Sibling rivalry

A writer in the Globe and Mail proposes that parents shouldn't mediate their kids' sibling conflicts, instead leaving the kids to work it out themselves.

Here's what I want to know: how exactly does he think the kids are going to work out their conflicts? Because when I was a kid, I didn't have any secret conflict-resolution skills that I was lazily not using - I seriously had no idea whatsoever how to get my sister to leave me alone. In fact, even with my adult interpersonal skills, I still have no idea how I could have gotten her to leave me alone within the limitations placed on me as a kid.

As an example, let's look at the most annoying and pervasive sibling problem I had: my sister would keep opening the door when I was in my room with the door closed. It didn't matter what I was doing, it didn't matter if there was a risk that I was changing clothes, it didn't matter if I had just gone into my room and closed the door specifically to get away from her, she would keep trying to open the door. If I blockaded the door, she'd keep pushing at it trying to get in. Countless hours were wasted pitting my superior mass against her superior strength, trying to get her to leave me the fuck alone so I could have a moment's peace. (This also meant I could never let my guard down even when in my own room with the door closed because I never knew when she'd come by and open the door, so if I wanted real privacy I had to physically barricade the door, which was also difficult because I'm not strong enough to move the larger pieces of furniture single-handedly.

So how would Mr. Wolf have my adolescent self solve this problem?

My adult self can think of a number of approaches. The first thing I'd do if this happened to me today is say "Well, if you aren't going to respect my basic need for privacy, I'll just be going home then." Then I'd go home. But as a kid I didn't have my very own apartment in an access-controlled building, conveniently located in another city. If someone was trying to open the door to my apartment despite my attempts to keep them out, I'd call the police. I think I could even make an argument for calling the police if I had a housemate who was trying to open the door to my bedroom despite my attempts to keep them out. But calling the police because your little sister is bugging you is considered frivolous, and even if it was an option I didn't have a phone line in my room or a cellphone of my own. Another thing I could do as an adult is install some locks on the door to my room, but when I was a kid my parents wouldn't let me do this. I suppose as a last resort, my adult self would go and crash elsewhere, with a friend or at a hotel, but as a kid I couldn't do this either.

But even now, pushing 30, passing as a competent adult in a professional work environment on a daily basis, having even taken conflict resolution training, I still haven't the slightest idea how my adolescent self could have resolved that situation with all the restrictions placed on her, short of going "Moooom, make her leave me alone!" So I'd love to know how exactly Mr. Wolf thinks adolescents are going to resolve their own sibling rivalry.