YANSS 314 – How not to fall prey to proportionality bias (and other ways to form a healthy relationship with chaos)

In this episode we sit down with Brian Klaas, author of Fluke, and get into the existential lessons and grander meaning for a life well-lived (once one finally accepts the power and influence of randomness, chaos, and chance). In addition, we learn not to fall prey to proportionality bias – the tendency for human brains to assume big, historical, or massively impactful events must have had big causes and/or complex machinations underlying their grand outcomes. It’s one of the cognitive biases that most contributes to conspiratorial thinking and grand conspiracy theories, one that leads to an assumption that there must be something more going on when big, often unlikely, events make the evening news. Yet, as Brian explains, events big and small are often the result of random inputs in complex systems interacting in ways that are difficult to predict.

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Official Description of the Book:

In the perspective-altering tradition of Malcolm Gladwell’s The Tipping Point and Nassim Nicholas Taleb’s The Black Swan comes a provocative challenge to how we think our world works—and why small, chance events can divert our lives and change everything, by social scientist and Atlantic writer Brian Klaas.

In Fluke, myth-shattering social scientist Brian Klaas deep-dives into the phenomenon of randomness, dismantling our neat and tidy storybook version of events to reveal a reality far wilder and more fascinating than we’ve dared to consider. The bewildering truth is that but for a few incidental changes, our lives – and our societies – would be radically different.

If you could rewind your life to the very beginning and then press play, would everything turn out the same? Or could making an accidental phone call or missing an exit off the highway change not just your life, but history itself? And would you remain blind to the radically different possible world you unknowingly left behind?

Offering an entirely new lens, Fluke explores how our world really works, driven by strange interactions and apparently random events. How did one couple’s vacation cause 100,000 people to die? Does our decision to hit the snooze button in the morning radically alter the trajectory of our lives? And has the evolution of humans been inevitable, or are we simply the product of a series of freak accidents?

Drawing on social science, chaos theory, history, evolutionary biology, and philosophy, Klaas provides a brilliantly fresh look at why things happen—all while providing mind-bending lessons on how we can live smarter, be happier, and lead more fulfilling lives.

Brian Klaas Brian Klaas

Dr. Brian Klaas is an Associate Professor in Global Politics at University College London, an affiliate researcher at the University of Oxford, and a contributing writer for The Atlantic. He is also the author five books, including Fluke: Chance, Chaos, and Why Everything We Do Matters (2024) and Corruptible: Who Gets Power and How It Changes Us (2021). Klaas writes the popular The Garden of Forking Paths Substack and created the award-winning Power Corrupts podcast, which has been downloaded roughly three million times.

Klaas is an expert on democracy, authoritarianism, American politics, political violence, elections, and the nature of power. Additionally, his research interests include contingency, chaos theory, evolutionary biology, the philosophy of science and social science, and complex systems. In addition to Fluke and Corruptible, Klaas authored three earlier books: The Despot’s Apprentice: Donald Trump’s Attack on Democracy (Hurst & Co, 2017); The Despot’s Accomplice: How the West is Aiding & Abetting the Decline of Democracy, (Oxford University Press, 2016) and How to Rig an Election (Yale University Press, co-authored with Professor Nic Cheeseman; 2018).

Klaas has advised a variety of governments, US political campaigns, NATO, the European Union, the International Crisis Group, the Carter Center, multi-billion dollar investors, international NGOs, and international politicians.

Klaas has conducted field research, interviewing more than 500 people across the globe, including prime ministers, presidents, ministers, rebels, coup plotters, dissidents, and torture victims in an array of countries, including Madagascar, Thailand, Tunisia, Belarus, Côte d’Ivoire, Zambia, and Latvia.

Prior to becoming an academic, Dr. Klaas worked on US political campaigns—including serving as the Policy Director / Deputy Campaign Manager for Mark Dayton’s successful bid for Governor of Minnesota in 2010.

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Published on May 31, 2025 08:41
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