Do you work with anyone that has the responsibility level of a child? I do, several of them in fact.
They are all happy-go-lucky idiots that think the world is just a rosy old place. They collect a paycheck, do minimal work, always tell people to relax, it's not a big deal? Got any of those?
Well, I have a theory. You know when office workers go psycho and start shooting people? My theory is that those people were relatively mentally stable at the beginning, but over time, the happy idiots wore on them. The HI's got away with murder and often impacted the normal employee, usually telling them
no big deal; it's not worth worrying about; why stress over it. One day, the normal employee just has enough of it and BOOM! All of a sudden you get multiple casualties.
Y'see, I work with a moron like that, actually more than one. And someday soon, they won't be working here anymore.