If knowledge of the True Patronus can prevent people from being able to cast Patronus 1.0, is there a way for knowledge of the True Patronus to harm Voldemort?

... Huh.

... Is it just me, or is Harry Potter now in the same room as the Elder Wand and the Philosopher's Stone?

... Well, there's a great big Dark Lord in the way, but.

Betting isn't my thing. I know it's popular among many here, but I'm just on the forums to discuss HPMOR with other fans.

There are other possibilities, like Harry is seeing what he desires, but I have to propose some pretty awkward complications to make that work. I think Izeinwinter is very likely correct.

Dumbledore isn't in the mirror. Harry and Voldemort are. The trap triggered, stuck them in a time-dilated mirror plane. Which is, of course, the only reasonable way to deal with an immortal serial killer. This even counts as fulfilling the darn prophecy, doesn't it? Definitely if Dumbledore can extract Harry, because that way naught but a remnant will exist in the same world, and yes, it does count as Harry defeating him. He talked him into stepping into that trap, after all. Bravo.

Given EY's noticeable penchant for echoing canon, I have a general guess as to what Quirrell's plans for the schoolmaster are...

But unless you bought Draco Malfoy's latest theory that Professor Sprout had been assigning and grading less homework around the time of Hermione being framed for attempted murder, thereby proving that Professor Sprout had been spending her time setting it up, the truth remained unfound.

So Imperiused-Sprout is Hat and Cloak?

"Harry had refreshed the Transfigurations he was maintaining, both the tiny jewel in the ring on his hand and the other one."

Hermione, probably.

The play on words with the title of the chapter (Riddles and Answers) and the final reveal was neat. Harry might be a copy of Quirrell!mort who's had his memory erased (rememberall,) and good ol' Quirrell!mort needs Harry to get the stone because...?

I'm still really curious how the Deathly Hallows are going to tie into this.

Also, where the hell is Cedric Diggory? Will it be another situation like what happened with the troll? The spare gets killed, or Harry is the spare, and is found defective?

See also Gwern's belief tags.

The man sitting on the grass fell over, his head impacting the ground with a light thud. At the same time the sense of doom diminished so sharply that Harry leapt to his feet, his heart suddenly in his throat.

Doesn't look too good for Quirrell.

In the future, poverty reduction EAs might also focus on economic, political, or research-infrastructure changes that might achieve poverty reduction, global health, and educational improvements more indirectly, as when Chinese economic reforms lifted hundreds of millions out of poverty.

I'd like to see more discussion of economic growth and effective altruism. Something that can lift hundreds of millions of people out of poverty is something that should definitely be investigated. (See also Lant Pritchett's distinction between linear and transformative philanthropy.)