Levi Henze (@HenzeTimon) header
Levi Henze (@HenzeTimon) profile picture

Climate Economist with a passion for many other things. Swimmer and classical music nerd (apparently).

Berlin, de
Joined November 2012
Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)Photo by Levi Henze (@HenzeTimon)
Levi Henze retweeted
So-called libertarian economists going full-on totalitarian. Not entirely unexpected but still horrible to see.
Human disempowerment now. It's time for the age of the folly and cruelty of human politics to end. The median AI is so far above the median human voter in both knowledge and decency it's embarrassing. Humanity should just take the L.
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This
Replying to @JHWeissmann
"It’s not the job of economists to dictate how our economies should be run but to find solutions to implement democratically determined goals." I'm always curious as to who is arguing the opposite?
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Replying to @edenhofer_jacob
A great paper indeed! My coauthors and I have related work which you might find interesting pubsonline.informs.org/doi/1…
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I strongly feel like reading some Walter Benjamin today
Spotify just announced a feature that could either save the music industry or destroy it. Starting as early as Q1 2027, Spotify Premium subscribers will be able to use AI to transform any participating artist’s song into a completely different version. Turn a folk ballad into a dance track. Make a hip-hop song sound acoustic. Generate a cover where one artist’s voice performs another artist’s song. Remix a pop hit into lo-fi study music. Create the version of your favorite song that only existed in your head until now. The remixes will be uploaded directly to Spotify. They’ll appear in playlists. They’ll count toward the original song’s chart position. And most importantly the original artist will earn royalties every time someone listens to a fan-created remix of their work. Spotify has already signed a landmark licensing deal with Universal Music Group the world’s largest record label. Negotiations with Sony Music and Warner Music are ongoing. The feature will cost an additional $4–$5/month on top of Spotify Premium. And analysts project 7–8% of American subscribers will adopt it by 2028. This is not Suno or Udio generating music from text prompts. This is fans remixing real songs by real artists with the artists’ permission, on the world’s largest streaming platform, with royalties flowing back to the creators. A music industry analyst who’s covered streaming economics for 15 years told her team something after reading the licensing agreement that reframed how she understood the future of recorded music. “Spotify just turned 640 million listeners into 640 million potential remixers. The question isn’t whether people will use it they will. The question is whether paying artists for fan remixes solves the economics of streaming or creates a world where the original recording is worth less than the infinite remixes generated from it.” Here’s what Spotify’s AI remix feature actually is, who wins, who loses, and why this might be the most consequential decision in the music industry since the launch of streaming itself 🧵
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This was what I originally wrote on the subject, I think the thesis still holds as far AI disruption in the hiring process via the degradation of traditional labor market signals:
I've been thinking about artificial intelligence and the job market a lot recently, so I wrote a piece on what I see as the most immediate economic threat posed by generative AI (and it's not automation).
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Very useful paper for thinking about the support for price controls.
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Why fuel cell? Because they produce pure streams of CO2 from natural gas, on which we can do CCS today. 👍
Google announcing another FOAK CCS project this time it’s fuel cell capture to storage in Wyoming Unbelievably cool project. Clean, firm, on demand power. Nearly 1GW of CCS capacity under contract for Google. blog.google/innovation-and-a…
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Levi Henze retweeted
🌊💙 WE WERE ALWAYS BLUE
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Levi Henze retweeted
Die Debatte, ob dieser oder jener amerikanische Senator in Deutschland ein Politiker von dieser oder jener Partei wäre, ist so peak deutsch. Die Wahrheit ist doch: wer 50-60% der Wähler überzeugen will, muss man von allem ein bisschen sein.
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Levi Henze retweeted
Affordability ist eine gute Oppositionsstrategie, aber keine gute Regierungsstrategie. mark my words
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To be clear, 2026 was incredibly stupid and deranged But both bouts created by the US government
Left: inflation. Right: inflation.
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Levi Henze retweeted
We wrote a blueprint for progressive foreign policy in 2029, in case that's something that might be relevant today. Edited by @mattduss with a foreword by @BernieSanders. Mine is the climate chapter.
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Going places
One of the things the data analysts on our side obsessed over was "composition"—whether the electorate looked close enough to 2024 for Republicans to win. And despite polls that showed a Democrat blowout, the data kept on telling us the same story: in some states turnout was merely OK, in other states it was downright amazing, and in no state was it catastrophic. There was a genuine sense of optimism on our team: our people were showing up. So, I asked the smartest data guy I know, does that mean we're going to shock the world? "No," he told me. "We might do better than the polls suggest. But the data is telling us that a lot of Trump/Vance 2024 voters are pissed and planning to vote for the other guys. Our voters are turning out, but they may not vote for us." Well, that looks prophetic now. Our voters did show up. In Florida, for example, the electorate was 9 points more Republican than Democrat, just a couple points worse than 2024. Undoubtedly there were places we could have done better on turnout. But the main problem is not turnout. The main problem is that many people who voted for Trump/Vance in 2024 voted for Democrats in 2026. There will be a lot of infighting and arguing over what happened and why that is. One of the pollsters I really respect told me that our economic messaging wasn’t sharp enough down the stretch. I’m sure that’s true. But the real reason we lost is obvious to almost everyone. Another pollster—one of the smartest people I know in politics, told me yesterday we’d lose the generic ballot by 13 points. I felt negative going into Tuesday, but even I was shocked by this. In his polling, he saw that a lot of Trump 2024 voters were angry and planning to vote for Democrats. He asked those voters who had abandoned us what would cause them to come back on our team. The top four answers, accounting for nearly all of the responses were: 1) End the war 2) Focus on cost of living/inflation 3) Put America First 4) Change our relationship to Israel Our voters showed up. And the above four reasons are why many of them voted for Democrats. This is according to a pollster who nailed the results. While many spent Monday attacking Rachel Campos Duffy for calling for a diplomatic resolution to the conflict, it turns out her political advice was sound. (She’s also a great person.) In the next few months, there's going to be a lot of gaslighting. Expect to hear any number of establishment politicians say the solution to our woes is amnesty. I'm open to the idea that we should change enforcement—by focusing more on businesses that hire illegal labor, for instance. But anyone pushing amnesty is lying to you. The reason we lost is the war. The president himself said so last night. If you'd like to argue it was worth it, that losing the Senate for the next 6 years was worth it, then do so. Argue it was a worthwhile cost to pay. Agree or disagree, that's at least honest. But everyone knows why we lost. And any honest conversation about where we go from here must start there. I remain hopeful about our country. To the people who are pissed off and want to say, “I told you so”: you’re right, you did tell us so. Take that energy into electing Republicans who share your worldview. To the people who are just pissed at the results, you should be. Let’s take that anger and get back to the work of saving our country.
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Generally, nothing causes more discontent than cost of living shocks, especially from high levels amidst high inequality. The incumbent always gets wrecked. It’s hard to infer much else, especially when there are only two parties. If petrol prices are all it takes to end ‘fascism’, you might still have a fascism problem.
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This is spot on: His DICE exercise was always a descriptive baseline. You know that if you ever cared to listen/read. And his influence on actual politics, even the IPCC model family, is often exaggerated, in service of blaming him for slow progress. Scapegoating in droves
With William Nordhaus' recent passing the field of climate economics has lost one of its giants. Nordhaus published in 1977 what was at the time a rather bold projection: the the world would warm by 1.2C by the year 2026. In reality it warmed by 1.1C.
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tech bros after this week
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Levi Henze retweeted
Looking forward to the decades that Abdul will be a force in American politics.
EL-SAYED: And to all the parents who struggled to explain to their kids why the president openly mocks someone for their name or how they pray, let them know tomorrow that the bad guys lost.
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Aber interessant: Bärbel Bas sagt in dem Interview mit Feldenkirchen, dass sie persönlich (jetzt, wo sie frei sprechen kann, wie F. es ausdrückt) hinter dem Rentenpaket der Regierung steht u. grundsätzlich auch die Abschaffung der abschlagsfreien Rente nach 45 Jahren befürwortet.
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Levi Henze retweeted
Entering this era of LLMs
We asked GPT-6 Astra to edit Qwen3.5-0.8B weights to improve math. It directly changed only 0.016% of weights, fixing 0.8B's reasoning loops & improving math up to 6x and even instruction following 3x, without gradients or training. We call this Weight-Space Programming: frontier LLMs can now natively read/write neural network weights! 🧵 Blog: rikiyat.github.io/blog/weigh…
Readers added context they thought people might want to know
LLM was given weights explicitly as text in prompt and used code/forward passes (per authors' logs) to ablate Qwen looping direction, a known thinking-mode issue per model card. Primarily fixed repetition in that mode, not general 'natively' improving weights/math. rikiyat.github.io/blog/weight-sp… github.com/RikiyaT/lm_und… huggingface.co/Qwen/Qwen3.5-0… huggingface.co/RikiyaT/Qwen3.…
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Don’t we all, Lando. Don’t we all
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