“”The most persuasive case against protectionism is not the standard one that undergraduate students are taught in their introductions to international economics, which goes like this: Tariffs distort the allocation of resources and impose a ‘deadweight burden,'” Mokyr wrote in the June 1996 issue of Reason. “The standard argument is certainly correct, but somehow it has failed to persuade many people since it was first enunciated by Adam Smith and David Ricardo.”
The better argument, instead, is that “protectionism and insularism impede innovation, depriving our children of the comfort and security that progress and economic growth bring,” he said. “Free trade and international competition not only lead to a better allocation of resources; they ensure that countries do not lull themselves into the technological lethargy that is the archenemy of economic growth.””