The idea of someone deserving death in itself is deontological (some people must be punished and that's a rule) while talking about the net utility of whatever is consequentialist. Ethics should be impersonal (that is, treat everyone equally) so a consequentialist ethical system that doesn't approve of death in general should never approve of a death of any single person as an end in itself.
Generally, it seems to me that for a consequentialist, talking about an act or a person being evil should only be computational shortcuts over the real substance of moral reasoning (which consists of assigning utility to world-states). Like in the common example of an airplane that we describe using aerodynamics because that's convenient even though really it runs on the same fundamental laws as everything else. We tend to use those shortcuts reflexively without really thinking what we are trying to say in consequentialist terms.
Ethics should be impersonal
Some disagree. And beware of "should" statements regarding "ethics".
The new thread, discussion 13, is here.
This is a new thread to discuss Eliezer Yudkowsky's Harry Potter and the Methods of Rationality and anything related to it. With three chapters recently the previous thread has very quickly reached 1000 comments. The latest chapter as of 25th March 2012 is Ch 80.
There is now 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.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: one, two, three, four, five, six, seven, eight, nine, ten, eleven.
As a reminder, it's often useful to start your comment by indicating which chapter you are commenting on.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: