Harry Potter and the Methods of Rationality discussion thread, February 2015, chapter 108

b_sen

New long chapter! Since I expect its discussion to generate more than 160 comments (which would push the previous thread over the 500 comment limit) before the next chapter is posted, here is a new thread.

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 108 ~~(and chapter 109, once it comes out on Monday)~~.

EDIT: There have now been two separate calls for having one thread per chapter, along with a poll in this thread. If the poll in this thread indicates a majority preference for one thread per chapter by Monday, I will edit this post to make it for chapter 108 only. In that case a new thread for chapter 109 should be posted by whoever gets a chance and wants to after the chapter is released.

EDIT 2: The poll indicates a large majority (currently 78%) in favor of one thread per chapter. This post has been edited accordingly.

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Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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

EDIT 2: The poll indicates a large majority (currently 78%) in favor of one thread per chapter. This post has been edited accordingly.

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 have a cunning plan:

What constraints are Harry working under?

The deadman switch hostage killer cannot have go off because they are timeturned, and the deaths of hundreds of students would surely cause a paradox by disrupting the match. Its possible that it sets a timer to go off after Harry jumps back in time, but then presuming that Harry knows exactly when he jumped back and Quirrel does not, Harry can then warn the teachers before the bomb goes off. At the end of the day, even if the hostages die, hundreds of lives are a small price to pay for stopping Voldemort.

If Quirrel dies, he will come back and torture Harry's parents. But presumably it will take Quirrel a little time to possess his new host. If the accessible Horocruxes are scattered throughout the world, then he will probably have to apperate back to the UK, which could take several jumps. Meanwhile, all Harry has to do is send his patronus to Dumbledoor, who can then Phoenix travel to Oxford, and should get there first, bringing Harry's parents back to the comparative safety of Hogwarts.

Quirrel cannot directly hurt Harry using magic, but he has a gun and the reflexes of a martial artist, plus he has the strength of an adult, so despite being ill he can probably overpower Harry if Harry managed to grab the gun.

Harry could transfigure a knife, but this wouldn't work, mostly because it would take some time, Voldemort would notice, and shoot him. So, a possible solution: transfigure a knife, but with the electrons swapped out for muons. Muons have higher mass, so the muon orbitals are far smaller than electron orbitals, so the material will be denser, and I think also stronger. Because of this, the blade can be made much thinner, and so easily concealed, perhaps to the extent of being invisible. The blade could be attached to Harry's wand, which could serve as a handle. It can penetrate Quirrel's shields, because his magic cannot interact with an object Harry has transfigured.

This still leaves the problem of fighting an immortal dark wizard with hundreds of Horocruxes. The next time Voldemort attacks, he will have got Bellatrix to cast shielding spells over him, which can stop any transfigured objects Harry throws at him. But by that time, Harry can have the order of the phoenix fighting at his side.

I imagine Volde attacking Hogwarts again and again, and everytime he is killed, possessing a new body and returning to the fight minutes later, while dead teachers and aurors stay dead (or do they, given the stone?) meanwhile, Harry desperately tries to think of a plan before the defenders are slowly worn down.

Voldemort took Harry's wand away already.