Technically a philosopher, still has a PhD to finish. I write about stuff. Directeur de la recherche à @Hexagone_org. "At least he's pretty smart." (@bechhof)

Joined April 2017
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10 Apr 2019
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Philippe Lemoine retweeted
The world has warmed by around 1.4C since 1850. It took 148 years for the first half of that warming to occur, and just 27 years for the second half!
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Some people seem to think that not only that the AI investment boom is a bubble, but also that AI is fake and will somehow disappear after the bubble has burst. In that connection, it's interesting that Gutenberg went bankrupt, but obviously the printing press didn't disappear.
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when mount tambora in indonesia erupted in 1815, the volcano killed all 10,000 tambora people and wiped out their culture entirely. their extinct language was uniquely non-austronesian & we only know about it from a 48-word vocabulary list collected by colonial officials in 1814
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Every so often, @aaronstein1 and I talk about whether we need to write this op-ed again -- or just tap the sign. Nuclear deterrence is today functioning precisely as intended, with both parties edging out onto the slope, carefully and uncertainly. warontherocks.com/who-is-det…
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Philippe Lemoine retweeted
What a great story. There is so much latent demand out there for very specific products/services. This demand hasn’t been met because the market is usually relatively small and the overhead cost of providing it through traditional firms is too high to meet it. AI changes this, @aidenjohnsonn_ is a perfect example of how: small team providing useful products to a market that would have otherwise been underserved. My prediction is that we’ll see a ton of this going forward. Markets/people who were underserved/ignored because overhead costs were too high will have their demand met. Small teams/firms, but also teams within larger organizations targeting unmet demand with bespoke products. This is what a welfare improvement looks like.
AN ACTUAL GOOD THING TO COME FROM AI In today’s newsletter, I wrote about our new chat with @aidenjohnsonn_ and how stories like his are far more white-pilling than the typical “one day this might cure cancer” form of AI boosterism.
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Philippe Lemoine retweeted
Interesting economic analysis of why airlines are always going bankrupt.
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Don't you guys worry, I got this✋
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Play stupid games, win stupid prizes.
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
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Philippe Lemoine retweeted
Je suis mort de rire, ca c'est de la justification qui justifie
Jun 12
🇫🇷👨‍🏫 FLASH | L’université Paris Cité a retiré son doctorat au physicien Étienne Klein après avoir constaté des PLAGIATS dans sa thèse soutenue en 1999. Des copier-coller auraient été relevés dans près des deux tiers du document. L’université lui interdit également toute réinscription en doctorat. (AFP)
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Philippe Lemoine retweeted
Pakistan expects the U.S.-Iran deal to be completed in the next 24 hours and immediately signed electronically.
We are closer to a peace deal than ever before. With finalisation likely expected in the next 24 hours, Pakistan is preparing for the electronic signing of the peace deal immediately after, followed by technical level talks next week. We would like to thank United States of America and Islamic Republic of Iran for their ongoing commitment during the negotiations, and we extend our sincere appreciation to our brothers in the region for their support. We are confident that this historic peace deal will form a strong foundation for lasting peace. @realDonaldTrump @JDVance @SecRubio @SteveWitkoff @SEPeaceMissions @drpezeshkian @araghchi
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Philippe Lemoine retweeted
STS operations outside Hormuz to transfer oil from tankers transiting the Strait to others for onward shipment to Asia is now becoming the 'new normal'. volumes are a fraction of normal levels but indicate adaptation and willingness of some shipowners to take the risk. they're paying crew 3 times the normal rate to go through. what some owners perceive as a reckless disregard for the life of seafarers, others see as a business opportunity.
The Strait of Hormuz remains open for transit.
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Philippe Lemoine retweeted
Part of a broader trend in MENA: women's literacy, internet use, & "relationship media" (for lack of a better description) are decreasing fertility.
Let me repost a post from last year, when I had fewer followers. Morocco’s TFR in 2024 was 1.97. In 2025 it was 1.90. A question for many readers who left comments: how is Morocco going to handle this in 2050? Not 2250, not 2150, but in one geneation.
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Philippe Lemoine retweeted
Some Piketty (et al.) bangers to explain why he is so respected, even before Das Capital 2.0, and whatever AI-generated stuff he publishes in the newspaper today In the 1990s, he formalised theories of self-fulfilling preferences and redistribution. He showed us (1/4)
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Philippe Lemoine retweeted
They just led an elephant through the @TexasGOP convention and it took a giant pee right near the press area.
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What happened to the Rockefeller, Carnegie and Astor by the way? According to the “law of capitalism” (r>g) their wealth should have grown ineluctably faster than GDP unless there is a wealth tax. By now, assuming a 4% spread between r and g, these families fortunes should represent roughly 200% of GDP. Is that actually true? Or maybe somehow the wealth of these families got ultimately diluted in other ways? Maybe we should wonder in what ways
Replying to @gabriel_zucman
At the peak of the Gilded Age, the 4 largest fortunes were Rockefeller, Carnegie, Astor ( Baker/Frick/Field depending on the year). If they had spent their wealth, they could have bought 4% of all the goods and services produced in a given year in the US at that time.
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Philippe Lemoine retweeted
UAE unfrozen billions of dollars in Iranian assets, according to Reuters
Pakistan FM is expected to arrive in Geneva, which will host a signing deal between Iran and the US
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