# #23 Geraint Lewis - Fine-Tuning, Multiverse, Cosmological Tensions

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Text version: https://stenobird.com/podcast/cool-worlds-podcast-6424163/23-geraint-lewis-fine-tuning-multiverse-cosmological-tensions.md
Podcast: [Cool Worlds Podcast](https://stenobird.com/podcast/cool-worlds-podcast-6424163)
Published: 2025-06-26T16:52:05+00:00
Episode link: https://coolworldslab.podbean.com/e/23-geraint-lewis-fine-tuning-multiverse-cosmological-tensions/
Audio file: https://mcdn.podbean.com/mf/web/853tkperxj78iv7d/GeraintLewis.mp3
Processing state: not_requested
JSON: https://stenobird.com/v1/public/podcasts/cool-worlds-podcast-6424163/episodes/23-geraint-lewis-fine-tuning-multiverse-cosmological-tensions
Duration seconds: 4641

## Resource

In this week's episode, David is joined by Geraint Lewis, Professor of Astrophysics at Sydney University. Geraint is a proponent of the fine-tuning argument as evidence for a multiverse and has authored a book on the topic "A Fortunate Universe: Life in a Finely Tuned Cosmos" [https://shorturl.at/xLyak]. To support this podcast and our research lab, head to https://coolworldslab.com/support Cool Worlds Podcast Theme by Hill [https://open.spotify.com/artist/1hdkvBtRdOW4SPsnxCXOjK]

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## Transcript

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