Economists argue that trade is good, essential in fact to growing an economy. If you excel at growing tomatoes, and I carrots, we will each have a healthier and more plentiful diet by bartering carrots for tomatoes. Once you add in far more people (across the globe no less), more goods (beef, cars, iPhones), services, and a monetary system that converts the value of any item to a price, gains in our simple local barter example grow exponentially. The world benefits when people trade, exporting what they are uniquely good at and importing what others are more efficient at making. We end up with more goods and services at a lower price when trade crosses city, state, regions and national boundaries. But what is true in theory is not always true in fact. The theory of trade assumed scarcity of labor in developed…