A recent data analysis competition compared the performance of several methods for causal inference from observational data. However, sound causal inference requires not only adequate data analysis techniques but also subject-matter expertise about the causal structure of the problem under study. Therefore, until a methodology is developed to combine data analysis and subject-matter knowledge, causal inference competitions may only provide advice to practitioners under ideal conditions.
Miguel A. Hernán. "Comment: Spherical Cows in a Vacuum: Data Analysis Competitions for Causal Inference." Statist. Sci. 34 (1) 69 - 71, February 2019. https://doi.org/10.1214/18-STS684