Are humans born to cheat? What do Americans think about marital infidelity? Those who oppose the practice of adultery often base their arguments on religious prohibitions. Others, confident that religion is worthless, or worse, turn to science to support their contentions that monogamy is not biologically “natural.” The ABC News television program Nightline is currently running a series on the Ten Commandments that “explores the biblical commandments from [a] modern-day perspective.”[1] The fourth installment of the series looked at...