What would the criminal law look like if we took retributivist principles very seriously? In their book, Crime and Culpability: A Theory of Criminal Law, the authors - Larry Alexander and Kimberly Kessler Ferzan, with contributions by Stephen J. Morse - provide a controversial set of answers. Whether a criminal act does ordoes not result in harm should not affect the actor’s punishment. Only the last act of risk creation should suffice for liability. Conscious awareness of risk should always be necessary. And all of criminal law, each and every category of mens rea and actus reus, should be reduced to a single idea: “Do not be reckless; do not knowingly take risks that are clearly unjustifiable in light of your reasons for taking those risk...