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:
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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.
I'm curious why the spell has to be shot out from the wand, rather than from a completely different direction or appearing spontaneously in the middle of the target. There's an underlying assumption that magic is like lasers and wands are like guns in much of Canon!HP and in MOR, but that doesn't really seem justified. Maybe this is just another conceptual limitation?
You're right, no hint of an explanation why wands are necessary has ever been given. Spontaneous underage magic, as well as high-level wandless magic, would be evidence in favour of the "conceptual limitation" theory.
On the other hand, this wouldn't explain why Bacon, who apparently lacked this conceptual limitation, was severely held back in his research by lack of a wand. Also, it doesn't explain why high-level wizards continue to use wands for the overwhelming majority of their spellcasting.