Story-logic would indicate that she is indeed innocent, and we as readers have evidence that someone has indeed been messing with her mind, but Harry doesn't know what we as readers know.
Harry's had 7 months to know that Hermione isn't a sociopath or a psychopath, that she's a very kind and moral and ethical person instead.
What's the prior probability he should therefore assign to this person, out of all of Hogwarts, to be the one to commit a cold-blooded murder on another 11-year-old kid? I think he's giving the hypothesis of her actual guilt pretty much all the weight that it deserves - effectively zero.
Well, then condition on the fact that Querril caught her and she has memories of doing it.
The new discussion thread (part 15) is here.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 82. The previous thread passed 1000 comments as of the time of this writing, and so has long passed 500. Comment in the 13th thread until you read chapter 82.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
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: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13.
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: