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Ben Brubaker

@benbenbrubaker.bsky.social
1.2K followers 592 following 164 posts

Computer science staff writer @quantamagazine.org, ex-physicist. More about me at benbrubaker.com. Banner art by Nico Roper — find more of their work at nicoroper.com. [Obligatory disclaimer about views being my own.]

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Reposted by Ben Brubaker
William B. Fuckley @opinionhaver.bsky.social · 25/09/2026
Very Greek tragedy thing about LLMs is that they simulataneously provide clear evidence that writing is extremely important to cognition while they also cause people to stop doing it.
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Ben Brubaker @benbenbrubaker.bsky.social · 11/09/2026
Recent events have significantly increased my alarm level about AI risks. This thread is for people who are still more skeptical. Here are some reasonable opinions you might hold that are entirely compatible with "swarms of AI agents pose qualitatively new risks even without intentional misuse:"
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Ben Brubaker @benbenbrubaker.bsky.social · 28/08/2026
My latest for @quantamagazine.org is something a bit different from my usual fare: a first-person essay exploring what theoretical computer science has to do with computers.
quantamagazine.org
Does Computer Science Need Computers? | Quanta Magazine
The theoretical side of the field doesn’t require computing machines. But many questions would never have been posed without them.
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Jordana Cepelewicz @jordanacep.bsky.social · 23/07/2026
Yu Deng's path to math, and to the Fields Medal, took him through the worlds of competitive Go and classical Chinese poetry. I had the privilege of profiling him for @quantamagazine.bsky.social. www.quantamagazine.org/yu-deng-wins...
quantamagazine.org
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Ben Brubaker @benbenbrubaker.bsky.social · 23/07/2026
Today, Shayan Oveis Gharan was awarded the IMU Abacus Medal, one of the highest honors in theoretical computer science. Read about his life and work in my profile for @quantamagazine.bsky.social:
quantamagazine.org
Shayan Oveis Gharan Wins 2026 IMU Abacus Medal | Quanta Magazine
Shayan Oveis Gharan has won the Abacus Medal for using tools from across mathematics to boost the power of algorithms.
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Ben Brubaker @benbenbrubaker.bsky.social · 06/07/2026
After 20 years, researchers finally have strong evidence that “quantum proofs” are more powerful than ordinary classical ones. The results suggest that at least in computation, there’s no way around the complexity of the quantum world. Read more in @quantamagazine.bsky.social:
quantamagazine.org
Researchers Reveal the Power of ‘Quantum Proofs’ | Quanta Magazine
When checking that solutions to certain problems are correct, it turns out, you can’t get around the inherent complexity of the quantum world.
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Ben Brubaker @benbenbrubaker.bsky.social · 11/05/2026
Out today in @quantamagazine.bsky.social — my latest dispatch from the very meta, mind-bending corners of CS theory research. It's about a new approach to cryptography in which secrecy stems from Gödel-esque unprovable statements!
quantamagazine.org
How Unknowable Math Can Help Hide Secrets | Quanta Magazine
A graduate student recently harnessed the complexity of mathematical proofs to create a powerful new tool in cryptography.
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Matt Negrin still host of Hardball on MSNBC @mattnegrin.bsky.social · 05/04/2026
The New York Times deleted Trump’s “open the fuckin’ strait” line to make him look less insane Their write-up falsely says his post says only “Tuesday will be Power Plant Day, and Bridge Day, all wrapped up in one, in Iran. There will be nothing like it!!!” and “Praise be to Allah”
NYT: Iran War Live Updates: Trump Escalates Threat to Hit Iranian Power Plants After U.S. Rescues Downed Airman
President Trump used an expletive-laden social media post to taunt Iranian leaders, saying that the United States would attack if they did not fully reopen the Strait of Hormuz.  NYT: President Trump on Sunday escalated his threats to bomb Iranian power plants within the next two days and taunted the country’s leaders in an expletive-laden social media post.

Mr. Trump, seemingly emboldened by the successful U.S. rescue of an American airman in Iran over the weekend, issued a new ultimatum to Iran to end its chokehold over the Strait of Hormuz, a major Persian Gulf waterway for the transport of oil and gas, by Apr. 6.

If Iran’s government did not, he said, U.S. forces would target the country’s energy infrastructure, which supplies power for millions of civilians.

“Tuesday will be Power Plant Day, and Bridge Day, all wrapped up in one, in Iran. There will be nothing like it!!!” Mr. Trump wrote on social media. The president has previously postponed his deadline to attack twice and the Omani foreign ministry said on Sunday that officials had discussed how to reopen the Strait of Hormuz with Iranian counterparts without reaching a definitive agreement.“Praise be to Allah,” Mr. Trump added, before signing off in all caps.

Iran has threatened to retaliate by intensifying its attacks on critical infrastructure in Israel and Arab states that are allied with the United States. An escalation could further derail the lives of civilians throughout the region and add to worries about the global economy, which has been rattled by soaring energy prices since the start of the war.

Over the past two days, the U.S. military has been in a race with Iranian armed forces to find the missing airman after an F-15E jet was shot down over Iran on Friday, in the first known instance of a U.S. combat aircraft since the start of the war.

The plane’s pilot was quickly rescued. But a second officer was stranded in Iran and injured in the incident. American commandoes found the airman deep inside Iranian territory under the cover of darkness.
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Will Stancil @whstancil.bsky.social · 05/04/2026
This Reddit post is formatted like a joke but it’s actually a very dry recitation - at times, direct quotes - of America’s public war strategy over the last month. This can’t go on. This is deranged. Impeach and imprison.
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Hannah Waters @hanner.bsky.social · 02/04/2026
Quanta has been nominated for a Webby (Best Individual Editorial Feature - Media Company) for our series "How We Came To Know Earth"! Help us win by voting here: vote.webbyawards.com/PublicVoting... Explore the series here: www.quantamagazine.org/how-we-came-...
vote.webbyawards.com
Vote for the best of the internet
I just voted in The Webby People's Voice Awards and checked my voter registration.
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rev. howard arson @theophite.bsky.social · 03/04/2026
the Democrats need to announce that anyone who drops a bomb on Iranian civilian infrastructure will die in prison
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jamelle @jamellebouie.net · 25/03/2026
the only thing that appears to give our aging, rapidly declining ruler meaning in his life is his ability to inflict death and suffering on others www.nbcnews.com/politics/whi...
nbcnews.com
Inside Trump's daily video montage briefing on the Iran war
The montage, which typically runs for about two minutes, has raised concerns among some of the president’s allies that he may not be receiving the complete picture of the war.
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southpaw @nycsouthpaw.bsky.social · 18/03/2026
call me old fashioned but I don’t think anyone should have to trade for “no deporting US citizens” we should get that one for free you know
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Ben Brubaker @benbenbrubaker.bsky.social · 18/03/2026
It's not often that I do breaking news! Today, Charles Bennett and Gilles Brassard received the Turing Award for helping lay the foundations of quantum information science. Read more in @quantamagazine.bsky.social!
quantamagazine.org
Quantum Cryptography Pioneers Win Turing Award | Quanta Magazine
Charles Bennett and Gilles Brassard were recognized for their foundational work in quantum information science.
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Will Stancil @whstancil.bsky.social · 11/03/2026
We didn't go to war for any reason we can articulate, we didn't plan for the most obvious Iranian countermeasures that have been predicted for half a century, and we forgot an exit strategy for if the thing dragged on more than ONE WEEK. It was literally "Trump wants to do Venezuela everywhere."
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Micah @rincewind.run · 09/03/2026
everyone is extraordinarily desperate to pretend that Donald Trump is a coherent individual with a real plan who understands what is happening in the world and none of that is true
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ghost malone ergo propter bones @proptermalone.bsky.social · 06/03/2026
it's insane that my country's current position is that, if we don't like the leader of a sovereign nation, not only do we get to kill them we get to pick their successor
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Ben Brubaker @benbenbrubaker.bsky.social · 06/03/2026
"Special Envoy for the Shield" as a job title sounds approximately as plausible as "Secretary of the Hook:"
clickhole.com
Shaking Up Washington: Donald Trump Just Appointed A Cloaked Man As Secretary Of The Hook
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southpaw @nycsouthpaw.bsky.social · 04/03/2026
the kind of thing that gets played at a war crimes trial
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mark belan | science illustrator + info designer @markabelan.bsky.social · 23/02/2026
Did you know that infinity comes in different "sizes"? "Bigger" and "smaller" descriptions of infinity exist! Seems paradoxical, right? How can an endless concept ever have a defined size? I helped visualize a story describing this. Check it out here! www.quantamagazine.org/how-can-infi...
quantamagazine.org
How Can Infinity Come in Many Sizes? | Quanta Magazine
Intuition breaks down once we’re dealing with the endless. To begin with: Some infinities are bigger than others.
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Ben Brubaker @benbenbrubaker.bsky.social · 24/02/2026
In my recent story about failure modes of algorithmic pricing, I quoted @jasonhartline.bsky.social arguing that the specific example I focused on shouldn't count as algorithmic collusion. Here's a blog post in which he makes that argument in more detail, for those who are curious about this debate:
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Max Kennerly @maxkennerly.bsky.social · 19/02/2026
Like with using children as bait and eating at a restaurant then kidnapping the people who prepared it, ICE is routinely breaking taboos that have been part of human civilization since before recorded history.
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Ben Brubaker @benbenbrubaker.bsky.social · 17/02/2026
How can we make sense of computational problems that we don’t even have the language to describe? I spoke to @henryyuen.bsky.social about what’s missing from the standard approach to quantum complexity theory — read more in @quantamagazine.bsky.social!
quantamagazine.org
A New Complexity Theory for the Quantum Age | Quanta Magazine
Henry Yuen is developing a new mathematical language to describe problems whose inputs and outputs aren’t ordinary numbers.
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Colin Kennedy @ck3po.bsky.social · 28/01/2026
This is a scheduled pogrom
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Will Stancil @whstancil.bsky.social · 24/01/2026
in case you're curious about how angry Minnesota is about ICE, it was -20 today
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Minnesota Star Tribune @startribune.com · 22/01/2026
This video filmed by Ben Luhmann shows the moment a federal agent sprayed chemical irritants directly into a man's face in south Minneapolis. Three agents already had the man pinned to the ground when a fourth agent walked up and sprayed the irritants.
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Ben Brubaker @benbenbrubaker.bsky.social · 16/01/2026
What can computer science can tell us about the best way to store stuff? A partial answer in this short explainer about data structures — my latest for @quantamagazine.bsky.social
quantamagazine.org
Why There’s No Single Best Way To Store Information | Quanta Magazine
The math of data structures helps us understand how different storage systems come with different trade-offs between resources such as time and memory.
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Ben Brubaker @benbenbrubaker.bsky.social · 16/01/2026
I love how local resistance to ICE thugs has highlighted (among many other more important things) that the Honda Fit is the best car of all time.
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Popehat @kenwhite.bsky.social · 13/01/2026
ICE are thug scum.
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ghost malone ergo propter bones @proptermalone.bsky.social · 09/01/2026
one very obvious best-practice for living with people who are different from you is: do not shoot them in the face
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Ben Collins @bencollins.bsky.social · 07/01/2026
Absolutely horrific details about an ICE shooting in Minneapolis. A witness says a woman was trying to drive away from an ICE operation and the ICE agent "reached across the hood of the car and shot her in the face like three, four times." Bovino was there. www.mprnews.org/story/2026/0...
Emily Heller lives near 33rd and Portland and said she woke up to a commotion outside her home. She said she saw a car blocking traffic on Portland Avenue that appeared to be part of a protest against federal law enforcement operations.

Heller said she heard ICE agents telling the driver, a woman, to “get out of here.”

“She was trying to turn around, and the ICE agent was in front of her car, and he pulled out a gun and put it right in — like, his midriff was on her bumper — and he reached across the hood of the car and shot her in the face like three, four times,” Heller said.

Heller said it appeared the woman then accelerated and traveled about 100 feet before striking a utility pole and some other vehicles. She could be seen slumped over inside her car.
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Ben Brubaker @benbenbrubaker.bsky.social · 07/01/2026
Speaking of Plato — the latest from the stalwart defenders of western civilization against the excesses of woke postmodernism!
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Ben Brubaker @benbenbrubaker.bsky.social · 07/01/2026
New story by me in @quantamagazine.bsky.social unpacking the provocatively named "Platonic representation hypothesis." In what sense, and to what degree, are different AI models are growing more similar?
quantamagazine.org
Distinct AI Models Seem To Converge On How They Encode Reality | Quanta Magazine
Is the inside of a vision model at all like a language model? Researchers argue that as the models grow more powerful, they may be converging toward a singular “Platonic” way to represent the world.
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Ben Brubaker @benbenbrubaker.bsky.social · 27/12/2025
We have two job openings at Quanta, for a math writer and a senior editor! More info below:
simonsfoundation.wd1.myworkdayjobs.com
The Simons Foundation is a private foundation in New York City whose mission is to advance the frontiers of research in mathematics and the basic sciences. Founded in 1994 by Jim and Marilyn Simons, the foundation supports transformative science through grantmaking, in-house research and public engagement. The Simons Foundation provides grants in autism science and neuroscience; life sciences; mathematics and physical sciences; and science, society and culture. The foundation’s in-house research division, the Flatiron Institute, develops and deploys computational methods to advance basic scientific research. Visit the Simons Foundation career page to learn more Salary and Benefits In addition to competitive salaries, the Simons Foundation provides employees with an outstanding benefits package. Our Commitment to Expanding Pathways to Science & Opportunities for All: Many of the greatest ideas and discoveries come from a diverse mix of minds, backgrounds, and experiences. The Simons Foundation is committed to advancing basic science and mathematics to benefit humankind and expand our collective understanding of our world. As part of our mission, we support partners, programs, and initiatives that seek to broaden the scientific community and open pathways to science and mathematics careers. The Simons Foundation provides equal opportunities to all applicants without regard to race, religion, color, age, sex, pregnancy, national origin, sexual orientation, gender identity, genetic disposition, neurodiversity, disability, veteran status, or any other protected category under federal, state, and local law. E-Verify Simons Foundation participates in E-Verify. Learn more here.
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Ben Brubaker @benbenbrubaker.bsky.social · 11/12/2025
Per Barbara Tuchman's A Distant Mirror, brigands in 14th-century France would routinely surround towns and threaten to attack unless they were both paid off and absolved of their sins by the local clergy.
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Dr. Drew Brayshaw 🌊🪨 @drewbrayshaw.bsky.social · 03/12/2025
I love to read Quanta Magazine articles, not only for the information, but also for the writing, chock full of potential pull quotes, which in this one include a mathematician calling something a “classic banger of a theorem” TBH I like the photos of the scientists/maths doers. We aren't photogenic
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Olúfẹ́mi O. Táíwò @olufemiotaiwo.bsky.social · 04/12/2025
The "myth of consensual sex" meme, where in the original a hugging couple says "I consent" next to a picture of Jesus and the bottom caption "isn't there somebody you forgot to ask?". The word "sex" is replaced with "induction", the man in the couple is replaced with an image of the sun and says "I rise", the woman's text is replaced with "I assume you always will", and the picture of Jesus is replaced with a picture of David Hume.
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southpaw @nycsouthpaw.bsky.social · 02/12/2025
I want us to hang on to the fact that the people who were murdered were just civilians out in boats, most likely fishermen, who had never even heard the sketchy conclusions of American officials for which they were executed, much less had a chance to defend themselves.
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Ben Brubaker @benbenbrubaker.bsky.social · 01/12/2025
What does counting pigeons have to do with Turing machines? More than you might think. In @quantamagazine.bsky.social, my latest foray into the wild world of meta-complexity, this time through the lens of mathematical logic:
quantamagazine.org
‘Reverse Mathematics’ Illuminates Why Hard Problems Are Hard | Quanta Magazine
Researchers have used metamathematical techniques to show that certain theorems that look superficially distinct are in fact logically equivalent.
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"Online Rent-a-Sage" Bret Devereaux @bretdevereaux.bsky.social · 28/11/2025
If Trump proactively pardons Hegseth, the solution is to signal either to the ICC or the country of origin of the murdered men that we will honor extradition requests on this point. And then, in something of an irony, Noem him out of the country before anyone can react.
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William B. Fuckley @opinionhaver.bsky.social · 07/11/2025
emotive butlerian jihad now: the machine may not wear a human face.
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Dan Garisto @dangaristo.bsky.social · 30/10/2025
For the uninitiated: The busy beaver problem is an extremely compelling, Conway-esque expedition into the daunting wilds of the finite, and you couldn't ask for a better guide than Ben. Strongly recommend.
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Ben Brubaker @benbenbrubaker.bsky.social · 30/10/2025
Does riffing on the title of the transformer paper boost citations? Somebody should look into it, and if the answer is yes, write a paper called "'All you need' is all you need"
arxiv.org
Anti-concentration is (almost) all you need
Until very recently, it was generally believed that the (approximate) 2-design property is strictly stronger than anti-concentration of random quantum circuits, mainly because it was shown that the la...
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Ben Brubaker @benbenbrubaker.bsky.social · 27/10/2025
I published a new post on my rarely updated personal blog! It's a sequel of sorts to my Quanta coverage of the Busy Beaver game, focusing on a particularly fearsome Turing machine known by the awesome name Antihydra.
benbrubaker.com
Why Busy Beaver Hunters Fear the Antihydra
In which I explore the biggest barrier in the busy beaver game. What is Antihydra, what is the Collatz conjecture, how are they connected, and what makes them so daunting?
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Ben Brubaker @benbenbrubaker.bsky.social · 22/10/2025
In the US, regulators try to ensure fair prices by banning collusion. But what happens when prices are set by algorithms? New story by me in @quantamagazine.bsky.social about a surprising way that seemingly benign pricing algorithms can go awry:
quantamagazine.org
The Game Theory of How Algorithms Can Drive Up Prices | Quanta Magazine
Recent findings reveal that even simple pricing algorithms can make things more expensive.
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Ben Brubaker @benbenbrubaker.bsky.social · 21/10/2025
In light of the 2022 reformulation of C.P. Snow's Two Cultures as wordcels vs shape rotators, it is very funny that LLMs are (up to nonlinearities) quite literally word rotators.
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Ben Brubaker @benbenbrubaker.bsky.social · 28/09/2025
This is in the running for my least favorite item of all time.
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Wonkish @wonkish.bsky.social · 28/09/2025
I prefer Friend's competition:
enemy.lol
Enemy
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Ben Brubaker @benbenbrubaker.bsky.social · 24/09/2025
I really enjoyed talking to @nsaphra.bsky.social about her thoughts on what much language model interpretability research misses. My latest in @quantamagazine.bsky.social:
quantamagazine.org
To Understand AI, Watch How It Evolves | Quanta Magazine
Naomi Saphra thinks that most research into language models focuses too much on the finished product. She’s mining the history of their training for insights into why these systems work the way they d...
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