Harry Potter and the Methods of Rationality discussion thread, February 2015, chapter 112

Gondolinian

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 112.

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.)

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Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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

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 112.

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Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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

Why would he switch from Parseltongue to English and back to Parseltongue?

If Voldemort can lie in Parseltongue, then it's a ruse to conceal that fact. This has the dual effect of causing Harry to accept the literal truth of what VM says in Parseltongue without question, as well as persuading Harry to not even attempt to tell any direct lies to VM in Parseltongue. Those are both strong advantages manufactured from thin air, and VM is clever enough to spin such a deception.

And "snakes can't lie", really? That's a pretty odd inversion of colloquialisms like "speaking with a forked tongue." Ssuddenly I feel like ssomeone is trying to ssell me a bridge.

Inability to lie in Parseltongue has been established clearly enough that it would be very odd for it to be broken now.

Has it? Harry performed one simple test at a time when Voldemort expected that test to be performed, and we don't know that the results weren't influenced by other magic. We haven't seen it tested with occlumency. We certainly haven't seen it tested by a perfect occlumens. Even if we had seen those results it wouldn't be conclusive about what the most powerful wizard alive, who also knows the secrets of Salazar, is capable of.

I think for meta reasons that I'm probably wrong, but based only on in-world evidence I don't see any reason at all to take Voldemort's word that Parseltongue is a language of truth.