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Today’s CO₂ high score was well over 3,000 ppm. I was in ten classrooms today and all but two were over 1,500

Good time for me to start my HVAC business fixing school air quality.

a not-insignificant number of friends I've made have come from reporting bugs and typos on peoples' websites

The info density from AI explanations can be very high, if you tune it right. An experiment by Zain and me (mostly Zain):

SF is a barely serious city in terms of cities.

I built a realtime multimedia tutor that: 🎨 Generates visuals in realtime (diagrams, photos, sketches) while it speaks 👁️ Sees what you see (via camera/screenshare) to help in context ✍️ Writes key facts, equations, details on the screen — no rambling monologues Watch me point

as a child I felt all of the problems in the world came from adults that didn't care, so i swore a oath to never become one of them, i would always care, even if it burns

People think California is 'full'. We could fit a billion people and still be less dense than Paris. And that's just on existing developed land. We are so far from the limits.

AoPS should have a Wikipedia page. Notable alumni section will be crazy. Who can make this happen?

We are gonna upzone near transit this year fr this time

California had 9.5 GW of batteries powering the grid this evening. More than any other source.