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'India was the epicentre of the ancient world.' William Dalrymple sat down with @ayocaesar to talk about the origins of algebra, Indian gems in Anglo-Saxon Britain and why Genghis Khan was scared of India. Watch the full Downstream episode: novaramedia.com/2024/09/30/ind…

Degrowthers hate this one weird trick (innovation)

In The New Yorker Humor, from 2016: “It is with deep sorrow that we announce the passing of Bess Kalb. The cause of death was botulism from a homemade strawberry-rhubarb jam that was prepared by one of her housemates.” nyer.cm/2Czuh6J

🚨 What happens when the gov't cuts prices on medical technologies? New research (w/ Yunan Ji) finds a 61% price cut led to: 75% drop in innovation (may fully offset savings) 49% fewer new firms 28% more production moved overseas 3x repair/replacement rate 🧵(1/n)

Thanks for the shout out, Matt Marx! We plan to release this data publicly next year. Please reach out if you’re interested in learning more.

25. How Patient is Venture Capital? Link: tinyurl.com/narain-jmp

based on a conversation with Paul Novosad: a philanthropic fund I would really like to exist is one that focuses on improved administrative data. (You can't improve state capacity without understanding the state of the world!) Does this exist anywhere?

The job market is behind me, and my great time at Harvard is soon coming to an end. I’m excited to move to New York, where I will join Goldman Sachs as a US economist in the summer of 2025!

To reduce my bilateral trade deficit with Trader Joe's, I am now going to shop at Whole Foods, which is more expensive and a bit further way. Thanks all for your advice.

Delighted to see my former student Natasha Sarin's tremendously important work recognized in the The Washington Post's new Post Next 50 list. Natasha is making public policy better. wapo.st/NatashaSarin

imagine you’re having a great time. what’s the first detail that comes to mind?

I completely missed that Republicans introduced a bill to increase the endowment tax from 1.4% to 21%. If passed, Harvard would go from paying ~$35m to $525m/yr in federal taxes (that’s 8.2% of its current operating expenses)

I am excited to join the Boston University Questrom School of Business as an AP this fall! Grateful to stay in Boston, thrilled about working with the wonderful people in the Strategy and Innovation group, and eager to continue working on the important open Qs in Matt's thread

I find the word ``abundance'' to be an incredible clarion call. The economics of innovation and economic growth has always been about this generally (which is what attracted me to study it), but somehow this phrase helps orient my thoughts much better.

In 2004, it took the world a year to add one gigawatt of solar power — now it takes a day.

"Floods", by Dev Patel, is one of the more astounding Big Data econ papers I have ever seen. Machine learning can be used on satellite data to essentially do magic. How damaging are floods? How much do they affect human capital attainment? A thread on the paper 1/

I was quoted in the WaPo saying that a new NBER WP by Jon Hartley , Kevin Hassett, and Joshua Rauh incorrectly concludes that they find a user cost elasticity "larger than prior estimates." This thread explains. washingtonpost.com/business/2025/…

Wow, this team of people continues to be amazingly innovative in reorganizing and identifying innovation research!