Gerd Gigerenzer, Psychologist on Heuristics, Decision-Making, and Economic Rationality

Gerd Gigerenzer, Ph.D, on Risk Literacy, Heuristics, and Making Decisions Under Uncertainty⁨@SilverDisobedience⁩  Perception Dynamics podcast host, Dian Griesel interviews psychologist and risk expert Gerd Gigerenzer about decision-making in an uncertain world; distinguishing calculable risks (like roulette) from uncertainty where “37s happen” (war, relationships, crises) and more. Gigerenzer explains that logic and consistency-based rationality don’t capture how people actually understand language and act, and argues that under uncertainty optimization is a fiction, so people rely on heuristics and Herbert Simon’s “satisficing,” which he links to modern option overload (e.g., Tinder) and unhappiness. They discuss learning to live with uncertainty, courage and responsibility in choices, and the benefits of collaborative decision-making (pilots vs. solo). Gigerenzer warns about groupthink and defensive decisions in business and “defensive medicine” driven by US tort law. He highlights poor risk literacy (CT scan vs. Fukushima radiation), recommends better information and reading, and critiques tech-driven attention and mental health harms.Bio: Gerd Gigerenzer is a German psychologist and decision scientist known for his research on bounded rationality, heuristics, and risk literacy. His work explores how people make decisions under uncertainty, emphasizing the effectiveness of simple rules and intuitive reasoning over complex models.Notable books authored by Gerd Gigerenzer include: Gut Feelings, Risk Savvy, Calculated Risks, Simple Heuristics That Make Us SmartCentral to Gigerenzer’s work is the concept of “ecological rationality,” which argues that human decision-making strategies evolve to fit real-world environments rather than conforming to idealized models. He champions the use of “fast and frugal” heuristics—simple cognitive shortcuts that often outperform complex algorithms when time, data, or computational resources are limited. Gerd Gigerenzer's Website here has more information: https://www.gerd-gigerenzer.com/Please SUBSCRIBE! I’m Dian Griesel, Ph.D. aka @SilverDisobedience to my hundreds of thousands of monthly blog readers. You can learn more about me here:   ⁠⁠https://diangriesel.com⁠⁠ But for starters…⁠I am a perceptionist and communication counselor.⁠ For 30 years I have helped my clients to achieve greater understanding as to how perceptions impact everything we do whether personally or professionally."Raw, truth-driven conversations with fascinating guests — from business & psychology to careers, pop culture & the B.S. in between." Expect bold questions. Unfiltered insights. A few laughs. Real growth. Subscribe & Join the Conversation.Show Run:00:00 Why News Feels Crazy01:16 Risk vs Uncertainty01:42 Logic and Intuition03:06 What Is Rationality03:45 Heuristics and Satisficing06:30 Tinder and Commitment07:48 Gigerenzer Origins10:14 Learning Uncertainty12:17 Courage to Decide13:32 Team Decisions and Checklists16:20 Groupthink and Defensive Choices18:44 Defensive Medicine Reality21:32 Radiation and Risk Literacy22:38 Better Information Not More25:34 Thinking in a Smart World29:06 Closing and Subscribe