In 2043, criminal law will adhere to the principle of legality, forcing clarification of imprecise criminal code provisions and eradicating the use of broad sentencing discretion. Second, in 2043 criminal law will have moved toward greater support for the principle of culpability. There will be demands for refinements in doctrines designed to assess blameworthiness. Third, the criminal law will be subjected to increased systematic and rational analysis, a legacy of the rationality that created and organized the Model Penal Code. These three developments will have more influence on the development of criminal law in 2043 than will random and collateral social and political forces. 47 footnotes.