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Your first paragraph with very small tweaks (laws of physics etc., not law) could also apply to human attendants in elevators.

The second paragraph… hard to make a call on that one.

I think you'll find elevator attendance errors rather cheaper.

Typical lawyer mistake versus an elevator mistake? Depends on the nature of each mistake. Elevator accidents can be serious.

We're talking about the guy that presses the buttons for the people taking the elevator, yes? What serious elevator accident might arise from that?

Talking about that guy, or the lack of that guy, historically in elevators of various vintages.