#585: Why We Think Poorly: Reason, Emotion, and Evidence-Based Reasoning

#585: Why We Think Poorly: Reason, Emotion, and Evidence-Based Reasoning

Author: Danny Lennon November 25, 2025 Duration: 58:44

We take a look at critical thinking in science and healthcare, examining how we often fall prey to cognitive biases, emotional reasoning, and flawed thinking. Drawing from six different experts in their respective fields, the episode explores why we sometimes believe we are being rational when in fact our conclusions aren't truly evidence-based. The discussion spans what genuine evidence-based practice means, how domain expertise matters, and how factors like identity, beliefs, and emotions can derail objective reasoning.

Timestamps

  • [02:56] Dr. David Nunan on evidence-based medicine
  • [15:30] Dr. John Kiely on translating research into practice
  • [26:10] Dr. Gil Carvallo on emotion and decision making
  • [30:10] Dr. David Robert Grimes on webs of belief
  • [37:18] Dr. Matthew Facciani identity and belief formation
  • [42:31] Dr. Alan Flanagan on domain-specific expertise in nutrition science

Related Resources


Sigma Nutrition Radio, hosted by nutrition scientist Danny Lennon, moves beyond the noise of diet trends and simplistic advice to explore the complex, fascinating world of human nutrition. This is a space for deep, evidence-based conversations that acknowledge the nuance and often contradictory nature of scientific research. Each episode delves into a specific topic within health, fitness, or dietetics, breaking down the underlying physiology, examining the latest studies, and discussing practical implications with expert guests. The goal isn't to hand out rigid meal plans but to cultivate the critical thinking skills necessary to navigate the ever-changing landscape of nutritional science. You'll hear detailed analyses of how research is conducted, thoughtful debates on contentious issues, and explorations of how evidence translates-or doesn't-into real-world recommendations for different individuals. Tuning into this podcast means committing to a more sophisticated understanding of how food, movement, and metabolism interact, leaving you better equipped to make informed decisions about your own health and skepticism towards the next big headline. Danny’s approach is both rigorous and accessible, making even the most detailed biochemical pathways relevant to everyday life. It’s for anyone who has ever wondered about the real story behind a nutrition claim and values substance over soundbites.
Author: Language: English Episodes: 620

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