I read (and liked!) Ha-Joon Chang's book (which was not the first of his I'd read); my only quip is with his physics. In fact, there are a lot of cases in phys

I read (and liked!) Ha-Joon Chang's book (which was not the first of his I'd read); my only quip is with his physics. In fact, there are a lot of cases in physics where we have to do something similar to his recommendation for economics. Quantum physics, relativity, the electron as particle or wave, Newtonian physics, are all different (and mostly contradictory) models for physics. We pick the one that works best for the problem we're working on. We don't use relativity when we're designing bridges, we don't use quantum physics either, but we need to know about them and know when we do need to use them. His recommendation for economics is not so dissimilar.