
Some places are less connected across space than others. North Korea is an extreme example. Robert Guest, author of Borderless Economics, explains: Because North Korea shuts out people, it shuts out ideas. That's one big reason why it is a starving backwater. Its more open cousin, South Korea, which welcomes foreigners and sends hordes of students and businesspeople abroad each year, is 17 times richer. People connect places. Migration is how ideas move. Another cost of isolation: Two recent papers by Filipe Campante of Harvard's Kennedy School and Quoc-Anh Do of the Singapore Management ... Read More










