> Serious answer: you can't properly test anything in macro-economics. Just think about it, we can't implement rigorous (randomized controlled) experiments and

> Serious answer: you can't properly test anything in macro-economics. Just think about it, we can't implement rigorous (randomized controlled) experiments and we can never observe the counterfactuals. Some places can raise taxes and others can lower them, and we can see what happens: * https://en.wikipedia.org/wiki/Kansas_experiment https://en.wikipedia.org/wiki/Kansas_experiment