
Erik Brynjolfsson
@erikbryn
Director @DigEconLab Co-founder, @Workhelix @StanfordHAI @SIEPR @Stanford https://www.amazon.com/Second-Machine-Age-Prosperity-Technologies/dp/0393350649
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.@RepThomasMassie is 100% right here. And his point also applies to skilled immigration more broadly. The US is only 4% of the global population. We should be actively recruiting the best and brightest from around the world to come join our team.

This is a great opportunity. @LindseyRRaymond is an amazing person to work with.
I’m hiring a pre-doc! Come work with me on how AI is changing the labor market and how algorithms impact markets. Non-econ backgrounds welcome. Application details below – excited to collaborate! Start: Summer 2026 Deadline: Nov 1, 2025 forms.gle/oGtsaoVNtHAkba… @predoc_org…
“It's tough to make predictions, especially about the future.” ― Yogi Berra


Half of all US imports are used as inputs by American manufacturers. Here’s what happens when you impose a bunch of taxes on those imports:

U.S. manufacturing shrank this past September for the 7th consecutive month. straitstimes.com/business/econo…
Down under, AI-powered robots are installing solar panels. 2/11 interestingengineering.com/energy/robots-…
Yes, we can have better airports. And it needn’t cost taxpayers anything—users of those airports can and should pay for it. (Deleted and reposted to fix a typo.)
Here's an de-radicalizing thought — airport upgrades are largely financed through the Passenger Facility Charge which was capped by congress in nominal terms at $4.50 per passenger per segment back in 2000. A serious problem, but also very boring and technical.
Every year, the yellow and purple areas get bigger. Solar increased 15% last year. Battery storage increased 50% last year. Within a few years, they'll dominate.
It's astonishing how wide the battery curve has gotten in California. Last Tuesday, batteries consistently supplied more than 20% of demand for 4 hours from 6pm to 10pm. Price signals are working well.

Political tribalism, including the type that is amplified on social media, makes it harder to think straight.
Warning: Political Ideology May Impair Your Ability to Reason “[I]f you’re not careful, ideology won’t just shape your opinions; it’ll hijack your ability to reason altogether.” [Link below.]
![SteveStuWill's tweet image. Warning: Political Ideology May Impair Your Ability to Reason
“[I]f you’re not careful, ideology won’t just shape your opinions; it’ll hijack your ability to reason altogether.”
[Link below.]](https://pbs.twimg.com/media/G2XEtsaaEAAdLCR.jpg)
“In science, it often happens that scientists say: ‘You know that’s a really good argument; my position is mistaken,’ And then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn’t happen as often as it…
Agree with Auke. Fleet operators, unlike consumer car buyers, are very conscious of cost per mile (or ton mile). The electrification of commercial vehicles, including trucking, is starting later, but will go much faster, driven by economics.
As soon as the TCO is lower, electrifying trucks will go very quickly. And that is about now. nature.com/articles/s4433…
Andrej @Karpathy provides an insightful review and extension of the epic discussion between @RichardSSutton and @dwarkesh_sp The Bitter Lesson never tasted so sweet.
Finally had a chance to listen through this pod with Sutton, which was interesting and amusing. As background, Sutton's "The Bitter Lesson" has become a bit of biblical text in frontier LLM circles. Researchers routinely talk about and ask whether this or that approach or idea…
Public policy should be to reduce automotive crashes and fatalities by speeding up the adoptions of self-driving cars.
Waymos are 80% less likely to get into a serious crash than human drivers. An 80% reduction in car crash deaths in the US would mean more lives saved than if you eliminated all homicides. Great piece by @KelseyTuoc theargumentmag.com/p/please-let-t…
The most predictable result of tariffs isn't higher prices; it's more lobbying. And that's just what we got - in unprecedented fashion:

This is truly remarkable. Turn the other cheek indeed.
This morning with our burned down church still smoldering and four saints murdered, members of the Church of Jesus Christ raised $60k for...checks notes...the shooter's wife and children. Most donations are anonymous. Each Christian comment will make you cry more than the last.


"Maximally civilized societies don’t just respect members’ rights; they afford the same rights to all intelligent beings. Maximally barbaric societies, in contrast, see nothing wrong with murdering and robbing outsiders." betonit.ai/p/what-is-barb…
Our "Canaries in the Coal Mine?" seminar is now available! Watch @econ_b and @RuyuChen break down their landmark research on AI's impact on employment: youtu.be/tqYo-dfL1go
youtube.com
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Canaries in the Coal Mine? Six Facts about the Recent Employment...
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