Episode Summary
Executive Summary: Steven Pinker argues that violence has declined across history—from pre-state societies to modern times—through six major processes: state pacification, civilizing norms, humanitarian reform, the Long Peace, the New Peace, and rights revolutions. In conversation with Matt Ridley and audience critics, he defends the role of states, trade, empathy, reason, and feminism in reducing violence while cautioning that progress is real but incomplete and reversible in some domains.
Main Topics: The historical decline of violence (Priority: 5/5): Pinker frames violence as a long-run historical trend downward, visible across millennia, centuries, and decades, not as a steady line but as a persistent pattern with setbacks. Pacification and the rise of the state (Priority: 5/5): He argues that centralized states reduced anarchy and tribal feuding by imposing order, making populations more valuable alive than dead for taxation, labor, and soldiers. The civilizing process in Europe (Priority: 5/5): The consolidation of kingdoms, national justice systems, commerce, and transport reduced homicide rates dramatically from medieval levels. Humanitarian revolution (Priority: 5/5): Pinker describes the abolition of torture, cruelty, slavery, witch hunts, dueling, and excessive capital punishment as a rapid moral shift tied to literacy, print, and Enlightenment ideas. The Long Peace and New Peace (Priority: 5/5): He presents evidence that great-power war, interstate war, and eventually civil war have declined since 1945, with democracy, trade, and international institutions helping explain the trend. Rights revolutions and changing norms (Priority: 4/5): He highlights declines in violence toward racial minorities, women, children, homosexuals, and animals, attributing them to expanded rights, empathy, and social change. Debate over causes and reversibility (Priority: 4/5): In Q&A, Pinker addresses objections about torture, religion, abortion, self-esteem, feminism, video games, human nature, and whether peace trends can reverse.
Key Arguments: Violence is not constant; it has declined over long stretches and may now be at historically low levels. Pre-state societies were far more violent than modern states, based on both archaeological trauma and ethnographic death rates. Centralized states reduced violence by suppressing raiding, feuding, and private revenge. The Enlightenment, print culture, and literacy undermined superstition and cruelty, expanding empathy and universalism. The 20th century was not simply the bloodiest in proportionate terms; great-power and interstate war have declined sharply since 1945. Democracy, trade, and international organizations are statistical predictors of peace and helped produce the Long Peace and New Peace. Rights movements reduced violence against marginalized groups and changed what societies tolerate as legitimate harm. Violent human impulses still exist, but stronger institutions, self-control, empathy, and reason increasingly suppress them. Pinker rejects the idea that humans have been biologically purged of violence; instead, social circumstances increasingly favor peaceful motives. Progress is real but incomplete: some trends are ratchet-like, while others such as civil wars and crime could rise again.
Data Points: Prehistoric skeletons with violent trauma: 15% - Average from 21 archaeological estimates of non-state societies Battle deaths in the world in the year 2005: 0.03% - Approximate share of global population dying from battle deaths; described as less than a pixel on the chart Ethnographic war death rate in non-state societies: 524 per 100,000 per year - Average from 27 estimates of tribal/hunter-gatherer societies Battle death rate in the world in the 20th century: 60 per 100,000 per year - Maximal estimate including genocides and man-made famines Battle death rate in the United States in the 20th century: Less than 4 per 100,000 per year - Used as a modern-state comparison against non-state societies Battle death rate in Germany in the 20th century: 160 per 100,000 per year - Includes both World Wars Battle death rate in Russia in the 20th century: 140 per 100,000 per year - Includes World Wars and civil war Battle death rate in Japan in the 20th century: 40 per 100,000 per year - Includes World War II and nuclear bombings Contemporary English homicide risk versus medieval ancestor: 1/35th - Pinker's comparison of homicide rates over time in England Capital offenses in 18th-century England: 222 - Examples included poaching and being in company of gypsies Capital offenses by 1864 in England: 4 - Shows dramatic narrowing of death penalty use Lynching rate in late 19th-century US: About 150 per year - Declined to zero by 1950 Estimated rape rate decline since early 1970s: 80% decrease - Attributed to women’s rights and changing norms IQ gains in the 20th century: 3 points per decade - Flynn effect cited as evidence of rising abstract reasoning Women’s self-reported homicidal fantasies: 15% frequently; more than 60% occasionally - Used to argue violent impulses remain part of human nature Men’s self-reported homicidal fantasies: One-third frequently; three-quarters occasionally - Used to challenge claims that violence has been bred out of humans Slavery abolition milestone: 1980 in Mauritania - Marked the first time slavery was illegal everywhere on Earth European countries with active executions: Declined before legal abolition - Demonstrates that practice ended socially before it ended legally
Pivotal Quotes: "Hobbes was right, Rousseau was wrong." — Steven Pinker: On violence in pre-state societies, comparing archaeological and ethnographic evidence "Those who can make you believe absurdities can make you commit atrocities." — Voltaire (quoted by Pinker): On the role of superstition, ideology, and literacy in enabling cruelty "We should ask why is there peace?" — Steven Pinker: On shifting from a doom-focused mindset to an empirical study of decline
Implications: Pinker’s case suggests that peace is not accidental: institutions, trade, education, and rights can reduce violence further. For listeners, the lesson is to measure progress accurately, defend liberal modernity, and identify the mechanisms that make restraint and cooperation more likely.