Global interaction, a perennial phenomenon among human groups, is a function of perceived need. The fact that Columbus’ contact with the New World was an accident does not discount the fact that he was seeking a new trade route to Asia—and avoiding established ones. And, this contact by that dark miracle of fate or chance altered the destiny of men and nations. Similarly, the Silk Road, the greatest land route on earth, traces trade, travel and ideas. Travel and trade, in turn, generate contact with groups beyond one’s particular culture—which, by itself, is a tumultuous journey into the unknown as mysterious, unsettling, and fraught with danger and uncertainty as any physical voyage of discovery. The cost, real or prospective, of innovatio...