David Ulevitch

David Ulevitch

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GP at a16z; former Cisco/Umbrella; cyber and national security policy/industry intersections.

CIA Claims Impossible Quantum Heartbeat Detection, Then Proves It
SocialApr 8, 2026

CIA Claims Impossible Quantum Heartbeat Detection, Then Proves It

Meanwhile at the CIA: “Okay, so we’re gonna tell them we can detect heartbeats 20 miles away with a quantum crystal that oscillates at 300 gigawatts.” “Come on, nobody will ever believe that.” “Just watch.” https://t.co/D1OIRroNIl

By David Ulevitch
Decimated Iranian Leadership Leaves Negotiations Uncertain
SocialApr 8, 2026

Decimated Iranian Leadership Leaves Negotiations Uncertain

Who did we agree to this deal with? We’ve decimated IRGC leadership. We’ve decimated Iranian political leadership. We haven’t seen Ayatollah Jr. These are all positive disruptions, but who are we negotiating with? Is the Iranian government functioning?

By David Ulevitch
Trade‑focused “Lambda School” Could Thrive for Decades
SocialApr 7, 2026

Trade‑focused “Lambda School” Could Thrive for Decades

My hot take of the day is that a Lambda School for electricians, CNC machinists, and other advanced manufacturing roles would do very well for the next 20+ years. Maybe longer.

By David Ulevitch
Alleged Advanced Life‑Detection Device Proven Fake
SocialApr 7, 2026

Alleged Advanced Life‑Detection Device Proven Fake

I don’t doubt some very advanced human life detection capabilities exist but there is absolutely no way this device exists even close to as described. Someone told a total BS story to a reporter. Incredible trolling. https://t.co/Fze3poXw0S

By David Ulevitch
Middle East Coverage Is a Dumpster Fire Despite Decent Features
SocialApr 6, 2026

Middle East Coverage Is a Dumpster Fire Despite Decent Features

Some of the recipes are okay, and wordle is cool, but their Middle East coverage is an absolute dumpster fire. Maybe @x knows more than Nate.

By David Ulevitch
Iran Lacks North Korea's Deterrent and Chinese Shield
SocialApr 5, 2026

Iran Lacks North Korea's Deterrent and Chinese Shield

North Korea is protected for a few reasons: it holds Seoul hostage with conventional weapons giving it a second strike deterrent, it’s protected by China, etc. Iran has none of those dynamics. This makes no sense.

By David Ulevitch
Cluster
SocialApr 2, 2026

Cluster

Says the guys launching cluster munitions at civilian buildings in Israel and blowing up random buildings in gulf states.

By David Ulevitch
CEOs: Attend Only When Speaking, Otherwise It's Counterproductive
SocialApr 2, 2026

CEOs: Attend Only When Speaking, Otherwise It's Counterproductive

For CEOs, if you're speaking at an event, it's sometimes >0 value to attend (get customers, recruit talent, raise profile, practice pitch, etc.). If you're not speaking at an event it's generally <0 value to attend.

By David Ulevitch
Europe's Actions Prove US Needs Greenland Bases
SocialApr 1, 2026

Europe's Actions Prove US Needs Greenland Bases

Europe basically providing the evidence for why America needs military bases in Greenland. Which we will frustratingly have to use one day to protect Europe (again).

By David Ulevitch
Call for Honest Reporting Over Deceptive Media
SocialApr 1, 2026

Call for Honest Reporting Over Deceptive Media

Doubt I’ve ever seen a story with more falsehoods and deceptive language in the first two ‘graphs in my life. What an absolute trash piece. We need more @PalmerLuckey’s and less liars like Nathan. Can’t believe an editor let this...

By David Ulevitch
The Cut's False Article on Cornell Hospital Faces Backlash
SocialMar 30, 2026

The Cut's False Article on Cornell Hospital Faces Backlash

So @TheCut wrote a hit piece on the @WeillCornell Alexandra Cohen hospital and of course it’s not true and worse they used photos of people who had great deliveries and some who didn’t even have a baby there. The comments...

By David Ulevitch
60 Minutes Explores Ukraine Drone War’s Global Impact
SocialMar 30, 2026

60 Minutes Explores Ukraine Drone War’s Global Impact

Excellent segment on @60Minutes about the drone fight in Ukraine and the broader ramifications. Great to see @WilliamMcNulty and others featured: https://t.co/G13jDK1RYZ

By David Ulevitch
Warren Vows to Protect Anti‑terror Financing Networks
SocialMar 5, 2026

Warren Vows to Protect Anti‑terror Financing Networks

Elizabeth Warren says she’ll do everything she can to stop dismantling the financial networks that fund terrorism (Iran). Given her track record of stopping things, that’s actually pretty reassuring.

By David Ulevitch
Pentagon Embraces Commercial AI to Accelerate Defense
SocialMar 3, 2026

Pentagon Embraces Commercial AI to Accelerate Defense

Incredible conversation with @emilmichael. - Lessons from tech for the Pentagon - Peacetime vs wartime speed - Making applied AI his #1 focus - The AI race with China - Commercial AI in the Pentagon https://t.co/xQpz6pZAQK

By David Ulevitch