As everyone knows, even the most miniscule and irrelevant divergence from absolute 100% incorrigible verisimilitude will render even the most well-written spec fic completely unreadable.
Only Harry Potter could have a character with such depth. It requires close analysis, but the realisation that an angry woman calms down after she sees an abused child is truly masterclass writing. Took me five times to pick up on the subtlety though.