I found this article and I haven’t been able to stop thinking about it since. A fallacy is a ‘a mistaken belief, especially one based on unsound argument.’ Humans have been studying social fallacies for thousands of years; the Argumentum ad Populum is more commonly known as ‘everyone else is doing it.’ Social fallacies come in all shapes and sizes and geeks are guilty of our own social fallacies, too.
As a geeky person, I’ve been guilty of believing all of these geek social fallacies at one time or another. Perhaps you’ve been in an exchange with another person and it’s not going well. It might be because one or both of you is working off of a social fallacy. Might want to look into it.