One of the great sacrifices of subjecting kids to school is that it trains them to ask for permission for everything, from turning in work late, to changing to a different class, to more mundane things like going to the bathroom. It's a tradeoff, of course: condition kids to seek permission for everything, and by doing so enable a system to exist where they receive an education.
Maybe that's a worthwhile tradeoff, and maybe it's not. But the real harm in it, in my opinion anyway, is that when we leave school, we're still in the habit of asking permission for everything. That's dangerous.
A manifestation of this that I come across with frequently is the questions that people send me by email. Here's a paraphrased template, which covers a good 60%+ of the emails I get from strangers:
Last week I was sitting in bed, wrapping my brain around a programming problem presented by my newest project. With no warning, someone started pounding on the wall of my RV. No identification, no verbal communication. Just banging on the wall. Within a few seconds someone else started banging on the other side.
Would you open the door? I didn't. I shut my laptop and stayed as quiet as I could. I have light blocking curtains, but I could see that flashlight beams were reaching for the edges of them.
Then I heard someone try to open my driver's side door. It's locked. Then the passenger side. Also locked. I wondered if I remembered to lock the RV door. It gets tried, too, and the intruder can't get in.