From Antiquity to Mars. 🏛️🚀 In search of truth, between philosophy and first principles. Explorer of tech and finance. Passionate about piano and opera. ✝️
Paris
Joined December 2025
- Tweets2K
- Following1.3K
- Followers159
- Likes3.2K
Sebastien retweeted
🇻🇦💥 𝗙𝗟𝗔𝗦𝗛 — « Il N’EXISTE PAS de guerre sainte. Seule la paix est sainte. […] La guerre ne peut JAMAIS être menée AU NOM DE DIEU », a déclaré Léon XIV lors du 40ᵉ anniversaire de la Rencontre internationale pour la paix à Assise.
Sebastien retweeted
500 Milhões de Europeus, esperam que 300 Milhões de Americanos os protejam contra 120 Milhões de Russos que nem conseguem derrotar 40 Milhões de Ucranianos enquanto, não percebem, que estão a ser invadidos por 2000 milhões de Muçulmanos que se dizem perseguidos por 9 milhões de Israelitas!
Sebastien retweeted
🗳️ *ÉLECTIONS EN ISRAËL : 44,9 % DE PARTICIPATION À 14H, UN RECORD DEPUIS AU MOINS 1969 !
Selon les chiffres communiqués, 44,9 % des électeurs ont voté à 14 heures, contre 38,9 % à la même heure lors des précédentes élections*.
Soit une hausse de 6 points de pourcentage.
Un tel taux de participation à cette heure n'aurait pas été enregistré en Israël depuis au moins 1969.
📊 QUELLES CONSÉQUENCES POUR LES PARTIS ?
Cette forte participation pourrait compliquer la situation des petits partis, qui devront réunir davantage de voix pour franchir le *seuil électoral de 3,25 %
Les partis de taille moyenne pourraient également voir leur poids relatif diminuer.
Sebastien retweeted
Do you think we’re living in a simulation?
This Stanford PhD raised over $300M, now valued at $2B, backed by Fei-Fei Li (@drfeifei), Andrej @karpathy, Greenoaks, & @IndexVentures, to build AI simulations of real people.
Their Stanford research achieved 85%+ accuracy predicting human behavior.
I sat down with Simile Co-Founder & CEO Joon Sung Park (@joon_s_pk) to get into it all.
Simile (@simile_ai) builds real-world simulations with access to 40M+ real people across its global panel partnerships for companies liek Deloitte, Wealthfront, CVS & more to test major decisions.
Joon completed his Stanford PhD advised by Michael Bernstein & Percy Liang, now his co-founders, & is the first author of the 'Generative Agents' paper. That paper introduced Smallville, a simulated town where 25 LLM-powered agents lived, worked, & socialized on their own.
Recorded at Index Ventures in San Francisco, we talked about Elon Musk’s simulation theory & whether human behavior can actually be predicted..
𝐓𝐈𝐌𝐄𝐒𝐓𝐀𝐌𝐏𝐒
(00:00) Joon Sung Park, Co-Founder & CEO at Simile
(00:44) Do we live in a simulation?
(04:01) The AI town that planned its own Valentine’s party
(06:46) Predicting human behavior with 85% accuracy
(11:09) Is human behavior predictable?
(13:40) What really drives human decisions?
(15:45) How Simile simulates customers & markets
(20:05) Why big companies want simulated customers
(21:31) Digital twins & a panel of 40M real people
(22:51) Who actually answers polls????
(24:22) How Simile keeps bad data out
(29:29) What Simile predicted about this episode
(33:34) The EV campaign that looked perfect until it wasn’t
(37:02) Simulating climate change, AGI & UBI
(39:06) What happens when you simulate your interviewer
(40:13) Raising $300M at a $2B valuation
(44:54) Simulation is in its GPT-4 era
(49:43) What the most successful people have in common
(53:58) The “now what?” moment that ends careers
(55:25) The $15B question
Sebastien retweeted
If, by the way, the same situation that just happened in Brazil had happened but with the parties switched -- if Bolsonaro had won last night's election and then a pro-Bolsonaro judge sent the Federal Police to seize Lula's passport and bar him from leaving the country -- every major western media outlet and liberal NGOs would be screaming about the authoritarian attack on Brazil's elections and the destruction of basic freedoms.
Sebastien retweeted
🔴Meurthe-et-Moselle : Pourquoi une chapelle de 158 ans est-elle sur le point d’être détruite alors qu’elle pourrait être sauvée ?
➡️La municipalité prévoit de démolir la chapelle Notre-Dame-de-Pitié, construite en 1868 et qui n'aurait jamais été désacralisée
➡️Urgences Patrimoine dénonce l'absence d'étude préalable de restauration et engage un recours en justice
Sebastien retweeted
🔴🇫🇷 𝗔𝗟𝗘𝗥𝗧𝗘 — CHAQUE SEMAINE, la France PERD UN ÉDIFICE RELIGIEUX, dont les deux tiers des destructions sont dus à des incendies criminels. (L’Observatoire du patrimoine religieux)
Sebastien retweeted
Pretty much.
As of the past few weeks, debt markets have almost entirely shut off access to money for any company that doesn’t have substantial revenue independent of AI data centers.
SpaceX closed $40B of debt for GPUs, but we’re investment grade and have Starlink & launch revenue.
That means the 200+ neoclouds are going to see guppy-level death and consolidation. Some will make it through, but not many.
Sebastien retweeted
Imagine Grok Bot handling all those painful phone calls for you. Calling customer service, waiting on hold for hours, explaining your problem over and over, dealing with cancellations, refunds, and all the annoying back-and-forth while you just go about your day
You're gonna sooo love Grok Bot
Grok @Bot can now call someone or a business for you, make a request on your behalf, take notes on the response and send you a note summarizing the conversation!
Sebastien retweeted
This is f*cking insane. SpaceXAI lead engineer (ex-Cursor):
"99% of people still use GrokBot like Google. I run 30+ Grok cloud agents with a Chief of Staff, a PM and 25+ workers, and they never clock out"
In just 20 minutes, this engineer shows how to turn one GrokBot into a team that works for you 24/7
GrokBot → Chief of Staff → PM → Workers → Autonomous Fleet
A Chief of Staff agent plans the day and hands out every task
A PM agent splits the work and checks everything the workers ship
Anyone can chat with one GrokBot, almost nobody builds the team that keeps working while they sleep
Worth more than most $1,000-2,000 agentic engineering courses
Watch it today, then read the article below on building a Second Brain with Grok Bot ↓
Sebastien retweeted
🇫🇷 A French politician poses for photos with MASKED RIOTERS just minutes before they TRASH a bank in Grenoble.
And the man in the pictures? He's in charge of the city's FINANCE commission.
Allan Brunon, an elected official from the far-left LFI party, smiles for the camera alongside black bloc-style protesters.
Just minutes later, some of those demonstrators allegedly ransacked a Crédit Agricole branch.
Seriously, a city finance official posing with masked protesters while banks are getting smashed up?
You couldn't write a more ridiculous set of circumstances.
Writer: Oliver
Sebastien retweeted
Avocat de Samuel Sandler qui a perdu son fils et ses petits enfants à l’école Ozar Hatorah le 19 mars 2012, j’ai un commentaire bref et lacunaire à faire: Monsieur le Président, comment peut-on dire une telle connerie?
« Ce qui s’est passé aujourd’hui c’est un tournant. C’est la première fois qu’il y a un acte terroriste planifié pour tuer nos compatriotes, nos enfants, a raison de leur couleur de peau ou de la religion qu’on leur donne » « Ne baissez pas la tête »
Emmanuel Macron à Trappes.
Readers added context they thought people might want to know
La déclaration citée d'Emmanuel Macron n'est pas exacte. Des attentats terroristes planifiés ont déjà tué des enfants en France en raison de leur religion, comme celui de Mohammed Merah en 2012 à l'école juive Ozar Hatorah de Toulouse.
lefigaro.fr/faits-divers/t…
lefigaro.fr/actualite-fran…
Sebastien retweeted
Huge loss for Anthropic. Senior, impactful people leaving before supposedly historical IPO... 🤔
I’ve left Anthropic after more than a year of working on Claude Code and seeing it scale larger than I ever imagined.
I have really loved working at Ant and believe deeply in the mission, and most of all, the idea of a race to the top.
The idea that if we work hard and responsibly, we can raise the bar and inspire others to great outcomes. And if we all push each other to be better, things can be radically good. I will carry the spirit of this with me forever.
My colleagues at Anthropic are the most talented, thoughtful, competent, and earnest people I have ever met. I am glad they are at the wheel and trust them deeply.
To the community on X, thank you for everything. You’ve made this the most fun (and sometimes stressful) job I’ve ever had.
For me, it is time for a bit of a break before diving into something new.
If you want more excellent Claude Code content, you should follow @addyosmani , @lydiahallie, @_catwu, @ClaudeDevs and of course @bcherny who started it all.
Sebastien retweeted
“If Christians don’t get involved in politics, politics will erase their right to be Christians.”
- Charlie Kirk
🙏
Sebastien retweeted
🔴Stupeur chez les chrétiens de France après les propos du président Macron
🔴 Les victimes passées du terrorisme religieux ne comptent-elles pas ?
➡️"Notre stupeur n’est pas politique. Elle est morale".
➡️En présentant le drame de l’attaque de Trappes comme une première, Emmanuel Macron suscite une profonde incompréhension chez tous les chrétiens de France et au-delà
📍Président Macron ( capture) - L’aube et l’étole tachées de sang du père Jacques Hamel exposés au public ( capture facebook)
Sebastien retweeted
What’s actually going on in Ukraine is that there is a massive incentive difference between the elites and the people.
The former have grown very rich off the hundreds of billions flowing to Ukraine, while the latter’s children are conscripted to die in trenches.
Sebastien retweeted
Oui, la robotique est notre avenir industriel. D'Archimède à Copernic, de Pascal aux frères Lumière, l’innovation et la technique ont toujours fait la grandeur de notre civilisation. Et la France y a toujours pris sa part.
Après avoir laissé notre puissance industrielle à la prédation de la Chine et à celle du monde entier, nous ne pouvons laisser notre avenir technologique aussi entre leurs mains.
Grâce aux robots, la France pourra se réindustrialiser tout en restant elle-même.
«Les robots pourraient permettre de relocaliser des industries en France» lopinion.fr/economie/les-rob…
