All observers of our legal system recognize that criminal statutes can be complex and obscure. But statutory obscurity often takes a particular form that most observers have overlooked: uncertainty about the identity of the wrong a statute aims to punish. It is not uncommon for parties to disagree about the identity of the underlying wrong even as they agree on the statute's elements. Hidden in plain sight, these unexamined disagreements underlie or exacerbate an assortment of familiar disputes—about venue, vagueness, and (...) mens rea; about DUI and statutory rape; about hate crimes, child pornography, and counterterrorism laws; about proportionality in punishment; and about the proper ambit of the criminal law. Each of these disputes may hinge on deeper disagreements about the identity of the wrong a statute aims to punish, and these deeper disagreements can be surprisingly hard to resolve, fueled as they are by the complex inner structure of our penal laws and the discretionary mechanisms of their administration. (shrink)