For example, to decide whether some institution should be reformed or left alone, we need to know whether it has a positive or negative effect. That requires evaluating counterfactuals about the past, which is surprisingly tricky, as I mentioned sometime ago. That might be a little tangential to the OP, though.
For example, to decide whether some institution should be reformed or left alone, we need to know whether it has a positive or negative effect. That requires evaluating counterfactuals about the past, which is surprisingly tricky, as I mentioned sometime ago. That might be a little tangential to the OP, though.