CEO @CopilotIQ, angel investor ( Rappi, Supabase, Astranis, Stoke Space, Colossal, Akido, Wintermute, Jeeves, OpenPhone, Shef) pilot, aspiring nomad.
Bay Area
Joined January 2011
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Doctors used to taste test urine to check for diabetes. Said one, it was "wonderfully sweet as if it were imbued with honey or sugar."
In 100 years our healthcare will be viewed the same way
I was in a Learjet 60 that did an emergency landing in my early 20's and nearly crashed. Very lucky to be alive. Will never fly in a Learjet ever again.
I also got my pilot's license at the same place as the co-pilot of yesterday's crash, so it hits hard.
RIP to the families.
Food for thought for anyone reading this.
Literally EVERY single pilot I know has put themselves in a situation that they were lucky to survive.
It happens SO MUCH FASTER than you can imagine, and often starts feeling so trivial... until it doesn't.
teapaw.org/dkoretz/status/2117486…
When I started flying, one of the first books I read was called "The Killing Zone: How and Why Pilots Die."
On paper, it all looks stupid simple.
But then I lost my engine at low altitude while instrument training over Lake Okeechobee which is nothing but alligators and snakes
In my first ever solo flight as a student pilot, I had a plane at Pompano Airpark f up the pattern and got collision warning on my PDF as I was turning downwind.
I had a rude controller at PBI send me directly into a storm.
EVERY pilot on X has a war story or 10
David Koretz retweeted
A company sent an AI recruiter to interview him, so he sent his own AI agent instead
The two AIs discussed the job between themselves. No human was on the call
Then both of them glitched, and got stuck saying goodbye to each other. Endlessly
Job interviews in 2026: your agent talks to their agent, and neither knows how to hang up
San Francisco is BACK. Last year Ferry Building was a ghost town, today it is wall to wall people. Crazy what a difference a year makes.
Excited for the team, and thrilled to be a small part of their Seed round!
Excited to announce Volantis's $88M Series A.
We are solving Al's memory bottleneck by using optics, enabling chips with huge amounts of fast & cheap memory.
By boosting both the memory bandwidth and capacity per chip by orders of magnitude, we enable ultra-fast inference (up to 10,000 tps/user) for large models (>10T) - with low $/tok to boot.
Initially, this will enable insanely fast agents - think coding agents that finish in minutes or even seconds instead of hours.
More excitingly, optics is a fundamentally scalable way to increase memory systems. Not 2X/year, but by orders of magnitude across new generations. This will enable a structurally new Al industry, including restarting scaling laws, holding entire repos in context windows & more.
Our team has pioneered many core semiconductor technologies: the 1st CoWoS product, early HBM, the 1st silicon photonics CPO systems, the 1st high volume tunable VCSELs, the 1st processors to directly communicate using light & more.
We’ve already sent data >10× farther than equally tiny electrical wires inside a chip package. Our next iteration is already taped out and targets world-record bandwidth density over relevant distances, read more: volantissemi.ai/news-insight…
Congrats Marissa! Looks awesome!
If a picture is worth a thousand words, your camera roll is worth millions.
That’s why we built Dazzle, an AI assistant that turns your camera button into a "get it done" button. No blank prompts, just instant context and action. 🚀
Read the full launch post: dazzle.ai/blog/ 🎉
The decline of @TEDTalks is incredible unforced error. Early days were nothing short of amazing. The audience, the speakers, the energy. All of it
And then they lost the plot. TedX watered down brand & created confusion, attendees became studio audience & views/likes > content
David Koretz retweeted
Reminder to go touch grass
A scientist in Japan demonstrated that the air inside a forest strengthens your immune system for a full month
The study is incredibly fascinating:
Qing Li, an immunologist at Nippon Medical School in Tokyo, took 12 men on a 3-day forest trip. These were slow walks with no breathing exercises and no set route.
Then he tested their blood and found a surge in natural killer cells -- the immune cells your body uses to fight cancer and virus-infected cells.
Remarkably, the effect didn't fade when they went home, it was still measurable 30 days later.
A control group that walked the same distance through a city showed no change at all.
Pine, cedar, and cypress trees release compounds called phytoncides to defend themselves from insects and bacteria. You breathe them in, and Li believes they switch your immune cells into high gear.
He estimates one forest walk a month may be enough to keep those cells elevated all year.
The best medicine might not even need a prescription -- just a walk among the trees.
Our understanding of aging may be severely flawed . @Yale study just published shows HALF of 65+ show cognitive and/or physical IMPROVEMENT as they age
ysph.yale.edu/news-article/y…
Any scientists have a view on the credibility of this study? IMO it's hard to know if you're seeing cause or effect. Certain preservatives = you're eating highly processed food. So how to isolate the preservative from the food it's in?
cnn.com/2026/01/07/health/fo…
Amazing leadership by @VernBuchanan @RepDwightEvans and @RepSmucker to free up critical hospital beds for those that need them, and give Americans the dignity of recovering at home when possible!! 👊🇺🇸 aha.org/news/headline/2025-1…
BIG news from @CMSGov today! Awesome to see the priority on technology to help older Americans get better care, coupled with a focus on paying for outcomes.
Dr Oz is doing an awesome job leading CMS!
youtube.com/watch?v=tQE-97Xz…
Excited to be a speaking at the Hospital@Home summit in Orlando! Such a massive opportunity to improve patient outcomes and drive down healthcare costs for everyone!
@ICD Media Group - #ICD, #ICDMedia #HospitalAtHome