Why comparative advantage is a problematic guide to practical policy

Previous criticisms of comparative advantage theory have mainly stressed the inapplicability of its theoretical assumptions. This article focuses on the dilemma involved in using it as a guide to practical policy. Since its inception, comparative advantage theory has gradually split into two schools, representing two ways of thinking and two methodologies. Economic policy based on comparative advantage may succeed in the short run but fail in the long run, because the development model based on this approach has an inherent destructive mechanism.