Inspired by the British Library's recent Harry Potter exhibition A History of Magic, Rowling's Potterverse publisher is releasing four new e-books about the world of Harry Potter. The A Journey Through series dedicates whole books to subjects like spellcasting schools, which range from Divination all the way to Defense against the Dark Arts, in order to explore "the traditional folklore and magic at the heart of the Harry Potter stories."
Which, yeah, no thank you. We already know what happens when J.K. Rowling tells us about the history of magic, and it ends with us imagining the world's greatest masters of the arcane letting poop dribble down their legs.
Expanding a fictional universe can be thought-provoking, even game-changing. But Rowling is more infamous for creating the kind of new canon most fans would like to shoot out of the old one. Aside from great magical revelations like wizards pooping where they stand or evil snakes secretly being Korean women, Rowling has also taken a lot of heat for constantly trying to retroactively jam in diversity like an over-corrected parent trying to encourage her kids to experiment in college because she never had the guts to the first time around. It's gotten so bad that she's been called the George Lucas of literary retconning, and her Twitter outbursts have become a meme.