In this episode, Michael Shermer speaks with historian Sophia Rosenfeld about how modern notions of personal choice—from Amazon shopping to Tinder swipes—emerged from centuries of cultural, religious, political, and economic transformation. Was there ever a time when choice wasn’t synonymous with freedom? Why were early ideas of “common sense” and “free will” so limited? And what happens when choice itself becomes overwhelming?

From Enlightenment ideals to the sexual revolution and the abortion debate, Rosenfeld traces how our expanding range of options—and the meaning we attach to them—has shaped everything from our romantic lives to our political systems. A revealing look at the hidden history of freedom in a world that sometimes offers too much.

Sophia Rosenfeld is Professor of History at the University of Pennsylvania. Her new book is The Age of Choice: A History of Freedom in Modern Life.

What can a lifetime of scientific discovery teach us about the universe—and ourselves? In this wide-ranging conversation, Michael Shermer sits down with Lord Martin Rees, renowned cosmologist, astrophysicist, and former Astronomer Royal, to reflect on the forces that shape scientific success, from personal luck to cultural context. Rees shares insights on the mysteries of cosmology, the search for extraterrestrial life, and the paradoxes that still puzzle humanity.

Rees also shares intimate reflections on his friend and Cambridge colleague Stephen Hawking, thoughts on Fermi’s Paradox, and why some truths may forever lie beyond human comprehension.

The discussion also turns toward urgent global issues: the promise and peril of AI, ethical dilemmas in a rapidly advancing world, and how religion and terrorism could shape our future.

When you are faced with a decision, do you consider the best outcome, or do you consider your deepest values about which actions are appropriate? Steven Sloman contrasts these two primary strategies for making decisions: consequentialism or prioritizing one’s sacred values. He argues that, while both modes of decision making are necessary tools for a good decision maker, people err by deploying sacred values more often than they should, especially when it comes to sociopolitical issues. As a result, we oversimplify, grow disgusted and angry, and act in ways that contribute to social polarization.

Drawing on historical and current examples of the two decision-making strategies in action, Sloman provides a thorough overview of the psychology of decision making, including work on judgment, conscious and unconscious decision-making processes, the roles of emotion, and even an analysis of habit and addiction.

Steven Sloman has taught at Brown University since 1992. He is the author of Causal Models and a coauthor of The Knowledge Illusion (with Phil Fernbach). His new book is The Cost of Conviction: How Our Deepest Values Lead Us Astray.