"No action" is an action, same as any other (for a grokkable reference, see consequentialists and the Trolley experiment). Also, obviously it wouldn't be "no action" it would be selling Voldemort the idea that there's nothing left, maybe revealing the secret deemed most insignificant and then begging for that to apply to both parents.
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: