Is industrial policy like vitamin C or penicillin?
CAMBRIDGE — Vitamin C may not be particularly effective at preventing the common cold or treating cancer (notwithstanding Linus Pauling’s claims to the contrary), but a lack of it can cause scurvy. As a result, daily consumption is essential to a healthy diet. In contrast, penicillin cures bacterial infections, although its overuse can lead to drug-resistant germs. It should