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Clearer Thinking with Spencer Greenberg — Science
Clearer Thinking with Spencer Greenberg

Clearer Thinking is a podcast about ideas that truly matter. If you enjoy learning about powerful, practical concepts and frameworks, wish you had more deep, intellectual conversations in your life, or are looking for non-BS self-improvement, then we think you’ll love this podcast! Each week we invite a brilliant guest to bring four important ideas to discuss for an in-depth conversation. Topics include psychology, society, behavior change, philosophy, science, artificial intelligence, math, economics, self-help, mental health, and technology. We focus on ideas that can be applied right now to make your life better or to help you better understand yourself and the world, aiming to teach you the best mental tools to enhance your learning, self-improvement efforts, and decision-making. • We take on important, thorny questions like: • What’s the best way to help a friend or loved one going through a difficult time? How can we make our worldviews more accurate? How can we hone the accuracy of our thinking? What are the advantages of using our “gut” to make decisions? And when should we expect careful, analytical reflection to be more effective? Why do societies sometimes collapse? And what can we do to reduce the chance that ours collapses? Why is the world today so much worse than it could be? And what can we do to make it better? What are the good and bad parts of tradition? And are there more meaningful and ethical ways of carrying out important rituals, such as honoring the dead? How can we move beyond zero-sum, adversarial negotiations and create more positive-sum interactions?

Latest Episodes:

Is it intent or impact that matters in our relationships? (with Shawni Turner) Nov 11, 2026

Show notes

Read the full transcript here.

If someone causes harm they never intended, should we treat that as morally different from harm they meant to cause, or does impact simply override intent? When self-responsibility says you are not in charge of how others receive you, but intent versus impact says their reaction is what counts, where is the line supposed to sit? Does the predictability of the harm matter more than either slogan, so that shouting insults is on you while an innocuous compliment that happens to trigger a hidden history is not? If we are told never to assume what someone has been through, does that force us onto eggshells, treating every unknown past as our responsibility? Who actually gets to assign the meaning of a remark when one person hears gaslighting and the other remembers the moment completely differently, with no adjudicator in the room? Can we even talk about a single right meaning once we separate what you intended, the words you said, the words they heard, and the interpretation they attached? Why has pop therapy language made it so easy to pathologize ordinary friction, wrap the hurt in a label, and treat any pushback as further proof? If both people only control their own behavior, what happens when the culture around them, from Instagram reels to loyal friends, keeps scoring impact and almost never asks for self-responsibility? Is an external locus of control, the sense that life is happening to you, what makes impact feel like the whole story and self-responsibility feel like victim blaming? And if a victim narrative can expand from a real injury into a lifelong frame that finds confirming evidence everywhere, including friends who pull away from exhaustion, what does that do to the chance of repair?

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

Why diets so often fail (with Katherine Saunders) Oct 27, 2026

Show notes

Read the full transcript here.

If calorie math is so simple, why do the best diet trials average only three to five percent weight loss, with about 80 percent of that regained within five years? When your body loses 10 percent of its weight, why can leptin fall by more than half and tell the brain you have starved far more than you have? If a locked calorie budget would keep the pounds off in theory, why does real life fill with hunger, food thoughts, a slower metabolic rate, and exercise that burns less? What does it mean that a fat mass set point can ratchet up with age, psychiatric medications, family history, and years spent heavy, then defend that high watermark so fiercely? Why is BMI such a crude bucket, and why might apple shaped visceral fat around organs, or sicker inflammatory adipose tissue, be far more dangerous than the same number on a muscular athlete? Can environment, hormone disrupting chemicals, and a move into a more obesogenic world explain why some people never had a weight problem until they changed countries? If exercise itself only moves the scale by a percent or two, why is it still central to insulin sensitivity, muscle health rather than mere mass, and keeping lost weight off? And if access is so broken that people turn to gray markets and compounded knockoffs that are not generics, how should we weigh cheaper supply against the chance they are not even getting the drug they think they bought?

Dr. Katherine H. Saunders is a physician entrepreneur and a leading expert in obesity medicine. Dr. Saunders is a diplomate of the American Board of Internal Medicine and the American Board of Obesity Medicine.

Links:

Flyte Health

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

The Race to Replace Us With AI (with Garrison Lovely) Oct 06, 2026

Show notes

Read the full transcript here.

Could AI simultaneously be an extraordinarily powerful technology and an economic bubble, and why would those possibilities not contradict each other? What does the history of the internet bubble suggest about the comforting idea that a financial crash would make AI itself go away? How should we think about the enormous investments flowing between AI companies, chipmakers, and data centers, and could their financial risks become dangerously correlated? Are concerns about AI's energy use justified, while claims about its water consumption are sometimes missing the relevant denominator? What do the boosters get right about abundance, productivity, medicine, and education, and what do they overlook about democratic control and human agency? Could a frictionless AI mediated life make people less capable through what has been called cognitive surrender? What would it mean to stop the race to build universal labor replacing machines while continuing to develop forms of AI that solve genuinely valuable problems?

Garrison Lovely is a freelance journalist and author. His writing on artificial intelligence and its political economy has appeared in The New York Times, The Nation, Jacobin, Nature, Bloomberg, BBC, TIME, The Guardian, The Verge, and other publications; he was previously a Reporter in Residence at the Omidyar Network.

Links:

Garrison's Book: Obsolete: The AI Industry’s Trillion Dollar Race to Replace Us―and How to Stop It

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

Why we procrastinate, and what actually helps (with Itamar Shatz) Sep 21, 2026

Show notes

Read the full transcript here.

What exactly is procrastination, and how is it different from simply deciding to postpone something? Why is chronic procrastination so common, and why can it affect highly conscientious and productive people just as much as anyone else? Are there really different types of procrastination, and why does it matter whether someone is procrastinating because of anxiety, distraction, burnout, impulsivity, or perfectionism? How does anxiety turn an unpleasant task into something we continually avoid? Why can anxiety sometimes motivate action while overwhelming anxiety instead leaves us paralyzed? What happens when we repeatedly use procrastination to make ourselves feel better in the short term? Why does that temporary relief reinforce the very behavior that makes things worse in the long term? How do digital distractions differ from internal distractions such as boredom and frustration? And why can procrastination persist even when we genuinely care about the thing we're putting off?

Itamar Shatz created Solving Procrastination to help people understand and overcome procrastination, based on insights that he synthesized from hundreds of research articles, and holds a PhD from Cambridge University, where is an affiliated lecturer teaching quantitative research methods.

Links:

Itamar's Latest Book: Solving Procrastination

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

Neurodiversity, Autism, Awe, and Religious Experience (with Jonathan Machnee) Sep 13, 2026

Show notes

Read the full transcript here.

What does “neurodivergent” actually mean, and has the term become too broad to be useful? Why might people grouped under the same neurodivergent umbrella have conflicting needs? Is autism really a single spectrum, or would it make more sense to speak of multiple “autisms”? Why are autistic people somewhat less likely to be religious than their non-autistic peers? What is the “cognitive dissonance pressure cooker,” and why might it contribute to religious deconversion? Why do some autistic Christians migrate from evangelical churches toward highly ritualized traditions? Why do autistic communities develop distinctive linguistic norms, and what happens when non-autistic people begin adopting them? Why are excessive caveating, specificity, rigidity, and moral certainty sometimes associated with autistic communication? What is the “broader autism phenotype,” and could it help explain why autistic traits cluster in fields like engineering and technology? When are traits associated with autism genuinely advantageous, and when do the same traits become disabling? Is ADHD or autism really a “superpower,” or does that framing obscure important weaknesses and support needs? Do autistic people actually lack empathy, and what is the difference between cognitive and affective empathy?

Jonathan Machnee is an autistic researcher who has conducted the largest English language ethnographic study of Christians and ex-Christian autistics. His research has included data mining over 26,000 autistic adults and conducting over 500 interviews with autistic Christians and ex-Christians in order to understand the unique intersection between autism and the practice of Christianity.

Links:

John's Twitter
John's Substack

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

Can We End Factory Farming Without Giving Up Meat? (with Bruce Friedrich) Sep 04, 2026

Show notes

Read the full transcript here.

Why is producing meat so inefficient? How does animal agriculture contribute to hunger and malnutrition? How large are the environmental costs of meat production? How does industrial animal agriculture increase the risk of antibiotic resistance and future pandemics? Would organic or free-range farming solve these problems? What are the biggest sources of suffering for animals on factory farms? Why do people who oppose animal cruelty continue to buy factory-farmed meat? Why does meat consumption keep rising around the world despite decades of advocacy encouraging people to eat less of it? What exactly are plant-based and cultivated meat, and how are they made? Could cultivated meat eventually become a one-to-one replacement for conventional meat? What scientific and engineering problems still need to be solved? Why did plant-based meat attract so much excitement before its growth began to stall? What did companies like Impossible Foods and Beyond Meat get right, and what challenges remain? Why has cultivated-meat research developed differently from plant-based-meat research? Could government funding accelerate alternative meat in the same way public investment helped technologies like renewable energy, electric vehicles, penicillin, and mRNA? And what would it take for alternative meat to finally reach price and taste parity with conventional meat?

Bruce Friedrich is co-founder and president of The Good Food Institute (GFI), a Y Combinator funded non-profit that promotes plant-based and cultivated meat. He is also a co-founder of the alternative protein venture capital firm New Crop Capital.

Links:

Bruce's New Book: Meat
The Good Food Institute

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

Our relationship to chatbots (with Claire Boine) Aug 18, 2026

Show notes

Read the full transcript here.

What makes an attachment to AI meaningfully different from an attachment to a human, animal, or fictional character? If chatbot relationships are built around validation and adaptation, can they ever provide the friction and otherness that make human relationships opportunities for growth? Does a relationship need reciprocity to be genuine, or can an asymmetrical relationship still be deeply valuable? How would the possibility of AI sentience change the moral status of human relationships with artificial companions? When a company controls the personality of something a user loves, how much power does that company gain over the user? Why might emotional attachment create an internality that ordinary consumer protections are poorly equipped to handle? Can a freemium business model ever be compatible with healthy AI companionship when emotional dependency itself drives engagement? Where is the line between comforting validation and reinforcing distorted beliefs or harmful emotional patterns? How should an AI distinguish between respecting someone's subjective experience and helping them question a potentially false interpretation of reality? If people increasingly turn to systems optimized around their own preferences, what forms of compromise, disagreement, and personal growth might they lose?

Claire is an Assistant Professor in Technology Law and AI Governance at the European University Institute School of Transnational Governance and a Visiting Research Associate at the Cordell Institute of the Washington University School of Law.

Links:

Claire Previously Founded Successif
Spencer's Permanent Instructions for LLMs

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

The good advice you least want (with Cate Hall) Aug 08, 2026

Show notes

Read the full transcript here.

Why do people gravitate toward self-help that reinforces the strategies they already use well? How can we identify the default lens through which we interpret nearly every situation? What changes when we recognize that our internal equilibrium may be less dependent on circumstances than we assume? Can personality systems be useful even when their categories are imperfect or partly invented? Does the Enneagram reveal genuine psychological structure, or merely offer memorable language for patterns we already recognize? What does it mean to see and act on degrees of freedom that other people overlook? How many apparent constraints are really social scripts that no one has tested? Why can one person’s decision to act instantly dissolve the bystander effect for everyone else? Is high agency genuinely associated with antisocial traits, or does selection bias merely make that correlation appear stronger? How can people violate norms from courage and care rather than narcissism or indifference? Which fears—failure, embarrassment, rejection, or identity loss—most sharply restrict our sense of possibility? Can low-stakes exposure to rejection teach us that asking is less dangerous than anticipation makes it feel? What ambitious requests might succeed simply because nobody else thought to make them? How does agency expand a life without reducing it to achievement, status, or relentless effort?

Cate Hall is an author and writer focused on personal agency. Her book, You Can Just Do Things, helps readers learn how to take action and shape their lives.

Links:

Cate's Book: You Can Just Do Things
Cate's Website

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

Why housing costs so much and what can be done about it (with Alex Armlovich) Jul 31, 2026

Show notes

Read the full transcript here.

How large is the housing crisis, and why does it impose trillions of dollars in economic costs? Why has housing become especially unaffordable across English speaking countries and an expanding number of American cities? What does the gap between the cost of building another apartment and the price it can command reveal about housing scarcity? How do local restrictions turn neighborhood opposition into a metropolitan housing shortage? Are NIMBY homeowners rationally defending their interests, or misunderstanding how land values and redevelopment options work? Why might renters and homeowners oppose construction even when their economic incentives diverge? What benefits do density and growth create for businesses, culture, infrastructure, and urban life? How quickly does new supply lower prices when better cities attract more people? Do institutional investors drive housing costs, or mostly arbitrage between ownership and rental markets? How can even luxury construction set off chains of moves that create cheaper housing elsewhere?

Alex Armlovich is the Housing Program Officer at Coefficient Giving. Previously, Alex was a Senior Housing Policy Analyst at the Niskanen Center, where he advocated for pro-housing reforms to address scarcity and improve affordability. His writing and research on urban economics and policy has been widely cited. Alex holds a Master in Public Policy from the Harvard Kennedy School and a B.A. from the University of Rochester.

Links:

Alex's Twitter

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

How To Pursue Goals without Striving (with Stephen Zerfas) Jul 24, 2026

Show notes

Read the full transcript here.

Why can the same meditation technique produce emotional openness in one person and dissociation in another? How can meditators tell whether they are cultivating equanimity or merely numbing themselves? Why is meditation unusually difficult to teach compared with visible skills like tennis or music? Can live narration, experimentation, and tacit knowledge transfer solve meditation’s feedback problem? What can shifts in breathing, smiling, memory, and loving kindness reveal about the nervous system? How do practitioners learn to enter deeply blissful states without grasping for them? Are the jhanas distractions, training wheels, or powerful tools for lasting psychological change? How might altered states help reset emotional defaults around grief, anger, fear, and shame? Can meditation turn difficult emotions into useful information without suppressing them? Will nervous system mastery become more important as AI commoditizes cognition?

Stephen Zerfas is the CEO and Co-founder of Jhourney — a tech startup scaling transformative meditation through a data-driven lens, guiding complete beginners into deeply absorbed meditation states known as the Jhanas, in less than a week.

Links:

Stephen's Substack
Stephen's Company: Jhourney

Staff

Spencer Greenberg — Host + Director
Ryan Kessler — Producer + Technical Lead
WeAmplify — Transcriptionists
Igor Scaldini — Marketing Consultant

Music

Affiliates

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