David Pinsof is an evolutionary psychologist, writer, and co-creator of Cards Against Humanity. He is the author of the substack "Everything Is Bullsh*t", where he examines self-deception, social status, morality, humor, and the hidden motives behind human behavior through the lens of evolutionary psychology. In this conversation, we discuss how self-deception stabilizes status games, why people pretend not to care about status, whether happiness is really the goal of life, why utilitarianism may misunderstand human nature, how charisma works, why deception can sometimes benefit the deceived, what ancient Cynicism reveals about status, and why laughter may have evolved as a way to signal that a social “mix-up” should not be taken seriously.

William B. Irvine is an American philosopher and Professor Emeritus at Wright State University, best known for his work on Stoicism and practical philosophy. His books include A Guide to the Good Life, which helped popularize modern Stoicism, and his most recent work, How to Think More and Better: Being Reasonable in an Unreasonable World (2024), where he explores evidence-based reasoning, cognitive biases, and the challenges of thinking clearly in the modern information environment. In this conversation, we discuss why many people choose the “easy way” of thinking by relying on others instead of engaging in effortful reasoning, and how this tendency is amplified by social media and AI. We explore concepts such as evidence-based reasoning, confirmation bias, and the distinction between “feelers” and “thinkers.” The discussion also covers the erosion of trust in evidence in the age of AI-generated content, and how emerging technologies may both improve and distort our ability to think clearly.

Rebecca Goldstein is a philosopher/novelist who brings serious philosophical ideas to the world of popular discussion. A trained analytic philosopher, with an interest in philosophers such as Spinoza, Plato, and Aristotle; her writing takes up many of the most ancient of questions about human existence from a contemporary perspective. She recently developed the concept of "the mattering instinct" (which represents the core impulse or drive of humans to believe their lives have importance). Here, we talk about why being happy isn't the most important thing in the world and how people are actually motivated by the desire to be meaningful. Here we also examine how we create our own sense of meaning through what Goldstein refers to as 'mattering projects', why modern life makes creating this kind of meaning difficult and how the loss of traditional forms of meaning (such as religious systems) has moved responsibility for developing a sense of personal meaning to the individual. Along the way we will reference Aristotle's concept of flourishing, Spinoza's view of living with purpose, the distinction between information and knowledge and what does it mean to lead a life worthy of consideration.

Dr. Niayesh Afshordi is a theoretical physicist and professor at the University of Waterloo, known for his work on cosmology, quantum gravity, and the fundamental nature of the universe. His research explores some of the deepest questions in physics, including the origin of the Big Bang, the nature of time, and the limits of our current theories. He is also the co-author of The Battle of the Big Bang, where he examines competing models of the early universe and what they reveal about reality. In this episode, we explore whether the Big Bang truly marks the beginning of the universe or simply the point where our current equations break down. We discuss the meaning of singularities, the possibility of something existing before the Big Bang, and whether the universe could emerge from “nothing.” The conversation also dives into quantum mechanics, the challenge of unifying it with gravity, the role of inflationary models, and why time itself may not be fundamental.

Robert Pogue Harrison is a Professor of Italian and French Literature at Stanford University and a leading scholar in Philosophy, Literature, Intellectual History. He has written many important books on topics such as Death and Youth, which include: The Dominion of the Dead; Juvenescence. Additionally, he hosts the popular podcast "Entitled Opinions" in which he discusses big picture issues of Human Existence, Culture and Meaning. In this conversation, we examine the reason for the rising discomfort in modern society regarding Death and what that may say about how we perceive meaningfulness. We compare the concepts of Dying vs. Perishing; and examine the concept of a "Secular After Life." We also look at how other cultures in the past developed their social structures based upon common mortality. The conversation also moves into technology, examining whether AI is reshaping our relationship with thinking, memory, and human connection, and what might be lost when thinking is outsourced. Throughout, we return to a central question: what happens to life when death is no longer understood as something that gives it structure and meaning?

What do you believe to be true? Are you absolutely certain? Can you really know? Does reason exist for its own sake, or is every thought simply an illusion created by your brain? This week, I look at Descartes' revolutionary experiment of doubting everything - everything about the world, how we sense things, even our own reasoning - and attempting to build knowledge back up again. He bases his conclusions on what he finds: the idea of "perfection" leads him to conclude that there must be a god. Is the argument valid? Where do your thoughts come from? How could you feel so sure about something and yet be entirely wrong? Is it possible to use logic to prove anything at all? And at the heart of these questions is one fundamental question that remains unanswered: Are you a person, or are you just using a body?

I recently talked with Dr. Gordon Pennycook who is a cognitive psychologist and has researched, among other things, why people accept false information, why some statements sound profound but have no real meaning and if using Artificial Intelligence (AI) could help decrease conspiracy thinking. Dr. Pennycook is one of the top researchers studying misinformation, cognitive reflection and what he terms "Pseudo-Profound Bullshit", statements that may seem profound but fall apart when scrutinized. We talked about the psychological mechanisms behind pseudo-profoundness and others related to human reasoning. We also discuss his recent research showing that conversations with large language models can reduce belief in conspiracy theories by presenting clear evidence and counterarguments. Could AI become a tool for improving public reasoning? Or does it introduce new risks for misinformation?This conversation explores how intuition, reflection, and cognitive laziness shape the way we think and what that means in an age of algorithms and AI. If you enjoy the episode, please consider leaving a like, subscribing, and leaving a review on Youtube, Spotify and Apple!

Steven C. Hayes is a prominent American clinical psychologist and researcher known for his foundational work in behavioral science and psychotherapy with a focus on human language, cognition, and alleviating suffering. He developed Relational Frame Theory (RFT), which explains human higher cognition, and originated Acceptance and Commitment Therapy (ACT), an evidence-based psychotherapy. We explore why our evolution as social primates has left us with a mind that we can’t forget. Dr. Hayes explains how to transition from a life of emotional struggle to one of true psychological flexibility. We also explore the relationship of pursuing happiness and how this may ultimately lead to the opposite, the differences between being in pain and suffering, the concept of experiential avoidance, the concept of cognitive attachment, the evolutionary development of language and human cognition, and the science of developing psychological flexibility.