Eric Kerr

Fan of scuba diving, skiing, and mapping new things. Building @TruckMapHQ

[Aaron Levie @levie]

The app layer couldn’t get a better advertisement than a company spending $500M to build their own version of it. Obviously lots of nuance here that can’t be captured in the headline, but this should make you very bullish on software.

[Zach Klein @zachklein]

Richard Nadler's work is my personal catnip.

https://t.co/R49rZlK1vU

[Ramin Nasibov @RaminNasibov]

What a cool style the cassette had.

[ArtButMakeItSports @ArtButSports]

@AnaheimDucks Proposal for a PROUN street celebration, by El Lissitzky, 1923

[WORLD VIEW @beauti_animals]

Cherry Blossom Japan 🇯🇵

[Cursor @cursor_ai]

We're releasing a technical report describing how Composer 2 was trained.

[Greg Brockman @gdb]

How AI empowered Paul Conyngham to create a custom mRNA vaccine to cure his dog’s cancer when she had only months to live. The first personalized cancer vaccine designed for a dog:

[The Kobeissi Letter @KobeissiLetter]

https://t.co/BH00Vpy4WF

[Eric Kerr @erickerr]

@samlambert When's neki sharding going to be available?

[Tyler Fox @smileyborg]

Software engineering in 2026

[❤️ @campedersen]

i fit a hyperbolic curve to five AI metrics and found a date. one metric is actually going vertical and it's not the one you'd expect
​https://t.co/fZHd0r3TVd

[Slow Ventures @slow]

Undersea infrastructure is the single most fragile layer of the global economy yet nobody in tech is paying attention.

Here are the facts:

> Big Tech secretly owns half of the world’s subsea internet
> China’s shipbuilding outpaces the U.S. by 232×
> Deep sea mining is already the size of Mongolia
> Underwater drones just dropped from $200k → $10k
> Red Sea attacks have hit 100+ commercial ships

The ocean is the next trillion dollar frontier, and @angelesahr just mapped the opportunity in her latest research deck.

See replies for deck access.

[Sam Pullara @sampullara]

Usenet! https://t.co/ZTxQKdLyEh

[Sean Parker @seanparkerphoto]

Round 2 of Aurora is possible tonight from after sunset to about midnight! Here are some photos from last nights show in @SaguaroNPS West in #tucson #arizona #aurora #northernlights

[Boyan Slat @BoyanSlat]

So far in 2025, @TheOceanCleanup has been collecting an average of 3200 kg of trash for every hour of the year.

[Dr. Jon Slotkin @slotkinjr]

As a neurosurgeon I care a lot about road safety.

By now you’ve probably seen @Waymo’s stunning safety results (like 91% fewer serious crashes). But they didn’t just publish data headlines. They released the raw CSV files and data dictionaries.
I did a much deeper analysis. A fascinating story emerges when you analyze how they’re achieving this.

This isn’t incremental improvement - it’s categorical. We’re looking at the potential elimination of traffic deaths as a leading cause of mortality.

The intersection breakthrough: Waymo has essentially solved intersection crashes, with 95% fewer injury incidents than human drivers in the same locations. That’s transforming the deadliest driving scenario.

The national math: If every US vehicle performed like Waymo, we’d prevent 33,000-39,000 deaths annually and save $0.9-1.25 trillion in societal costs. Even partial adoption at 27% would save ~10,000 lives per year. In terms of magnitude, this would be the equivalent of eliminating every pedestrian death nationally in a year.

The physics signature: Here’s what fascinates me: 47% of Waymo’s contacts involve less than 1 mph delta-V. They’re not just avoiding crashes; they’re converting unavoidable incidents into gentle bumps. It’s like having physics itself on your side.

We’re not talking about marginal safety gains. The data represents a fundamental shift from harm reduction to harm prevention.

The methodology matters: I used their dynamic geographic benchmarks (comparing like-for-like road conditions) and verified the findings hold across San Francisco, Phoenix, LA, and Austin. The safety advantage actually increases in more complex urban environments.

Link to raw data below….

Notes on my approach:

Analysis based on 96 million miles of Waymo Rider-Only (RO) data through June 2025, utilizing Waymo's dynamic geographic benchmarks to compare Waymo Driver performance against human drivers under similar road conditions and operational design domains.

The projections for national impact (deaths prevented, societal costs) involve several assumptions. Given Waymo's zero reported fatalities, the direct serious injury reductions were mapped to national fatality statistics using established NHTSA-derived ratios that correlate serious injury crash rates with fatality rates. This extrapolation assumes that Waymo's observed serious injury prevention capability would translate proportionally to fatality prevention. Societal cost savings are estimated by applying average per-fatality and per-injury economic costs (e.g., medical, lost productivity, quality of life) as published by NHTSA, scaling these national averages to the projected number of avoided fatalities and injuries based on Waymo's safety performance. These figures represent the potential annual impact if the Waymo Driver's safety profile were widely integrated into the national fleet.

@ethanteicher

[Talor @Talor_A]

this is one of the most remarkable technical blog posts I’ve ever read

[Thinkwert @Thinkwert]

Prescient, from Shel Silverstein in 1981

[Curiosity @CuriosityonX]

NEWS🚨: Scientists just captured the first direct image of the cosmic web — the mysterious structure that holds the universe together

[nick kokonas @nickkokonas]

Thoughts on AI (warning: long thread).

I’ve been formulating these ideas for a long time…. not months, decades. But only recently has the acceleration made the immediacy of them relevant to almost everyone. They are also very incomplete. But here goes.