Sean Carroll
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seanmcarroll.bsky.social
Sean Carroll
@seanmcarroll.bsky.social
Physics, philosophy, complexity. @jhuartssciences.bsky.social & @sfiscience.bsky.social. Host, #MindscapePodcast. Married to @jenlucpiquant.bsky.social.
Latest books: The Biggest Ideas in the Universe.
https://preposterousuniverse.com/
Pinned
Postdoc job! I expect to have an opening at Johns Hopkins for a postdoctoral researcher working somewhere in the broad realms of physics, philosophy, and complexity. Apply at Academic Jobs Online:

academicjobsonline.org/ajo/jobs/30496
Johns Hopkins University, Physics and Astronomy
Job #AJO30496, Postdoctoral Fellow in Foundations of Physics, Complexity, and Emergence, Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland, US
academicjobsonline.org
Watch out NBA!
Joel Embiid is officially AVAILABLE to make his return after missing nine straight games.

VJ Edgecombe is also AVAILABLE.

Andre Drummond is AVAILABLE as well. He misses no time.

Sixers starters vs. Atlanta:

Tyrese Maxey
VJ Edgecombe
Paul George
Dominick Barlow
Joel Embiid
November 30, 2025 at 10:57 PM
1988 interview with physicist Victor Weisskopf. We overlapped at MIT when he was emeritus and I was a postdoc, but I never really chatted with him (because I'm an idiot). In 1934 he and Wolfgang Pauli wrote the first paper insisting that everything is quantum fields!

www.youtube.com/watch?v=utZY...
Conversations with History: Victor F. Weisskopf
YouTube video by University of California Television (UCTV)
www.youtube.com
November 30, 2025 at 8:59 PM
This is the crux of the whole should-soldiers-disobey-unlawful-orders debate. When the system is working, commanders don't typically issue unlawful orders. And when they do it's certainly an enormous burden on the soldier to make a choice. But the current flood of unlawful orders changes everything.
Honestly, the entire thing strikes me as an example of terminal lawyer-brain. The truth is that the point at which a civilian authority is issuing manifestly unlawful orders, you've entered a state of exception and the truth is a soldier can end up being shot for obeying or refusing.
November 30, 2025 at 6:53 PM
Was able to see both One Battle After Another and Wake Up Dead Man this weekend. Two incredible movies, very different from each other, but both films that are easy to misinterpret.

Wake Up Dead Man does a great job at showing both religious and naturalist perspectives while being fair to both.
November 30, 2025 at 4:35 PM
I always delete political fundraising spam texts, but I only Report as Junk if the appeal is especially badly written.
November 29, 2025 at 2:57 PM
But I was told that the best way of dealing with bullies was to give them your lunch money so they wouldn't hit you any more.
November 29, 2025 at 2:02 PM
The most useful watch video I've ever seen. First time I was really able to see the lure of a Breitling.

www.youtube.com/watch?v=4RY0...
The sketchiest watches for the sketchiest people
YouTube video by This Watch, That Watch
www.youtube.com
November 28, 2025 at 2:59 PM
The Most Interesting Cat In the World

Photo by @jenlucpiquant.bsky.social
November 28, 2025 at 2:20 PM
Annual Thanksgiving blog post! This year we are giving thanks for "information."

www.preposterousuniverse.com/blog/2025/11...
November 27, 2025 at 3:17 PM
Reposted by Sean Carroll
There's a classic joke list of how different programming language handle shooting yourself in the foot.

In the spirit of that, I'm going to make a collection of how the current media landscape would handle Trump shooting himself in the foot.

I encourage you to submit your own.
www.eecs.yorku.ca
November 26, 2025 at 7:10 PM
Reposted by Sean Carroll
Hey guys! I'm having a sale on all my silk #sciart scarves and ties 😊 🐡🧪🧠
Banish the Boring and Beige
This year, give gorgeous, geeky gifts
open.substack.com
November 26, 2025 at 4:35 PM
An underappreciated aspect is that many people *want* to go through life with clearly-defined roles for everything. Much less anxiety-inducing than making choices and running the risk of ridicule.

Liberal individualism is one of the best things to ever happen, but some people feel it as a burden.
So many men go through life like that. You can play poker because it's right-coded, you can't enjoy fruity alcoholic drinks because they're women-coded, you can't lick an ice cream cone because it's gay-coded. All day, every day, choosing and judging things based on coding for narrow norms.
November 26, 2025 at 4:37 PM
"The Many Hidden Worlds of Quantum Mechanics," my lecture series for the Great Courses (24 half-hour lectures), is still available on Prime video for a few days! Tell your family that watching football on Thanksgiving is hopelessly uncool.

www.amazon.com/gp/video/det...
November 26, 2025 at 2:14 PM
I need Tim Walz to personally knock on a bunch of people’s doors and tell them to stop being weird.
November 25, 2025 at 5:09 PM
Definitive Stars Wars ranking:

1. Yojimbo
2. The Good, the Bad, and the Ugly
3. Metropolis
4. Casablanca
5. Spaceballs
November 24, 2025 at 10:19 PM
Gonna be really upset if my ultimate demise results from my inability to remember which thing I'm supposed to do if it's a black bear, and which I'm supposed to do if it's a grizzly bear.
November 24, 2025 at 5:11 PM
It's frustrating that we are getting technologies that really will transform our lives, and we should be thinking carefully about what that means, but the possibility of thoughtful discussion is being squelched by a stream of soul-crushing visions and wild hyperbole coming from Silicon Valley.
Everything about this might be the saddest thing I’ve ever seen
November 24, 2025 at 2:47 PM
I'm a huge fan of Liberal Currents. The writers there offer an ideal combination of an intellectual defense of liberal values with a clear-eyed view of the challenges of the current political moment.
Today we are launching what we hope will be a transformative fundraising push.

We are determined to increase our reach so we can compete with voices who are less than fully committed to, or who outright oppose, liberal values.

Help us do it: www.gofundme.com/f/the-libera...
Donate to The Liberal Currents Startup Fund, organized by Adam Gurri
To fight fascism we need opposition media with a backbone. Liberal Currents is that. Help… Adam Gurri needs your support for The Liberal Currents Startup Fund
www.gofundme.com
November 24, 2025 at 2:36 PM
Mindscape 336 | Anil Ananthaswamy @anilananth.bsky.social on the Mathematics of Neural Nets and AI. Everyone is talking about AI these days, why not impress your friends with some math? #MindscapePodcast

www.preposterousuniverse.com/podcast/2025...
November 24, 2025 at 1:11 PM
Hmm, this could be a whole cinematic multiverse. Falling Down triggered by Cloudflare going down; Falling Down trying to get two-factor authentication to work; Falling Down trying to get an iTunes playlist to play on Sonos...
any filmmakers on here interested in remaking Falling Down (1993) but instead of a traffic jam on a hot day the catalyst is trying to log in to editorial manager on literally any sort of day whatsoever?
November 23, 2025 at 1:08 PM
One of the great things about being a scientist with an interview-style podcast is that I get to "play dumb" and ask questions that I'm supposed to know the answer to. Nobody has to know whether I actually do know the answer.
November 22, 2025 at 4:32 PM
Reposted by Sean Carroll
It's Friday, and apparently bluesky is ready for this fun revelation:

Dinosaurs lived on the other side the Galaxy.
November 21, 2025 at 5:11 PM
Reposted by Sean Carroll
November 21, 2025 at 9:45 PM