Rowling-canon strongly implies that Dumbledore was the reason Voldemort didn't attack Hogwarts; that is, Dumbledore's presence at Hogwarts protected the castle, and not the other way around. Hogwarts fell very soon after Dumbledore's death. However, while Dumbledore may have prevented Voldemort from outright capturing Hogwarts, in the same way he stopped Voldemort from outright capturing the Ministry, he proved unable to prevent Voldemort and friends from repeatedly sneaking into the castle, and he doesn't have the time to personally guard the Potters 24/7.
Edit: New thread posted 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 86. The previous thread has long passed 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.
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: