Well, what do we actually know about the sequence of events? Assuming that things are presented in chronological order seems a bit premature, especially in this fic. More specifically, of the Aftermaths last chapter we know that
Dumbledore+Harry began at 6pm (with an addendum at 9),
Quirrel+Snape was precisely at sunset,
Draco+Bulstrode was at some unknown time in the afternoon or evening,
Draco+Goyle was some unknown time after that, and
Hermione+Mr H&C was also unknown, but either before or after Draco+Bulstrode (since Millicent was present at the meeting Hermione was coming from.)
As far as I know, we are given no indication at all when Interlude with the Confessor happens. It could be immediately after Snape gets back from the meeting with Quirrel, it could be immediately after Hermione is mindraped, it could be the next day for all we know.
But even assuming the Aftermaths are in chronological order, and the Interlude does immediately follow on to the last Aftermath... Snape could have been, say, checking on the third-floor corridor to make sure Quirrel wasn't bluffing about having stolen and replaced the Stone. In fact, I would expect him to have done this anyway, whether or not he then put on a Hat and Cloak and serial-Obliviated a twelve year old girl. (Eugh.)
That's all true. And on re-reading, I'm going to go back to my original thought of Quirrel, with the emotional involvement being faked to keep Hermione's interest. Quirrel did, after all, speak up for her when all others were silent.
(The HPMOR discussion thread after this one is here.)
The previous thread is over 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 latest chapter as of 09/09/2011 is Ch. 77.
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, eight. 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: