So, forcing people to constantly modify their behavior wears out their willpower and causes measurable deficiencies in their mental abilities. You can expect a 10-30% decrease in mental skills if you wear people out by forcing them to waste their willpower on maintaining arbitrary social norms.
.... how do we design schools? What do we constantly do to children all day? Then we demand that they work at their peak mental efficiency (which is impossible because we've worn out their mental focus on things like not talking, standing in line, doing what they are told, sitting quietly, doing what they're told...); it's weakening the teachers, it's also damaging students.
We've essentially created an education system designed to produce poor mental acuity. I've always said that teachers dissolve their in-class credibility with students if they are used as hall monitors and cafeteria ladies (they are in my school). It turns out that having to constantly sit on every little social deviance measurably weakens our ability to perform mental tasks in both teachers and students as well.
If you have a moment, give it a listen (there is a pod cast on that webpage), some great insights into how modern psychology is measuring willpower and its effects on mental ability, and how we’re completely ignoring them in education.