If we're not supposed to use our logic here, then the whole thing is pointless.
You don't use logic because you're "supposed to".
If we're going to divert to this tangent then I'll say that yes, in fact, often people do use logic because they are "supposed to". You could make the normative claim that you're not "supposed to" use logic because you're "supposed to". But the descriptive one is as false as the normative one is arbitrary.
But the descriptive one is false.
And wasn't intended meaning.
Update: Discussion has moved on to a new thread.
The hiatus is over with today's publication of chapter 73, and the previous thread is approaching the 500-comment threshold, so let's start a new Harry Potter and the Methods of Rationality discussion thread. This is the place to discuss Eliezer Yudkowsky's Harry Potter fanfic and anything related to it.
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: one, two, three, four, five, six, seven. The fanfiction.net author page is the central location for information about updates and links to HPMOR-related goodies, and AdeleneDawner has kept an archive of Author's Notes.
As a reminder, it's often useful to start your comment by indicating which chapter you are commenting on.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: