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
I may have misjudged what is an appropriate size for a biscuit (banana for scale)
January 12, 2026 at 11:41 PM
I may have misjudged what is an appropriate size for a biscuit (banana for scale)
Reposted by Leo C. Stein
Suspect arrested in predawn fire that left parts of Mississippi’s largest synagogue in charred ruins
A fire heavily damaged Jackson’s only synagogue before dawn Saturday – the same house of worship that was firebombed by the Ku Klux Klan in 1967 because the rabbi had been an advocate for civil…
A fire heavily damaged Jackson’s only synagogue before dawn Saturday – the same house of worship that was firebombed by the Ku Klux Klan in 1967 because the rabbi had been an advocate for civil…
Suspect arrested in predawn fire that left parts of Mississippi’s largest synagogue in charred ruins
A fire heavily damaged Jackson’s only synagogue before dawn Saturday – the same house of worship that was firebombed by the Ku Klux Klan in 1967 because the rabbi had been an advocate for civil rights.
mississippitoday.org
January 11, 2026 at 3:07 AM
Suspect arrested in predawn fire that left parts of Mississippi’s largest synagogue in charred ruins
A fire heavily damaged Jackson’s only synagogue before dawn Saturday – the same house of worship that was firebombed by the Ku Klux Klan in 1967 because the rabbi had been an advocate for civil…
A fire heavily damaged Jackson’s only synagogue before dawn Saturday – the same house of worship that was firebombed by the Ku Klux Klan in 1967 because the rabbi had been an advocate for civil…
Reposted by Leo C. Stein
Reposted by Leo C. Stein
NEWS: In a heartbreaking video, after ICE shot and killed a woman in Minneapolis, a woman who was in the same SUV cries out: “They killed my wife. I don’t know what to do."
“We stopped to videotape, and they shot her in the head,” the distraught woman sobs.
www.advocate.com/news/minneso...
“We stopped to videotape, and they shot her in the head,” the distraught woman sobs.
www.advocate.com/news/minneso...
Distraught woman says ICE killed her wife in video after deadly Minneapolis shooting
“They killed my wife,” the distraught woman says, adding, “They shot her in the head.”
www.advocate.com
January 7, 2026 at 8:55 PM
NEWS: In a heartbreaking video, after ICE shot and killed a woman in Minneapolis, a woman who was in the same SUV cries out: “They killed my wife. I don’t know what to do."
“We stopped to videotape, and they shot her in the head,” the distraught woman sobs.
www.advocate.com/news/minneso...
“We stopped to videotape, and they shot her in the head,” the distraught woman sobs.
www.advocate.com/news/minneso...
Reposted by Leo C. Stein
"Meanwhile, witnesses said a doctor was at the scene and tried to help the woman who had been shot, but the ICE agents refused to let the doctor in to help. Up to 15 minutes later, an ambulance arrived but was blocked by ICE vehicles that had occupied the street."
www.fox9.com/news/minneap...
www.fox9.com/news/minneap...
Minneapolis ICE shooting: Eyewitness accounts contradict ICE statement
A woman was fatally shot by an ICE officer in Minneapolis Wednesday morning, but witness accounts contradict what federal officials say happened. Minneapolis Mayor Jacob Frey calls the claim the shoot...
www.fox9.com
January 7, 2026 at 8:49 PM
"Meanwhile, witnesses said a doctor was at the scene and tried to help the woman who had been shot, but the ICE agents refused to let the doctor in to help. Up to 15 minutes later, an ambulance arrived but was blocked by ICE vehicles that had occupied the street."
www.fox9.com/news/minneap...
www.fox9.com/news/minneap...
Reposted by Leo C. Stein
losing my mind at the "she should have followed directions" people
really? really? you're cool with "if you don't follow directions, they get to kill you"? that seems like a good state of affairs to you? that seems like how law enforcement ought to work: instant obeisance or death?
really? really? you're cool with "if you don't follow directions, they get to kill you"? that seems like a good state of affairs to you? that seems like how law enforcement ought to work: instant obeisance or death?
January 7, 2026 at 6:25 PM
losing my mind at the "she should have followed directions" people
really? really? you're cool with "if you don't follow directions, they get to kill you"? that seems like a good state of affairs to you? that seems like how law enforcement ought to work: instant obeisance or death?
really? really? you're cool with "if you don't follow directions, they get to kill you"? that seems like a good state of affairs to you? that seems like how law enforcement ought to work: instant obeisance or death?
Reposted by Leo C. Stein
From Doug Ford to Donald Trump, we see the endless pattern: conservatives cry government is broken and only a *businessman* can save it, elect a businessman who breaks the government further, then they sell it for parts and ensure it remains broken. Rinse, lather, repeat.
DOGE cut 7000 jobs at the Social Security Admin and closed 50 field offices, and now they’re struggling to respond to up to 6 million pending cases in its processing centers and 12 million transactions in its field offices.
Now they’ll say it’s broken and must be privatized.
Now they’ll say it’s broken and must be privatized.
December 30, 2025 at 7:46 PM
From Doug Ford to Donald Trump, we see the endless pattern: conservatives cry government is broken and only a *businessman* can save it, elect a businessman who breaks the government further, then they sell it for parts and ensure it remains broken. Rinse, lather, repeat.
If you see this, post a random fact about yourself:
I discovered the Kerr separatrix polynomial
arxiv.org/abs/1912.07609
I discovered the Kerr separatrix polynomial
arxiv.org/abs/1912.07609
December 28, 2025 at 1:34 AM
If you see this, post a random fact about yourself:
I discovered the Kerr separatrix polynomial
arxiv.org/abs/1912.07609
I discovered the Kerr separatrix polynomial
arxiv.org/abs/1912.07609
Reposted by Leo C. Stein
The U.S. government just banned five people from entering the country because it doesn’t like their speech. This ban, according to the State Department, is necessary to protect free speech.
If that sounds insane to you, congratulations on your reading comprehension.
If that sounds insane to you, congratulations on your reading comprehension.
Opinion | Marco Rubio is using real censorship to fight fake censorship
Mike Masnick: In the name of protecting free speech, the U.S. government just banned five Europeans from entering the country because it doesn’t like their speech.
www.ms.now
December 27, 2025 at 1:53 PM
The U.S. government just banned five people from entering the country because it doesn’t like their speech. This ban, according to the State Department, is necessary to protect free speech.
If that sounds insane to you, congratulations on your reading comprehension.
If that sounds insane to you, congratulations on your reading comprehension.
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: