"It's funny how much one learns from context. Throughout that entire visit to Kenya, with all its meetings, there was an experience of the place that taught me things I couldn't learn by reading global newswires. The fact that I learned so much makes me wish that I could visit more places. So many of the zones, of course, are closed, so one knows about them only in secondhand ways. My research has only scratched the surface. There are thousands of zones around the world. There's just so much work to do."