ideasthesia

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Ryan Collison

I write about cool science and share it here.

Elite coordination network transforming from integrated cooperation to fragmented competition

Elite Dynamics and Coherence: Why Leadership Classes Matter

Series: Cliodynamics | Part: 7 of 10 Elites are not the enemy. Elite competition is. This distinction matters. Every complex society has elites—people who control significant resources, hold political power, or possess high status. This is structural, not moral. Complex societies require coordination, and coordination requires coordination capacity, which concentrates

Shared cultural narrative fragmenting into incompatible isolated regions

Narrative Fragmentation: When Cultures Lose Their Shared Stories

Series: Cliodynamics | Part: 6 of 10 A society isn’t just a collection of people sharing territory. It’s a collection of people sharing stories—about who they are, where they came from, what they value, where they’re going. These narratives aren’t decorative. They’re structural. They coordinate

Civilization-scale coherence manifold transforming from smooth integration to fragmented crisis

Curvature at Civilization Scale: Translating Cliodynamics to Coherence Geometry

Series: Cliodynamics | Part: 5 of 10 Turchin describes societies as integrating and disintegrating. He tracks rising and falling social cohesion. He measures when systems move cooperatively versus fragmenting into competing factions. He quantifies the transition from stability to crisis. These aren’t just metaphors. They’re descriptions of geometric properties.

Two American secular cycles overlapping with current disintegrative phase glowing hot

The Age of Discord: Turchin's Analysis of Contemporary America

Series: Cliodynamics | Part: 4 of 10 In 2010, Peter Turchin published a brief commentary in Nature predicting that the 2020s would be a period of severe political instability in the United States. He wasn’t guessing. He was reading the structural-demographic indicators the same way a seismologist reads strain

Dense competition visualized as many trajectories converging toward limited attractor points

Elite Overproduction: When Too Many People Want to Run Things

Series: Cliodynamics | Part: 3 of 10 In 1789, France had more lawyers than the entire judicial system could employ. Thousands of credentialed, educated, ambitious men had been trained for positions that didn’t exist. They couldn’t get the offices they’d been promised, the incomes they expected, the status

Secular cycle waveform showing integration, peak, crisis, and depression phases repeating across deep time

The Secular Cycle: Why Societies Rise and Fall Every 200-300 Years

Series: Cliodynamics | Part: 2 of 10 History doesn’t repeat, but it rhymes. Every civilization that’s left sufficient records shows a pattern: a couple centuries of growth and integration, a peak, then disintegration into crisis. Turchin and his colleagues didn’t discover this pattern—historians from Ibn Khaldun to

Historical secular cycle visualized as vast waveform spanning centuries with integrative and disintegrative phases

The Mathematician Who Predicted 2020: Peter Turchin and the Science of History

Series: Cliodynamics | Part: 1 of 10 In 2010, a mathematical biologist named Peter Turchin made a prediction that would seem absurd if it hadn’t been so precise: American society would experience a major political crisis around 2020. Not because of a pandemic (though that accelerated the timeline). Not because