Sirius didn't seem to me to be quite intelligent enough for that. Harry makes a comment about Pettigrew being substantially smarter than Black. Additionally, there was this line:

"You are the clever one," said the voice, and the black mist evaporated away, no longer obscuring; she saw the face beneath, and recognition sent a jolt of terrified adrenaline bursting through her -

Mr. Hat and Cloak is apparently someone Hermione is familiar enough with to recognize at a quick glance.

It's easily possible that Hermione has seen at least one picture of Sirius (she mentions him by name as the Potters' betrayer in Chapter 8), and given her memory it would be plausible for her to recognize him, even months afterward. Additionally, Sirius is one of the few people who would cause an immediate reaction of terror at first sight.

Another one might be - bear with me here - Lucius Malfoy. This idea is a little shakier, as it's less plausible that Hermione is familiar with his appearance, but the advantage is that it neatly accounts for the otherwis... (read more)

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

by Oscar_Cunningham 1 min read9th Sep 2011725 comments


(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 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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.