Pretty small - but not that much smaller than any other random 11 year old trying to kill someone
I'm sure that Harry's suspicions won't be primarily focused on other 11-year olds either. Snape/Quirrel/Voldemort's ghost would be his prime suspects. If and after he's eliminated them, he'll probably move to other professors, and then to upper-classmen students.
If he's in the end reduced to investigating 11-year old suspects, he'd probably still be first considering people like Zabini, or Crabbe, or Padma first. And now that i think of it, Susan Bones too, since who knows whether her double-witch powers are in reality a hint of some dark power possessing her or whatever.
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: