Let's say you live in Chicago. And I tell you that you can not buy anything from anyone who didn't go to your high school. What kind of life do you think you'd have, compared to the one you have now? What about if you could just buy things from Chicagoans, or better yet, people who live in Illinois? What kind of life would you have now? But wouldn't you prefer to be able to buy things from all over the world? [...]