We trust the same people we trust with everything else, judges. The legal system is a nuanced mess and the reason we have judges is while some of it is black an

We trust the same people we trust with everything else, judges. The legal system is a nuanced mess and the reason we have judges is while some of it is black and white some of it is in a sort of gray area. We would give them guidelines and through an analysis of the language of the law and current precedent they would make a ruling. It's not a perfect system but often it's better to have an imperfect system than none at all.