On Saturday, April 19th 1817, David Ricardo published The Principles of Political Economy and Taxation, where he laid out the idea of comparative advantage, which since has become the foundation of neoclassical, 鈥榤ainstream鈥 international trade theory. 200 years 鈥 and lots of theoretical and empirical criticism later 鈥 it鈥檚 appropriate to ask, how is this still a thing?[1]
This week we saw lots of praise of Ricardo, by the likes of , , and . Mainstream economists today tend to see the rejection of free trade implicit in Trump and Brexit as populist nonsense by people who don鈥檛 understand the complicated theory of comparative advantage (鈥溾, as Paul Krugman once called it in his explanation of why non-economists seem to not understand comparative advantage). However, there are fundamental problems with the assumptions embedded in Ricardo’s theory and there’s little evidence, if any, to back up the Ricardian claim that free trade leads to balanced trade. On this bicentenary, I therefore think it鈥檚 timely to聽revisit some of the fundamental assumptions behind Ricardo鈥檚 theory of comparative advantage, that should have led us to consider alternative trade theories a long time ago. Read More »