Criminologist: A judicial system that tries and punishes criminals without delay is an effective deterrent to violent crime.
Evidence
Long, drawn-out trials and successful legal maneuvering may add to criminals' feelings of invulnerability.
If potential violent criminals KP → H know that being caught means prompt punishment, they will hesitate to break the law.
Conclusion
A judicial system that tries H and punishes criminals without delay is an effective deterrent to violent crime (i.e., criminals will hesitate).
Evaluate
The argument assumes KP that violent criminals know that being caught means prompt punishment.