If we're ever invaded by aliens, I don't know if they would take gold. But almost everyone else will. . . . (Harvard's Ken Rogoff)
caught my attention, having just seen Cowboys and Aliens. The nasty monsters defeated by a coalition of willing cowboys, Native Americans, and men in black hats are gold prospectors (and world destroyers). They would take gold, Professor Rogoff, and the planet, too, thank you.
