Bad Idea #46 "Conspiracy Theories" with Calum Matheson

About this episode

Mark Lynas discusses the dangers of conspiracy theories with Calum Matheson, emphasizing the need for probabilistic thinking to mitigate their impact on democracy.

Conspiracy theories are psychologically reassuring closed systems that are corroding democracy. In this conversation, Mark Lynas speaks with Calum Matheson—associate professor and chair of Communication at the University of Pittsburgh—about why conspiracy thinking is more dangerous than ever. The appeal is simple: know the conspiracy, and everything makes sense. You're exceptional because you see the truth while others are "sheep." Every event fits the pattern. And there's always a kernel of truth—the Epstein files validate QAnon, Purdue Pharma's opioid conspiracy fuels anti-vax narratives. Real conspiracies exist, making fake ones nearly impossible to debunk. The problem? Conspiracy theorists use the same language we do—claiming we ignore evidence and suffer cognitive bias. Worse, conspiracy thinking now runs governments: RFK Jr. heads Health and Human Services, transvestigators claim all celebrities are secretly transgender, and deplatforming backfires. Matheson's prescription: stop trying to demolish conspiracies with facts. Instead, teach probabilistic thinking. Science isn't absolute certainty; it's extremely high probability. We must learn to live with uncertainty…

People in this episode

Host: Mark Lynas

Guest: Calum Matheson

Topics covered

• Conspiracy Theories
• Psychology
• Democracy
• Probabilistic Thinking
• Cognitive Bias

Keywords

• QAnon
• Epstein files
• Purdue Pharma
• anti-vax narratives
• RFK Jr.
• transvestigators

Mentioned in this episode

Products: QAnon

Books & works: Conspiracy Theories, Desiring the Bomb: Communication, Psychoanalysis and the Atomic Age, Desiring the Bomb

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