1/ I am retweeting, because the question: "Compare the PO vs. DAG approaches on applied, 'real-life' data" comes up once a week. Here it is: Take any applied paper labeled "PO" and re-label it "DAG" after adding to it three tiny ingredients: (1) Show how the modeling assumptions
2/ emerge organically from our scientific understanding of the problem, (2) Show if there is anything we can do if it doesn't thus emerge, and (3) test whether those assumptions are compatible with the available data. Once added, Bingo! We have an "applied DAG" approach,
3/3 demonstrated on "real life" data, that can be compared to the "applied PO approach" or "applied quasi-experimental approach" on all counts, especially on: (1) transparency, (2) Power, and (3) Testability. #Bookofwhy
