The article spends quite a bit of time citing intellectuals who argue against comparative advantage.  As you say, all <i>economists</i> 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.<p>[0] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11574215" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11574215</a>