Think of all the Twilight Zones, Star Treks, adventure novels, bad movies, and even worse liberal social science that follows a storyline something like this: Intrepid explorer/investigator/adventurer stumbles on seemingly peace-loving society where the beaches are warm, you can drink rum out of conch shells all day long, and the sultry women giggle enthusiastically at the idea of proving with gusto that Western notions of chastity and monogamy are culturally rooted and deeply subjective. We're told the local natives don't have words for such concepts as "hatred," "theft," or "envy." Spock, Margaret Mead, Fletcher Christian — whoever — insist that...