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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.
Not strictly true: if Quirrell both wanted Harry dead and was able to kill him then he would kill him.
It seems to me we have to consider two hypotheses, each of which is problematic:.
Both hypotheses contain a puzzle. If Quirrell is unable to kill Harry, why is that? (One guess: his offering to spare Harry in exchange for Lily's life created a binding dark ritual, and Quirrell can't get out of it.) Alternatively, if Quirrell is able to kill Harry, what exactly makes Harry so supremely valuable? Using Harry in a resurrection ritual, or as a puppet ruler of magical Britain, don't seem to be high enough value when measured against the risk, do they?
My initial thought was that Chapter 101 provides evidence against 1 and in favour of 2: if Quirrell's problem is an inability to kill Harry, then Quirrell could just let the centaur do the job instead. But then, the Time-Turner evidence means that Quirrell already knows that the centaur's attempt will fail anyway, so he might as well stop it himself (and stay in Harry's favour). I still don't think we can rule out hypothesis 1.
Quirrell said he considered killing Harry at some point, so there are 3 possibilities: 1) he's lying, 2) there is a dark binding ritual that he doesn't know about, or 3) there is no dark ritual. Considering his knowledge of dark rituals we can rule out number 2, and since there isn't a clear reason why he'd tell this specific lie, I'm going to go with 3.
If Quirrell doesn't want Harry dead then obviously he'd stop the Centaur, and if he does want Harry dead, he wants to do it on his own terms, with nothing left to chance and no loose ends, so again he'd stop the Centaur.