Harry Potter and the Methods of Rationality

Professor Quirrell was silent for a long moment.

"I see," Professor Quirrell said, his voice now much milder. "Mr. Zabini, should such an event occur again, you may contact me directly. I have my own ways of protecting my friends. Now, a final question: Even with all the power you took into your hands, forcing a tie would have been difficult. Did Dumbledore instruct you as to who should win otherwise?"

"Sunshine," said Blaise.

Professor Quirrell nodded. "As I thought." The Defense Professor sighed. "In your future career, Mr. Zabini, I do not suggest trying any plots that complicated. They have a tendency to fail."

"Um, I said that to the Headmaster, actually," Blaise said, "and he said that was why it was important to have more than one plot going at a time."

Professor Quirrell passed a weary hand across his forehead. "It's a wonder the Dark Lord didn't go mad from fighting him. You may go on to your meeting with the Headmaster, Mr. Zabini. I will say nothing of this, but if the Headmaster should somehow discover that we have spoken, remember my standing offer to give you what protection I can. You are dismissed."

Blaise didn't wait for any other word, just turned and fled.

Professor Quirrell waited for a time, and then said, "Go ahead, Mr. Potter."

Harry tore the Cloak of Invisibility off his head and stuffed into his pouch. He was trembing with so much rage he could hardly speak. "He what? He did what?"

"You should have deduced it yourself, Mr. Potter," Professor Quirrell said mildly. "You must learn to blur your vision until you can see the forest obscured by the trees. Anyone who heard the stories about you, and who did not know that you were the mysterious Boy-Who-Lived, could easily deduce your ownership of an invisibility cloak. Step back from these events, blur away their details, and what do we observe? There was a great rivalry between students, and their competition ended in a perfect tie. That sort of thing only happens in stories, Mr. Potter, and there is one person in this school who thinks in stories. There was a strange and complicated plot, which you should have realized was uncharacteristic of the young Slytherin you faced. But there is a person in this school who deals in plots that elaborate, and his name is not Zabini. And I did warn you that there was a quadruple agent; you knew that Zabini was at least a triple agent, and you should have guessed a high chance that it was he. No, I will not declare the battle invalid. All three of you failed the test, and lost to your common enemy."

Harry didn't care about tests at this point. "Dumbledore blackmailed Zabini by threatening his cousin? Just to make our battle end in a tie? Why? "

Professor Quirrell gave a mirthless laugh. "Perhaps the Headmaster thought the rivalry was good for his pet hero and wished to see it continue. For the greater good, you understand. Or perhaps he was simply mad. You see, Mr. Potter, everyone knows that Dumbledore's madness is a mask, that he is sane pretending to be insane. They pride themselves on that clever insight, and knowing the secret explanation, they stop looking. It does not occur to them that it is also possible to have a mask behind the mask, to be insane pretending to be sane pretending to be insane. And I am afraid, Mr. Potter, that I have urgent business elsewhere, and must depart; but I should strongly advise you not to take your cues from Albus Dumbledore when fighting a war. Until later, Mr. Potter."

And the Defense Professor inclined his head with some irony, and then strode off in the same direction Zabini had fled, while Harry was still standing in open-mouthed shock.

Aftermath: Harry Potter.

Harry trudged slowly toward the Ravenclaw dorm, eyes unseeing of walls, paintings, or other students; he went up stairs and down ramps without slowing, speeding, or noticing where he trod.

It had taken him more than a minute after Professor Quirrell's departure to realize that his only source of information about Dumbledore being involved was (a) Blaise Zabini, who he would have to be an absolute gaping idiot to trust again, and (b) Professor Quirrell, who could have easily faked a plot in Dumbledore's style, and who might also think that a little student rivalry was a fine thing; and who had, if you stepped back and blurred out the details, just proposed turning the country into a magical dictatorship.

And it was also possible that Dumbledore was the one behind Zabini, and that Professor Quirrell had been sincerely trying to fight the Dark Mark in kind, and prevent the repetition of a performance he saw as pathetic. Trying to make sure that Harry didn't end up fighting the Dark Lord alone, while everyone else hid, frightened, trying to stay out of the line of fire, waiting for Harry to save them.

But the truth was...

Well...

Harry was sort of okay with that.

It was, he knew, the kind of thing that was supposed to make heroes resentful and bitter.

To heck with that. Harry was very much in favor of everyone else staying out of danger while the Boy-Who-Lived took down the Dark Lord by himself, plus or minus a small number of companions. If the next conflict with the Dark Lord got to the point of a Second Wizarding War that killed lots of people and embroiled a whole country, that would mean Harry had already failed.

And if afterward a war broke out between wizards and Muggles, it didn't matter who won, Harry would have already failed by letting it get that far. Besides, who said the societies couldn't peacefully integrate when the secrecy inevitably broke down? (Though Harry could hear Professor Quirrell's dry voice in his mind, asking him if he was a fool, and saying all the obvious things...) And if mages and Muggles couldn't live in peace, then Harry would combine magic and science and figure out how to evacuate all the wizards to Mars or somewhere, instead of letting a war break out.

Because if it did come down to a war of extermination...

That was the thing Professor Quirrell hadn't realized, the one most important question he'd forgotten to ask his young general.

The real reason why Harry had no intention of being argued into endorsing a Light Mark, no matter how much it would help him in his fight against the Dark Lord.

One Dark Lord and fifty Marked followers had been a peril to all of magical Britain.