I can't recall a joke about a President looking for an economist with only one hand. In economic forecasting there are mental models of the type: On the one han

I can't recall a joke about a President looking for an economist with only one hand. In economic forecasting there are mental models of the type: On the one hand, ... On the other hand. Polya how to solve list many ways to develop useful math analogies, but it seems that end result is not very satisfactory. I think that to make an intelligent decision you have to feel deeply involved in the subject, then some kind of unconcious force do wonders, it seems you can benefit learning or focussing in certain patterns, but I think that deep is better than breast. Also there is the theory of the hedgehog versus the fox https://en.wikipedia.org/wiki/The_Hedgehog_and_the_Fox https://en.wikipedia.org/wiki/The_Hedgehog_and_the_Fox