
wearer of many hats: founder of https://teapaw.org/t.co/K6ZBOItG2r, https://teapaw.org/t.co/Tdur51jNFz (acq. @airtable), pm @twitter, vis @fivethirtyeight, research @uwdata, eng @uber
New York
Joined January 2010
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Replying to @matsonj
possibly send an agent to double check labels based on the subtitles? the banh mi one is a hot dog, and the one below it is a meatball sandwich for example
I'm beginning to think the Bouba-Kiki effect is more important than we ever dreamed
interpretability might be the most important scientific problem in the world right now, as I don't think we can solve alignment if we don't know what we're building. I think I have good news about it. I co-authored early work in mechanistic interpretability at OpenAI and came away pessimistic, because neural networks appeared to fold into arbitrary tangled knots. years later, I started openai's first large-scale automated interpretability project, finding about 2% of neurons legible with the primitive tools we had
with modern agentic tools and a much closer look, the picture looks totally different. the vast majority in models up to trillions of parameters are legible, and their circuits beautiful. many famous examples of tangled neurons turned out to be misunderstood. The roadblocks I expected mostly aren't there. I now think ambitious interpretability will be solved by the time we need it most, and possibly quite soon, as automated scientists keep improving. it may be a bitter lesson for interpretability: the simple thing, at absurd scale, works
already-clean.goodfire.com/
really outstanding video from @hankgreen youtu.be/Fj-INVmmILo?si=a9cC…
productivity comes from working on things that matter to you
Several weeks of silence, then again a few more weeks. No doubt with the fine increasing.
Two different threads.
this is more than a little annoying to see, after seeing how allergic VCs are to the senior market first-hand over the last couple years
lol it's real: youtu.be/zdbVtZIn9IM?t=15948
insane
Spent last week off the grid, hunting truffles in Umbria. Strongly endorse getting the fuck out of town every now and then.
Back in SF now to find a new mission. Pour the AI directly into my veins.
If you're stuck in the Bay Area tech rat race / psychosis, make time to travel to other places.
Go to a small town in Europe or visit Asia - you'll see that life can be about much more than whether you're IC7 or IC8 or what company you work for.
Don't be the person to put on your tombstone: "He got divorced and neglected his kids but at least he made D2 at FAANG"
required watching for anyone working on voice AI products: youtube.com/watch?v=8SkdfdXW…
Replying to @pitdesi
i totally forgot tj's does bamba now! this is what i'm used to seeing
An update on Hotline: I recently decided to wind down the company, and have been working on finding the product a new home.
I spent the last year exploring how AI could better serve older adults. We built wearables, home hardware, novel voice interfaces, and eventually Hotline.net: a team of AI experts you can reach by phone, text, or email, using nothing you don't already have.
I loved working on this problem and I'm still bullish on the market. Seniors are the fastest growing and most underserved demographic in tech. For the first time in American history there are more of them than children. The incumbent products are embarrassing. Not enough people are trying to fix that.
The core bet was that the most accessible AI interface is the one people already use every day, not a new app they have to learn. I think that's held up. Poke, OpenClaw, Linq, Claude Code's SMS integrations. There's still a lot worth building here.
To our users, my team, and my investors: this was a privilege. Thank you.
Excited to get back out in the arena soon!





















