(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:
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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.
Snape says this in both MoR and the original book:
Isn't this silly? Of course you can stopper death, because duh, poisons exist.
It might be just a slip-up in the original book, but I'm hoping it will somehow make sense in MoR. My first thought was that maybe a magical death potion couldn't be stopped using magical healing, unlike non-magical poisons.
I asked this on IRC and got some interesting ideas. feep thought it might mean that you can make a Potion of Dementor, which would fit since dementors are avatars of death in MoR and stoppering death would be actually impressive if it meant that. Orionstein suggested it might be a potion made from eg. a bullet that's killed someone, which, given what we know of how potions work from chapter 78, might also result in a potion with deathy effects above and beyond just those of poison.
What I got from that was snape claiming to be able to temporarily store or stop death. To extend someones life. Not a great interpretation in hindsight, but I was ~ten the last time I heard that line so I'll forgive myself.