The Philosopher's Stone would be phenomenally useful to Quirrelmort, and if it weren't really hard to get, he would presumably already have one. After all, if there's anyone with an incentive to find the easiest way to get their hands on one, it's him.

As for the Philosopher's Stone not being real, I doubt Dumbledore would have gone to such lengths to guard it if he weren't convinced it was, and I doubt tricking him into buying into a fake would be easy.

As to the second: the whole point of having it at Hogwarts to begin with was as bait for a trap, right? If everyone believes it's real, it serves just as well for that purpose as if it actually were real. Even if Dumbledore knew it was a fake, he would still have every reason to guard it to the best of his ability.

As to the first... what makes you think he hasn't?

Harry Potter and the Methods of Rationality discussion thread, part 9

by Oscar_Cunningham 1 min read9th Sep 2011725 comments

10


(The HPMOR discussion thread after this one is here.)

The previous thread is over the 500-comment threshold, so let's start a new Harry Potter and the Methods of Rationality discussion thread.  This is the place to discuss Eliezer Yudkowsky's Harry Potter fanfic and anything related to it. The latest chapter as of 09/09/2011 is Ch. 77.


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.  The fanfiction.net author page is the central location for information about updates and links to HPMOR-related goodies, and AdeleneDawner has kept an archive of Author's Notes.

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:

You do not need to rot13 anything about HP:MoR or the original Harry Potter series unless you are posting insider information from Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).

If there is evidence for X in MOR and/or canon then it's fine to post about X without rot13, even if you also have heard privately from Eliezer that X is true. But you should not post that "Eliezer said X is true" unless you use rot13.