#140 Sean Carroll - The Limits of Scientific Explanation
Within Reason
Alex J O'Connor
4.9 • 2.2K Ratings
🗓️ 26 January 2026
⏱️ 83 minutes
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Summary
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Sean Michael Carroll is an American theoretical physicist who specializes in quantum mechanics, cosmology, and the philosophy of science.
TIMESTAMPS:
0:00 – Tour
0:32 – Can Science Alone Explain the Universe?
6:08 – The Principle of Sufficient Reason
10:07 – What Are the Laws of Physics?
18:22 – The Fine-Tuning Argument
32:39 – Does the Multiverse Undermine Morality?
36:29 – Free Will and the Multiverse
42:24 – What Is Emergence?
56:21 – What “Stuff” Do Materialists Believe In?
1:02:41 – How Does Consciousness Work on Materialism?
1:17:31 – What Could Move Sean Away from Materialism?
Transcript
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| 0:29.8 | Hey, I'm going on a tour of the United Kingdom. If you've ever been interested in that big |
| 0:35.2 | question of God's existence or try to make sense of religion in the 21st century or consciousness or anything philosophical, then join me on stage as I try to work out some of these topics with you. I'll be in conversation with a good friend, but also bring questions because there will be an extensive Q&A and maybe even an opportunity to hear and rate |
| 0:55.4 | some of your philosophical hot takes. The tour dates are on screen. The link to buy tickets is in the |
| 1:00.3 | description and I hope to see you there. Sean Carroll, welcome to the show. Thanks very much for |
| 1:04.5 | having me. Is science on its own enough to understand the universe? |
| 1:13.4 | The universe, maybe. |
| 1:15.7 | I do think that there are plenty of questions out there that science is not up to the task of uniquely answering. |
| 1:21.7 | Maybe those questions include things like mathematics, which is sort of purely formal and logical and would be true |
| 1:29.0 | either independently or whatever the scientific facts about the universe were. I would also say that |
| 1:35.2 | things like morality and aesthetics are not out there in the universe, except for the fact that they're |
| 1:40.2 | invented by we human beings who are part of the universe. But I do think that science is up |
| 1:44.6 | to the task of explaining what the universe is and what happens in it. And that's basically |
| 1:49.8 | science's job. You're one of those people. It's difficult to know where to even begin, |
| 1:55.4 | given everything that you cover in your work. But I think that perhaps one sort of overview picture here is on this |
| 2:03.4 | question of what science does. You just said that science explains. I often speak to physicists who |
| 2:10.3 | say that really the job of physics and science is to kind of make predictions about the future, |
| 2:15.5 | and really all it does is like observe things that |
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