Posting about AI, philosophy, politics, climate, logic, music, film. Professor of Philosophy, Logic, and AI at Utrecht University. I ignore anonymous accounts.
Amsterdam, Nederland
Joined April 2012
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In our unfolding battle with AI, we are obviously fighting our own fears. Not metaphorically, but literally. Our fears are in the texts on which our AIs are trained.
Jan Broersen retweeted
Sikorski: Putin is doing what Brezhnev did, but at full speed. He spends too much on arms and attacks his neighbors.
Sooner or later, that will lead to the collapse of the Russian economy. Then we'll have what always followed Russia's failures: reforms. 6X
This Anthropoc IPO will be successful because for the first time all the retail investors have an opportunity to invest in AI. The FOMO effect. But the business model for AI is full of uncertainties. AI is a very impressive technology, but it is not that complex. Everyone can build AI now. So AI will likely be like a commodity that is rather cheap. I suspect it will be difficult for AI companies to make money, because all AIs will be roughly the same.
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Jan Broersen retweeted
Human-centered Artificial Intelligence & Utrecht Study Association for Cognitive Artificial Intelligence (#USCKI) Incognito organize a screening of the movie "Klara and the Sun", followed by a debate.
with @AnoukvK @broudsov #MehdiDastani @UUBeta
uu.nl/en/events/film-screeni…
How is it even possible that Democrats consider Chuck Schumer again for Senate majority leader? Come on.
So this is the plan. Will not happen. Ukraine will not agree to it.
19/ TRUMP: I think we're going to have it done and I think it's going to happen and they're going to end up with a, uh, little bit different shape, Ukraine. Look, this is a war that should have never happened. If I were president, this war would have never happened.
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Make Russia stop.
Russia has destroyed the Kolibri rehabilitation centre for children with disabilities in Ukraine’s Poltava region.
A direct hit and a huge fire burned out the classrooms, the therapy rooms and the rehabilitation equipment that was unique for the region.
What kind of sick country wages war on children who are already fighting battles of their own?😭
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Jan Broersen retweeted
USA, this is your president.
It must be deeply embarrassing to have a president who behaves like this and represents your country on the world stage.
Just watched a few videos of James Talerico meeting with Texans on the streets. I now understand better why Elon's money could not sway that election. The people he talks to and that voted for him all seem to be "kind" people. They recognize the same in him.
Job Cohen spreekt voor ieder van ons die hier mee worstelt maar uiteindelijk inziet dat wat de Israelische regering in Gaza doet en op de Westbank laat gebeuren absoluut ontoelaatbaar is.
Job Cohen bij de Rode Lijn
Amsterdam, 8 november 2026. Tijdens de Rode Lijn-demonstratie in Amsterdam sprak Whispering Media met Job Cohen, voormalig burgemeester van Amsterdam en oud-leider van de PvdA.
Een kort interview tijdens de demonstratie, waar duizenden mensen samenkomen om aandacht te vragen voor de situatie in Gaza en het Nederlandse beleid ten aanzien van Israël.
Whispering Media | Op straat
Forcing those who refuse to fight happens on both sides, of course. But there is a difference between being forced to fight for an authoritarian system that started a war and being forced to fight for a democratic government that defends against the aggressor and represents its people. I wonder what @ewaldeng and @martijntjesmits think about this.
Outrage in Moscow as Putin's desperate hunt for cannon fodder hits a new low, randomly arresting and beating over 200 youths, pulling the 16-30 year olds into the system, applying pressure to sign military contracts.
The Kitay-Gorod neighborhood is a popular hangout for Moscow's younger crowd. Authorities are claiming its an effirt yo "restraining non-conformist youth".
Relatives are swarming the holding facility.
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My first thought is that tightening the loop is not a qualitative change; it is only a quantitative one.
This is f*cking insane. Former OpenAI CTO, Mira Murati:
"The models we work with today are turn-based. You talk, they talk, then they go off and think, and while they're thinking they're deaf and blind.
The next ones never stop listening. They take in audio, text and video all the time and answer in 20-millisecond chunks."
In just 2 minutes, she shows why the chatbot you type into is about to look like a fax machine.
Prompt Box → Chatbot → Agents → AI That Works Next To You In Real Time
A turn-based model waits for you to finish typing, then goes quiet while it thinks.
An interaction model sees and hears what you're doing, and can cut in the moment you start going the wrong way.
Anyone can type a prompt. Almost nobody is ready to work with an AI that never stops paying attention
Watch the full 2 minutes. This is worth your time.
Bookmark it, like it, save it, I don't care... this is the best thing you'll see on X today.
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The problem with invoking the 25th Amendment is that Vance might be worse. Tough choice for the new congress.
So here's what happened in today's Stupid Olympics.
There are two people named Dana White.
One is President and CEO of the UFC
The other is Dana W. White, who served as the Assistant to the Secretary of Defense for Public Affairs and Chief Pentagon Spokesperson for the U.S. Department of Defense under Secretary James Mattis
Their pictures are below. He's the white guy. She's the Black woman. I'll call them UFC Dana and DOD Dana to make it easier for you.
Suzie Wiles, shortly before being replaced by Count Stephen Miller, advised Trump that his new Press Secretary should be Dana White.
And Trump in all his finite wisdom, immediately assumed the UFC Dana, who has never done anything to prepare him for press secretary, and not DOD Dana, whose entire career has been in preparation for that.
Now you might be saying, "Kelly, not everyone knows about DOD Dana. It's an honest mistake."
But he's NOT just "everyone." He's the President of the United States. And this is a man whose administration has been firing Black people, women, trans people, and so on, insisting that none of them got their job based on merit.
And then he's going to name someone completely unqualified to be Press Secretary because the President is a fan of the UFC.
And he didn't even think to ask anyone. It never even occurred to him to ponder whether UFC Dana is the person he should pick as Press Secretary.
Stupid and incurious are a dangerous combination, and this man is both of those things.
And that got me to thinking about the two Dan Sullivan in Alaska. And I get it now. The man who is too stupid to know the difference between two Dana Whites thinks Alaskans are too stupid to know the difference between two Dan Sullivans.
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Ik moest net echt even checken op de site van Buitenhof of die gast die daar achter Paul Rosenmöller klaarzit om later aan het woord te komen niet Hunter Biden is.. Het blijkt luitenant-admiraal b.d Rob Bauer te zijn.
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My final words on the "it is *easier* to cool things down in space" controversy.
(1) I never said it is impossible to cool things down in space; I just pointed to the fact that two of the three means (conduction, convection) are not available. There is only radiation. On earth there is all three at the same time.
(2) There are some details about radiation being more effective in space (space does not radiate back), but that does not fully compensate for the lack of conduction and convection. So physics indeed suggests it is easier to cool on Earth. I stand behind that, but I am happy to be corrected.
(3) But there are, of course, other ways in which it is actually *easier* in space to cool things down. Somebody pointed out that radiators can be passive, so it is much simpler technology than circulating coolants, etc. Easier indeed. Others pointed out it is easier to scale in space. Easier indeed. And I already suggested Elon needs no permits to scale in space. These forms of "easier" are, I think, what Elon has in mind. And I apologized to him for thinking he might have been disingenuous towards investors by making them think "easier" applied to space being cold.
(4) Many disputes revolve around misinterpretations of each other's words.
After reading this tweet, I feel I should apologize to Elon/@elonmusk. I assumed he tried to deceive investors by suggesting it is easier to cool in space because, according to general wisdom, space is cold. But his reason to claim it seems to be that the cooling system must/can be passive, which is a "simpler" technology than what we would have on earth. And indeed, the area of the solar panels would even need to be 2 to 5 times bigger. I still think it is unlikely I will see data centers in space in my lifetime, but that is another matter.
(By the way, my tweet was prompted by this video: youtube.com/watch?v=S1umCJfb… It contains much more information about how many launches would be required to build a data center in space.)
He has. Multiple times on X, podcasts and interviews…
The core physics he stresses is radiative cooling into the ~3 K cosmic background via the Stefan-Boltzmann law, aluminum radiators oriented away from the Sun, higher operating temperatures reducing radiator area, solar panels at ~250 W/m² needing ~5× the radiator area, and the fact that once mass-to-orbit is cheap (Starship), the system is simpler/passive compared with terrestrial liquid cooling + chillers.
November 3, 2026 – Primary numbers post
“Yeah, much easier to cool in space.
~1300 W/m² is easily achievable for an aluminum radiator pointed away from the Sun, as it is mostly just seeing cosmic background radiation at ~3 degrees above absolute zero!
Solar panels generate ~250 W/m², so you should expect them to have ~5 times the area of the radiator. Most of the mass of the satellite is solar panels.”
Link:
A direct reply to Shaun Maguire’s detailed technical post (aluminum structure + ammonia phase-change loop, passive circulation, (T^4) advantage). Full thread starts around Maguire’s post: xitter.twitterapi.xyz/shaunmmaguire/status/2….
November 3, 2026 – Follow-up reply on scaling
“Yup, T^4 scales super fast.”
Link: xitter.twitterapi.xyz/elonmusk/status/211746…
(Responding to discussion of how sharply radiation rises with temperature.)
October 24, 2025 – (T^4) and Kardashev scale
“Radiative cooling rising as (T^4) really favors higher operating temperatures.
Ultimately, solar-powered AI satellites are the only way to achieve a Kardashev-II civilization.”
Link: xitter.twitterapi.xyz/elonmusk/status/198153…
August 31, 2026 – Critique of critics
“When someone who claims they’re super smart says that orbital AI is impossible due to cooling or whatever, but doesn’t even know things as basic as heat rejection of the radiator per m², coolant temp or max operating temp of the GPU 🤦♂️”
Link: xitter.twitterapi.xyz/elonmusk/status/209457…
January 20, 2026 – Higher GPU temperature advantage
“Within a few iterations, we can probably get AI satellites to <100 kW/ton, inclusive of all components, especially if the GPU is designed to operate at ~370 Kelvin.”
Link: xitter.twitterapi.xyz/elonmusk/status/201367…
SpaceX AI1 / Starmind design references (publicly discussed around June 2026): ~110 m² deployable liquid radiators, ~1,400 W/m² (both sides, knife-edge to Sun), 120 kW sustained / 150 kW peak, solar ~250 W/m². Elon has referenced these numbers in the context of the posts above.
Podcasts & Interviews
•Dwarkesh Patel podcast (with John Collison), February 5, 2026
Elon discusses continuous solar (always sunny, ~5× effectiveness, no batteries), radiative cooling advantages, designing chips to run hotter to cut radiator mass, radiation resilience of neural nets, and overall orbital economics.
YouTube: youtube.com/watch?v=BYXbuik3…
•U.S.-Saudi Investment Forum / related appearances (around November 2025) – Explicit remarks that “the cooling is just radiative,” solar panels are cheaper without glass/framing, continuous solar. Often paired with Jensen Huang noting that terrestrial racks are mostly cooling mass.
•Other interviews / conferences (2025–2026) – Repeated points on radiative cooling being simpler once mass-to-orbit is cheap, higher operating temperatures helping via (T^4), and Starship as the enabler.
The attack with 9 heavy bombs using 4 bombers on 1 school in an *underground* shelter tells you exactly what Russia's strategy is. The message is: even as a civilian, you are safe nowhere. It is a maximally cynical terrorist strategy aimed at making the Ukrainian people choose against their own conviction, against their own country, against their own heart. We cannot even say this is what aggressors do. It is stronger than that: it is what *abusers* do.
❗️The GUR (Ukrainian Military Intelligence) already knows the names of the Russian killers involved in the airstrike on the school in Komsomolske.
At least 53 people were killed, and over fifty are still missing.
According to military intelligence, the strike on Komsomolske was planned by Colonel Fyodor Vladimirovich Zubakov, the head of the fire support group of the staff of the "Dnepr" grouping of the Russian army.
Four Su-34 aircraft were used to carry out the war crime.
The tactical aviation group No. 5, formed on the basis of the 11th and 559th aviation regiments, was involved in the bombing.
The crews are:
* Captain Yeliseyev, Serhiy Oleksandrovych;
* Captain Zverev, Dmytro Andriyovych;
* Senior Lieutenant Plotnikov, Rodion Serhiyovych;
* Senior Lieutenant Ignatiev, Mykyta Viktorovych;
* Senior Lieutenant Sokolenko, Maksym Viktorovych;
* Lieutenant Perekhrest, Vadym Olehovych.
The crew of another Russian aircraft is being identified.
They will be punished
Jan Broersen retweeted
Yes, the terminology was loose. Musk called the $100 refundable deposits "orders," which overstated the commitment. They were standard reservations, fully refundable with no obligation to buy. The 146k figure itself was accurate as a deposit count and reported as such by outlets at the time. Low conversion on cheap holds is normal; actual deliveries later reached only around 70k.