These usually just result in people picking holes in the dataset/experiment/simulation -- and rightly so; circumstances change too quickly for historical data to be much use, simulations necessarily have some severe assumptions, and small-scale tests don't simulate macroeconomic effects very well.
This is the reason that I've long classified macroeconomics in with religion: they're both very influential ideas, but neither are really based on any evidence.
This is the reason that I've long classified macroeconomics in with religion: they're both very influential ideas, but neither are really based on any evidence.