Amazon, ex-search/recommendation/ML at @mercari_jp. Former NumPy/Scipy core contributor. Occasional musings on economics/music/Japanese culture

Joined June 2010
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Pinned Tweet
Scipy Japan 2019 schedule is on: talks about chainer, tensorflow, RAPIDS and more: scipyjapan2019.scipy.org/sch… all the talks will be available in both english and Japanese through translation

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David Cournapeau retweeted
Replying to @pmddomingos
everyone has to earn their keep, and conditions are now infinitely nicer than going through shell corps in the philippines
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David Cournapeau retweeted
If you need AI to do a search for you in the real world, ds4-agent is basically SOTA, because it can access the web sites without any limitations given that it uses your local Chrome browser (no, not in headless mode, that's the trick...), and DeepSeek v4 is great at search.
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David Cournapeau retweeted
Je fais un peu de retape mais À l'écoute de leurs podcasts on se rappelle à quel point Éconoclaste, le blog de Stéphane Menia et @adelaigue était passionnant. open.spotify.com/episode/6SI…
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David Cournapeau retweeted
Because they're the ones who are stereotyped the most as behaving this way.
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David Cournapeau retweeted
Jun 13
Cette question est impossible. Aucune classe de première ne contient 75% d'hellénistes.
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David Cournapeau retweeted
The entire point of the software industry was that the marginal cost was zero: one more install cost you nothing but you still charged for it. That justified the massive R&D investment required to produce said software. If it's all artisanal software with an audience of one or few (with all marginal surplus flowing to model companies), then a lot more has to change here than the dev workflow.
Replying to @antoniogm
Ha! Yeah, I think it's an interesting case where the production frontier shifts and almost all the value accrues to consumer surplus. So there's tremendous welfare value to AI, but just no economic value: no rents to be captured. However, I'm willing to hear the counter-argument that the apps that did well involved some kind of social coordination mechanism and my personal apps obviously don't do that, so apples and oranges. However, the counter-counter argument is that reviews and app store utilization might be flat for other reasons (maybe attention is saturated), so it doesn't mater how much AI helps with software. Lack of adoption isn't the software's fault.
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David Cournapeau retweeted
Replying to @Grady_Booch
The problem is that most people take use cases as a tool for synthesis rather than analysis. A use case can help test a design, but too often it guides the design, resulting in overfitting.
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David Cournapeau retweeted
There is no way this is real, but it would be absolutely hilarious if it were.
NEW: The reported 14-point draft Iran–US memorandum proposes: Immediate and permanent ceasefire across all fronts, including Lebanon. US commitment not to interfere in Iran’s internal affairs. End of the naval blockade and reopening of the Strait of Hormuz within 30 days. US military withdrawal from areas surrounding Iran. Suspension of oil-related sanctions and restoration of Iran’s access to its revenues. $300 billion in reconstruction plans/funding from the US and allies. 60 days of negotiations toward a final agreement focused on Iran’s nuclear program and broad sanctions relief. Iran reaffirms it will not develop nuclear weapons under the NPT. No new US troops or sanctions during negotiations. Release of $24 billion in frozen Iranian assets during the negotiation period. Creation of a monitoring mechanism and UN Security Council endorsement of the final deal. Missile programs and Iran’s support for regional allied groups would be excluded from the talks. Source: Mehr
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David Cournapeau retweeted
Old joke. "Three friends, a Russian, an American, and a Frenchman, are talking one night, and the topic comes up; what would you do if it was the last day on Earth? The American says; 'I'd take my boy out to a ballgame, and we'd eat all the hot dogs and drink all the beer and enjoy life to the fullest!' The Frenchman says, 'I'd spend the day with a beautiful woman in one arm, and a bottle of champagne in the other, and enjoy life to the fullest!' The Russian goes quiet. And eventually he says 'the last day on Earth, you say?' "Da, da, the last day on Earth! How would you spend it?' The Russian goes quiet, eyes gazing at the distant clouds, and says wistfully - 'I would burn my neighbor's house down."
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David Cournapeau retweeted
Jun 13
On en reparle dans 4 ou 5 ans 😬
Ces étudiants auraient pu enterrer toutes leurs valeurs et se taper 6000€/mois à vie dans une multinationale avec un diplôme de l’X, mais ils ont préféré ne pas se renier. GROS respect. C’est ça qu’on aime bravo les gars 🫡
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David Cournapeau retweeted
I’ve had a number of conversations with folks inside and outside government about the current situation with Anthropic, and here is what I believe to be true: — As we know, Anthropic publicly released its Mythos class models earlier this week under the commercial name Fable. — Fable is Mythos with guardrails. But if those guardrails fail, then you’ve exposed Mythos and its advanced cyber capabilities to people who shouldn’t have them. (Keep in mind that Anthropic itself widely promoted the idea that Mythos was a cyberweapon and needed to be regulated as such. They asked for government regulation of Mythos and championed the guardrails on Fable. If there is a vulnerability — big or small — it is Anthropic’s responsibility to patch.) — A highly credible trusted partner of both Anthropic and the USG who was testing Fable came forward with a jailbreak of those guardrails. The Admin asked Dario to fix the jailbreak or de-deploy the model. Dario refused. — In their blog post, Anthropic defended its decision by saying the jailbreak isn’t serious. That is not what the trusted partner and the USG believe; nor is that kind of minimizing language consistent with Anthropic’s brand as the AI safety company. It’s difficult to fathom how they could claim a jailbreak allowing operability of a cyber weapon could be defined as not “serious.” — In the past, Anthropic has always said that safety must be top priority and taken super seriously. In this case, Anthropic prioritized the continued offering of the consumer model over safety. — In reaction, the Admin issued the export control. The Admin did this reluctantly. It’s been very surprised that Anthropic hasn’t wanted to cooperate with a reasonable safety request (ie fixing the jailbreak issue). Anthropic’s reaction is very much at odds with their branding and ethos as a safe AI research community. — The Admin’s hope now is that Anthropic remediates the safety issue, the export control is lifted, and Fable goes back into general release. The Admin wants all of this to happen as soon as possible. It is frankly bewildered that Anthropic hasn’t wanted to comply with safety requests that it previously said were its highest priority. — Those trying to misdirect and tie this action to the prior DoW/Anthropic issues are wrong. The Admin values Anthropic’s technical capabilities and feels that this issue, while serious, should be easily resolved. The ball is in Anthropic’s court.
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David Cournapeau retweeted
ICYMI: "Watashi" is considered the safe feminine pronoun in Japanese, but that norm only dates to the Meiji Era. Today, a growing number of young girls are reaching for the nominally male "boku" instead.
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David Cournapeau retweeted
This is a *way* bigger deal than it seems... Frontier AI companies will *never* own the frontier again I kid you not... I've been waiting for someone to show this result for like 4 years... this is a huge deal. The short reason: combinations of models will *always* outperform individual models The long reason: this is the gateway to a million times more data... and huge leaps in compute efficiency. The AI scaling laws always win. More in article below 👇
Introducing the Fusion API, the smartest compound model in the market. Fusion achieves Fable-level intelligence at half the price. How it works 👇
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David Cournapeau retweeted
The "natural state" is a very weird argument thrown in debate by all the shades of idiotic radicals. Conservatives (being gay is bad), environmentalists (pesticide is bad) and leftists (too many bananas is bad). We should have a large island for them.
in nature if a monkey hoarded 1 trillion bananas the other monkeys would beat that monkey to death and take his bananas
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David Cournapeau retweeted
Huge reveal from the guy who spent years attributing the strength of his nocturnal erections to eating lettuce and limiting his exposure to blue light
I take Cialis, but not for sex. It’s actually a longevity medicine. Cialis (Tadalafil) is great for the same reason it gives you fantastic erections… it improves blood flow. Studies show that Tadalafil… 34% reduced all-cause mortality 27% reduced major heart disease 34% reduced stroke 32% reduced dementia It has also shown benefit in insulin sensitivity, metabolic health, and reduction of body fat. Women have blood vessels too, so theoretically they'd get the same longevity upside. The research is thinner, but early signals are promising. It’s sad that when men and women could benefit from it can miss out because it’s taboo. My protocol is 5mg daily and I've been on it for about two years. *Observational research shows associations, not causation. Outcomes may be influenced by underlying differences in study populations. This is not medical advice and is shared for informational purposes only.
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David Cournapeau retweeted
Literally the worst cable management I've ever seen in my life
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David Cournapeau retweeted
Out of all the replies this solution looks especially clean x.com/lolbrandonk/status/206…

What’s the best way for non developers to 1. share skills with their team 2. automatically enforce that it’s always updated for everyone if changes are made 3 allow others to update it centrally Github is not the best solution as it’s too clunky and doesn’t solve #2 Notion is a little better but can’t put code there I’m tempted to create my own tools but someone surely has created this already??
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David Cournapeau retweeted
Musk became Donald Trump's #1 political donor, assumed a high-profile role early in his administration, and in that role inflicted incredible harm on some of the most vulnerable people in the world while failing to achieve any of his stated goals. slowboring.com/p/yes-doge-fa…
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