We have strong evidence suggesting that bringing people back to life is possible in this setting, and turning wizards into the same person except not-magic is possible. It does not require God-like powers, or even as much investment as bringing them back to life as magical beings, so much as it requires MoR!Harry to have been more invested in his ethics.
Of course, if he were, then they'd probably not have needed to die in the first place.
On the other hand... According to various world clocks, 37 people die every 15 seconds. I'm not so heavily into the effective altruism movement as to make an enemy of all but the most efficient options, but it's a number to remember. Most alternative methods for incapacitating the Death Eaters less-lethally would have had greater risk of failure, and most methods for would require significantly more time and magical power than saving an average life.
For as much as it makes Harry sympathetic to wish he didn't kill them, there's only so much investment to that purpose before it would be bad thinking of its own -- even if you don't value their lives less.
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 117.
Plans for next chapter release:
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.)