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 81, which should be published later today. The previous thread passed 400 comments as of the time of this writing, so it will pass 500 comments soon after the next chapter is posted, if not before. I suggest refraining from commenting here until chapter 81 is posted; comment in the 12th thread until you read chapter 81. After chapter 81 is posted, I suggest all discussion of previous guesses be kept here, with links to comments in the previous thread.
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.) When posted, chapter 81 should appear here.
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,nine, ten, eleven, twelve.
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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.
My interpretation has been more that the 'dark' plans rely primarily on application of force (most often political rather than physical)--threatening, blackmailing, bribing--and trickery. They tend to work in the short run, but in the long run can poison his reputation (people notice how dark he acts over time) and have nasty side effects. For the most part Harry's dark plans are pretty clever, because his dark side is pretty ruthless and very clever.
If you take that definition for the plans his dark side comes up with, he actually started out with a light side plan (talk reason with Lucius, however undiplomatically) but resorted to a much darker plan B (force the issue via political loopholes) when that failed. Releasing the Dementor actually doesn't strike me as the kind of plan Harry's dark side tended to come up with, since for all its risk it doesn't really solve the problem or use his resources efficiently. It sounds like what normal Harry would come up with when very angry; the same normal Harry who was having happy thoughts about Guillotines right before the sorting.