[Jared Greathouse]

You could but this still doesn't answer the question. The question I'm asking you has nothing to do with statistics or regression, I'm asking you conceptually, if the goal is to evaluate some sort of treatment on an outcome, how is this possible without pre-intervention data?

[Taiba Chau]

In this dataset, some firms are treated and some are not. So I'm just interested in seeing if the TWFE would give any statistically significant results.