• Important to note that the numbers flow downwards in the funnel, not upwards. In other words, a number is constrained to a maximum value of the number above it, so changing a number has impacts downwards, but not necessarily upwards. A top‐down effect flow.
• One problem with arresting much of the low‐hanging fruit of the criminal world has been the creation of a criminal elite who have avoided capture.
a. Estimating prevention benefits
• Impacts higher up the crime funnel will have greater benefits throughout the whole criminal justice system.
• Any reduction is actual crime will reduce reported crime, provide more opportunity to concentrate on prolific offenders, and allow the criminal justice system to concentrate on the most serious offenders.