Harry Potter and the Methods of Rationality

What he should have done after the first time he met with Granger.

What Harry Potter had told him to do, trained him to do, and yet Harry had also warned Draco that it would take time to make his brain realize that the methods applied to real life, and Draco hadn't understood that until today. He could have avoided every single one of his mistakes if he'd just applied the things Harry had already told him -

Draco said out loud, 'I notice that I am confused.'

Your strength as a rationalist is your ability to be more confused by fiction than by reality...

Draco was confused.

Therefore, something he believed was fiction.

Granger should not have been able to do all that.

Therefore, she probably hadn't.

I promise not to help General Granger in any way that the two of you don't know about.

With sudden horrified realization, Draco swept papers out of the way, hunting through the mess on his desk, until he found it.

And there it was.

Right in the list of people and equipment assigned to each of the three armies.

Curse Professor Quirrell!

Draco had read it and he still hadn't seen it -

The afternoon sunlight poured down into the office of the Sunshine Regiment, illuminating General Granger in her chair as though she glowed with a golden aura.

'How long do you think it will take Malfoy to figure it out?' said General Granger.

'Not long,' said Colonel Blaise Zabini. 'He may have already. How long will it take Potter to figure it out?'

'Forever,' said General Granger, 'unless Malfoy tells him, or one of his own soldiers realizes. Harry Potter just doesn't think like that.'

'Really?' said Captain Ernie Macmillan, looking up from one of the corner tables where he was being crushed at chess by Captain Ron Weasley. (They'd brought back all the other chairs after Malfoy had left, of course.) 'I mean it seems kind of obvious to me. Who would try to come up with all the ideas just by themselves?'

'Harry,' said Hermione, at exactly the same time Zabini said, 'Malfoy.'

'Malfoy thinks he's way better than everyone else,' said Zabini.

'And Harry... doesn't really see most other people like that,' said Hermione.

It was kind of sad, actually. Harry had grown up very, very alone. It wasn't that he went around thinking in words that only geniuses had a right to exist. It just wouldn't occur to him that anyone in Hermione's army besides Hermione could have any good ideas.

'Anyhow,' Hermione said. 'Captains Goldstein and Weasley, you're on duty for thinking up strategic ideas for our next battle. Captains Macmillan and Susan - sorry, I mean Macmillan and Bones - try to come up with some tactics we can use, also any training you think we should try. Oh, and congratulations on your marching song, Captain Goldstein, I think it was a big plus for esprit de corps.'

'What're you doing?' said Susan. 'And Colonel Zabini?'

Hermione stood up out of her chair, stretching. 'I'll try to figure out what Harry Potter is thinking and Colonel Zabini will try to figure out what Draco Malfoy might do, and both of us will join you again after we come up with something. I'm going to walk while I think. Zabini, you want to come along?'

'Yes, General,' said Zabini stiffly.

It hadn't been meant as an order. Hermione sighed to herself a little. This was going to take some getting used to, and although Zabini's first idea had certainly worked, she wasn't quite sure that Professor Quirrell's quote mixture of positive and negative incentives unquote would be enough to keep the Slytherin fully on her side until December when traitors would be allowed for the first time...

She still had no idea what she was going to do with Professor Quirrell's Christmas wish, either. Maybe she'd just ask Mandy if she wanted anything, when the time came around.

Chapter 32: Interlude: Personal Financial Management

'But Headmaster,' Harry argued, some of his desperation leaking into his voice, 'leaving all of my assets in one undiversified vault full of gold coins - it's crazy, Headmaster! It's like, I don't know, doing Transfiguration experiments without consulting a recognized authority! You just don't do that with money!'

From the lined face of the old wizard - underneath a festive holiday hat like a catastrophic automobile collision between cars of green and red cloth - a grave, sad look peered out at Harry.

'I'm sorry, Harry,' said Dumbledore, 'and I do apologize, but allowing you control over your own finances would give you far too much independence of action.'

Harry's mouth opened and no sound came out. He was, literally, speechless.

'I will permit you to withdraw five Galleons for Christmas presents,' said Dumbledore, 'which is more than any boy your age should spend, but poses no threat, I think -'

'I can't believe you just said that!' the words burst out of Harry's mouth. 'You