External effects such as air pollution are often cited as an example of a problem that can be usefully addressed by public policy. In the real world, however, two factors cause externalities to be overemphasized as a justification for regulation:
Scott Sumner is an Evening Weekend Meteorologist with a focus on weather forecasting and analysis. He writes articles for various publications, including Econlib, RealClearMarkets, and DC News Now, covering topics related to economics, forecasting errors, inflation, recession, and decision-making. His work has also been featured in Independent Institute, Central Banking, Seeking Alpha, and TalkMarkets.