Who’s the World’s Fastest Runner?
Justin Wolfers’s excellent post on Usain Bolt‘s extraordinary 200-meter race mentions in passing that “it is only a fairly recent phenomenon that the 200-meter typically yields a faster average speed than the 100-meter sprint.” We’re living in a topsy-turvy world where the world-record pace is faster on a longer distance than a shorter distance. When Bolt set a new world . . .