With Emmanuel Flachaire et Ewen Gallic, we recently uploaded a paper entitled Optimal Transport for Counterfactual Estimation: A Method for Causal Inference on ArXiv. Many problems ask a question that can be formulated as a causal question: “what would have happened if…?” For example, “would the person have had surgery if he or she had been Black?” To address this kind of questions, calculating an average treatment effect (ATE) is often uninformative, because one would like to know how much impact a variable (such … <a href=“https://freakonometrics.hypothese