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 99, 100, and 101. The previous thread is at nearly 500 comments.
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, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27
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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.
From the Azkaban chapters:
Dumbledore's lesson from his room isn't that you needed to shut up and multiply, it's that war is so terrible that you must be willing to sacrifice anything so prevent it from occurring again. He prioritized people's lives to stop a war, but he's not willing to sacrifice anyone except to prevent more violence. Dumbledore never wanted to sacrifice his sacred values for the greater good, he was forced to by the war. From "Taboo Tradeoffs":
In "Pretending to Be Wise", Dumbledore says that the reason he doesn't subscribe to purely utilitarian ethics is because he doesn't trust himself:
So he sticks to his virtue ethics, unless he is forced to, since he doesn't trust his morality enough to do non-virtuous things in service of it, lest he become another Grindelwald. It is only when forced to that he abandons his principles, and only to prevent further violence. Choosing to sacrifice someone is against his nature, his room might remind him of the costs of that course of action, but it doesn't change who he is, only make him regret his failure in the War.
Add to that the fact that Filch is someone Dumbledore feels much sympathy toward, and the fact that he wasn't facing Lucius or anyone on the other side, him taking Filch's side is understandable, if not expected.