I would agree that is really a display of power, and not a good one. They are learning to manage this kind of situation, for sure: that is, random disruption.

I would agree that is really a display of power, and not a good one. They are learning to manage this kind of situation, for sure: that is, random disruption. I see them learning peculiar time management strategies that they will have to unlearn as adults. I see them learning that their efforts on medium-difficulty tasks are often going to be randomly wasted and are therefore not worth bothering with.