From the Vault: The Devil You Know, Part 1
Sep 24, 2026 · 52m
Summary
Hosts Robert Lamb and Joe McCormick explore ambiguity aversion, the psychological preference for known risks over unknown ones, using Daniel Ellsberg’s 1961 "three-color urn" thought experiment to illustrate the Ellsberg Paradox. They discuss how this cognitive bias undermines standard economic models of rational decision-making and examine its real-world applications, particularly in the context of nuclear strategy. The episode also analyzes "Madman Theory," a political tactic that exploits an opponent’s fear of unpredictability to gain leverage, while critiquing its long-term instability …
Topics discussed
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Introduction: Devil You Know Part 1
Defining Ambiguity Aversion
Cultural Proverbs on Known vs Unknown Risks
Ambiguity vs Chaos and Personal Anecdotes
Academic Sources on Ambiguity Aversion
Daniel Ellsberg and the Pentagon Papers
Ellsberg's Activism and Nuclear Weapons
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The Ellsberg Paradox: Urn Experiment
Critique of Expected Utility Theory
Frank Knight's Risk vs Uncertainty
Empirical Evidence and Robustness of Aversion
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Nixon's Madman Theory and Nuclear Deterrence
Exploiting Ambiguity in Negotiations
Criticisms and Costs of Madman Strategy
Domestic Costs and Long-term Stability
Rationality vs Bias in Decision Making
Outro and Sponsors: Pilot Pen
Listener Story: Betrayed by Bill
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