Go West, young man, and grow up with the country. There is nothing for you in the East. The irascible New York newspaper editor Horace Greeley said that around 1833, of course, except that he probably didn’t. It is appropriate that this famous epigraph of America’s romantic nineteenth century seems to have been stitched together after the fact, an imagined quote about the future from an imagined past. It all went to plan, for good and ill. But then we ran out of West. We ran out of Guano