Leo C. Stein
@duetosymmetry.com
Physics Prof @ U of MS. Sloan Fellow. Black holes, gravitational waves, general relativity & beyond. Formerly Caltech MIT Cornell. Need thin pizza + fruity coffee. He/him
🌐 https://duetosymmetry.com/
@duetosymmetry everywhere
🌐 https://duetosymmetry.com/
@duetosymmetry everywhere
Reposted by Leo C. Stein
ICE detain father shopping on Christmas Eve—then steal his family's groceries.
Then 3 agents divvy up his paid for food—taking what they want for themselves.
"Can I just get the wife's number to call and let her know?" woman asks.
"No, guess he should've complied," agent says.
Yakima, Washington
Then 3 agents divvy up his paid for food—taking what they want for themselves.
"Can I just get the wife's number to call and let her know?" woman asks.
"No, guess he should've complied," agent says.
Yakima, Washington
December 25, 2025 at 7:03 PM
ICE detain father shopping on Christmas Eve—then steal his family's groceries.
Then 3 agents divvy up his paid for food—taking what they want for themselves.
"Can I just get the wife's number to call and let her know?" woman asks.
"No, guess he should've complied," agent says.
Yakima, Washington
Then 3 agents divvy up his paid for food—taking what they want for themselves.
"Can I just get the wife's number to call and let her know?" woman asks.
"No, guess he should've complied," agent says.
Yakima, Washington
Throwback to some silly xmas/Newtonmas drawings I made a few years ago (Isaac Newton was born on Dec 25 under the Julian calendar in use in England at the time of his birth)
December 26, 2025 at 6:04 PM
Throwback to some silly xmas/Newtonmas drawings I made a few years ago (Isaac Newton was born on Dec 25 under the Julian calendar in use in England at the time of his birth)
Reposted by Leo C. Stein
Per NY Times’s Michael Grynbaum on X, this is Sharyn Alfonsi’s email to her “60 Minutes” colleagues in full:
December 22, 2025 at 3:37 AM
Per NY Times’s Michael Grynbaum on X, this is Sharyn Alfonsi’s email to her “60 Minutes” colleagues in full:
Reposted by Leo C. Stein
How long before program managers are replaced by loyalist lackeys with industry connections and no scientific background?
December 17, 2025 at 6:37 PM
How long before program managers are replaced by loyalist lackeys with industry connections and no scientific background?
Reposted by Leo C. Stein
Achilles Papapetrou, a giant of the field, was *furious* when he saw his colleagues ignoring Kerr's announcement.
He stood and demanded the crowd's attention, noting he had tried and failed to solve the problem for 30 years. Did they not understand they were hearing about a major discovery? (7/n)
He stood and demanded the crowd's attention, noting he had tried and failed to solve the problem for 30 years. Did they not understand they were hearing about a major discovery? (7/n)
December 16, 2025 at 4:39 PM
Achilles Papapetrou, a giant of the field, was *furious* when he saw his colleagues ignoring Kerr's announcement.
He stood and demanded the crowd's attention, noting he had tried and failed to solve the problem for 30 years. Did they not understand they were hearing about a major discovery? (7/n)
He stood and demanded the crowd's attention, noting he had tried and failed to solve the problem for 30 years. Did they not understand they were hearing about a major discovery? (7/n)
Reposted by Leo C. Stein
Hot take time: (science) journalism's expectation of infallibility sets it up to fail.
Rare corrections should be an expected part of this work — not a reason to melt onto the floor in a puddle of shame.
Science learns from mistakes, and scicomm is more trustworthy when it reflects that.
Rare corrections should be an expected part of this work — not a reason to melt onto the floor in a puddle of shame.
Science learns from mistakes, and scicomm is more trustworthy when it reflects that.
December 15, 2025 at 8:56 AM
Hot take time: (science) journalism's expectation of infallibility sets it up to fail.
Rare corrections should be an expected part of this work — not a reason to melt onto the floor in a puddle of shame.
Science learns from mistakes, and scicomm is more trustworthy when it reflects that.
Rare corrections should be an expected part of this work — not a reason to melt onto the floor in a puddle of shame.
Science learns from mistakes, and scicomm is more trustworthy when it reflects that.
Reposted by Leo C. Stein
The RFK, jr effect.
December 13, 2025 at 9:40 PM
The RFK, jr effect.
Reposted by Leo C. Stein
Lawless, criminal behavior
December 13, 2025 at 7:39 AM
Lawless, criminal behavior
Reposted by Leo C. Stein
When the winner of the Nobel peace prize smuggled herself over the water and out of Venezuela to attend the ceremony in Oslo this week, her allies called the Pentagon to ask them not to arbitrarily murder her. www.wsj.com/world/americ...
December 11, 2025 at 2:01 PM
When the winner of the Nobel peace prize smuggled herself over the water and out of Venezuela to attend the ceremony in Oslo this week, her allies called the Pentagon to ask them not to arbitrarily murder her. www.wsj.com/world/americ...
Reposted by Leo C. Stein
Slides from my American Inst. of Math @caltech.edu #MetaMath workshop talk on "Prestige, representation, and the spread of scientific ideas" earlier this week aaronclauset.github.io/slides/Claus...
December 11, 2025 at 3:32 PM
Slides from my American Inst. of Math @caltech.edu #MetaMath workshop talk on "Prestige, representation, and the spread of scientific ideas" earlier this week aaronclauset.github.io/slides/Claus...
Reposted by Leo C. Stein
It’s really demoralizing how many colleagues are using AI.
Your job is literally to use your brain- your extremely unique, highly trained brain 😭
Your job is literally to use your brain- your extremely unique, highly trained brain 😭
December 11, 2025 at 6:15 PM
It’s really demoralizing how many colleagues are using AI.
Your job is literally to use your brain- your extremely unique, highly trained brain 😭
Your job is literally to use your brain- your extremely unique, highly trained brain 😭
No question: Misner, Thorne, and Wheeler
December 10, 2025 at 10:11 PM
No question: Misner, Thorne, and Wheeler
Sharing to the lists! ⚛️🧪🔭
Two of our papers on black-hole scattering have been published in Physical Review D! 🎉
To celebrate, here is a visualisation of the gravitational wave emission from a close scattering encounter: youtu.be/u9wBZEYfyAM
Paper 1: doi.org/10.1103/p6fx...
Paper 2: doi.org/10.1103/bdsb...
To celebrate, here is a visualisation of the gravitational wave emission from a close scattering encounter: youtu.be/u9wBZEYfyAM
Paper 1: doi.org/10.1103/p6fx...
Paper 2: doi.org/10.1103/bdsb...
December 10, 2025 at 2:58 PM
Sharing to the lists! ⚛️🧪🔭
Reposted by Leo C. Stein
Two of my papers have been published in Physical Review D!
See this visualisation of SXS:BBH:4292 that I made to celebrate! 🎉
See this visualisation of SXS:BBH:4292 that I made to celebrate! 🎉
Two of our papers on black-hole scattering have been published in Physical Review D! 🎉
To celebrate, here is a visualisation of the gravitational wave emission from a close scattering encounter: youtu.be/u9wBZEYfyAM
Paper 1: doi.org/10.1103/p6fx...
Paper 2: doi.org/10.1103/bdsb...
To celebrate, here is a visualisation of the gravitational wave emission from a close scattering encounter: youtu.be/u9wBZEYfyAM
Paper 1: doi.org/10.1103/p6fx...
Paper 2: doi.org/10.1103/bdsb...
December 10, 2025 at 9:48 AM
Two of my papers have been published in Physical Review D!
See this visualisation of SXS:BBH:4292 that I made to celebrate! 🎉
See this visualisation of SXS:BBH:4292 that I made to celebrate! 🎉
Extremely valuable (and justified) critique of using LLMs in scientific research from @postquantum.bsky.social:
It was accepted (with revisions)😀. I've updated my blog post on Science Slop superposer.substack.com/p/we-are-in-...
6/6
6/6
We are in the era of Science Slop
(and it's exciting)
superposer.substack.com
December 9, 2025 at 7:01 PM
Extremely valuable (and justified) critique of using LLMs in scientific research from @postquantum.bsky.social:
I am pleased to announce that I have been awarded the coveted NASCAR Biochemistry Breakthrough Medal
I am pleased to announce that I have been awarded the coveted NFL Poetry Prize.
December 5, 2025 at 8:13 PM
I am pleased to announce that I have been awarded the coveted NASCAR Biochemistry Breakthrough Medal
Reposted by Leo C. Stein
I am pleased to announce that I have been awarded the coveted NFL Poetry Prize.
December 5, 2025 at 7:41 PM
I am pleased to announce that I have been awarded the coveted NFL Poetry Prize.
Reposted by Leo C. Stein
I kind of like the idea that FIFA is operating as a shadow Nobel Prize committee. Altman gets the FIFA prize for economics. Those Russians who built the robot that flamed out onstage get the FIFA prize for physics. Nuzzi gets the FIFA prize for literature.
December 5, 2025 at 5:52 PM
I kind of like the idea that FIFA is operating as a shadow Nobel Prize committee. Altman gets the FIFA prize for economics. Those Russians who built the robot that flamed out onstage get the FIFA prize for physics. Nuzzi gets the FIFA prize for literature.
Reposted by Leo C. Stein
Agents in Key Largo, Florida ripped this woman wearing medical scrubs out of her car as she screamed she is a US citizen. Agents cuffed her and put her in one of their cars.
She was eventually let go, per David Goodhue of the Miami Herald, who also took this footage:
She was eventually let go, per David Goodhue of the Miami Herald, who also took this footage:
December 3, 2025 at 5:20 PM
Agents in Key Largo, Florida ripped this woman wearing medical scrubs out of her car as she screamed she is a US citizen. Agents cuffed her and put her in one of their cars.
She was eventually let go, per David Goodhue of the Miami Herald, who also took this footage:
She was eventually let go, per David Goodhue of the Miami Herald, who also took this footage:
Reposted by Leo C. Stein
Paper day!
Paper on the arXiv today that cites the BHPToolkit: "Gravitational radiation from hyperbolic orbits: comparison between self-force, post-Minkowskian, post-Newtonian, and numerical relativity results" by Niels Warburton, arxiv.org/abs/2512.02274
December 3, 2025 at 5:07 PM
Paper day!
Thanks to the folks at UMiss news for covering our latest Phys Rev Letter!
News: olemiss.edu/news/2025/12...
The research article: journals.aps.org/prl/abstract...
My earlier explainer thread: bsky.app/profile/duet...
🧪⚛️🔭
News: olemiss.edu/news/2025/12...
The research article: journals.aps.org/prl/abstract...
My earlier explainer thread: bsky.app/profile/duet...
🧪⚛️🔭
December 3, 2025 at 11:25 PM
Thanks to the folks at UMiss news for covering our latest Phys Rev Letter!
News: olemiss.edu/news/2025/12...
The research article: journals.aps.org/prl/abstract...
My earlier explainer thread: bsky.app/profile/duet...
🧪⚛️🔭
News: olemiss.edu/news/2025/12...
The research article: journals.aps.org/prl/abstract...
My earlier explainer thread: bsky.app/profile/duet...
🧪⚛️🔭
Reposted by Leo C. Stein
JUST IN: Mike Johnson plans to swear in Rep.-elect Matt Van Epps on Thursday — less than two days after he won the TN-07 special election.
As a reminder, it took Johnson 50 days to swear in Democratic Rep. Adelita Grijalva.
As a reminder, it took Johnson 50 days to swear in Democratic Rep. Adelita Grijalva.
December 3, 2025 at 8:31 PM
JUST IN: Mike Johnson plans to swear in Rep.-elect Matt Van Epps on Thursday — less than two days after he won the TN-07 special election.
As a reminder, it took Johnson 50 days to swear in Democratic Rep. Adelita Grijalva.
As a reminder, it took Johnson 50 days to swear in Democratic Rep. Adelita Grijalva.
Seven (7) years after moving to Mississippi, I finally breaded and fried some chicken
December 3, 2025 at 1:48 AM
Seven (7) years after moving to Mississippi, I finally breaded and fried some chicken
December 2, 2025 at 8:57 PM
Reposted by Leo C. Stein
![[Scene is a kitchen - a middle aged woman called JANET is boiling peas at the stove. A younger more colourfully dressed woman named LIZ approached her.]
JANET:
Ugh...
LIZ:
What's up?
JANET:
I am so bored of cooking peas!
LIZ:
Have you tried...
AI peas?
JANET:
AI peas?
LIZ:
They're peas with AI!
[Liz holds up to us a packet of peas labelled: Pea-i AI - Peas with AI].
LIZ:
Al-powered peas harness the potential of your peas
JANET:
What
LIZ [Now a voiceover as we cut to a whizzy technology diagram of peas all connected by meaningless dotted lines]
Why not take your peas to the next level with Al Peas' new Al tools to power your peas?
[Show a techno diagram of a pea with a label reading 'AI' pointing to a random zone in it]
LIZ:
Each pea has Al in a way we haven't quite worked out yet but it's fine
[Show Janet and Liz now in a Matrix-style world of peas]
LIZ:
With Al peas you can supercharge productivity and make AI work for your peas!
JANET:
What
LIZ:
Shut up
LIZ:
Our game-changing Pea-Al gives you the freedom to unlock the potential of the power of the future of your peas workflow
From opening the bag of peas
to boiling the peas
to eating the peas
To spending millions on adding Al to the peas and then having to work out what that even means.
JANET:
Is it really necessary to-
LIZ [Grabbing Janet by the collar]:
THE PEAS HAVE GOT AI, JANET
[Cut to an advert ending screen, with the bag of peas and the slogan:
AI PEAS: Just 'Peas' for god's sake buy the AI peas.
[Ends]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:4m3we4apbjayclzcnhwe3pfp/bafkreiayqa37f7kik7l7s7fbtfp2sir5ckb662ry2lylinyjrfa2rkvvka@jpeg)