Chetty and Opportunity Insights: digital twins can recover causal effects, validated by RCTs
soumitrashukla9 · x · 2026-11-03
A new paper by Raj Chetty and the Opportunity Insights team shows 'digital twins' — rich ML applied to large covariate sets to generate counterfactuals — can recover causal effects, validated against RCTs.
The implication is scalable program evaluation: if observational counterfactuals match RCT accuracy, thousands of programs lacking experimental evidence can be evaluated on administrative data alone. Commenters ask whether the methodology generalizes beyond workforce programs.
Related event: Chetty Team Shows Digital Twins Can Recover Causal Effects of RCTs(2 posts)→
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