Episode

#72 The Multiverse is Real - David Wallace

Podcast
The Uncertainty Podcast
Published
Feb 19, 2026
Duration seconds
4741
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https://mileskdonahue.substack.com/p/72-the-multiverse-is-real-david-wallace
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Markdown
/podcast/the-uncertainty-podcast-7089022/72-the-multiverse-is-real-david-wallace.md

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Summary

David Wallace, professor of philosophy at the University of Pittsburgh, explains why he finds the many-worlds interpretation of quantum mechanics convincing. We discuss probability, what it means for persons to "split", whether teleportation means death, and the role of philosophy in assessing science. Video of this interview is available on YouTube . To support the channel, do please oh please consider donating, either via PayPal or Buy Me a Coffee . Follow me on X-formerly-Twitter . EPISODE CHAPTERS 00:00:00 Introduction 00:01:22 What is the difference between quantum and classical mechanics? 00:08:12 The measurement problem 00:14:16 The many-worlds interpretation 00:19:46 Why can't I see other branches of reality? 00:33:13 Is many-worlds crazy and absurd? 00:37:57 The probability problem 00:50:58 Do people split in two when the universe branches? 01:00:11 Does many-worlds explain fine-tuning? 01:04:56 Should many-worlds change the way we live? 01:16:30 Of what are you most uncertain? Get full access to Miles K. Donahue at mileskdonahue.substack.com/subscribe