@fribbledom I'll give you a (hopefully) safe example: the Oxford comma debate. As a pro writer of both books and mag articles I can tell you that there is no one "style" but instead a few high-level ones (AP/Chicago/MLA) + a "house" style a pub bases on one of those. I know each major + house style for my pubs and apply Oxford comma when it's house style and I don't when it's not. It's like MMA for grammar.