The Laws of Thought: What AI Reveals About the Human Brain with Tom Griffiths, PhD | E216

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Dr. Perlmutter’s groundbreaking new book, Brain Defenders, is now available for pre-order. Discover how to protect your brain and future health - reserve your copy today at https://www.braindefenders.com.

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What if AI isn't on a path to become a better human — but a fundamentally different kind of mind altogether? In this episode, Tom Griffiths joins me to challenge how we think about intelligence itself — and to make a compelling case that AI systems are best understood not as smarter or dumber than humans, but as "alien organisms" solving problems in ways our brains never could.

Tom Griffiths is a cognitive scientist, the Henry R. Luce Professor of Psychology and Computer Science at Princeton University, and head of Princeton's AI Lab. He is the co-author of the international bestseller Algorithms to Live By and author of the new book The Laws of Thought — an ambitious survey of three centuries of attempts to capture human thinking in mathematics.

We dig into the three mathematical frameworks scientists use to model thought, why a human toddler can learn language from a fraction of the data a large language model requires, what "resource rationality" reveals about mental health and decision-making, and what we stand to lose — and gain — as we increasingly outsource our thinking to machines.

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00:00 - Introduction

00:46 - A New Way to Think About Brain Health: Brain Defenders

05:27 - Welcoming Cognitive Scientist Tom Griffiths

06:04 - The Great Mystery: Can Math Explain How We Think?

08:23 - Three Threads of Cognitive Science: Rules, Networks, Probability

10:17 - Why AI Needs 10,000x More Data Than a Child

12:27 - Intuition Decoded: How Neural Networks Mirror Implicit Learning

15:03 - The Creativity Gap: Why AI Can't Think Outside the Box

18:06 - 40 Hz Light Therapy and Cognitive Decline

20:07 - Inductive Bias: The Evolutionary Head Start of the Human Brain

22:41 - Mental Health Through Three Levels of Analysis

25:25 - Resource Rationality: Why Humans Aren't Actually Irrational

29:33 - Free Will Through the Lens of the Laws of Thought

31:35 - Rethinking Education With Cognitive Science

34:33 - Evolutionary Mismatch: The Mind Meets Modern Technology

37:23 - AI as Alien Intelligence: A New Mental Model

38:04 - Personalized Brain Health: 3X4 Genetics

39:55 - Uncertainty: The Hidden Engine of Human Cognition

43:34 - Bayesian Inference: The Math of "Best Guessing"

44:37 - The Biggest Misconceptions About Intelligence

47:14 - Algorithms to Live By: Optimizing Daily Decisions

49:22 - Five Years From Now: The AI Forecast

51:33 - The Calculator Effect: What Happens When We Outsource Thinking

53:56 - Metacognition: Becoming the Manager of AI

55:34 - Closing Thoughts

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