Criminologist: A judicial system that tries and punishes criminals without delay is an effective deterrent to violent crime. Long, drawn-out trials and successful legal maneuvering may add to criminals' feelings of invulnerability. But if potential violent criminals know that being caught means prompt punishment, they will hesitate to break the law. Which one of the following, if true, would most seriously weaken the criminologist's argument? ['It is in the nature of violent crime that it is not premeditated.', 'Everyone accused of a crime has the right to a trial.', 'About one-fourth of all suspects first arrested for a crime are actually innocent.', 'Many violent crimes are committed by first- time offenders.']