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 85. The previous thread has long passed 500 comments. Comment in the 15th thread until you read chapter 85.
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, 15.
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Eliezer Yudkowsky which is not supposed to be publicly available (which includes public statements by Eliezer that have been retracted).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.
HPMOR is making me rethink human nature -- because of how people react to it. This is a story full of cunning disguises, and readers seem reluctant to see past those disguises. RL rkcerffrq chmmyrzrag ng ubj many readers took forever to decide Quirrell = Voldemort; I think I now know why.
I suggest that humans are instinctive "observation consequentialists." That is, we think someone is competent and good if the observed results of their actions are benign. We weigh what we observe much more strongly than what we merely deduce. If we personally see their actions work out well, we'll put aside a great deal of indirect evidence for their incompetence or vileness.
In HPMOR, Quirrell's directly observed actions are mostly associated with Harry getting to be more of what he thinks he wants. Even rescuing Bellatrix amounts to Harry getting to save a broken lovelorn creature in terms of what we directly observe. To believe Quirrell evil we have to bring in all kinds of expected consequences to weigh against those immediate positive observations.
Does the resistance to saying Quirrell=Voldemort maybe reflect a broader unwillingness to overlook what we directly witness in favor of ab... (read more)
Additionally, abusive relationships persist because the victim just can't help but forgive the abuser when the abuser is choosing to be nice. It can be hard to even believe your own memories of abuse when the abuser is smiling at you and giving you compliments.
I try to recall Quirrell murdering Rita Skeeter in cold blood every time I catch myself feeling like he's the good guy in the story.
I don't think anyone failed to see the signs that Quirrel is Voldemort in HPMOR. There are just those of us who believed it to be a Red Herring, because "that's how stories are supposed to work." If a potential solution to a mystery seems very obviously true in the first quarter of the story, then in most stories it's probably not the true solution. . Of course, at this point there's just no denying it.
I think the reason I was reluctant to accept that Quirrell is Voldemort is that Harry is a lot smarter than me and he trusted Quirrell.
That's actually a surprisingly good reason. In real life, the best rationalist you know is probably not a character in a story and feeling a sense of opposing pressure when you disagree with them is probably a pretty good idea.
Aumann's Agreement theorem is a neat true result about fictional entities. Its applicability to real entities is subjective, and based on how close you think the real entities are to the fictional entities. Increasing that distance makes AAT less relevant to how you live your life, and increasing that distance is what I mean by "update down your view of."
My feeling is that those entities are really distant, to the point where AAT should not seriously alter your beliefs. "I trusted X because Y trusted X" is a recipe for disaster if you trust Y because of different domain-specific competence, rather than their deep knowledge of X.
To be honest, I'm not even sure if Voldemort is Voldemort, in the sense of being the man behind the proverbial curtain here. Everything about him from the name up screams "assumed persona": he's far more theatrical a figure than a blood-purist demagogue would need to be, and some aspects of what he does even look counterproductive in that context. And while the canon Tom Riddle did all the same stuff and all for no particularly good reason, in the context of MoR I think we can assume that there's an agenda behind it.
I don't know for sure what that agenda is yet, but a good first step seems to be this question: why would you want to pose as a supervillain? As it happens, Eliezer has touched on that before.
Is it me, or does Harry's solution to this dilemma seem rather... half-assed? Ignoring potential the loss of effectiveness from his resolving to suddenly switch directions the first time things get bad, is he really going to know the first time someone dies as a result of his war? How will he know the difference? He's already gotten someone killed by his actions (Rita Skeeter, who he doesn't even know about) and another person gravely injured (that auror hurt by the rocket, who he doesn't know about but admittedly he thought the whole affair was a mistake afterward anyways). How about opportunity costs, the fact that if you handed me 100000 galleons demanding I save at least 10 lives with it I could hand you back 99000 in change. And that's before the "war" even "started"; hostilities are going to get more open and more direct from here. It's madness to think you can finish war, even a weird semi-geurella war like this, with zero casualties, or that you'll know about every one.
With the condition he gave himself anyone should be able to see that "failure" is a foregone conclusion. And there's very good odds he's not going to learn that what he's doing isn't working until he's racked up a far worse bodycount than one.
Not for any realistic sense of the phrase 'by his actions'. Quirrel squished Rita of his own accord for his own purposes and Harry's presence there is damn near irrelevant.
Morally he didn't do it, and maybe Quirrel even had a desire to kill her sitting on a back burner before Harry got involved, but her death was caused by her interaction with Harry. It is no stretch to say that there is at least one hypothetical sequence of actions Harry could have taken, even given knowledge at the time (not realizing she worked for Lucius or was an animagus) which would not have resulted in her death. Heck, doing nothing would have resulted in her not death.
That is the level of challenge Harry is taking upon himself. Not just to not kill anyone, not just to keep your hands clean, not just to save people when he can. He's declaring that if any innocent person anywhere dies and there's something he could have done differently to save them, that's his failure condition. You can't do that.
That said, I thought about it a few minutes more and it could be his resolution is really about knowing he doesn't know how bad the situation is. It's certainly possible to get through, say, a political power struggle with someone like Lord Malfoy without anyone getting killed. Harry considers it possible but doesn't yet believe that his opponent is Voldemort. If his opponent is Voldemort avoiding casualties is impossible. If his opponent is someone less evil (though still pretty nasty), and the scope of the conflict is much smaller, he might be able to pull it off.
It seems that he promised himself to stop trying to save everyone even if a minor character dies accidentally. In that case it wouldn't matter if he considered himself directly responsible for the death of Rita Skeeter.
Indeed. I don't see how he could manage not to compromise his 'every human life is precious' principle in a war. He's hesitating between two possible courses of action -- doing the math or playing Ghandi -- and neither seems like a satisfying choice. He really needs to become omnipotent or at least avoid the necessity of making such a choice.
Kinda-sort of.
Harry inadvertently gave Fred&George the idea of making up rumours about Quirrel (by telling them he doesn't like rumours, and asking them to leave Quirrel out of it). Which Rita Skeeter published.
And the prank he actually commissioned gave Quirrel a plausible explanation for Rita Skeeter's disappearance.
Morally Harry is not really responsible IMO. But causally, eh... her death would have probably not have happened if he hadn't talked to the Weasley twins about her.
Different language would be more appropriate to the context. Not because I have qualms with foul language, but because I actually got the impression that we were considering rape-ethics or philosophy in magic-mediated edge cases till I followed the link.
Okay, after thinking a few minutes about the Batman-Joker/where do you put Dark Wizards if you're determined not to use Dementors anymore problem...
Unbreakable Vow anyone? Just give Dark Wizards the option "either you take an Unbreakable Vow to never knowingly kill/torture/Imperio a human being ever again, nor to ever knowingly assist in such, or we just execute you right now".
I can think up of possible ways out of this meta-problem, in order to sustain the dilemma: Perhaps really powerful Dark Wizards require too vast a portion of magical power to sustain the vow. Perhaps there are dark rituals whereby using them, Dark Wizards can break out of even an (ill-named) Unbreakable Vow. Perhaps Dark Wizards tend to have made other rituals that already make them immune to Unbreakable Vows... Perhaps unbreakable vows need be really really specific in some weird manner like "I will not kill Bill Weasley", and "I will not kill Charlie Weasley" necessarily are two separate vows, so that "I will not kill any human" isn't enforceable...
But these are additional problems that are not yet mentioned/listed/foreshadowed in the story. Ugh, Unbreakable Vows seem something of a game breaker right now.
Sidenote: Whenever I think of something such, I worry that the author will think he'll have to rewrite/revise everything he had already planned, and that we'll never get an update again. Not my intention, I swear.
Unbreakable Vows are ridiculously broken, as Harry briefly observes in Ch. 74. They're even more ridiculous in fanfictions where people can just grab a wand and swear something on their life and magic and thereby create a magically binding vow. I had to nerf the hell out of their activation costs just to make the MoR-verse keep running. I can't depict a society with zero agency problems, a perfect public commitment process and an infinite trust engine unless the whole story is about that.
Frankly, we don't know enough about why Merlin did what he did to judge his action either way -- we don't know what danger was being foreseen, we don't know the limitations of his own powers. There's really no sense in criticizing him or praising him at this point of time - we lack crucial information.
Back up one step further: what evidence do we have that the Interdict actually exists? As opposed to, say, all powerful wizards simply having the same inclination toward secrecy and self-discovery. How did Quirrell put it...
I've never received the impression that wizards powerful enough to be subject to the Interdict have actually tried to circumvent it. If all known examples of written instructions for powerful spells were gibberish to begin with, would the world look any different? Not to mention, why would it be necessary to cast a huge mind-altering spell to make people do what they were inclined to do anyway?
You could just strip their magic.
If there exists any ritual that happens to permanently remove a portion of somebody's magic (Unbreakable Vow), then you could just repeat that ritual meaninglessly until that person was completely stripped of magic permanently. Or you could use other rituals which require similar permanent sacrifices until you achieve the same effect. Keeping a permanently magicless wizard imprisoned is a trivial task, and obviates the need for dementors.
Side Note: That's actually my pet theory on why Dementors as prison guards are acceptable to the public. It could be that governments used to use rituals to permanently strip prisoners of magic before imprisoning them. This would make them a revenue center instead of a funds sink. This would naturally encourage the magical government to find more and more excuses to imprison people, similar to how the 'tough on crime' cycle is accelerated by the for-profit prison systems in some places. A police state would be soon to follow. Then, after a cultural revolution, Dementors were adopted as the less evil option to house criminals. It also helps explain why so many rituals are banned. It's unlikely to be true in HPMoR, but it'd be a nice thought for another fanfic.
Another problem with this system is the permanence. People get sent to Azkaban for less than lifetime sentences, but if you use this to strip someone of magic it's gone forever. I suppose you could use degrees of magic removal as punishment but that seems hard to balance to different powerlevels of wizard.
Azkaban is commentary on Muggle prisons. I really hope people got that.
I've been reading about muggle prison conditions lately, and while I've understood that "prison conditions are terrible and torturing people is pointless etc" for both systems, it did not occur to me that you were making a commentary.
I'm going to go out on a limb and say that massive institutionalized rape is not beside the point.
Let's back up. Here is the history of this conversation:
Eliezer stated that "Azkaban is commentary on Muggle prisons".
JoshuaZ replied:
Notice what this says: Western European prisons are so good that Eliezer's commentary is really only about American prisons. (Also note the implication that the Muggle world is partitioned into two regions: Western Europe and the United States.)
3. I -- having become familiar with the similarities and differences between the U.S. and European criminal justice systems as a result of the Amanda Knox case -- disputed this, in a comment whose point was to argue that Western European prisons are not pleasant places. They are, in fact, really awful places. Yes, they may not be as bad as U.S. prisons, but they are still bad: places of torment, suffering and despair, despite... (read more)
Here's one more option:
e) People don't think enough about the level of brutality in prisons, and when they do think and talk about it they find it easier to applaud brutality; because anyone who spoke against it "would associate themselves with criminals, with weakness, with distasteful things that people would rather not think about", while speaking in its favor make you look tough on crime.
Given political discussions I've partaken in other forums, I know full well that whenever I condemned prison rape and suggested ways in which it might be reduced/prevented, the typical response was something to the effect of "Why do you love criminals so much?"
Well, they can die. I've seen nothing to suggest that Vows destroy Horcruxes.
I wonder if this fact is possibly relevant to some Cunning Plot in which - perhaps just as one among many positive results - Voldemort "died" and resurrected via horcrux in order to escape an Unbreakable Vow. I remember in response to chapter 84, people were wondering what, if Voldie's apparent death at Godric's Hollow was intentional, was in it for him.
I don't think it would be that easy. This is isomorphic to making wishes with an evil genie--or coding a human-level AI with a list of deontological commands. It could be done, but probably not in an EY fanfic and probably not without a skilled magical lawyer.
Yes they are— in the sense that they will have decades to spend ruminating on workarounds, experimenting, consulting with others. And when they find a solution the result is potentially an easily transmitted whole class compromise that frees them all at once.
Decades of dedicated human time, teams of humans, etc. are all forms of super-humanity. If you demanded that the same man hours be spent drafting the language as would be spent under its rule, then I'd agree that there was no differential advantage, but then it would be quite a challenge to write the rule.
Professor Quirinus Quirrell, HPMOR chapter 16. Unless he's wrong or lying, nonsapient animals are killed by it just fine. (In canon, doesn't the Fake Defence Professor Du Jour use it on a spider in, er, book 3 or thereabouts?)
Which reminds me of something. At (IIRC) that point in canon, the teacher who's introducing the Killing Curse says something like "It kills absolutely anything, every time. Only one person has ever survived one, and he's right here in this classroom". Here in HPMOR we have Quirrell introducing the Killing Curse in a classroom that's got Harry Potter in it, and everyone knows the story just as much as in canon, and he conspicuously doesn't make any such remark.
Maybe it's just coincidence. But (assuming, as is customary, that Q=V) it looks to me like another bit of evidence that in HPMOR what happened at Godric's Hollow was not that V. attempted to AK Harry and failed.
The grim version of an ongoing joke in some potter circles is that you could strap a bunch of puppies to your body and use them as living armor.
My favorite mental image is covering yourself in bees. What can I say? I'm a fan of Eddie Izzard being able to beat the Dark Lord.
Or simply that the “separate the soul from the body” is just a mumbo-jumbo explanation from people that believe in souls.
The introspective morality-dump chapters are not my favorites (eg. I find the 'imagine distant descendants' to be entirely useless intuitively, and would prefer versions of the update-now argument which are more like 'decide now how you would update your beliefs based on predictions you make now failing or succeeding, since once they actually fail or succeed you'll be embarrassed & biased'), but oh well let's begin analysis.
... (read more)But where would we get that many D-class personnel?
Hmm, reading your argument there I'm convinced. The tertiary nature of the sources claiming they had fire-making, combined with the well-documented preservation of fires are both pretty strong arguments.
That theory is possibly the most elaborate sour grapes I've ever seen.
The Parlevar were wiped out entirely. Both species of chimp have an ICUN Red List status of Endangered. I would suggest that being wiped out or nearly so by competitive pressure brought to bear by close genetic relatives who took up a different strategy is not a marker of a strategy being an "evolutionary success".
That sounds kinda awesome in a "specialization is for insects" way, but at the end of the eon you're still dying of appendicitis.
If your argument is simply "brutality acts as a deterrent," it's almost certainly true. If your argument is, "Therefore the current level of prison brutality is optimal," or, "we should be happy with prison brutality," the only counterargument needed is that nobody's provided any evidence at all for those positions.
But if either of those is the assertion, here are some counterarguments: 1) There is a countereffect: longer (and therefore more brutal) prison sentences increase rates of recidivism. 2) Flogging and caning are brutal deterrents. Many (most?) people will take a punishment of flogging over a punishment of a long prison sentence when given the choice. Ergo at least for many, prisons are more brutal than literal torture. 3) From a cursory glance at stats, violent crime rates don't seem to be much lower in countries with higher incidences of prison rape or prison hospitalizations. I would like to see some rigorous analysis on this. 4) Violent crime rates don't seem to be much higher in countries that employ flogging or caning. Again, not a rigorous statistical analysis, but weak evidence nonetheless. 5) Let's not forget that we're trying to mini... (read more)
Perhaps a better suggestion is that his "down time" involves synchronisation of his memories/program state between Horcruxes, and it gets worse the further Pioneer moves from Earth... Even with magic, there's no way round speed of light limits.
Quirrell probably wasn't expecting that, which could explain why his days as a Dark Lord are numbered (and also explains why he's desperate to train up Harry as a replacement, assuming his goal of uniting the wizarding world is sincere).
I'm also wondering if the 6 hour limit of Time-Turners is a crucial variable somehow, so that he could synch at distances up to 6 light-hours, but not otherwise. Does anyone know when the Pioneer 11 probe got more than 6 light-hours away from Earth? Was it around 1991/1992??
It's been on its way since April 1973 (for right about 39 years), so assuming a steady speed, it would've passed the six-hour limit roughly 19,5 years ago, or in late 1992.
Given that Pioneer fooled around in the Solar System for a while, making flybys of Jupiter and Saturn, our calculation should be a bit different. 1992 is a useful lower bound, which we arrived at by calculating what would happen if Pioneer took a straight path out into interstellar space. In fact, it flew by Saturn in September 1979. A bit of trigonometry tells me that if it left Saturn in a straight line tangent to that planet's orbit, it would probably reach the critical distance some time between '95 and '97, depending on Earth's own position in its orbit. This rough map seems to suggest that it did take that approximate path, but it's hardly accurate. If Pioneer skirted closer to the sun again, inside Saturn's orbit on it's way out then the critical distance comes later, but if it veered away harder then it comes earlier.
I had typed my calculations up, but I lost them just now when I accidentally pressed the back button. Hell's bells and buckets of blood.
Anyway, basically what this tells us is that Quirrel probably has at least a few years of grace before Pioneer gets too far away, if that is in fact what's going on. I think there's a fair likelihood that this theory is correct, but given what I've said here, I don't think the timing of the Pioneer's critical distance should be counted as strong evidence in favour of that.
From Chapter 61:
If information cannot travel back more than six hours, and a "soul" (stored on a Horcrux) is information (as Quirrell describes it), then it is a reasonable guess that the soul cannot travel over a spatial separation of more than 6 light-hours. Further than that, and it seems the soul parts must fall out of synch, though exactly what happens then is anyone's guess. Does Quirrell die? Are there two separate Quirrells, one stranded permanently on Pioneer, and the other on Earth? Can the one on Earth be killed, even if the one on Pioneer is never destroyed?
This does seem to be a constraint that exclusively affects the time-turners. Otherwise prophesies wouldn't be possible. It also seems like it's an artificial rule rather than a deep law of magic because after the Stanford Prison experiment, Bones tells Dumbledore that she has information from four hours in the future and asks whether he'd like to know it. That there is relevant information from four hours in the future is information from the future - she would not have said that if it were otherwise, so it seems there must be exemptions of that kind.
Alternative hypothesis: prophesies are jive, and Eliezer didn't think of the other thing.
More then 6 hours in what reference frame?
If Time Turners went backwards in intervals of 81 minutes, instead of an hour, that'd fit with the "you fell to the center of the earth and oscillated back" method of inertial time travel.
First, imagine yourself in a spaceship far away from any gravitational sources. If your rockets are off, objects inside the ship left at rest relative to it will stay at rest. In this situation, your ship is in an inertial reference frame, so called because in it the law of inertia is valid. (By contrast, if your rockets are on, objects left at rest will start accelerating towards the back wall, unless there is some countervailing force acting on them).
Now imagine your spaceship close to Earth, within its gravitational field. What is an inertial frame now? Not the situation of the ship at rest relative to Earth: in this situation, objects will accelerate ("fall", as we usually say) towards the bottom of the ship. The ship is in an inertial frame only if it is freely falling towards Earth[1], like an elevator when the cable breaks: then, objects left at rest inside it will stay at rest relative to it absent countervailing forces (because they will be "falling" at the same universal rate g = 9.8 m/s^2).
So a frame accelerating towards Earth with g is an inertial frame. If we abstract away all other forces that will come into play when the ship crashes hitting the E... (read more)
I am very saddened by this. Chapter 7 was what really hooked me into the story. Half of it was Harry's incredible "This is why science ROCKS" speech, which is still one of my most favorite monologues ever. And half of it is the pure emotional shock of hearing an 11-year-old boy casually say he plans to rape a 10-year-old girl. It had an immediate physical effect on me, and the after-effects lingered for the rest of the day. The fact that it came so out of the blue in such an unexpected setting... it was damned effective. I will be very sad to see it go.
This raises a question for me - I know of at least one 11 year old reading this story. Sometimes kids read things above their grade level, and are exposed to concepts earlier than usual (I suspect that happened to almost everyone on LW). So... is HPMoR intended primarily for adult... (read more)
Strongly agree with this.
I have no problem with making Draco's character more consistent, and if Eliezer honestly feels that that should mean removing or altering his casual dehumanisation of peasants, so be it.
But I urge Eliezer to seriously ask himself, with all his strength as a rationalist, about this and any other changes: "Would this be sacrificing the quality of the narrative for the sake of making a very, very mature story superficially more marketable to children?"
And yes, I feel those apparently charged words are wholly appropriate: removing a rape reference is just a terribly superficial way of making the story 'kid-friendly', because it isn't kid-friendly in much, much deeper ways. If a kid isn't ready to know what 'rape' means, would you want him to read Chapter 82? Or the Bellatrix chapters? If anything the rape reference in Ch. 7 works as an excellent gatekeeper, filtering the audience before the really disturbing stuff begins to kick in.
Does anyone else think it plausible that Harry's third last name, "Verres," comes from Mr. Verres in the webcomic El Goonish Shive? EGS Mr. Verres is a government scientist with a bespectacled semi-magical mad scientist son, and pretty much everything else in MOR is a shout-out.
Accidental, but I'm willing to claim credit for it. It started as a portmanteau of Vassar and Herreshoff.
The stated function of a prison is to imprison (i.e. detain). If the function of the prison was to get people physically hurt, then the state would have official torturers to brutalize people to such exact specifications as their convictions by the courts (e.g. official sentences would state things like "ten years in prison, plus three beatings and one anal rape per month", and the state would hire official rapists for the purpose).
If brutality was supposed to be part of a prison's specification, then we would have the responsibility of quantifying how much brutality is deserved for each crime. (the question you asked "How brutal should they be?" doesn't only work for people criticizing their current brutality, but also for the people who support it, you see)
But the delegation of this task randomly to convicts speaks of the same hypocrisy that Quirrel mocks in the chapters in question.
I think the downvotes come from you making a claim about the quoted text that doesn't seem particularly well supported. I would think that what you quoted is evidence against his dark side being Voldemort (since it emphasizes that they aren't really separate entities, just separate mind states), though I do think Harry is a Horcrux.
I think your edit is a bit annoying in tone. (Complaining about downvotes and groupthink + only having -1 karma + calling the site bizarre and unhealthy + unnecessary sarcasm)
In canon, Bellatrix Lestrange is married to Rodolphus Lestrange and does not have a child. In MoR, Bellatrix Black is unmarried, but has a child- Lesath Lestrange, the acknowledged bastard of Rastaban Lestrange. (In canon Rodolphus' brother's name was Rabastan, but I'm assuming that's a typo.) Lesath is currently a fifth year, so he was born in either '75 or '76. Bellatrix was actively leading attacks as a Death Eater in '71. Presumably a pregnancy would require some amount of maternity leave from the whole 'going on raids, fighting Aurors' thing.
So. Why would Voldemort allow / order one of his most powerful servants to have a child?
Um. Maybe he was experimenting with the powerful magic protection that a mother's love grants her child?
Oh, Harry. Who have you just doomed with your folly?
Harry realizes the error, and yet continues to generalize from fictional morality.
Which error does he realize? So far as I can tell, he sees a failure mode on both sides, and so chooses the best compromise he can come up with.
Two illustrations:
For commentary, we turn to Bismarck: "A fool learns from his mistakes, but a truly wise man learns from the mistakes of others."
... (read more)Because he has no intention of letting that happen.
Quirrell's tale of "I played a hero, but it didn't get me political power" doesn't hold up. The "lonely superhero" is just as much a mere storytelling convention as the "zero-casualties superhero". Either Quirrell is leaving something out, or the author is ignoring real-world politics for storytelling convenience.
In real life, successfully fighting societally recognized enemies gets you all kinds of political opportunity. Look at American Presidents Eisenhower, Grant, Taylor, Jackson, Harrison, and Washington. This is true in nondemocracies too: consider the Duke of Wellington, the Duke of Marlborough, or Sir Francis Drake.
What gets you loneliness and isolation is being a pioneer.
In real life, heroes go unrewarded exactly and only when their enemies aren't yet regarded as enemies by the rest of society.
The socially isolating thing isn't fighting Nazis when you're an American, it's fighting Nazis when you're a German. Being a reformer is isolating.
"The lonely superhero" is just as much a mere literary convention as "the zero-casualties superhero".
Of course, "the lonely superhero" reflects an underlying truth. The real brave... (read more)
Good points, but reading carefully, it seems Riddle's hero persona wasn't a pure "lonely hero." Rather:
Also:
However:
In particular, Quirrell's Yule speech reminded Bones of one or more speeches hero-Riddle apparently gave, which she describes as "castigating the previous generation for their disunity against the Death Eaters."
So taken together, it seems hero-Riddle was widely liked, and could have bee... (read more)
Well, yeah, it got Quirrel's "hero" political opportunity too. He was invited back to the fold of the Most Ancient House, and after the death of everyone else there, he would have wielded the vote in the Wizengamot. But they didn't sufficiently obey him as leader.
Alcibiades was accused and recalled by the Atheneans while on the expedition he had been advocating. Pausanias (victor of Plataies) and Miltiades (victor of Marathon) barely lasted a year after their famous victories, before getting accused of treason.
Knowing something of Ancient Greek history, and how they tended to treat all their most successful generals, it seemed very believable to me.
Successful generals are threats. You also see this in Byzantine history (inspiring a similar situation in Asimov's Foundation universe), and Chinese history too: a successful general like Belisarius becomes a threat to the throne and may be sabotaged in various ways. Belisarius was lucky: all his emperor did was short-change him and set him impossible missions. Chinese generals might just see themselves executed.
No, this one is 11pm, the previous one was 2am.
You should get over that (the former). You'll end up hating people simply for not being utterly naive. Getting along with people is necessary if you wish to achieve anything.
Yes. It is a kind of power that people are willing to grant you and that, as far as ways to grab power go, has rather good externalities. Start using it.
Both good and bad manners do that. The bad ones make it easier.
You are wrong. I haven't followed closely enough to know whether the other guy was right but your own behavior in your comments is more than sufficient to get downvoted according to local norms - and you'd be shunned or shamed in most social environments where you tried to pull this crap.
Neither of these gives a licence for rudeness. Having a variety of people argue against a position is not a reason that defense of that position should be less polite. As to downvoting- you yourself said that people should care less about downvoting, so maybe do so?
In general, you need to think carefully about what your goals are. If your goals are to convince people then being polite helps. If your goal is to convince bystanders of your position or something similar then being polite still helps, because people are more inclined to take a position seriously when the one arguing for it is calm and polite. At a completely selfish level, being rude makes it harder to accept that one is wrong, due to cognitive dissonance issues and invested-effort/sunk cost issues. So if one wants to become less wrong one should try to be polite for purely selfish reasons.
I am not downvoting this comment of yours, but here's a piece of advice: attacking the whole forum over a single downvote is probably the best way to ensure you'll get more downvotes.
If you want to get fewer downvotes, best way possible is to complain less about the occasional downvotes you will get. All that a downvote means is that one person out of the hundreds that visit the site didn't like your comment. But when you attack a whole community over what a single member of it did, well... that'll cause more people to think that such an attack merits a few more downvotes.
Rowling made a mistake and gave Dudley a PS in 1993.
I am totally using that as my rejoinder there - "If Dudley can get a Playstation in 1993, clearly Playstations are timeless in canon."
Wait, you can violate the six-hour limit on backward movement of information with Playstations?
Does that mean the Department of Mysteries has a Playstation department?
plots evilly
No, no, the sand in the Time-Turners' hourglasses is made of ground-up Playstations.
This is at least rude. Downvoted without having to read more. Learn about the principle of charity.
Illusion of transparency.
Unnecessarily insulting. What do you mean on the object-level, and how could you say it in a way that is not rude?
No. You can have true conclusions from a fallacious argument or false premises, or true beliefs following from faulty reasoning. And for example, precisely 100% is overconfident that the sun will rise tomorrow, even if it turns out to be correct.
Again, illusion of transparency. If you say the community, and the community means "the sum of [all] the individuals" here, then it is not obvious that you do not mean "each and every one of the people who visit this site".
'Groupthink' is a highly technical term, and shouldn't be bandied about. If you're going to assert tha... (read more)
I'm not sure how my mind dug this up, but way back in Chapter 17, Harry visits Dumbledore's office and is overloaded with bizarreness: Dumbledore sets fire to a chicken, he gives him his father's rock, he gives him his mother's potions textbook which contains a terrible secret... but one of these things is not like the others. Dumbledore gave Harry his father's rock, with instructions that Harry satisfied by creating a magical ring and wearing it at all times.
Blur out all the hilarious details for a minute, and that scene is: Dumbledore made Harry create a magical ring and wear it at all times, and distracted him so well that he never thought about what the ring does. My hypothesis is that some aspect of magic is governed by an XP-like mechanic, and that sustained transfiguration (especially of large masses) is an unusually effective way of gaining magical power. Dumbledore wants Harry to exploit this, but he considers it a major secret, so he substituted a nonsensical explanation and prepared a collection of very flashy distractions to keep it from being questioned. He might've even left the real explanation in his pensieve, so that he wouldn't have to lie. Read in this light, the scene makes a whole lot more sense. It explains Harry's anomalous magical power. It explains Dumbledore's anomalous magical power.
It is also the only way Dumbledore could truly mark someone as an equal.
Hasn't Harry basically signed up to be a Dark Lord in 85, at least by the Sorting Hat's standards?
Compare the talk with the Sorting Hat:
Oh god, I have this mental image of Harry standing next to a blood soaked guillotine insisting that he is a Light Lord!
Idea: someone should compile a list of times when Quirrell says "Interesting" or is otherwise surprised by Harry.
He does it a lot, and we might see an interesting pattern emerge.
Hurting people is bad.
I guess this has come up before, but I take it the reason to be Voldemort is that as soon as muggles get load of magic, they'll figure out how become magical, transmute 3 stage thermonuclear devices from concrete, apparate them over cities, etc. So magic means the total removal of all technological or economic restrictions on nuclear warfare. And time travel.
So if you figured the muggles would discover the magical world pretty soon, and if you wanted there to be any people at all in the future, you'd have to make the society of magical knowledge completely closed. This means taking over, at least, the magical world and probably the muggle one too. And in order to prevent anyone from seeing magic as technology and doing productive research on it, you'd have to make it completely scary, so that their fear and moral hatred would override their ability to study it proficiently.
If that's true, then muggle science is similar a soon-to-be-uncontrollable AI (it is at least by many orders of magnitude a better optimizing system then the magical world's own research efforts), and Voldemort is a last ditch effort at reboxing. If that's right, it seems hard to argue with Voldemort.
I think people in the Less Wrong community are a little too fast to analogize any existential threat to the threat of rogue AI. The threat of people blowing up the world with nuclear weapons seems a lot more analogous to the threat of people blowing up the world with nuclear weapons.
I was thinking about it earlier and Harry has massively underranked the utility of Horcruxes. If one person must die so that a different person can live 100K+ more years then that is an incredibly desirable tradeoff from an impartial utilitarian standpoint and everyone should be doing this. You could even choose to murder only old and dying people so that there would be almost no loss of net time that people spend alive. He dismissed it way too quickly during his conversation with Dumbledore.
I wonder if burning Narcissa Malfoy to death would count, or if it had too many positive externalities. (I'm less and less sure how to model Dumbledore as MoR proceeds, particularly since even if he's "supposed to be good", Eliezer is writing him and Eliezer is some sort of consequentialist; I wouldn't want to rule out the possibility that Dumbledore deemed himself indispensable and his soul's contiguousness dispensable to the war effort.)
Utilitarianism has to be equally-blooded for all outcomes, but this can also be accomplished by being hot-blooded about everything. Instead of shrugging and not caring about the pain and two-year loss, you can mourn it while also grinning and clapping your hands and jumping around shouting for joy at the perspective of someone gaining so much life.
Just by reading your comment before the Edits, I thought that you're probably correct, Harry seems confused about his dark side and that (to me) also seems to be Bayesian evidence for Harry being at least partially a horcrux. So to me, it seems like you're qualitatively right, although the importance of this piece of evidence can be discussed about. The downvotes could simply be bad luck, and I'd have expected this comment to go back at zero and beyond in a few hours.
However, posing yourself as a victim of this sites supposed groupthinking and attacking us using sarcasm makes things worse. I'm not surprised that in this form, the comment got to -6 points. These sorts of attacks (posing oneself as the victim and then vigorously attacking) are neither liked here nor in most other places, I'm afraid.
Why should the time of an ominous decision be so relevant to seers? Even if the consequences of the decision have a big impact on the future, that future already was the future. It's not like there is a default future before you make your decision and a different future afterwards, your decision itself would already be a part of the future of any earlier point in time. From a many worlds perspective you might have several different possible futures so your overall prospect of the future might significantly change after an important branching, but Harry's decision doesn't seem particularly influenced by recent random chance; it seems unlikely that from the perspective of 6 hours ago most future Harrys would make a completely different decision.
The clock is a gift from Dumbledore. On the one hand, it could be recording. On the other hand it could be transmitting. On the gripping hand, Dumbledore has a Time Turner.
If Dumbledore wanted to assure that any time he was the best pressure-release for a prophesy that pressure was released as easily and discretely as possible and less likely to be overheard, he would want to make it easy for the Prophesy Force to get that information to him.
So he gives her a clock and tells her to ask it for the time each time she wakes up in the middle of the night. The clock tells Dumbledore. Dumbledore gets invisible. Then it's just a jump to the left and he receives any prophesy intended for him.
That's so obvious in retrospect, and Dumbledore is so meddling, that now I don't think he's allowed not to have thought of that.
Hmm. On first reading, I just took the premonitions as being an indicator of how close we are to the apocalypse, not necessarily being caused by Harry's resolution. And yet you're right; both the premonitions we've seen so far immediately followed Harry's resolving something.
The first resolution was Harry saying that he would destroy Azkaban, whether it meant ruling Britain or summoning arcane magics to blow the building up, and that those who support Azkaban are the villains.
This resolution was Harry saying that if his war caused a single death, he would start killing villains as fast as possible.
So if these are all related, I guess all Quirrell needs to do is make Harry remember both those resolutions after someone dies and while he's in his Dark Side, and then sit back and watch as Harry exterminates 90% of the British population.
Eliezer seems to be taking a page from Alicorn's book. In Luminosity Alice is plagued by differing visions as Bella constantly changes her mind about her future, and then the actual future snaps into place when a final choice is made.
That's how it is in the canon Twilight (Eclipse).
Essentially? It has to happen at some point along the timeline, and whatever engine runs magic finds it simplest to give visions simultaneous to the decisions that cause them. (Or at least, contribute in some major way to them.)
Or, in other words, enforced narrative causality.
I think HPMoR has colored my thinking about scholarship and I'm really happy about this. Recently I have been reading the literature on mathematics education, and I find myself thinking of what I read as books that can give me power, like uncovering principles of magic and becoming capable of greater battle magic. I'm basically doing what Dumbledore and Riddle did and it works in real life.
There's an argument (first advanced by Beccaria in the late 18th century) that it matters more that punishment be swift and certain, than that it be harsh. If people don't really believe a punishment is likely to happen to them, it won't deter reliably. Human cognitive biases being what they are, we might be better served trying to make punishment visible, rather than horrifying. Azkaban, being remote and unpleasant to think about, is perhaps less effective than some punishment that would be constantly in sight. Having the convicted criminal's wand broken. say.
Beccaria puts it much better than I could, so I'll just refer you to his essay on the topic: http://en.wikisource.org/wiki/An_Essay_on_Crimes_and_Punishments/Chapter_XXVII
In a society with veritaserum, legilimency and assorted other magic you'd think it would be straightforward to establish guilt or innocence in the vast majority of cases.
I've never had the opportunity to respond to a single comment with both of these, but if you haven't yet, you should check out Well-kept gardens die of pacifism and Why our kind can't cooperate. (the latter is less directly relevant)
If anything, there should be less rudeness and more downvoting on this site. For this community, rude disagreement and lack of downvoting would still be the default if we weren't actively suppressing it.
Politeness is useful. Rudeness is the way to mind-killing. If you don't want people to engage with your ideas rationally, be rude to them - that strategy works very well on humans.
BTW - this was the accepted figure as of 1991, but molecular evidence suggests 62,000-75,000 years. Which makes Harry's point even more strongly: it took a long time for humans as we know them to invent what we think of as basic stuff.
At a cursory glace the date you cite seems to be for the time the population they are descended from split from African populations, not for when they arrived in Australia. Genetic evidence cannot show where your ancestors lived, only how they were related to other populations (which might imply things about where they lived provided you already know that for the other populations)
Isn't Harry a little young to have played Fate/Stay Night, both in the sense of it being a Japanese porno game not suitable for 11-year-olds and it not having been made yet when the story is set?
EDIT: Clearly this is intended as a hint that he has the time-traveling adult Voldemort's memories implanted in him.
Those are very valid objections, but since the phrase "great works of literature like Hamlet or Fate/Stay Night" constantly causes hilarious overreactions whenever I link Three Worlds Collide around, I'm entirely supportive of Eliezer taking liberties for this purpose.
Eliezer isn't bothering to consider publication dates, and has ignored them in the past- eg Barbour's The End of Time wasn't published until 1999, yet Harry still knows timeless physics.
According to canon, the original PlayStation was available in 1993. So if certain electronic media are available earlier in the MoR universe, it's only a slight embellishment of an existing canon discrepancy.
Personally, I find shout-outs less jarring than straight out references to Harry having consumed fiction that shouldn't exist yet. The Tragedy of Light isn't Death Note, it's The Tragedy of Light, even if the real life inspiration is obviously Death Note.
By Word of God, we know that horcruxes exist in the HPMoR universe. It seems like by now we ought to be able to start figuring out what a horcrux is.
In Canon, a horcrux is a fragment of a soul. But it stands to reason that this will not be the full answer in MoR, as it's a fairly serious violation of the author's beliefs. So if we're to disregard supernatural and religious concepts, the obvious first idea is that horcruxes are storage media for some portion of a brain's data.
The problem is that most of what makes up a brain has been strongly hinted to not be the answer, either. It certainly looks like Harry is a horcrux in this universe, and Harry already thought of that possibility in different terms, yet the Sorting Hat says with 100% confidence that there is no extra "mind, intelligence, memory, personality, or feelings" in Harry's head. And I'm disregarding out of hand any clever-schoolboy loopholes like "The horcrux is Harry's foot!"
What is left of a brain, if mind and intelligence and memory and personality and feelings (and a soul) are eliminated? It would be fitting, though a bit precious, if the answer were somehow "rationality", if you could ... (read more)
The exact phrasing of the Sorting Hat's statement was as follows:
Now, anyone that's read the sort of fairytale where riddles are important should immediately be able to come up with a half-dozen loopholes in that, but I think we can dismiss most of them out of hand given that the Sorting Hat has no particular incentive to be misleading. The most promising option that remains, by my reading, is that there's nothing separate about the Horcrux contents for the Hat to key off of -- they effectively are Harry, or part of him. He's probably tapping that part of himself when he has his Dark Side episodes, at the very least, but I don't think that's the full extent of the Horcrux's influence: at various points he asks himself or people around him why he doesn't think like other children, and narrative parsimony points rather strongly to th... (read more)
Voldemort's Killing Curse worked. Lily's son is dead. The sacrifice magic hurt Voldemort and created a new person in Harry's body from Voldemort's mind, who we've been reading about ever since. The hat doesn't notice this because it never met the previous Harry. Voldemort knows all this and is treating Harry as his mind-child.
So Harry 1.0 was overwritten by Tom Riddle 2.0, but this time Tom got a loving family?
Hi, I'm Omega. You have a choice between one person being tortured or 3^^^3 people getting dustspecks in their eyes. Also, if you respond with profanity, an additional 5^^^^^^5 +1 people will be tortured, and two puppies and a kitten will be drowned, and Busy Beaver(3^^^3) fruit flies will have their wings torn off.
Eliezer,
It might be useful to put a notice at the bottom of the chapter about new entries taking a while. All previous chapters have a similar note about the next update, and the lack of one on this chapter may imply the ending of the fic to some (especially those that don't read the discussions).
I don't think so- the passage implied that other muggleborns might know it as well:
Plus I get the feeling that it's beyond Harry's own capabilities, since his original thoughts/ideas are also (generally) Eliezer's original thoughts/ideas
You sure can! It's a bit hard on the complexity, but probably less so than spontaneous collapse.
there are a bunch of different versions, the most obvious (but not only) class consists of proceeding the simulation as if time travel didn't exist then pruning paradoxical branches retroactively. There's tweaks and hacks needed to figure out how that actually works with interference, and to fix the problem of any branch where time travel is invented at all losing all it's measure in effect acting as a probability pump preventing it, but you're smarter than me and can probably work out better versions.
Just think about it for 5 minutes. ;p
Semi-accurate? She blatantly makes things up and spins things in order to smear her subjects. You could as well call an article "semi-accurate" which accuses someone of being a child molester, when the reality is that they do, in fact, spend time around children.
Or there's a feedback loop, where someone downvotes you, you then insult people, then more people downvote you for the insults, then you insult people some more for those downvotes, which causes even more people to downvote you... and so forth.
In an attempt to find Quirrell's motives, I have listed the evidence I have about him, and now have a theory I have not seen on LessWrong or anywhere. I did it mostly mentally, but I'll try to put down all the evidence I took into account as unbiasedly as possible. I assume you know Quirrell = Voldemorte = Tom Riddle.
-Quirrell said Harry's wish was impossible. The wish was that Quirrell come back again the next year as the Defense Professor at Hogwarts. He also burned the paper on which the wish was written and he did not tell the audience what it was. If ... (read more)
To be honest, I'm not convinced that it isn't true even in first-world countries. Solve rates for murders in the US appear to be around 66% as of 2007. I haven't directly been able to dig up solve rates for crimes in general, but clearance rates (the rate of crimes prosecuted to crimes reported) are available, and are well under 50% for pretty much everything except murder. Most prosecuted crimes appear to result in convictions, but this still says to me that TheOtherDave's got it right, at least in a US context and assuming that most reports aren't fri... (read more)
Okay, seriously, how strong do you think the groupthink effect could possibly be on the question of whether Harry's dark side is a piece of Voldemort's soul in HPMOR? For the record I think you were probably downvoted for claiming that something was "clearly" implied when I (and so presumably others) can't see how it's implied at all (and I still can't see it, having read the comment which is apparently supposed to make it clear, and which wasn't, incidentally, linked to in the great-grandparent), and then downvoted further when you decided to insult everyone.
FWIW, when I see someone making really bad comments, I tend to look at their other comments to see if they're also downvote-worthy, since it's a source of low-hanging fruit for moderation.
Not quite. I think the point is that because we aren't perfect Bayesian reasoners, we neglect to update on some of the available evidence. But getting into the right frame of mind can help you avoid that. (Cf. the reasoning behind Harry's decision to tell McGonagall about the Parseltongue message from the sorting hat.)
The heuristic Harry is using here, is to imagine a future test he thinks would be decisive, and ask himself what outcome he expects from that test. That's a way to "unlock" and find o... (read more)
Have you tried it on a micro-scale? I employ a modified version of this technique as a constant motivation tool. (Eg, I don't feel like going to the gym and prefer to read things on the internet, so I query my future self from 4 hours ahead and future self from a couple days ahead for each Everett branch of action and poll my imagination of their opinions. Invariably the 4 possible-future me's all outvote present me and force me to the gym.)
I find it very good for peer pressuring myself with my future selves, but it only works on things I cognitively know the 'right' answer to yet am emotionally unconvinced by. It also helps exceptionally well for hyperbolic discounting. I think that Harry is using a similar tool to line up his emotions and motivations with what he knows cognitively and to avoid the shortsighted path (Kill 2/3rds of the Wizengamot) in lieu of the path he'd previously decided on.
What is the Anansi the Spider quote from? Anansi the Spider is a character from mythology and folklore, so it's not as obvious as the others... is it Neil Gaiman, or some other source?
It may be para- or misphrased. The author told us at some point that HJPEV quotes from the author's memory while Hermione quotes from reality.
I was re-listening to the podcast of Chapter 20 (Bayes's Theorem) when I was struck by an idea. It builds on another idea I heard in this same forum. The original idea was that Quirrel had Horcruxed the Pioneer plaque and that, due to the nature of magic, his Horcrux passing beyond a distance of 6 light hours would lead to his death due to a limitation on magic's ability to affect things more than 6 hours into the past - which would be needed for faster than light communications.
Having now re-listened to that chapter, I've picked up some new clues. Harry h... (read more)
Something is definitely funny with Goyle. He's able to do martial arts, is extremely good with a broomstick, and doesn't trust Draco when Draco lies to him. At first, my interpretation was just that Goyle was much more capable in this version. That's still a possibility, but I feel like if that were the case then maybe Crabbe also would have been made more capable. I feel as though Goyle will do something important soon, definitely.
I even briefly entertained the possibility that Goyle was a Mary Sue, for about ten seconds, but that idea doesn't have anything to recommend it besides the humor of it.
He also spent a long time with the sorting hat.
Chapter 9
I think it's pretty clear he got that information, along with many of his other dark secrets, from the Basalisk.
Has there been any serious discussion of the implications of portraits? I couldn't find any with some cursory googling, but I'll be really surprised if it hasn't been discussed here yet. I can't entirely remember which of these things are canon and which are various bits of fanfiction, but:
I think that Salazar's Serpent was a trap Tom Riddle fell into. It was a Langford Basilisk Horcrux, like the book Ginny got in the original timeline, so When Tom Riddle read out the information embedded, he was possessed by Salazar Slytherin. That's why nppbeqvat gb Ibyqrzbeg/Evqqyr/Fnynmne vg frrzf gb unir whfg orra n terng frecrag, abg n onfvyvfx, juvpu vf whfg jung ur jbhyq fnl. Guvf nyfb rkcynvaf gur qnzntrq guvaxvat Uneel frrf.
This might well explain Harry as well, since in OT Voldemort had a giant serpent hanging around. He might not have had one in... (read more)
I just thought of something.
When Quirrell shows Harry the stars in outer space he's probably getting the images from his probe-Horcrux.
I believe you are incorrectly modelling the way Harry thinks and misunderstand the implications of the words Harry has uttered. The implicit prediction is conditional. On, for example, not catastrophic failure and ext... (read more)
Wondering how Dumbledore knew Harry was planning on reformulated Quidditch. Seems possible that he was just on the platform.
On a related note, it occurs to me that we should just assume there's two Dumbledores running around any time anything important happens. No immediate consequences leap out at me, though =/
Nope, ritual magic = permanent sacrifice.
This as well as the distant descendants part seems to draw on Robin's near vs. far theory.
I was a bit surprised to not see the "many who die deserve life" quote from Tolkien, but perhaps that one is about deciding to kill prisoners or not.
Andromeda is not the closest galaxy. The closest currently known galaxy is the Canis Major Dwarf Galaxy but this wasn't known until after the story took place. However, others were known at about this time such as the Large Magellanic Cloud which is only visible from the Southern Hemisphere but has been known for centuries, or Draco Dwarf which you can see with a good telescope in the Northern Hemisphere. Andromeda is however the only one that is easily visible and very large in the Northern Hemisphere.
Re: revisions
... (read more)Ng gigebcrf, rl fnlf, "V gubhtug crbcyr jrer tbvat gb trg "gur cybg" sebz Pu. 1-3, cbffvoyl Pu. 1, naq guvf jnf gur Vyyhfvba bs Genafcnerapl", naq yngre "Ru, lbh'yy frr jung V'z gnyxvat nobhg nsgre lbh ernq gur svany nep naq gura ernq Puncgre 1 ntnva."
What would a hypothesis about the end of the story look like which uses only information from chapter 1?
Claim: Harry's war with Voldemort will destroy the world. Support: In Chapter 1, Petunia says about Lily's reasons for not making her pretty, "And Lily would tell me no, a... (read more)
This may have been addressed already, but why doesn't Harry suspect at this point that Quirrell is Voldemort, or at least working for Voldemort?
This is especially puzzling after we get to hear Harry's thoughts on what happened to Hermione in 85.
Now, maybe I'm suffering from obvious-in-retrospect syndrome here, given that I did not realize Quirrell was Voldemort until V ernq Ryvrmre'f fvapr-ergenpgrq fgngrzrag gung Dhveeryy vf Ibyqrzbeg. But that was before the Stanford Prison Experiment arc. Relevant facts in that and the Taboo Tradeoffs arc:
I think you're missing the mundane explanation. Harry really likes Quirrell. He's the person he most relates with in the world; he's the person he looks up to; he's the smart/strong/cool teacher Harry wants to be when he grows up.
Any person, especially a child, will gladly ignore and forgive a million counter-indications as long as they really like the person.
What motive would Harry expect Voldemort to have? As far as I can recall, he doesn't know about the components required for the spell to revive someone kept from death by horcruxes, and Bellatrix is not a very capable servant for the time being, and he doesn't believe Voldemort cared about her in any case. Quirrell, on the other hand, has already claimed a selfish motive that he personally has for freeing Bellatrix that would not apply to Voldemort.
Keep in mind that for Harry, the potential hypothesis space is huge. Quirrell might secretly be Rudolph Wizencamp in disguise. Don't know who Rudolph Wizencamp is? Well, neither does Harry, he's only lived in the wizarding world for a few months after all. We can reason by dramatic convention and conservation of detail, but for Harry, the list of all possibilities raised by the facts about the wizarding world that he's aware of is far from exhaustive.
Dumbledore told Harry in the "Today your war has begun" speech that Bellatrix was one of three things Voldemort needed to return as strong as he was before.
Was it this bit?
Earlier in this very same chapter, Harry tells Quirrell that he can't imagine Quirrell hurting someone unless he means to. (This was in context of their discussion of the Gryffindor who cast a dark curse without knowing what it did.)
So we can assume that either Quirrell isn't as precise as Harry thinks and accidentally hurt Harry, or that he's exactly as precise as Harry thinks and took the blood on purpose.