What would life be like without exchange or trade? Recently, a man decided to make a sandwich from scratch. He grew the vegetables, gathered salt from seawater, milked a cow, turned the milk into cheese, pickled a cucumber in a jar, ground his own flour from wheat to make the bread, collected his own honey, and personally killed a chicken for its meat. This month, he published the results of his endeavor in an enlightening video: making a sandwich entirely by himself cost him 6 months of his life and set him back $1,500.
(It should be noted that he used air transportation to get to the ocean to gather salt. If he had taken it upon himself to learn to build and fly a plane, then his endeavor would have proved impossible).
The inefficiency of making even something as humble as a sandwich by oneself, without the benefits of market exchange, is simply mind-boggling. There was a time when everyone grew their own food and made their own clothes. It was a time of unimaginable poverty and labor without rest.
The greater the number of people involved in exchange, the more beneficial the process becomes. This morning, thanks to international trade, I am drinking coffee grown in Latin America, viewing a computer screen with eyeglasses made in Europe, and typing this blog post on a keyboard made in Asia. Fortunately, freedom to trade internationally has improved, on average, around the world. Increased trade has helped raise living standards and decrease global poverty.