At one point, after the fourth season, I was going to make a thread to post all the 80s inconsistencies in the show. For example, there was never one use of the word "gay" as in "that's so gay" which was a ubiquitous phrase at the time. (EDIT: Fag was also a common term in North America, even if the word had a different meaning across the pond.) There was also a scene where somebody said something along the lines of "and then this random guy shows up" which is not a phrasing that has come into popular use until recently. This season Harbour says they're going to watch a Miami Vice marathon, which never would have been a thing. This season also, the kids are using the term "Sorcerer" in its contemporary D&D version. They would not have used that distinction in the 80s. IIRC Sorcerer was the name of one of the Magic-User levels.