There are good reasons to be initially hesitant about shaping criminal law rules to track the justice judgments of ordinary people. People seem to disagree about many criminal law issues. Their judgments, at least as reflected in many aspects of current law such as three strikes and high penalties for drug offenses, seem harsh to many. Effective crime control would seem to require the expertise of trained experts and scholars who understand the complexities of general deterrence and the identification and incapacitation of the dangerous. But this brief Essay, which reviews some previous studies and analyses, argues that distributing criminal liability and punishment according to the shared judgments of the community—so-called “empirical des...