2026-04-25 03:31:53
Relatively flat US output growth versus rising numbers of US researchers is often interpreted as evidence that ideas are getting harder to find. We build a new 45-year panel tracking the universe of US firms’ patenting to investigate the micro underpinnings of this claim, separately examining the relationships between research inputs and ideas (patents) versus ideas and growth. We find that average patents per R&D input are increasing, the elasticity of patents to R&D inputs is flat or rising, and there is no systematic evidence of a secular decline in patenting after controlling for research inputs. We then document a positive, significant, and fairly steady relationship between firms’ growth in ideas (patents) and labor productivity. Average firm growth after controlling for idea growth, however, declines. Together, these results suggest that innovative efforts play a key role in sustaining growth that has not diminished over the last four decades.
Here is the paper by Teresa C. Fort, Nathan Goldschlag, Jack Liang, Peter K. Schott, and Nikolas Zolas.
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2026-04-25 00:17:29
1. Luis Garicano on the task is not the job. And jobs and the Jevons paradox.
2. The lived experience of aphantasia.
3. Shruti on delimitation in India.
5. Leibniz on symbolic computation, from the unpublished papers.
6. A History of Christian Political Economy, by Ballor and Matson.
7. Michael Tilson Thomas, RIP (NYT).
The post Friday assorted links appeared first on Marginal REVOLUTION.
2026-04-24 16:52:17
An FT poll of 4,000 workers in the US and UK shows adoption is heavily skewed towards the best-paid workers: more than 60 per cent use AI daily, compared with just 16 per cent of the lower earners.
Link here. Note also that the youngest workers are not those who use AI the most, rather it is workers in their 30s. Men in the workplace are using AI more than women are. A very good piece by Madhumita Murgia and John Burn-Murdoch.
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2026-04-24 15:25:08
Yes, I will be doing a Conversation with him. Excerpted (and edited) from a bio:
He is on the business faculty at Catholic University and has a background on both Wall Street and in the startup world, where he founded several companies. His first book, Wanting (2021), has been translated into 20+ languages and is selling more than copies than ever five years in. He is an expert on Rene Girard. His new book, The One and the Ninety-Nine, is out from St. Martin’s June 16 — a theory of how identity gets formed or deformed under conditions of technological social contagion. He has a third book with a major publisher (on “technology as soulcraft”) in the pipeline with a major publisher. He also lived in Italy and for a while was studying to be a priest. He remains a true Catholic, and is the founder and director of the Cluny Institute.
Here is Luke on Twitter. Here is Luke’s home page. So what should I ask him?
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2026-04-24 12:58:32
1. Mason Currey, Making Art and Making a Living: Adventures in Funding a Creative Life. The best overall book I know on the different methods top artists have used to keep themselves going financially. It is perhaps more anecdotal and less theoretical than I would prefer, still a nice work.
2. Mangol Bayat, Mysticism and Dissent: Socioreligious Dissent in Qajar Iran. A very good, clear, and useful book on different dissident religiouis developments in Iran, leading up to the Bahai faith. Recommended, one of the best books I have found for grappling with the history of current Iran.
3. Lena Dunham, Famesick: A Memoir. Not exactly my thing, so I did not finish it. But it is pretty good, so if you are tempted give it a try.
4. Iain Pears, Parallel Lives: A Love Story from a Lost Continent. A delightful story/indirect memoir, telling the tale of the lives and marriage of Francis Haskell, the British art historian, and Larissa Salmina Haskell, a Russian woman who survived the siege of Leningrad as a girl. Pears had the full cooperation of Larissa, at an age where she doesn’t give a damn any more. This story truly comes to life, and that is helped by Pears’s background as a writer of very good fiction.
5. Lázár, by Nelio Biedermann. An excellent novel of ideas, in the style of earlier Continental literature, by a 23-year-old Swiss phenom. It is very good in German, I have not sampled the translation.
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2026-04-24 01:58:57
While northern professions in 1600 did not require lengthy training in mathematics or science, there was popular interest in these topics. England’s first chair in mathematics was endowed by Thomas Gresham,61 who had founded London’s Royal Exchange and pledged the rents from that institution to fund seven professorships, who would not train student but would rather give two public lectures (in Latin and English) each week. As Gresham also gave chairs in astronomy and “physik,” this produced a cluster of scientifically minded individuals, who would later play an outsized role in the founding of the Royal Society. Robert Hooke was the Gresham Professor of Geometry, William Petty the Gresham Professor of Music, and Christopher Wren the Gresham Professor of Astronomy.
Perhaps because of Gresham’s public lectures, interest in mathematics grew. More professorships followed, including the mid-17th century Lucasian Chair in Mathematics (after William Lucas, member of parliament for Cambridge), for which Isaac Newton would be the second occupant (Clark, 1904). The popular interest in science also meant that teachers at urban universities could fill public lecture halls by teaching about chemistry, and even performing public chemistry experiments.
That is from a new NBER working paper by David M. Cutler and Edward L. Glaeser, “How Have Universities Survived for Nearly a Millennium?” Has any single individual funded three equally prestigious chairs or anything close to that?
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