This post that a friend sent me sums things up perfectly. Whoever the teacher is, thanks. Whoever the 13yo is, now that’s an analogy 

 As a teacher I would like to pass on the following wisdom from an 13year old who I teach-“Is the Prime Minister an idiot? Because even I know that when someone hits your friend with a stick, you don’t hit everyone in the playground with a stick. You take the stick away. And you find out who gave them the stick in the first place. And you find out where he got the stick. And clear up the sticks so nobody else can be tempted. Everyone gets angry. But if they don’t have a stick then their anger isn’t as dangerous.”

I congratulated her on her wisdom.

“Sir. It isn’t wisdom. It’s obvious. If I gave someone a stick to hit someone with id be expelled. And imagine how much trouble id get in if I SOLD them the stick!!”