Within the United States, legal challenges to the death penalty have held it to be a “cruel and unusual” punishment (contrary to the Eighth Amendment) or arbitrarily and unfairly enacted (contrary to the Fifth and Fourteenth Amendments). The Eighth Amendment requires that punishments not be disproportionate or purposeless. In recent rulings, the U.S. Supreme Court has adopted a piecemeal approach to this matter. In regard to particular classes of defendant, the Court has sought to rule on whether death is likely to be a proportional and purposeful punishment, as well as whether—given the condition of these defendants—such a determination can be reliably and accurately gauged. This article will suggest a different approach. Instead of asking...