Horror movies based on human error
I would put this movie into a subcategory of "human error horror" - a movie where some simple and stupid mistake by humans puts people into a life and death situation. Such movies are effective because they show how easily we can all end up in some unreal situation, which we could never imagine happening to us. It shows us how easily a system can fail.
A prominent example of such horror if Open Water (2003) about divers being left into open water by accident. Frozen (2010) is also quite good. There is an old movie called Lady in a Cage (1964), about a woman being stuck in an elevator, which could also classify.
Can anybody name additional movies of that kind.