For Quirrell it would be "in character" to kill Dumbledore in such a way, that everybody would think it was natural death. Or at least assasinate him quietly without witnesses, without time for Dumbledore to react.
BTW - what stops Quirrell from polyjuicing as Harry, asking for private audience in Dumbledore apartment, doing quick surprise Avada Kedavra, and flying out of window? Or better yet - put Albus body to magical pouch, polyjuice as Dumbledore and run Hogward ever since. Dumbledore behaves quite strange, and rarely shows publicly, so it wouldn't be hard to do.
I can only think that Quirrell thinks everything is going according to plan, and no need to make the game more chaotic by killin Dumbledore now.
BTW - what stops Quirrell from polyjuicing as Harry, asking for private audience in Dumbledore apartment, doing quick surprise Avada Kedavra, and flying out of window? Or better yet - put Albus body to magical pouch, polyjuice as Dumbledore and run Hogward ever since. Dumbledore behaves quite strange, and rarely shows publicly, so it wouldn't be hard to do.
Dumbledore might have other methods of recognizing such a disguise. Perhaps, for instance, he can detect the approximate magical strength of a person regardless of their appearance? In Half-Blood Prin...
(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: