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 88-89. The previous thread has 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, 17, 18.
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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.
I'm surprised to see everyone overlook the most obvious possibility: Voldemort.
Point one: The earlier prophecy was probably about the same person, and he hadn't arrived yet at the moment. Even if it was about something different. 'he has come' in the last prophecy implies that he had just arrived.
Point two: Voldemort appears to love destruction. I still don't know how someone as intelligent as him hadn't killed everyone in the ways Harry thought of -. Harry's intent to kill, which is presumably very Voldemort-like, is extremely creative and effective even at his magic level and age. But assuming that Voldemort is about destruction, he might want to end the world.
Quirrell or someone (e.g. Snape) might have resurrected Voldemort right after stealing the Philosopher's Stone - a time-turner may be involved.. Dumbledore was away, Snape might be unreliable, it could have easily happened. A counterindicator is that Dumbledore is probably also aware of this risk, and therefore might have taken counter-measurements, although we can see that Quirrell can fool him in the part where he learns about the zoomagus potion left in Bellatrix's cell (though it portrays himself and Snape as significantly inferior to Voldemort and Quirrell, so I'm reluctant to believe it was real, rather than them acting in front of McGonagall).