https://www.chartercitiesinstitute.org/post/case-for-charter-cities-effective-altruism (archived announcement, archived report)
Excerpt:
A substantial theoretical and empirical economic literature argues that institutions are the primary determinant of long-run economic outcomes. The paper offers a brief introduction to the institutions literature and presents two case studies focusing on sets of major institutional reforms that pulled billions out of extreme poverty: India and China. We discuss the potential areas for reform in a charter city and the widespread success of special economic zones and other projects like charter cities.
Finally, we make an initial effort at quantifying the cost-effectiveness of charter cities. Although the model is relatively simplistic, it allows for direct comparison between GiveWell’s top charities and the Charter Cities Institute. Our modeling suggests that a single charter city could be as effective as Deworm the World, GiveWell’s top charity, within 50 years. Under a set of optimistic but not unreasonable assumptions, a charter city could be over 40 times as effective as Deworm the World.
Yeah, I'm not expecting RCTs. I just think that some attempt at causal inference would be great (e.g. instrumental variable, difference in differences). I also don't think this is a purely procedural complaint (i.e. not just a rote repetition of "Correlation isn't causation!")--I think there are real risks around confounding and external validity.
I'm also fully onboard for the claim that institutions matter. For me, the uncertainty comes in when we ask "Can this intervention change the right institutions with the right direction and magnitude?".
(Also, I don't think it'll be that productive to talk about without bringing more serious evidence to bear but even 0 doesn't strike me as "very pessimistic". There have been plenty of well-intentioned policies with a net negative effect.)