Punishment is the imposition of a penalty in response to an offense, and it takes many forms. “An eye for an eye” is one of the strongest human instincts—and one that can be difficult for both individuals and societies to overcome—but decades of evidence show that reciprocating harm is not always the best course of action, either for the offender or the offended. Punishment, when meted out fairly, can work to condition people not to repeat misdeeds, and threats of negative repercussio...
