I found an open safety pin on a parking lot and wondered whether it failed it’s job. A safety pin is only safe when closed. Maybe the thing the pin was supposed to secure got lost because the owner didn’t get aware of the open pin.
I think that’s a common problem. You think everything is secured because you use lots of emotional safety pins and then you miss the moment one of the pins opens unintentionally. Later on things get out of control and you don’t know why.