Scientists on Reddit

Sean Carroll

Theoretical physicist and author

We retrieved 31 posts and 568 comments from u/seanmcarroll, dated 2007 to 2026, most often in r/IAmA, r/askscience and r/seancarroll.

Best moment

A redditor wrote in r/askscience

On “AskScience AMA Series: I’m Sean Carroll, physicist and author of best-selling book THE BIG PICTURE. Ask Me Anything about the universe and what it means!”

Hello Sean. Given your similarity in name to Sean B Carroll, and both of your strong science outreach activities, do you have any fun stories to share about sharing the same name? If you challenged him to a duel to the death, what weapons would you choose? Also, have you ever…

u/seanmcarroll replied

There is photographic evidence that we can exist in the same spatial vicinity without mutual destruction. But he is clearly the evil twin, given the evidence of the beard.

Excerpt
AMA answerr/askscience · 19 points as of Nov 2026Full thread ↗

More moments

A redditor wrote in r/askscience

On “AskScience AMA Series: I’m Sean Carroll, physicist and author of best-selling book THE BIG PICTURE. Ask Me Anything about the universe and what it means!”

Hi Sean! I've had your arrow of time book on my shelf for years, and I'd like to personally apologize for not picking it up yet. No good reason, really. Sorry. My question: So-called hidden variable theories of QM have been getting a lot more play in the popular press recently…

u/seanmcarroll replied

As an author, as long as you've purchased the book, your work here is done.

Excerpt
AMA answerr/askscience · 35 points as of Nov 2026Full thread ↗
A redditor posted in r/seancarroll

Sean Carroll's new book - acknowledgements

I think Sean should acknowledge that no cats were harmed in the writing of his book on quantum mechanics. Who's with me?

u/seanmcarroll replied

Spoiler alert: the last paragraph of the acknowledgements reads as follows. "Thanks also to Jennifer for bringing into our lives Ariel and Caliban, the best writing-partner cats an author could ask for. No actual cats were subjected to thought experiments during the composition of this book."

Behind the scenesAsked about their own famous workr/seancarroll · 18 points as of Nov 2026Full thread ↗