I have been thinking about tariffs recently. No reason why, just interested. And while reading, I came across a series of interesting papers by economists Michael Clemens and Jeffrey Williamson. They explore what looks like an economic paradox. Up until World War I, the countries of Latin America were the most protectionist in the world, with some of its highest tariff rates. East Asia on the other hand - for reasons we will discuss later - had tariffs just a fraction as high. Yet during these decades, the Latin American countries grew faster than the Asian ones. Before World War I, one might argue that if you wanted faster economic growth, you needed high tariffs. Then things changed. In this video, high tariffs in Latin America. Low tariffs in Asia. One works the other doesn't, right? Time, context, and composition matter.