The commenter below had the phrase I couldn't remember.

The go-to example is usually a trampoline or pool that isn't fenced off and kids get hurt or drown. The kids aren't blamed because, they're just kids, they don't know any better. The adult, landowner, should have taken precautions to prevent it.

It's good to protect people who can't protect themselves, but it's also a little bullshit that you need to think about how to legally protect yourself vs. providing an area for people to be outdoors.