"Having made the Unbreakable Vow, it is impossible for me to engage in motivated reasoning which would put the world at risk, while it is entirely possible for you to do so. I am convinced that you are more likely to fulfill the prophecy by killing me than by letting me live. Since my reasoning is not and cannot be motivated in such a way as to put the world at risk, while yours can be, it is more likely that I am right, and it would be to your advantage not to kill me."
Also, if Harry finds it impossible to say this in Parseltongue, then he will simply agree to die, since it will be safer for 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 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: