Justin Sandefur
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justsand.bsky.social
Justin Sandefur
@justsand.bsky.social
Development economist, worrying about economic growth these days. https://www.openphilanthropy.org/about/team/justin-sandefur/
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January 5, 2026 at 11:56 PM
congrats -- that was a long journey! Happy ending
January 5, 2026 at 9:58 PM
2. Aid for economic growth is tantalizing but much harder. The new enthusiasm for redirecting billions in aid to subsidize private enterprise is way ahead of the evidence.
www.chat-gdp.org/development-...
Washington's new model of foreign aid for economic growth
Everybody makes money, but nobody actually makes anything.
www.chat-gdp.org
January 4, 2026 at 2:28 PM
Preview of my take:

1. Health aid saves millions of lives. There's still low-hanging fruit; it could save millions more.
www.cgdev.org/blog/malaria...
Malaria Vaccines: Turning a Scientific Triumph into Millions of Lives Saved
After decades of research and development, two new malaria vaccines entered routine administration this year. This is a huge win for science, and potentially for humanity. Gavi, the Vaccine Alliance, ...
www.cgdev.org
January 4, 2026 at 2:27 PM
While it's possible both are right -- the strikes were tactically incompetent, but strategically wise -- that seems to assume this miss (if indeed it was a miss) was an aberration. And we won't just be bungling along, blowing things up in a region we don't understand. TBD.
December 28, 2025 at 12:21 PM
We end with some 'big think' speculation about deeper causes: the end of hyperglobalization, and the broader retreat from liberalism.

Will leave that florid prose to the full post, link below.

5/5
www.chat-gdp.org/we-were-wro...
December 12, 2025 at 3:09 PM
This poses a bit of a puzzle: if 70% of LMICs are catching up, why no convergence? The answer is basically about magnitudes: the growth boom in low- and esp middle-income countries has collapsed -- reflected in the end of global poverty reduction that others have documented.

4/
December 12, 2025 at 3:09 PM
One slightly more optimistic lens on this (2nd) reversal: if instead of a standard Solow-convergence metric, we look at the % of LMICs who are growing faster than the G7, that number remains high, around 70%. But it's also falling fast.

3/
December 12, 2025 at 3:09 PM
To be precise, it's not so much that we were wrong, as that facts have changed. We're not the first to notice: see links in post to Soumaya Keynes, Olaberria & Reinhardt, and Jonathan Hartley. But having hyped the rise of convergence, we felt we should reflect on its fall.

2/
December 12, 2025 at 3:09 PM
Washington's new model of aid for growth has upsides if it can incubate new productive sectors. There's nothing wrong with development finance helping investors make money. But it also needs to help poor countries make stuff.

/end
December 2, 2025 at 1:30 PM
The history of successful industrial policy, e.g., in East Asia, involved leaning against market pressure to invest in finance and real estate, and instead directing scarce subsidies to sectors deemed strategic for growth. In short, export discipline.

10/
December 2, 2025 at 1:30 PM
Why the turn away from industrialization?

One factor seems to be that development finance institutions like the World Bank's IFC are profit driven, and investing in Togolese factories is just less profitable than investing in Turkish banks.

9/
December 2, 2025 at 1:30 PM
Applying those sector characteristics to the industry composition of World Bank's private sector investments over time -- which is a bit of a leap, but is the best I can do with the data at hand -- what you see is basically a declining focus on jobs, exports, and growth.

8/
December 2, 2025 at 1:30 PM
There's a reason economists obsess over manufacturing. It's been the engine of most big economic 'miracles' in modern history: exportable, labor intensive, and fast growing.

7/
December 2, 2025 at 1:30 PM
There are counter examples -- I discuss a new garment factory in Togo that the World Bank helped finance (see 1st pic). But the modal project is a loan to a bank in Mexico or Turkey, ostensibly to expand credit in the economy -- a strategy with a limited evidentiary base.

6/
December 2, 2025 at 1:29 PM