This was the primary conclusion that I came to as well. Quirrell has already demonstrated a propensity for playing multiple identities. Plus, if I were in his place as a professor needing a fallback secret identity, I would want it to be someone who nobody would find me suspiciously incongruous with on account of it actually also being me.
Also, the fact that the unnamed person lived in isolation, and was estranged from his family and friends, is evidence for this hypothesis. If he's under Imperius, being impersonated with polyjuice, or otherwise being magically replaced, Voldemort wouldn't want people around him who would notice any sort of incongruous behavior, or force him to play a role full time.
The next discussion thread is here.
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 84. The previous thread has passed 500 comments. Comment in the 14th thread until you read chapter 84.
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: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14.
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: