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Arthur Charpentier

@freakonometrics.bsky.social
1.8K followers 1.5K following 828 posts

Dad of 3 & born-again mathematician. Statistician, economist, fellow actuary & data addict. Professor & researcher in Montréal 🇨🇦. Previously in Kyoto 京都 🇯🇵, Paris 🇫🇷, Hong Kong 🇭🇰, Leuven 🇧🇪 & Rennes 🇫🇷. Full of 'satiable curtiosity.

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Arthur Charpentier @freakonometrics.bsky.social · 11/10/2026
Montréal, Fall 2026
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Arthur Charpentier @freakonometrics.bsky.social · 11/10/2026
Montréal, Fall 2026
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Arthur Charpentier @freakonometrics.bsky.social · 11/10/2026
"Qu’un théorème soit vrai, même démontré et vérifié par ordinateur, ne m’intéresse guère si je ne peux pas le comprendre moi-même. Un théorème n’est pas un trophée. Il vaut par le chemin qui y conduit, par les idées qu’il relie et par le paysage qu’il découvre" www.lemonde.fr/sciences/art...
lemonde.fr
Les géants de l’IA ne s’intéressent aux résultats mathématiques que pour afficher leur puissance
CARTE BLANCHE. Les maths ne se réduisent pas à une liste de sommets à conquérir, mais sont d’abord un art de comprendre, rappelle dans sa Carte blanche au « Monde », Etienne Ghys, regrettant que la di...
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Tom Gauld @tomgauld.bsky.social · 10/10/2026
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?"
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Arthur Charpentier @freakonometrics.bsky.social · 05/10/2026
webcomicname.com/
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Théo Delemazure @delemazuretheo.bsky.social · 30/09/2026
[1] Le député le plus "assidu" de l'Assemblée en 2026 n'est allé voter en personne que 2 fois dans l'année. Les 2632 autres fois, c'était par délégation. Cet été, j'ai enquêté sur les délégations de vote à l'Assemblée. Résumé dans ce thread 🔽
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Arthur Charpentier @freakonometrics.bsky.social · 05/10/2026
"France’s education system is stretched to its limits, as student anger kicks off a hot fall protest season." www.thenation.com/article/world/france-student-protests-schools-education-macron/
thenation.com
Why French Students Are Revolting
France’s education system is stretched to its limits, as student anger kicks off a hot fall protest season.
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Arthur Charpentier @freakonometrics.bsky.social · 04/10/2026
"poubelles brûlées partout, revendications des lycéens nulle part" www.acrimed.org/Au-JT-de-Fra... 🔥
acrimed.org
Au JT de France 2 : poubelles brûlées partout, revendications des lycéens nulle part
Hiérarchie de l'information selon France 2.
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Jérémie Younes @jeremieyounes.bsky.social · 03/10/2026
194 vues pour cette vidéo alors que La Dépêche fait du journalisme, du coup je partage : www.youtube.com/watch?v=hkZZ...
youtube.com
Un prof dénonce le comportement de la police
YouTube video by La Dépêche du Midi
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SANAGA @sanaga.bsky.social · 01/10/2026
Le dessin du jour pour @vert.eco
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Arthur Charpentier @freakonometrics.bsky.social · 01/10/2026
"ArXiv submission rates have steadily increased since our founding in 1991. In September, arXiv received 40,363 submissions in a single month – a new record." blog.arxiv.org/2026/10/01/u...
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Arthur Charpentier @freakonometrics.bsky.social · 30/09/2026
Reading about concerns over academics being used to spy on AI research www.reuters.com/world/uk/uk-... Which would be slightly ironic in our case... Our papers are on arXiv. Our code is on GitHub. Our slides are online. Espionage seems like an unnecessarily complicated way to access our research.
reuters.com
UK accuses China of using academics to spy on AI and other tech research
Britain's MI5 spy agency issued an unprecedented alert on Wednesday to ​warn that a Chinese organisation was involved in funding academic research into topics such as AI on behalf ‌of Beijing's state ...
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Arthur Charpentier @freakonometrics.bsky.social · 30/09/2026
"How mass education and elite education synergistically reproduce and enhance inequalities; why education is not an effective vehicle for “social justice.”" musaalgharbi.substack.com/p/on-education
musaalgharbi.substack.com
On Education
How mass education and elite education synergistically reproduce and enhance inequalities; why education is not an effective vehicle for “social justice.”
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Arthur Charpentier @freakonometrics.bsky.social · 25/09/2026
(existe aussi en français : sondage.uqam.ca/874229?lang=fr)
sondage.uqam.ca
Opinions professionnelles et environnement organisationnel
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Arthur Charpentier @freakonometrics.bsky.social · 29/09/2026
«La Belgique n’a pas de problème budgétaire, elle a un problème fiscal» www.levif.be/opinions/chr... "les gouvernements ont été particulièrement inventifs pour creuser le déficit budgétaire et transformer la Belgique en enfer fiscal pour les faibles revenus, mais en paradis pour les plus hauts"
levif.be
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Arthur Charpentier @freakonometrics.bsky.social · 29/09/2026
"What Americans Get Wrong about Canada" thewalrus.ca/what-americans-get-wrong-about-canada/
thewalrus.ca
What Americans Get Wrong about Canada | The Walrus
Our closest neighbour has never really understood us
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Arthur Charpentier @freakonometrics.bsky.social · 28/09/2026
Québec, Fall 2026
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Arthur Charpentier @freakonometrics.bsky.social · 28/09/2026
Québec, Fall 2026
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La Vie des idées @laviedesidees.bsky.social · 19/09/2026
Avant de déterminer le « juste prix » d’un risque, une assurance doit déterminer le collectif au sein duquel les pertes seront partagées. Retour sur l’histoire de cette construction... par Arthur Charpentier @freakonometrics.bsky.social laviedesidees.fr/Qui-doit-par...
laviedesidees.fr
Qui doit partager le risque avec qui ?
Avant de déterminer le « juste prix » d'un risque, une assurance doit déterminer le collectif au sein duquel les pertes seront partagées. Ce texte revient sur l'histoire de cette construction, des…
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Arthur Charpentier @freakonometrics.bsky.social · 27/09/2026
"Europe faces incredibly harsh winters and unrelenting droughts if the vital AMOC ocean current fails – but when disaster will strike and how bad it will be remains uncertain. Now there is an ambitious plan to give us a warning" www.newscientist.com/article/2588...
newscientist.com
The collapse of the AMOC would be catastrophic. How will we know when it's coming? | New Scientist
Europe faces incredibly harsh winters and unrelenting droughts if the vital AMOC ocean current fails – but when disaster will strike and how bad it will be remains uncertain. Now there is an ambitious...
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Arthur Charpentier @freakonometrics.bsky.social · 25/09/2026
(existe aussi en français : sondage.uqam.ca/874229?lang=fr)
sondage.uqam.ca
Opinions professionnelles et environnement organisationnel
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Arthur Charpentier @freakonometrics.bsky.social · 25/09/2026
Insurance and actuarial professionals: I would be very grateful for your input. You will be presented with around a dozen statements related to actuarial practice and insurance, and simply asked for your views. The survey takes about 20 minutes. sondage.uqam.ca/798345?lang=en
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Tom Gauld @tomgauld.bsky.social · 24/09/2026
My latest @newscientist.com cartoon. many more here: www.newscientist.com/author/tom-gauld/
Image: A graph with lots of red dots clustered together in a curve. The are all looking upwards at a single red dot wearing sunglasses. 

Caption: Mike was an outlier and would probably be excluded from the study, but all the other data points secretly thought he was really cool.
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Arthur Charpentier @freakonometrics.bsky.social · 21/09/2026
"Not only assholes drive Mercedes. Besides disagreeable men, also conscientious people drive high-status cars" onlinelibrary.wiley.com/doi/abs/10.1002/ijop.12642
onlinelibrary.wiley.com
Not only assholes drive Mercedes. Besides disagreeable men, also conscientious people drive high‐status cars
In a representative sample of Finnish car owners (N = 1892) we connected the Five-Factor Model personality dimensions to driving a high-status car. Regardless of whether income was included in the lo...
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Arthur Charpentier @freakonometrics.bsky.social · 20/09/2026
fascinant... et très français comme discussion. En France, l’accélération scolaire est spontanément pensée sous la forme du changement de classe entière, alors qu'ailleurs j'ai l'impression que c'est davantage ciblé (subject acceleration, ou individualisation du cursus)
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Arthur Charpentier @freakonometrics.bsky.social · 18/09/2026
Seminars are back !
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Arthur Charpentier @freakonometrics.bsky.social · 18/09/2026
Edward Steed, www.newyorker.com/gallery/cart... #reality
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Arthur Charpentier @freakonometrics.bsky.social · 17/09/2026
welcome ! 🇨🇦
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Arthur Charpentier @freakonometrics.bsky.social · 17/09/2026
"Political segregation in the US workplace" www.nature.com/articles/s41562-026-02501-9.pdf (or papers.ssrn.com/sol3/papers....) "Republican Share of Coworkers (Two−Party)"
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Arthur Charpentier @freakonometrics.bsky.social · 04/08/2026
"La société au prix du risque: Assurance, algorithmes et climat à l’âge de la prédiction" freakonometrics.github.io/risk-priced-... en open review et entièrement disponible jusqu'à la fin de l'année (aussi disponsible en pdf)
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Arthur Charpentier @freakonometrics.bsky.social · 16/09/2026
"Replaceable but Employed: Automation and the Meaning of Work" nber.org/papers/w35559 "This "meaning externality" can create demand for the machine and make profitable development socially harmful"
nber.org
Replaceable but Employed: Automation and the Meaning of Work
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, an...
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Arthur Charpentier @freakonometrics.bsky.social · 16/09/2026
"Why Is Everyone In Tech So Sad?" noemamag.com/why-is-everyone-in-tech-so-sad/ "A lot of people seem to be realizing that knowledge work is mostly pointless. AI might give us the pleasure of finding out what happens if an entire class of workers loses faith in their careers"
noemamag.com
Why Is Everyone In Tech So Sad? | NOEMA
A lot of people seem to be realizing that knowledge work is mostly pointless. AI might give us the pleasure of finding out what happens if an entire class of workers loses faith in their careers.
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Arthur Charpentier @freakonometrics.bsky.social · 16/09/2026
"Health Effects of Wildfire Smoke Exposure" www.annualreviews.org/content/jour...
annualreviews.org
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Martin Anota @manota.bsky.social · 15/09/2026
By @freakonometrics.bsky.social !
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Arthur Charpentier @freakonometrics.bsky.social · 12/09/2026
Istanbul, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 12/09/2026
Istanbul, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 12/09/2026
Istanbul, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 11/09/2026
Istanbul, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 11/09/2026
Istanbul, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 08/09/2026
Istanbul, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 08/09/2026
www.kplx.art
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Arthur Charpentier @freakonometrics.bsky.social · 05/09/2026
Madrid, España, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 05/09/2026
Madrid, España, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 03/09/2026
Segovia, España, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 03/09/2026
Segovia, España, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 03/09/2026
Segovia, España, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 02/09/2026
Rennes, Roazhon, #bzh Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 31/08/2026
Paris, Summer 2026
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Arthur Charpentier @freakonometrics.bsky.social · 31/08/2026
Paris, Summer 2026
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Renaud Epstein @renaudepstein.bsky.social · 30/08/2026
#RomanPhoto
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