A critique of Ricardo’s theory of international trade from the Developing Economics blog
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, ‘mainstream’ international trade theory. 200 years – and lots of theoretical and empirical criticism later – it’s appropriate to ask, how is this still a thing?
This week we saw lots of praise of Ricardo, by the likes of The Economist, CNN, Forbes and Vox. Mainstream economists today tend to see the rejection of free trade implicit in Trump and Brexit as populist nonsense by people who don’t understand the complicated theory of comparative advantage (“Ricardo’s Difficult Idea”, 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…
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