We have an outcome pump on our hands that says that Harry is going to tear apart the stars. He can do that for better or worse reasons, and with a better or worse outcome. Quirrel thinks that a Harry that isn't crippled by a centaur (since Quirrel already knows Harry won't die) has a better chance of producing a good outcome than another Harry.
Remember that he offered in chapter 95 to read some of his science books and speaking of what comes to mind (...about a month ago. Why isn't Harry omnipotent yet? When I read that Quirrel's suggestion, I thought the rest of the story would have to be squeezed in the time it takes Quirrel to regain sentience.)
It seems plausible that Quirrel read the science books and isn't going to tell Harry anything reality-breaking, since he did a similar thing with the library - after telling Harry that Memory Charms are just filed under M, he says he's going to put some of his own special wards on the restricted section.
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: