Two government economists were returning home from a field meeting. As with all government
travelers, they were assigned the cheapest seats on the plane so they each were occupying
the center seat on opposite sides of the aisle.
They continued their discussion of the knotty problem that had been the subject of their
meeting through takeoff and meal service until finally one of the passengers in an aisle
seat offered to trade places so they could talk and he could sleep.
After switching seats, one economist remarked to the other that it was the first time an
economic discussion ever kept anyone awake.