The article spends quite a bit of time citing intellectuals who argue against comparative advantage. As you say, all economists agree on free trade, but Krugma

The article spends quite a bit of time citing intellectuals who argue against comparative advantage. As you say, all economists agree on free trade, but Krugman is talking about non-economists. And regarding HN, I would say a majority of comments in a recent article on MarkerBot outsourcing their production to China[0], are implicitly or explicitly against free trade. [0] https://news.ycombinator.com/item?id=11574215 https://news.ycombinator.com/item?id=11574215