I've been wondering about this for a while, but never had a chance to do the required detective work. Were Harry and the Defense Professor in the castle at the time? If so, when Dumbles said "Find Tom Riddle..." he most definitely learned that HP and QQ were both Tom Riddles.
So... were they in the castle at the time? Or was QQ at St. Mungo's or the DMLE?
At the time when Dumbledore uses the map, Harry is in Hogwarts, investigating, while QQ is at the DMLE, being investigated.
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 116.
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.)