This seems to be the case. It all ties together to nicely not to be. Sixteen years ago, Firenze (I assume that is who the centaur is, from his views and attitudes) told Lilly that "the world would end if she were nice to her sister", based on the same prophecy based on which he tried to kill Harry: One that was similar to the one Trelawney made.
Remember also the twice-repeated wave of prophecies over the world, despite the fact that we are told that disturbances in time are never enough to cause more than a single prophecy. It would make sense that if any prophacy could be of such import, it would be one about the end of the world.
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: