Working on excellent education and excellent cities. Chair @cayimby. Previously: founded Quizlet, CPO at AoPS, CS at MIT. [email protected]
San Francisco, CA
Joined March 2011
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Astonishing new UI technology
Imagine every pixel on your screen, streamed live directly from a model. No HTML, no layout engine, no code. Just exactly what you want to see.
@eddiejiao_obj, @drewocarr and I built a prototype to see how this could actually work, and set out to make it real. We're calling it Flipbook. (1/5)
2700k or lower (2400!) and 90+ cri (higher the better).
Changes everything.
If you are visiting family for the holidays, order ahead some 2700k bulbs and surreptitiously swap them into every fixture.
No one has to know, just quietly enjoy everyone's dramatically improved mood.
amazon.com/Sylvania-40821-Eq…
AoPS 👇
all my life i've been told that i'm naturally gifted at math because i'm chinese. straight A student. math major at ucla. but here's what people don't know:
when i was in 8th grade, i got a B+ in geometry. my dad said "that's unacceptable", bought a geometry textbook, and proceeded to assign me daily problems for 6 months. then i got good at geometry.
i wasn't born gifted at math(ok maybe a little), i just grew up in an environment where being good at math was a requirement. this book is filled with extra math problems my dad assigned me.
and i hated him for it. it took me 10+ years to realize how thankful i am that he pushed me like that. how that was simply his love language.
The first rule of politics is to learn how to count -LBJ
CA YIMBY is the best team in the business. Just passed historic upzoning reform in both houses with zero margin.
Figma and @zoink represent the best of Silicon Valley - quality craftsmanship, a positive sum attitude, tool-making for the masses, generosity of spirit.
A great day for the good things that SV represents.
Incredible execution & great company with great vibes. Congrats @christinacaci!
Today, we’re announcing @TrustVanta's Series D and new valuation – $4.15 billion – led by @Wellington_Mgmt alongside @sequoia, @ycombinator, @CrowdStrike, @GoldmanSachs, @jpmorgan, @craft_ventures, and @Atlassian.
Vanta’s mission is to help businesses earn and prove trust.
Team USA won 5 IMO golds and 1 silver.
AoPS is critical infrastructure supporting it all. Honored to be part of it!
Congratulations to Team China for winning decisively at the 2025 IMO. Team USA won second, followed by South Korea, Japan, and Poland.
The International Math Olympiad is in Australia this year. Students are testing now, results in a few days!
A real before/after moment for California. A moment where we actually, finally, truly became serious about solving our housing crisis.
CEQA reform is here!
Total victory for YIMBYs today.
We did it. We actually did it!!
VICTORY!
The biggest housing CEQA reform ever just passed the Legislature!
Many thought we were chasing at windmills when Asm. @BuffyWicks introduced AB 609, a clean CEQA exemption for infill housing.
Today, we showed them that CA can and will end its housing shortage!
