Hi, I'm Felix. I'm an eng lead working on Claude. I love watching people take flight and do things they never thought possible.
We often describe that as "being more ambitious" when using AI, which is tricky advice to follow. I wrote a tutorial:
https://t.co/vNPPs5FWm8
"Las personas conservadoras son más susceptibles a desinformación, noticias falsas y teorías de la conspiración, y los productores de desinformación suelen dirigirse específicamente a audiencias con perfil derechista. Los conservadores tb son (-) propensos a verificar los hechos"
The set of 722 results by @openai has been dropped. Probably October 6, 2026 will be remember as an inflection point in the history of math. Below are the ones closest to my heart:
(1/n)
We’re releasing a broad range of new mathematical results produced by an internal frontier model.
We’ve been consulting with the independent Advisory Group on Mathematics and Artificial Intelligence at the Institute for Advanced Study, and we have drawn on their advice and public recommendations to inform how we release these results.
https://t.co/7N6TPlft1P
Análisis de 32 millones de tweets de representantes políticos de 26 países durante 6 años: los partidos ultraderechistas son los principales responsables de difundir bulos e información falsa.
La crisis de vivienda en España: lo que creo que puede funcionar para solucionarla... y lo que probablemente no sirva o sea directamente contraproducente. En siete minutos y medio.
Dentro video 👇
Un estudio de Lancet muestra que gravar a los multimillonarios y redistribuir la riqueza salvaría millones de vidas
En concreto habría un24% menos de mortalidad general estandarizada por edad y un 33% menos de mortalidad infantil en menores de 5 años
https://t.co/zUJxDIZ7Hk
Barack Obama at his last press briefing with reporters, 2017:
"I have enjoyed working with all of you. That does not, of course, mean that I've enjoyed every story that you have filed, but that's the point of this relationship. You're not supposed to be sycophants. You're supposed to be skeptics. You're supposed to ask me tough questions. You're not supposed to be complimentary, but you're supposed to cast a critical eye on folks who hold enormous power."
#EdiciónCentral
Este es el detalle de lo ocurrido tras la agresión a un escolar en San Borja. 10 alumnos del Liceo Naval permanecen retenidos mientras las familias denuncian falta de control en el plantel.
Encuentra las noticias del día AQUÍ ► https://t.co/zLv8mA77jr
"Las personas conservadoras parecen ser más susceptibles a desinformación, noticias falsas y teorías de la conspiración, y los productores de desinformación suelen dirigirse específicamente a audiencias con perfil derechista, menos propensas a verificar los hechos"
Nuevas imágenes de cámaras de seguridad de Trujillo, obtenidas por @ensustrece, muestran a las personas que utilizaron por última vez la camioneta Hilux doce horas antes del ataque que dejó cuatro muertos.
De acuerdo con fuentes de la Fiscalía, los hombres que aparecen en el video coinciden en talla y contextura con los autores del crimen. Las imágenes debilitan aún más la versión policial que atribuyó inicialmente el ataque a los cuatro primeros detenidos. (1/5)
Cuando pasemos el SuperNiño, la Primera Gran Guerra Drónica y un par de rebeliones de la AGI, me sentaré a jugar mi Starcraft comprado con e-gold después del colapso del dólar. ¡2030!
Breaking News: Anthropic said it halted potential plots by scientists who used its A.I. models to do research that could have helped develop biological weapons. https://t.co/7Q01GZV0xA
La ultraderecha lleva años creciendo en toda Europa. Se dan mil explicaciones: la inmigración, las redes sociales, la globalización... Seguro que todas tienen algo de verdad. Pero hay un factor que los estudios empiezan a documentar y del que se habla mucho menos: el desmantelamiento del Estado del bienestar. Hilo:🧵
A collection of alarming comments made *in the last four days* by seven different people who are inside the AI world ⬇️
Jacob Coxon, former AI researcher at Anthropic and OpenAI:
"The people building AI earnestly believe that it could kill us all by the end of the decade.”
https://t.co/5Z9uJKShTN
Samuel Marks, Scalable Oversight lead at Anthropic:
"AI developers believe their technology could cause human extinction (or similarly bad outcomes). This could happen in the next few years.”
https://t.co/0r11ta1JJR
Evan Hubinger, Alignment Science lead at Anthropic:
"Jacob is correct here—we really do earnestly believe AI could kill all humans!”
https://t.co/RJ0oOKTmG6
Alex Turner, former Research Scientist at Google DeepMind:
"I left Google DeepMind in June. Jacob is right: many researchers believe they are building something that could kill everyone on the planet. It was literally my day job to think about how to stop that."
https://t.co/oShamWC3o2
Jakub Pachocki, Chief Scientist at OpenAI:
"This is a time that calls for extreme caution. I am concerned no one is prepared for the consequences of a continued rapid rise in machine intelligence.”
https://t.co/TLpzxwHYBl
Jason Wolfe, Researcher at OpenAI:
"I don't know what my probabilities are on literal extinction, but I think there are a number of ways AI could go poorly for humanity, and at the current frankly terrifying pace humanity will be quite lucky if we manage to find and stay on the narrow path between all the bad outcomes.”
https://t.co/HaqDHDz6Fi
Jonathan Richard Schwarz, former Senior Research Scientist at Google DeepMind:
"I left DeepMind after 7 years (and since rejected offers to join the other two) due to severe concerns about the concentration of power these labs represent. What is currently happening in this field is deeply unhealthy for society.”
https://t.co/WD5U958Yuy
(I made this unimpressive screenshot montage but linked to their thoughts in full above)
Paul is one of the ~3 most credible AI safety experts in the world. Co-invented RLHF, served at US CAISI, a real OG in LessWrong x-risk circles. (His early debates with Eliezer Yudkowsky are famous among the safety crowd and people still cite his "What Failure Looks Like" post from 2019.)
He is joining the OpenAI nonprofit board now because he now believes "there is a meaningful risk that rapid acceleration in AI capabilities leads to catastrophic and irreversible loss of control in the very near term."
Shit is getting real!