Yes, that’s what I’m asking.

Dropping things shouldn’t be illegal. Negligence that causes harm should be.

Someone lowering a hat down on a string seems perfectly fine. Throwing a chair out a window seems bad. I think the details would affect whether someone is illegal, not just a blanket “thou shall not throw things out the window.”

There’s already laws about littering and assault, so I don’t think that would matter how many floors up we are.

Why ask boring questions?