That's shifting the goal post and it suffers from survivor bias. The individual decision is met by few people. The policy is instated by very different people a

That's shifting the goal post and it suffers from survivor bias. The individual decision is met by few people. The policy is instated by very different people and informed by many factors outside the control of psychology, where false positives don't invalidate the whole system if the alternative is a slippery slope with draconic punishments – a paradox because the most severe punishment could amount to manslaughter if not murder.