There is a non-trivial proportion of humanity that simply cannot change their mind, cannot admit when they are wrong. If you think long enough about it and follow a rule-based mindset absent objective feedback (as fields such as law allow), you can justify almost any action taken ad-infinitum, as long as you follow a rule book and pattern you have practiced for years. That said, mentally inagile, cognitive calcified people should be culled from our justice system ruthlessly. We need people who can think through proportion, harm, and justice on a dynamic basis.