As a move that Harry can devise, this requires a description of the thinking that makes it possible. He's not told the full prophecy and doesn't know which prophecy Voldemort is talking about. I didn't realize he could piece it together sufficiently, but in Ch. 21 he hears the beginning of the first prophecy (THE ONE WHO WILL TEAR APART THE VERY S...); in Ch. 86 Quirrell discusses it with him, pointing out that Harry or Quirrel are likely ones with the power to enact or prevent the event that the prophecy is concerned with; and in Ch. 101 the centaur implies that there is a prediction that "soon the skies will be empty" with Harry responsible yet somehow "innocent" in an unclear sense.
Your point on a description of Harry's thinking is well-taken. I just had my brother submit this as a review, to err on the side of caution:
"With NickRoy's permission, I am submitting his solution, which I agree with, with additional evidence appended, just in case that is necessary; so consider this as superseding NickRoy's submission:
[the relevant text is here in the submission, but I don't need to repeat it in this comment]
Appended:
Harry does not know the full prophecy for certain, but he can guess it, based on: Harry's thought on star lifting in r...
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 113.
There is 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.)
IMPORTANT -- From the end of chapter 113: