Ep. 52 — Why Do Smart People Make Terrible Decisions Together? The Science of Groupthink

Why do smart groups make dumb decisions and what can you do about it?

In this episode of Second Thoughts, Dr. Roger Hall breaks down the psychology of groupthink: the invisible force that causes intelligent, well-meaning teams to take on more risk, ignore warning signs, and rationalize catastrophic choices.

From the Bay of Pigs invasion to the Challenger disaster to the Boeing 737 Max, groupthink has left a trail of preventable failures throughout history. Dr. Hall explains the behavioral science behind why this keeps happening and more importantly, how leaders can break the pattern before it costs them.

Whether you're leading a team of two or two hundred, this episode will change how you run your next meeting.

💡 What You’ll Learn:
• What groupthink actually is  and why it makes group decisions worse than individual ones
• The risky shift phenomenon: why groups consistently underestimate danger
• How diffusion of responsibility gives everyone plausible deniability
• The real story behind the Bay of Pigs invasion and how JFK overhauled his decision-making process before the Cuban Missile Crisis
• Why NASA launched the Challenger despite six months of written warnings from engineers
• How to use a devil's advocate (gadfly) to protect your team from its own blind spots
• Why deadline pressure is one of the biggest drivers of catastrophic decisions
• The "skin in the game" principle and why distance from consequences kills accountability
• How humans consistently misperceive risk including a beach thought experiment that will surprise you
• Nassim Nicholas Taleb's Black Swan framework and what Russian roulette teaches us about one-in-a-hundred odds