I'm not saying you are wrong but I'm saying that an evaluation of someones sanity is the same whether they are stepping in through the door of a locked facility, or stepping out. It's not harder to do after than before - it's just more important to get right. You can call that "harder" but the evaluation is basically the same.

> showing insanity is different from showing sanity. There are true-positives, true-negatives, false-positives, and false-negatives.

Right. And a false positive might send someone to this facility instead of prison while a true negative might let someone out while dangerous.