
- Kagan, Sotomayor Join SCOTUS Cons in Sticking it to Unions
- New Evidence: Rehnquist Pretty Much OK with Plessy v. Ferguson
- Ohio Unions Link Academic Freedom and the Freedom to Strike
- First Round of Obama Administration Oral Histories Focus on Political Fault Lines and Policy Tradeoffs
- The Tulsa Race Massacre was an Attack on Black People; Rebuilding Policies were an Attack on Black Wealth
- British Universities are Researching Ties to Slavery. Conservative Alumni Say "Enough"
- Martha Hodes Reconstructs Her Memory of a 1970 Hijacking
- Jeremi Suri: Texas Higher Ed Conflict "Doesn't Have to Be This Way"
- New transcript of Ayn Rand at West Point in 1974 shows she claimed “savage" Indians had no right to live here just because they were born here
- The Mexican War Suggests Ukraine May End Up Conceding Crimea. World War I Suggests the Price May Be Tragic if it Doesn't
- The Vietnam War Crimes You Never Heard Of