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How We Stay Good
Merely being equipped with moral programming does not mean we practice moral behavior. Something still has to boot up that software and configure it properly, and that something is the community. Hauser believes that all of us carry what he calls a sense of moral grammar—the ethical equivalent of the basic grasp of speech that most linguists believe is with us from birth. But just as syntax is nothing until words are built upon it, so too is a sense of right and wrong useless until someone teaches you how to apply it.
It's the people around us who do that teaching—often quite well. Once again, however, humans aren't the ones who dreamed up such a mentoring system. At the Arnhem Zoo in the Netherlands, de Waal was struck by how vigorously apes enforced group norms one evening when the zookeepers were calling their chimpanzees in for dinner. The keepers' rule at Arnhem was that no chimps would eat until the entire community was present, but two adolescents grew willful, staying outside the building. The hours it took to coax them inside caused the mood in the hungry colony to turn surly. That night the keepers put the delinquents to bed in a separate area—a sort of protective custody to shield them from reprisals. But the next day the adolescents were on their own, and the troop made its feelings plain, administering a sound beating. The chastened chimps were the first to come in that evening. Animals have what de Waal calls "oughts"—rules that the group must follow—and the community enforces them.
Human communities impose their own oughts, but they can vary radically from culture to culture. Take the phenomenon of Good Samaritan laws that require passersby to assist someone in peril. Our species has a very conflicted sense of when we ought to help someone else and when we ought not, and the general rule is, Help those close to home and ignore those far away. That's in part because the plight of a person you can see will always feel more real than the problems of someone whose suffering is merely described to you. But part of it is also rooted in you from a time when the welfare of your tribe was essential for your survival but the welfare of an opposing tribe was not—and might even be a threat.
In the 21st century, we retain a powerful remnant of that primal dichotomy, which is what impels us to step in and help a mugging victim—or, in the astonishing case of Wesley Autrey, New York City's so-called Subway Samaritan, jump onto the tracks in front of an oncoming train to rescue a sick stranger—but allows us to decline to send a small contribution to help the people of Darfur. "The idea that you can save the life of a stranger on the other side of the world by making a modest material sacrifice is not the kind of situation our social brains are prepared for," says Greene.
Throughout most of the world, you're still not required to aid a stranger, but in France and elsewhere, laws now make it a crime for passersby not to provide at least the up-close-and-personal aid we're good at giving. In most of the U.S., we make a distinction between an action and an omission to act. Says Hauser: "In France they've done away with that difference."
But you don't need a state to create a moral code. The group does it too. One of the most powerful tools for enforcing group morals is the practice of shunning. If membership in a tribe is the way you ensure yourself food, family and protection from predators, being blackballed can be a terrifying thing. Religious believers as diverse as Roman Catholics, Mennonites and Jehovah's Witnesses have practiced their own forms of shunning—though the banishments may go by names like excommunication or disfellowshipping. Clubs, social groups and fraternities expel undesirable members, and the U.S. military retains the threat of discharge as a disciplinary tool, even grading the punishment as "other than honorable" or "dishonorable," darkening the mark a former service person must carry for life.
Sometimes shunning emerges spontaneously when a society of millions recoils at a single member's acts. O.J. Simpson's 1995 acquittal may have outraged people, but it did make the morality tale surrounding him much richer, as the culture as a whole turned its back on him, denying him work, expelling him from his country club, refusing him service in a restaurant. In November his erstwhile publisher, who was fired in the wake of her and Simpson's disastrous attempt to publish a book about the killings, sued her ex-employer, alleging that she had been "shunned" and "humiliated." That, her former bosses might well respond, was precisely the point.
"Human beings were small, defenseless and vulnerable to predators," says Barbara J. King, biological anthropologist at the College of William and Mary and author of Evolving God. "Avoiding banishment would be important to us."