I'd say that the secret protected by the fidelius couldn't actually include the Secret Keeper (also that no secret keeper can enter a diffrent fidelius), but Dumbledore attended meetings at #12Grimwald Place, so that can't be how it worked in canon. There could be some nasty side-effect to the secret keeper hiding inside the Fidelius ey keeps, like it threatening to damage their soul or weakening the fidelius or shortening the keeper's lifespan or something, but that'd be the sort of nerfing EY has said he probably won't be trying.
I have to assume, though, that if a secret keeper dies and the secret hasn't been given to someone else, the fidelius breaks, otherwise we get permanent secrets, which are just broken.
I interpreted their failure to do such a thing not as being illogical--they did have Lily, after all--but as part of a downside to the spell. As in, yes, the Secret Keeper being in the hidden area would destabilize the spell given enough time. It couldn't be too little of time, or Dumbledore wouldn't risk coming in, but as I recall he just popped in and out. This is what I mean, when I say that it's not perfect--a perfect hiding spell would have allowed the weakness to be hidden inside with it.
That kind of limitation actually makes sense from an in-univer...
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 96. The previous thread is at almost 300 comments.
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, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, .
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: