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Arnaud Dyevre Profile picture
Arnaud Dyevre
@ArnaudDyevre
Post-Doctoral Associate at MIT, Science for Progress Initiative. Incoming Assistant Professor of Economics, HEC Paris (Sept '25) Long-run macro & Public Econ
2 subscribers
Nov 11 • 31 tweets • 8 min read
I just read the paper in full; it is even more spectacular than I initially thought.
A short thread about the results and their significance. This is the first ever paper to provide causal evidence of the impact of AI on scientific discovery. Something that has been the subject of speculation by macroeconomists for years now.
Dec 31, 2022 • 37 tweets • 14 min read
2022 has been a fantastic year for papers about growth/innovation and firm heterogeneity. Here is a short thread summarising the ones I enjoyed reading the most.

In no particular order 🧵👇 1. Chen: “Economic Growth and the Rise of Large Firms”. zhangc-econ.github.io/files/TailGrow…

This is a fascinating paper documenting a new fact about the firm size distribution: its right tail becomes thicker as a country grows i.e. superfirms becomes even more “super” as GDP/cap increases.
May 9, 2022 • 16 tweets • 5 min read
A paper I am really proud of is coming in print! It is joint work with the great @crescenzi_r (LSE) and @FrankNeffke (Harvard Growth Lab).

It asks: What is the impact of foreign investments by firms on innovation in cities? What is the role of firm heterogeneity in this? Short🧵 ImageImage We start from the observation that innovative cities (as measured by patent counts) are a *very* exclusive club

Inequality in patent production is much higher than income inequality across regions (Lorenz curves below)
10 most innovative regions = 45% of patent prod. in 2012 (!) Image
Sep 9, 2020 • 25 tweets • 7 min read
With friends at LSE, I recently had a reading group session in memory of Emmanuel Farhi. I discussed some of his influential papers on production networks with David Baqaee.

I thought I'd summarise this discussion here for people interested in this beautiful line of work 👇 Out of the many papers Baqaee & Farhi wrote, 3 are especially inspirational. They are in yellow below:

Paper 1. lays the foundation of their theory of input-output networks
Paper 2. applies it to inefficient economies (=with markups)