Quirrel did not know the lore of the Hallows, until Potter told him; at which point he discovered where the stone of resurrection was, and went to retrieve it. It seems to interfere a little too much that he then went on to study the whole lore to the fullest of his ability, seeing as he was not that interested in it from the beginning. (in canon, the gang learns of the symbol by talking to the father of Luna Lovegood, thats really not an obscure enough source for him to have missed)
The fact that Quirrell seemed not to know the symbol of the Deathly Hallows is very strange--the symbol is reasonably well-known in the wizarding world, as Grindelwald used it as his own. Which raises the question: was Quirrell's apparent failure to recognize the symbol an oversight on Yudkowsky's part, or an important clue?
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 96. The previous thread is at almost 300 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, .
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: