Government regulators would do well to follow simple heuristics like that. Writing good regulations-- good in the sense of promoting the public interest--always presents challenges. Regulators must hit a small but important target where private conduct is brought within appropriate government control, but unnecessary compliance burdens and other deadweight costs are minimized. Even if they see the government\u27s objectives clearly, regulators often have only a limited understanding of the underlying private activities. Moreover, regulators may be unaware of how their rules disrupt or distort those activities in socially harmful ways. Regulators occasionally hit the target exactly. More often, they miss--though not by an intolerably wide m...