It is not unlikely that the person for example was stressed because he/she had to meet the deadline and tried to rush the printer, pulled the paper, whatever. Just think about what many many idiocies can happen to you when you are feeling a lot of pressure - or when you are tired. It just seems as if your IQ has at least halfed in two.

On the other hand people like to use such kinds of excuses on a regular basis and you could argue that they should have printed earlier and thought of a backup-solution.

Though academics tend to accept valid arguments and admit defeat they also tend to have very precise ideas of how people should function, think or work. Control your language, overly specify the meaning of a word, too rigid rule=>outcome way of thinking.
I think this comes from the wish to predict or deduce facts from the knowledge we have, as much as possible. But like this very “Bullshit example” illustrates, especially in real live where you do not know everything being wrong is very likely. We use models and shouldn’t forget that - they don’t apply everywhere and are just approximations.

Okay, I may have overused that example a little (maybe you could see the face expression and knew it was non-sense), but I think you know what I mean

This more or less extends to problems like justice and legislative. I think there are enough examples that show how difficult it is to determine what the truth is.

So one negative side is also: Far to self-confident. No you don’t know what other people think - it is at most an educated guess!

BTW: You wrote some pretty interesting stuff about people behavior. Some informal posts (just like you did) about human behavior would be appreciated.