Harry Potter and the Methods of Rationality

"So you can work your charms on General Potter?" said Lavender, as Hermione ignored both of them as hard as she could. "I've got to say, Traces, I think our Sunshine General has him pretty well sewn up by now - you'd have better luck convincing Hermione that the three of you should have one of those, you know, arrangements -"

Nobody had figured out yet what Draco Malfoy was plotting.

"Certain?" said Harry Potter, sounding rather reluctant. "You know a rationalist isn't ever certain of anything, Hermione, not even that two and two make four. I can't actually read Malfoy's mind, and if I could, I couldn't be certain he wasn't a perfect Occlumens. All I can say is that based on what I've seen of Malfoy, it's a lot more plausible than Daphne Greengrass thinks, that he actually is trying to show the Slytherins a better way. We should... we really should try to go along with that, Hermione."

(Well, Harry seemed to think Draco Malfoy was a good guy. But then the trouble was that Harry also tended to trust people like Professor Quirrell.)

"Professor Quirrell," Harry said, "I'm worried about the hatred Slytherin House seems to be developing for Hermione Granger."

They were sitting in the Defense Professor's office, Harry sitting far back from the teacher's desk (and the sense of pending disaster was still noticeable, even then), the empty bookcase still framing Professor Quirrell's balding head. The cup balanced on Harry's thigh was filled with Professor Quirrell's obscure, probably-expensive Chinese tea, and it said something about the way Harry had been thinking lately that he'd needed to make a conscious decision to drink it.

"And this concerns me for what reason?" said Professor Quirrell, sipping his tea.

"Yes, well," said Harry, "I'm just going to ignore that - oh, stop that, Professor Quirrell, you've been plotting to restore Slytherin House's reputation since at least the first Friday of this year."

There might have been a tiny crack of a smile, at the edges of those thin pale lips; and then again, there might not have been. "I think Slytherin's House will do well enough in the end, Mr. Potter, regardless of the fate of one girl. But I do agree that the present outlook is not favorable for your little friend. The bullies of two Houses, many of them with powerful and well-connected families, see Miss Granger as a threat to their reputation and a shame to their pride. As powerful a motive as that is to hurt her, it pales compared to the raw envy of the Gryffindors, who see an outsider gaining the laurels of heroism which they have dreamed of since childhood." Now the smile on Professor Quirrell's lips was definite, though slight. "And then there are those of Slytherin House who hear that Salazar Slytherin's ghost has abandoned them to favor a mudblood. I wonder if you can even conceive, Mr. Potter, of how such as they would react? Those who do not believe it would cheerfully kill Miss Granger for the insult. And as for those Slytherins who wonder deep down, in some quiet place within themselves, if it might perhaps be true... their inner panic is something scarcely to be contemplated." Professor Quirrell sipped his tea equably. "When you are more experienced, Mr. Potter, you will see such consequences in advance of your plotting. As it stands, you are being ill-served by your willful ignorance of all human nature you deem unpleasant."

Harry sipped his own tea.

"Ah..." said Harry. "Professor Quirrell... help?"