Snape's plotting here is interesting, but I'm not sure what he is actually trying to accomplish.
Quick rundown of what we know:
So I suspect a few things:
Now, if we ascribe his love for Lily as his primary motivation (Which "Sunk Costs" seems to support) , his support of Hermione, and his plotting to restore the reputation of Slytherin makes sense. What I don't understand is why he needs to hide this from Dumbledore. Even if his motivations are counter to those of Dumbledore (I.E. He's actually evil), all of these actions would cement Dumbledore's trust in him. I can think of a few possible reasons:
None of these are particularly satisfying or convincing, hence why i'm throwing the question out there.
Edit: People have repeatedly pointed out that Snape's attachment to Lily was either broken or reduced by Harry's analysis of the situation, and that Snape's kiss in Sunk Costs was a reflection of that, and I can't help but agree.
I don't believe Snape values his love for Lily, past or present. I believe Snape is scheming to his own ends and by his own mercilessly practical means. He's not the best at it, but he's left the chump train.
Snape forced the escalation in order to get justification to do exactly what he did at the end of the first scene of chapter 75, where the following describes him admonishing the top Slytherin bullies:
..."You will do nothing," hissed their Head of House. Severus Snape's face was enraged, when he spoke small spots of spittle flew from his mou
EDIT: New discussion thread here.
This is a new thread to discuss Eliezer Yudkowsky's Harry Potter and the Methods of Rationality and anything related to it. With two chapters recently the previous thread has very quickly reached 500 comments. The latest chapter as of 17th March 2012 is Ch. 79.
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.
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: