Back to all summaries

#game theory

2 summaries

The Prisoner's Dilemma: How the Mathematics of Cooperation Shapes Everything from Nuclear War to Cosmic Destiny

The Prisoner's Dilemma β€” game theory's most influential problem β€” reveals why rational individuals repeatedly choose outcomes that harm everyone, from nuclear arms races to antibiotic resistance to climate change. Through Robert Axelrod's landmark computer tournaments, the biology of vampire bats and cleaner fish, and the evolutionary history of life itself, this exploration shows how cooperation emerges, why it succeeds, and what destroys it. Ultimately, the mathematics of reciprocity and the "shadow of the future" may determine not just humanity's survival, but whether intelligent life can scale from tribal cooperation to a Type III Kardashev civilization β€” and why the Great Filter separating silent galaxies from thriving ones may be, at its core, a cooperation filter.

Homo DeusπŸ‡¬πŸ‡§πŸ‡΅πŸ‡±πŸ‡·πŸ‡ΊπŸ‡ΊπŸ‡¦

The Equation That Changed Finance: How Physicists Cracked the Market

This post traces the surprising scientific lineage of modern finance, from Louis Bachelier's random walk theory and Einstein's work on Brownian motion to Ed Thorp's card counting and the Black-Scholes-Merton equation that launched the derivatives boom. It explains how options work, why stock prices behave like balls falling through a Galton board, and how dynamic hedging lets traders manufacture near-riskless portfolios. It also examines the trillion-dollar markets that grew from a single formula, their role in both providing liquidity and amplifying crashes, and how Jim Simons' Medallion Fund used hidden Markov models and machine learning to beat the market for decades. The story ends with a paradox: the more patterns we find and trade away, the closer markets come to pure randomness.

Vert DiderπŸ‡¬πŸ‡§πŸ‡΅πŸ‡±πŸ‡·πŸ‡ΊπŸ‡ΊπŸ‡¦