Dr. Trisha Pasricha is a gastroenterologist at Harvard Medical School, director of the Institute for Gut Brain Research at Beth Israel Deaconess Medical Center, and the Ask a Doctor columnist at the Washington Post. Her new book is "You've Been Pooping All Wrong: How to Make Your Bowel Movements a Joy."

We talk about why 95% of Americans aren't getting enough fiber, how your smartphone is giving you hemorrhoids, the surprising circadian rhythm of your colon, what the Bristol stool scale says about your health, how your gut microbiome shapes your mood and motivation, the enteric nervous system (the original brain), how early childhood trauma can rewire pain pathways for life, the gut origins of Parkinson's disease, and why you should just use the gas station bathroom.

Steven Pinker sits down for an interview about his seminal 2002 book, The Blank Slate. In this interview, we talk about grade inflation at Harvard, the role of tenure in promoting free speech and controversial ideas, the three laws of behavioral genetics and what they mean for parents, the surprising age at which language learning ability declines, and what ChatGPT tells us about how the human mind actually works.

David Bessis is a mathematician and the author of Mathematica: A Secret World of Intuition and Curiosity.

In this conversation, we explore David's provocative claim that mathematical ability is not genetically determined — and what that means for how we teach, learn, and think about intelligence itself.

David explains why math books aren't meant to be read, why conference talks often aren't meant to be understood, and how fear is the number one inhibitor of mathematical progress at every level — from primary school to research departments. He introduces the concept of "secret math": the oral tradition of metacognitive tricks and intuitions passed between mathematicians but rarely written down or taught explicitly.

We discuss Bill Thurston's extraordinary visualization abilities (developed through childhood exercises to compensate for a vision impairment), Terence Tao's superhuman mathematical speed, and David's own trajectory — from failing his first PhD to experiencing weeks of what he calls "hyperlucidity," where decades of mathematical progress compressed into days.

David shares practical insights on how he's teaching his own children, what schools get wrong about math education, and the three specific changes he'd make to how mathematics is taught. Throughout, he challenges the assumption that extreme talent gaps must have genetic explanations, arguing instead that idiosyncratic cognitive development and self-reinforcing feedback loops create the massive inequalities we observe.

Outline

00:00 Introduction

01:32 Why Math Books Are Not Meant to Be Read

05:10 The Secret Math That's Never Written Down

11:31 The Metacognitive Skill of Asking Stupid Questions

17:57 Fear is the Number One Inhibitor of Mathematics

25:44 How Idiosyncratic Development Shapes Math Talent

39:06 Why Terry Tao Can't Be Explained by Genetics

54:43 Raising Children to Be 1000x Better at Math

1:04:08 Hyperlucidity: How I Proved a 30-Year-Old Conjecture

1:18:18 Three Small Changes That Could Transform Math Education

1:24:39 Advice for Aspiring Math Students

David Moser is a scholar of linguistics at Capital Normal University in Beijing and the author of A Billion Voices: China’s Search for a Common Language.

0:00 Introduction

5:28 The Challenge of Translating Gödel, Escher, Bach

21:14 Cultural and Economic Changes in China in the 1980s

31:37 Why Chinese is So Damn Hard

38:56 The Core of Language is not the Writing System

44:04 The Political Fiction of a Unified Chinese Language

54:20 Can We Just Get Rid of the Chinese Characters?

1:02:27 "Character Amnesia" and the Future of Language Input

1:07:25 Comparing the Educational Systems of China vs. America

1:16:07 How David Learned Mandarin

1:28:32 Reflections

Stephen Hsu is a theoretical physicist, technology entrepreneur, blogger, and podcaster.

We talk about his education as a physicist, how research funding decisions are made in academia, and the replication crisis in science.

Daniel Everett is a linguist and anthropologist whose work has challenged long-standing beliefs about human language and cognition.

In 1977, Dan journeyed deep into the Amazon rainforest as a Christian missionary to live among an indigenous tribe of hunter-gatherers known as the Pirahã.

He is the author of several acclaimed books, including "Don't Sleep, There are Snakes" and "How Language Began". 

Outline