There's a subtle joke in chapter 78 that I'm not sure is deliberate or not. While the most obvious thing connected to polyjuice potion and catgirls is what happens to Hermione in The Chamber of Secrets, what Harry does is mix physics and magic in a way that is also connected to catgirls. In some forums devoted to Dungeons and Dragons there's a saying that goes more or less like "Whenever you try to apply physics to magic, God kills a catgirl." I have to wonder if there's a deliberate reference to this.
I think that's a stretch. It's just another poke at canon.
(To Eliezer: if you're ever worried about the legal status of MoR, parody is the most obvious way to protect yourself under fair use doctrine, and these pokes at canon will be a main part of your case. I suggest not going light on them to the extent possible.)
(The HPMOR discussion thread after this one is here.)
This is a new thread to discuss Eliezer Yudkowsky's Harry Potter and the Methods of Rationality and anything related to it. There haven't been any chapters recently, but it looks like there are a bunch in the pipeline and the old thread is nearing 700 comments. The latest chapter as of 7th March 2012 is Ch. 77.
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.
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.
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: