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:
You do not need to rot13 anything about HP:MoR or the original Harry Potter series unless you are posting insider information from Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).
If there is evidence for X in MOR and/or canon then it’s fine to post about X without rot13, even if you also have heard privately from Eliezer that X is true. But you should not post that “Eliezer said X is true” unless you use rot13.
I think you're right. If Eliezer is keeping the Harry-as-horcrux plot element, and we're still living in a world without souls or an afterlife, the horcrux in Harry would be a part of Voldemort's memories and personality, because that's what a "soul" really is.
I don't know if it's been mentioned before, but this probably explains Quirrel's trances. He has distributed a large part of his mind across several parts of the globe he no longer has access to. This means his mind can't function properly 100% of the time. (Would his mind function better when he's near Harry?)
I think it's more likely that the Horcruxes are static copies, like system backups, and Quirrel's zombie periods are because the original Quirrel is, in fact, still present in some lobotomized form, and Voldemort is merely imposing his soul / brain state onto the tissue by force of magic. While he can maintain it, it is costly, and he conserves strength by letting the damaged brain run the body most of the time. It might also be the case that this is to preserve the livespan of the possession, since Voldemort's presence in Quirrel's body appears to be slowly killing him.