Harry Potter and the Methods of Rationality

"He wha-"

Chapter 18: Dominance Hierarchies

Any sufficiently advanced J. K. Rowling is indistinguishable from magic.

"That does sound like the sort of thing I would do, doesn't it?"

It was breakfast time on Friday morning. Harry took another huge bite out of his toast and then tried to remind his brain that scarfing his breakfast wouldn't actually get him into the dungeons any faster. Anyway they had a full hour of study time between breakfast and the start of Potions.

But dungeons! In Hogwarts! Harry's imagination was already sketching the chasms, narrow bridges, torchlit sconces, and patches of glowing moss. Would there be rats? Would there be dragons?

"Harry Potter," said a quiet voice from behind him.

Harry looked over his shoulder and found himself beholding Ernie Macmillan, smartly dressed in yellow-trimmed robes and looking a little worried.

"Neville thought I should warn you," Ernie said in a low voice. "I think he's right. Be careful of the Potions Master in our session today. The older Hufflepuffs told us that Professor Snape can be really nasty to people he doesn't like, and he doesn't like most people who aren't Slytherins. If you say anything smart to him it... it could be really bad for you, from what I've heard. Just keep your head down and don't give him any reason to notice you."

There was a pause as Harry processed this, and then he lifted his eyebrows. (Harry wished he could raise just one eyebrow, like Spock, but he'd never been able to manage.) "Thanks," Harry said. "You might've just saved me a lot of trouble."

Ernie nodded, and turned to go back to the Hufflepuff table.

Harry resumed eating his toast.

It was around four bites afterward that someone said "Pardon me," and Harry turned around to see an older Ravenclaw, looking a little worried -

Some time later, Harry was finishing up his third plate of rashers. (He'd learned to eat heavily at breakfast. He could always eat lightly at lunch if he didn't end up using the Time-Turner.) And there was yet another voice from behind him saying "Harry?"

"Yes," Harry said wearily, "I'll try not to draw Professor Snape's attention -"

"Oh, that's hopeless," said Fred.

"Completely hopeless," said George.

"So we had the house elves bake you a cake," said Fred.

"We're going to put one candle on it for every point you lose for Ravenclaw," said George.

"And have a party for you at the Gryffindor table during lunch," said Fred.

"We hope that'll cheer you up afterward," finished George.

Harry swallowed his last bite of rasher and turned around. "All right," said Harry. "I wasn't going to ask this after Professor Binns, I really wasn't, but if Professor Snape is that awful why hasn't he been fired?"

"Fired?" said Fred.

"You mean, let go?" said George.

"Yes," Harry said. "It's what you do to bad teachers. You fire them. Then you hire a better teacher instead. You don't have unions or tenure here, right?"

Fred and George were frowning in much the same way that hunter-gatherer tribal elders might frown if you tried to tell them about calculus.

"I don't know," said Fred after a while. "I never thought about that."

"Me neither," said George.

"Yeah," said Harry, "I get that a lot. See you at lunch, guys, and don't blame me if there aren't any candles on that cake."

Fred and George both laughed, as if Harry had said something funny, and bowed to him and headed back toward Gryffindor.

Harry turned back to the breakfast table and grabbed a cupcake. His stomach already felt full, but he had a feeling this morning might use a lot of calories.

As he ate his cupcake, Harry thought of the worst teacher he'd met so far, Professor Binns of History. Professor Binns was a ghost. From what Hermione had said about ghosts, it didn't seem likely that they were fully self-aware. There were no famous discoveries made by ghosts, or much of any original work, no matter who they'd been in life. Ghosts tended to have trouble remembering the current century. Hermione had said they were like accidental portraits, impressed into the surrounding matter by a burst of psychic energy accompanying a wizard's sudden death.

Harry had run into some stupid teachers during his abortive forays into standard Muggle education - his father had been a lot pickier when it came to selecting grad students as tutors, of course - but History class was the first time he'd encountered a teacher who literally wasn't sentient.

And it showed, too. Harry had given up after five minutes and started reading a textbook. When it became clear that "Professor Binns" wasn't going to object, Harry had also reached into his pouch and gotten earplugs.

Did ghosts not require a salary? Was that it? Or was it literally impossible to fire anyone in Hogwarts