Episode 302: A Philosopher and a Physicist Discuss Probability and the Fine Tuning of the Universe with Dr. Timothy McGrew and Dr. Luke Barnes

How does philosophy inform modern physics? And how do physicists incorporate philosophy into their research? On this episode, we dive into those questions with philosopher Dr. Timothy McGrew and astrophysicist Dr. Luke Barnes in order to help you fine tune your thinking about the fine tuning of the universe. Critics of the fine-tuning argument will often invoke probabilities in order to get around the argument's deeper implication of the existence of God. Tim and Luke will explore some of the issues in probability theory as it informs the physics of the fine-tuning argument. Dr. Timothy McGrewTimothy McGrew is Professor of Philosophy at Western Michigan University, where he has taught for the past 25 years. His research interests include formal epistemology, the history and philosophy of science, and the history and philosophy of religion. When he is not doing philosophy, he enjoys playing chess online, coaching at his local chess club, running trails, and making high quality paper airplanes. He lives in SW Michigan with his wife, Lydia McGrew, and their daughters.Dr. Luke BarnesDr Luke A. Barnes is a Senior Lecturer in Physics at Western Sydney University. With a PhD in astronomy from the University of Cambridge, he has published papers in the field of galaxy formation and on the fine-tuning of the Universe for life. He is the coauthor with Prof. Geraint Lewis of A Fortunate Universe: Life in a Finely-Tuned Cosmos and The Cosmic Revolutionary's Handbook: (Or: How to Beat the Big Bang), published by Cambridge University Press. Free Articles from Watchman Fellowship Profile on Naturalism: https://www.watchman.org/Naturalism/ProfileNaturalism.pdf Profile on Scientism: https://www.watchman.org/scientism/ProfileScientism.pdf Profile on Atheism: https://www.watchman.org/profiles/pdf/atheismprofile.pdf Additional ResourcesFREE: We are also offering a subscription to our 4-page bimonthly Profiles here: www.watchman.org/FreePROFILE NOTEBOOK: Order the complete collection of Watchman Fellowship Profiles (around 700 pages -- from Astrology to Zen Buddhism) in either printed or PDF formats here: www.watchman.org/NotebookSUPPORT: Help us create more content like this. Make a tax-deductible donation here: www.watchman.org/GiveApologetics Profile is a podcast ministry of Watchman Fellowship For more information, visit www.watchman.org © 2025 Watchman Fellowship, Inc.