People sometimes forget where they left things. Even important things. Even things where somebody can die if you don’t remember in time.

It’s kind of like asking “what kind of accident are you imagining where someone leaves a baby in a hot car?” Nobody is expecting that to happen to them, but sometimes a person just forgets for no logical reason.

That’s not to say they’re not still responsible for whatever happens, though. But it’s still good to give consideration to the possibility.