This paper examines what would happen in the New York’s criminal justice system if two primary changes were made. Those changes are an exogenous doubling of the number of new criminals entering the system (new people becoming criminals) and a doubling of the productivity of police officers. These inputs were selected because they represent changes on the front or upstream end of the criminal justice system, and the effects of these changes on the whole system could be observed. Changes in police capacity, number of people in prison and the total number of active criminals are examined to understand the implications that technological improvements that increase police productivity may have on other parts of the criminal justice system.