In spite of wars and tourism and pictures by satellite, the world is just the same size it ever was. It is awesome to think how much of it I will never see. It is not a trick to go round these days, you can pay a lot of money and fly round it nonstop in less than forty-eight hours, but to know it, to smell it and feel it between your toes you have to crawl. There is no other way. Not flying, not floating. You have to stay on the ground and swallow the bugs as you go. Then the world is immense. The best you can do is to trace your long, infinitesimally thin line through the dust and extrapolate.