200 Years of the Theory of Comparative Advantage

This is the best tl;dr I could make, original reduced by 82%. (I'm a bot)

Ricardo's theory of comparative advantage is a richer idea - that both parties can benefit from trade even if one party is better than the other at producing everything.

Krugman also makes the broader point that the theory of comparative advantage is not so obvious, and to explain it to the lay person as well as other economists, assumptions that economists must be unpacked.

Even among academic economists Ricardian comparative advantage has made a comeback.

One of Donaldson's contributions listed in the AEA announcement is his "Original work providing empirical evidence on the theory of comparative advantage." The AEA said Donaldson, brings "Careful data work and credible identification combined with state-of-the-art structural methods" in his work testing the theory of comparative advantage.

In his 2012 paper Ricardo's Theory of Comparative Advantage: Old Idea, New Evidence, they first establish how total output of various crops should vary across countries as a function of endowment of fields and the allocation of fields across different crops and then combine these theoretical predictions with productivity and price data from the Food and Agriculture Organization.

They argue that export goods featuring weaker comparative advantage should be taxed less relative to those featuring stronger comparative advantage.

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