If everyone was under an unbreakable vow not to commit crimes, Voldemort (who has horcruxes and can't die from something as simple as an unbreakable vow) would just need to get one law passed saying that all must obey him. Vows against lying can be bypassed with memory charms, so they're not really any better then veritaserum.
The Vow doesn't kill you if you violate it, it makes you unable to violate it.
Voldemort can't get the law passed that everyone must obey him because the law-passers are vowed not to be intimidated by snake-nazis.
Its vows all the way down.
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 119.
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.)