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How AI can debunk a conspiracy theory in 8 minutes

Oct 2, 2026 · 19m

Summary

Psychology professor Gordon Pennycook shares how he used an AI chatbot to debunk conspiracy theories in his brother, revealing that 25% of believers changed their minds after eight minutes of factual dialogue. The episode also explores "prebunking," a strategy by researcher Sander van der Linden that inoculates people against future manipulation by exposing common disinformation techniques. Together, these stories highlight that while truth can be persuasive, it requires unemotional, personalized evidence to overcome deep-seated beliefs and cognitive biases.

Topics discussed

Gordon Pennycook's brother falls down a conspiracy rabbit hole Introduction to the show and the problem of changing minds Why direct correction fails and the role of trusted influencers The DebunkBot study: AI chatbot changes 25% of beliefs in 8 minutes Why AI is effective: cool-headed, personalized, and fact-based The double-edged sword: AI can also persuade people to believe lies Transition to prevention: Sander van der Linden's approach Introducing Prebunking: inoculating against misinformation How prebunking works: exposing manipulation techniques The vaccine analogy and using historical propaganda to teach Instagram experiment: prebunking video boosts detection to 60% The truth bias and the challenge of living in the gap Conclusion: Learning to leave room for doubt Credits and sponsor information
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