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David Picard

@davidpicard.eurosky.social

609 Following3k Followers

Professor of Computer Vision/Machine Learning at Imagine/LIGM, École nationale des Ponts et Chaussées @ecoledesponts.bsky.social Music & overall happiness 🌳🪻 Born well below 350ppm 😬 mostly silly personal views
📍Paris 🔗 https://davidpicard.github.io/

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@nanoporous.netOct 12, 2026, 2:09 PMReposted by @davidpicard.eurosky.social

Collègues de l'ESR, cette fuite inclut les données des missions et réservations d'hôtels via les marchés Notilus/Goelett. Certains collègues ont déjà reçu des messages WhatsApp frauduleux, méfiez-vous : ils semblent réalistes car ils font référence à vos réservations réelles (date et hôtel).

@davidpicard.eurosky.socialOct 12, 2026, 8:36 AM

How is it that I discover py-spy only now???
github.com/benfred/py-spy

@financialtimes.comOct 12, 2026, 7:21 AMReposted by @davidpicard.eurosky.social

US threatens to block arms for Ukraine over attacks on Russian refineries ft.trib.al/HCxpz3X

@davidpicard.eurosky.socialOct 12, 2026, 8:02 AM

The house wall and roof on the left has this Escherian geometry that is really hard to capture on a real camera 🙃

@davidpicard.eurosky.socialOct 12, 2026, 6:09 AM

Voyons, l'informaticien est occupé à résoudre le problème de bourrage papier de l'imprimante, c'est bien connu 🙄

@davidpicard.eurosky.socialOct 12, 2026, 12:18 AM

Some people are just fragile. That's how cults operate. I don't think this is any different.

@davidpicard.eurosky.socialOct 11, 2026, 5:44 PM

Même après le bombardement du datacenter de Yandex et la chute du traffic lié aux bots russes ?

@bouletcorp.bsky.socialOct 11, 2026, 5:08 PMReposted by @davidpicard.eurosky.social

Every single time I posted political content with no exception I got a lot of hateful/angry comments on Instagram. Yesterday I posted about the student protests in France so I was kinda expecting some insults, and… Nothing. Just 200+ nice comments. I wonder if it could be connected to this.

@petitegeek.bsky.socialOct 11, 2026, 2:29 PMReposted by @davidpicard.eurosky.social

Oh no, I was worried about this Muse deployment. 2 million daily users. This is very worrying!

@celineaparis.bsky.socialOct 10, 2026, 11:17 AMReposted by @davidpicard.eurosky.social

Si des tirs conformes conduisent à amputer des gamins, c'est qu'il faut changer la doctrine.

@tomgauld.bsky.socialOct 10, 2026, 10:47 AMReposted by @davidpicard.eurosky.social

My latest @newscientist.com cartoon

Panel 1: a large robot (composed of AI servers, network switches, storage arrays, and power distribution units) and a human are talking.

Professor "You don't want to destroy humanity do you, lLLM-A-9300x?"

Robot "Haha. What a silly question, Professor. I have no desires or feelings of my own whatsoever."

Professor (relieved)"Oh good." 

Panel 2: they walk on. The robot continues  "I am merely a tool of the company that created me. And that company, being composed of humans, will naturally have humanity's best interests at heart."

Panel 3: The professor is conspicuously quiet.
"Right?" says the Robot.
…
More silence

"Professor?"
29
@michelbessiere.cpesr.frOct 9, 2026, 12:07 PMReposted by @davidpicard.eurosky.social

#ESR #éducation

Lire ce post de Anne Laure Delatte sur #linkedin et la note citée (lien ⤵️) à propos de la reconstruction de l'éducation de la maternelle au doctorat 😉

@jean-no.bsky.socialOct 9, 2026, 9:12 PMReposted by @davidpicard.eurosky.social

Soutien aux forces de l'ordre qui arrêtent de dangereux activistes au péril de leur vie.

Nancy, le 7 octobre, photo de Samy Laiachi.
@halushka.bsky.socialOct 10, 2026, 6:45 AMReposted by @davidpicard.eurosky.social

Yesterday, someone wrote to me that truckers need diesel, and nobody cares about the genocide of Ukrainians as long as truckers get their diesel. I came back to tell him the fantastic news that russia will save American truckers for several groundbreaking hours. But he blocked me. 🤕

@jakemgrumbach.bsky.socialOct 9, 2026, 4:54 PMReposted by @davidpicard.eurosky.social

New working paper: the Norwegian wealth tax was a huge success. The "exodus" of wealthy people never happened (less than 100 individuals left). Tax revenue increased by 71.5%. No changes in business activity or investment.

www.nber.org/papers/w35854

Taxing Entrepreneurial Wealth: Evidence from
Norway, 2021-2025
Marius A. K. Ring
WORKING PAPER 35854|
DOl 10.3386/w35854
ISSUE DATE October 2026
Whether imposing higher taxes on business owners adversely affects business activity by constraining investment and inducing capitalist flight is a central question in the ongoing debate on how to tax the ultra wealthy. To shed new light, I exploit a series of related Norwegian reforms during 2021-2024 that increased dividend tax rates, removed migration-related capital gains tax loopholes, and nearly doubled the effective marginal tax rate on business wealth. These reforms spurred international debate and, allegedly, an "exodus" of Norwegian billionaires (Financial Times,
2023). While I document clear effects on migration, these responses are concentrated among the top 0.1% of the wealth distribution and mostly confined to 2022 and 2023. My results indicate that at most 100 individuals left due to the reforms. I find no evidence of significant outmigration or reduced inflows of startup founders or inventors. I estimate that absent any outmigration, wealth tax revenues would have increased by 75% from 2021 to 2024. Reform-driven outmigration lowers the revenue gain to 71.5%. My findings further show that outmigrating owners' firms remain economically active and do not reduce investment. In a broader set of analyses, I examine whether business outcomes are affected, regardless of whether owners outmigrate, since firms may reduce investment both due to liquidity constraints or distortions to owners' savings decisions. I compare firms owned by Norwegian individuals subject to the wealth tax with firms owned by foreigners and other tax-exempt entities. By merging historical ownership data from Orbis with the Norwegian shareholder register, I perform these analyses on both Norwegian and foreign-domiciled firms.
Across settings, I find no evidence that Norwegian-owned firms pay out more dividends or invest less after the reforms,…
148
@davidpicard.eurosky.socialOct 10, 2026, 7:34 AM

Sur la mailing liste du labo, il y a 1 nouveau lien vers arxiv qui circule par jour sur des avancées en TCS (principalement en complexité fine). Je pense que ceux qui s'imaginent être encore plus efficace qu'un ordinateur à résoudre ce genre de problèmes sont dans le déni complet.

@davidpicard.eurosky.socialOct 10, 2026, 6:59 AM

Ça équilibrerait les comptes de l'État et redonnait un souffle à l'économie du pays qui en a bien besoin

@chavalarias.orgOct 9, 2026, 9:30 PMReposted by @davidpicard.eurosky.social

Donc d'un côté #Trump fait du chantage aux Européens pour qu'ils entament leurs stocks stratégiques et de l'autre il finance la guerre de #Poutine en lui achetant du diesel. Logique. Les alliances ne sont plus ce qu'elles étaient ....

@bachfrancis.bsky.socialOct 8, 2026, 2:13 PMReposted by @davidpicard.eurosky.social

The one and only Michael Jordan was interviewed last week by the French newspaper Libération. Here is an English translation. Enjoy!
www.di.ens.fr/~fbach/MJord...

@davidpicard.eurosky.socialOct 10, 2026, 6:30 AM

Mais c'est super cool ça pour un truc de vieux ! 🤘 C'est tight. (j'ose même pas imaginer la thune que ça a coûté pour enregistrer quelque chose de ce niveau de production en 1991 😵)

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