[microwavecamera]

Exactly. If someone else gets wrongly convicted for the crime then the actual perpetrator now has no fear of ever being prosecuted for what they did. The fear of being caught for a past criminal act is a deterrence to committing more criminal acts. Once someone else is convicted for that crime, to the criminal, they've gotten away with it. If a novice gambler wins big early, they're more likely to take bigger risks later. The same is true of criminals.