It is basically impossible to produce real empirical evidence in economics. You can look at data/correlations, and try to reason about cause and effect. But rea

It is basically impossible to produce real empirical evidence in economics. You can look at data/correlations, and try to reason about cause and effect. But real empirical evidence requires you use the scientific method to test hypotheses (ideally done in a double-blind way), which is impossible for economists to do even if we had a national desire to do it, because the test itself would impact reality for its participants too much. It's similar to the "observer effect" in physics, but on a massive scale. At best, I think you can create mathematical simulations built on certain assumptions about reality. Those simulations depend on how well the assumptions model reality, and very easy to miss an important detail.