And you can worry about someone falling down the stairs and breaking their neck, or catching some disease from open wounds, or the bully is unstable and decides to go on a killing spree.

There comes a point where you have to stop picking out unlikely scenarios and using them as a wet blanket.

Hmm. All I'm saying is that when encouraging violent reactions to things you should do so carefully and explain the difference.

But I'd also explain why you shouldn't play on tall staircases or leave serious wounds untreated. Maybe I'd make a terrible parent?

African villages have deep pits for various purposes. Kids wander about the village all day long and don't fall in. They don't even need to be told not to fall in.

A sheltered child never learns how to take care of himself in the real, hostile world.

Are you suggesting that it's better to not educate a child because in Africa kids just know not to fall into holes?

Education isn't "sheltering".

Proper education allows children to avoid or resolve hostility without resorting to violence. Not in all situations, but like you said, the other situations are "unlikely scenarios" and peaceful resolution should be preferred otherwise.

In most societies we only respect violence as a defensive measure and before it gets to that point you should do what you can do resolve the issue by other means.

There are no such pits in any of the (many) African villages I have visited