By that point, the story will have propagated far enough that people probably won't believe her even if she denies it, and it'll just make her look crazy.

Plus trying to reveal that Harry was lying will damage his reputation and sabotage his efforts to cure death etc. just as they're gearing up.

For one, it would mean he could never talk about his work "as himself", e.g. on Facebook or Reddit, unless he wanted to set up and constantly use dummy accounts, which is both time-consuming and sometimes in violation of site T&Cs.

But then, Dumbledore seemed to think, after listening to all the prophecies, that the end of the world was inevitable, and that the optimal goal was not about preventing it.

It's also the only explanation we have for Voldemort's assertion in 108 (I think) that he has further use for "her, or rather a certain part of her".

A part surely overwhelmed by the legacy he left behind as Voldemort, which includes lots of orphans and lots of people whose own positive legacies he cut short by killing them.

If you're going to count legacy as part of one's self, then anyone who kills people for any reason is going to end up in the karmic negative very very quickly, because they are taking away other people's legacies, and their potential children's, and their potential children's, etc.

Voldemort knows that Harry understands game theory, and has no incentive to drop his wand if he ends up dead and cannot save everyone anyway. If he orders Harry to drop his wand, Harry might refuse, and then he has to kill him before being able to extract information out of him.

There are two possible answers to this argument.

• 1) If Harry is refusing to give up his wand, this suggests that Harry thinks that with the wand he has a non-0% chance of escape. In that event, getting the wand off him takes priority over questioning.
• 2) Expelliarmus. One of Voldemort's 36 followers must know it, and if not, frankly Voldemort could probably teach them on the spot.

Voldemort knows Harry has knowledge he has not, but this doesn't necessarily mean Harry knows spells or has the magical power required to cast strong enough spells to harm him.

"Power he knows not" strongly implies the ability to do or achieve something, rather than abstract knowledge with no immediate applications.

The problem is that there doesn't seem to be a plausible excuse for the wand thing except "Voldemort was careless", and carelessness under such conditions simply hasn't been part of his character at any point until now.

Word of God says that the plot of HPMOR was set in stone since the beginning. If there was some better reason for Harry to face the Final Exam with a wand in his hand, Eliezer would have known about it from the start, and could have seeded all the necessary foreshadowing for it way in advance.

Last time we heard, Voldemort had sent her to "a safe place to recover her strength". We do not know whether this is before or after he removed her arm, or whether she survived the process. Presumably, without her arm she no longer bore a Dark Mark, and hence wasn't summoned to the graveyard.

I guess I misread your tone. The way you put "sometimes that involves people dying" immediately after "you rejoice" made it seem like the former was an afterthought.

You're right, "sociopathic" was perhaps a poor choice of words. "Cheerfully unempathic" would have been a better way of saying what I was thinking.