No one finds Rob Kaplan in the office on a Friday.
Following four days of day-long mediations, the neutral holes up at the end of the week in his 19-foot-long Airstream, an aluminum trailer whose streamlined form recalls the shape of 1940s-era aircraft.
Addressing a neatly organized desk and donning a headset that makes him look something like an air-traffic controller, Kaplan devotes Fr... (continued)