By now, more than a month since its release, Mel Gibson's Passion of the Christ has elicited countless reactions from Catholics, Jews and fundamentalist Christians. Millions of viewers have so far contributed to the movie's nearly $300 million in gross earnings. Film critics and cultural commentators have weighed in on it in large numbers. Scientifically flavored responses, however, have been relatively sparse. Here's mine. Even about modern day mega-stories we're often clueless. Forty years ago in the full glare of the modern media, John F. Kennedy was assassinated, and we have only a hazy idea of the motivation of the...