Our @GoogleResearch Connectomics team, in collaboration with @HHMIJanelia, has released the complete wiring diagram of a male fruit fly’s brain and central nervous system — the largest brain map by number of proofread neurons to date.
So, why do we care so much about a tiny fly's brain? 🧵👇
I've been fascinated by this building since reading about it ten years ago and finally got to see it in person today.
It's called Tietgenkollegiet, one of Copenhagen's most interesting buildings. And it's a student dorm.
It's basically an experiment in whether architecture can make strangers become friends.
~390 students live here. Private bedrooms face outward, while the shared spaces, kitchens, lounges, etc. face inward toward a huge central courtyard.
So you can literally see other people cooking, hanging out, and gathering across the courtyard.
Instead of telling people to “build community,” the architecture makes it happen naturally.
I would've LOVED to live here as a student.
This is biblical.
A woman in her eighties. Ten years into Alzheimer's. Hadn't spoken a full sentence in five years.
Takes one, 5 gram dose of psilocybin.
She slept 19 hours and woke up and spoke for hours about her life, recognized family and held real conversations. She regained bladder control after five years, walked on her own. and dressed herself. Gains held for weeks.
Today, we share a breakthrough on the planar unit distance problem, a famous open question first posed by Paul Erdős in 1946.
For nearly 80 years, mathematicians believed the best possible solutions looked roughly like square grids.
An OpenAI model has now disproved that belief, discovering an entirely new family of constructions that performs better.
This marks the first time AI has autonomously solved a prominent open problem central to a field of mathematics.
The Greatest Flex of the 21st Century: Semiconductor
> Refine common sand into 99.999999999% pure silicon ingots.
> Slice the crystal into wafers thinner than a human hair.
> Use Extreme Ultraviolet light to print patterns at a molecular level.
> Etch circuits so small that a single speck of dust is a mountain.
> Physically blast atoms into the silicon to program its behavior.
> Polish the surface to a flatness that defies the laws of physics.
> Weave miles of microscopic copper wiring between billions of transistors.
> Use electron microscopes to hunt for defects smaller than a virus.
> Dice the wafer and encase it in a shell with gold connections.
> We have turned the most basic element of the Earth into the world's most valuable resource.
We are literally manipulating matter at the atomic level to create the digital world.
There's a fruit fly walking around right now that was never born.
@eonsys just released a video where they took a real fly's connectome — the wiring diagram of its brain — and simulated it. Dropped it into a virtual body. It started walking. Grooming. Feeding. Doing what flies do.
Nobody taught it to walk. No training data, no gradient descent toward fly-like behavior. This is the opposite of how AI works. They rebuilt the mind from the inside, neuron by neuron, and behavior just... emerged. It's the first time a biological organism has been recreated not by modeling what it does, but by modeling what it is.
A human brain is 6 OOM more neurons. That's a scaling problem, something we've gotten very good at solving. So what happens when we have a working copy of the human mind?
We've uploaded a fruit fly. We took the @FlyWireNews connectome of the fruit fly brain, applied a simple neuron model (@Philip_Shiu Nature 2024) and used it to control a MuJoCo physics-simulated body, closing the loop from neural activation to action.
A few things I want to say about what this means and where we're going at @eonsys. 🧵
🚨 Acaban de copiar el cerebro completo de una mosca de la fruta dentro de un ordenador.
Los científicos escanearon cada neurona y sinapsis y lo conectaron a un cuerpo simulado en un entorno virtual.
La mosca empezó a caminar, comer y comportarse sola.
This is one of the coolest articles I’ve read here. Not surprisingly, it’s from Alex, who for me is the true intellectual heir to Ray Kurzweil in the age of the Singularity!