MEGAN MCARDLE ON GDP DISTRIBUTION: “When you see the map, it becomes radically apparent just how firmly Britain was the root of the Industrial revolution. With the lone exception of Japan, the darkest places on the map are either next to Britain, or former British colonies. And aside from Saudi Arabia and Chile, all the growth seems to spread outward from those Anglosphere points of infection. Nowhere, not even Saudi Arabia, has the income density of Western Europe and North America.”