Zoe Zoe ✡🚲🎾

Un helado comiendo otro helado

The physics of why bicycles stay upright is one of the most embarrassing unsolved problems in classical mechanics. For 150 years, textbooks said gyroscopic precession from the spinning wheels kept you balanced. In 2011, a team at Cornell and Delft built a bicycle with counter-rotating wheels that canceled all gyroscopic effects. Zero precession. The bike still stayed upright. Then they said it was trail, the geometric offset where the front wheel touches the ground behind the steering axis. The Cornell team built a bike with zero trail. Still stable. They published in Science. The title was basically "we've been teaching this wrong for a century." The actual mechanism is a feedback loop between your lean angle and the steering geometry. When you start to fall left, the front wheel turns left, which pushes the contact patch under your center of mass. You correct without thinking. Your vestibular system and motor cortex run a continuous control loop at roughly 5-10 corrections per second. The reason you fall when you stop is that the correction loop needs forward velocity to function. Below about 5 mph, the geometry can't steer fast enough to catch your lean. Einstein was right about the keep-moving part. He just got the mechanism backward. Balance on a bicycle has almost nothing to do with momentum. It's a real-time control system that happens to require motion as an input. The cyclist in this video doing a track stand is running that control loop manually at near-zero velocity. That's harder than riding at full speed. The scooter passengers don't need any of this. Three wheels. Static stability. Physics solved that one a long time ago.

Movimiento social ascendente, héroe de la clase trabajadora. Al pibe Bieber hay que bancarlo.

This is the official poster marking #YomHashoah 2026 The image in Yoav Kahana's poster depicts the "absence" within the "presence"; the personal and collective rupture to the Jewish people engendered by the Holocaust. This rupture accompanied the survivors as they searched for living relatives and were met with an aching void. Learn more: bit.ly/4lDfwjC

Permiso Retribuido TODAS familias + igualar semanas todas las familias - ¡Firmá la petición! c.org/2qRc6DGwpr a través de @ChangeorgAR

Permiso Retribuido TODAS familias + igualar semanas todas las familias - ¡Firma la petición! c.org/V6wJMRSzQt a través de @change_es

Happy birthday Tel Aviv, you're the best!

@Aboujahjah Lebanon should have given citizenship to Arab refugees and expel at every point LPO and Hezbolá terrorists if they didn't want to be treated as terrorists themselves.

Lebanese here. Israel destroyed our house in 1976, I was five. We were ethnically cleansed to another town. Israel destroyed our home again in 1982, I was 11. We escaped with our life and rebuilt our home. Israel destroyed it again in 2024. No one believes your lies.

Mathematics. Functions. Dance.

Ustedes también van al dentista bien vestido con la creencia de que reduce la probabilidad de que el dentista sea negligente y cometa mala praxis?

american sports teams: miami beach manatees (ex detroit dynamite) european teams: ayatollah mohtaba khamenei presents antwerp fc brazilian teams: orquidea silvestre da silva do maracaibo argentine teams: union cooperativa electrica de san martin de junin

Nunca borraré esta red social

Claude está ofreciendo 13 cursos y certificaciones de IA. Todos gratis. Aquí tienes los 13 enlaces (+ mis propias guías): Ve a cada enlace de abajo. Inscríbete. Es gratis. --- 1 - Claude 101. Aprende Claude para el trabajo diario. ↳ anthropic.skilljar.com/claude-101 2 - AI Fluency: Frameworks & Foundations. ↳ anthropic.skilljar.com/ai-fluency-fra… 3 - Introduction to Agent Skills. ↳ anthropic.skilljar.com/introduction-t… 4 - Building with the Claude API. ↳ anthropic.skilljar.com/claude-with-th… 5 - Claude Code in Action. ↳ anthropic.skilljar.com/claude-code-in… 6 - Intro to Model Context Protocol. ↳ anthropic.skilljar.com/introduction-t… 7 - MCP: Advanced Topics. ↳ anthropic.skilljar.com/model-context-… 8 - AI Fluency for Students. ↳ anthropic.skilljar.com/ai-fluency-for… 9 - AI Fluency for Educators. ↳ anthropic.skilljar.com/ai-fluency-for… 10 - Teaching AI Fluency. ↳ anthropic.skilljar.com/teaching-ai-fl… 11 - AI Fluency for Nonprofits. ↳ anthropic.skilljar.com/ai-fluency-for… 12 - Claude con Amazon Bedrock. ↳ anthropic.skilljar.com/claude-in-amaz… 13 - Claude con Google Cloud Vertex AI. ↳ anthropic.skilljar.com/claude-with-go… --- Los cursos oficiales están bien. Pero son teóricos. Dos veces por semana comparto guías prácticas con IA en mi newsletter Todo esto es gratis. Así puedes acceder: 1. Ve a reinoia.com y añade tu email. 2. En el sitio tienes todos los artículos anteriores y recibirás los próximos por correo.

@mehdirhasan Jews are a nation and have a right to self-determination that other peoples enjoy.

A reminder that this guy lives in America where he could never get away with saying that we need to "preserve a Christian majority" or we need to preserve a "white majority" in the US. Ethno-nationalism is bad if you believe in secular liberal democracy. Let's stop pretending.

the current fear is is that AI homogenizes culture and turns humans into passive consumers one counterpoint: in Go, human play showed very little improvement from 1950 to 2016 until alphago beat lee sedol - then human decision quality jumped. players started developing moves that were distinct both from previous human moves and from the novel moves introduced by machine intelligence this seems more likely to me - fun times ahead

Un estudio de 1700 idiomas identifica patrones universales que nos hablan de los factores cognitivos y comunicativos que dan forma a nuestras lenguas. Artículo original 👉 nature.com/articles/s41... Resumen 👉sciencedaily.com/releases/2026/…

No estoy listo para que esto sea musica de viejo.

Condiciones dignas en el primer ciclo de Educación Infantil - Sign the Petition! c.org/BMdvr9t4T4 a través de @UKChange

The cartoon series Tom & Jerry remains iconic. You might see the music by Scott Bradley as being trivial, but it is a highly sophisticated fusion of Jazz & modern classical music. If is devilishly difficult to play. Sometimes atonal, (lacking harmony) it also reflects the increasing use of percussion, which is mainly a classical music initiative. You can just imagine Tom getting his comeuppance.

I like how dramatic this photo is for no reason; the Easter Bunny waiting to be introduced by Trump.

[REDES] "¿Quién gana?": con Inteligencia Artificial, un usuario creó la “pelea de vale todo” entre Wanda Nara y la "China" Suárez. 🥊