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Harry Potter and the Methods of Rationality

Book by Eliezer Yudkowsky · 20 quotes · Hpmor, Science, Harry Potter

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Harry Potter and the Methods of Rationality Quotes

“The Headmaster told Professor Flitwick that this was, indeed, a secret and delicate matter of which he had already been informed, and that he did not think pressing it at this time would help me or anyone. Professor Flitwick started to say something about the Headmaster's usual plotting going much too far, and I had to interrupt at that point and explain that it had been my own idea and not anything the Headmaster forced me into, so Professor Flitwick spun around and started lecturing me, and the Headmaster interrupted him and said that as the Boy-Who-Lived I was doomed to have weird and dangerous adventures so I was safer if I got into them on purpose instead of waiting for them to happen by accident, and that was when Professor Flitwick threw up his little hands and started shrieking in a high-pitched voice at both of us about how he didn't care what we were cooking up together, but this wasn't ever to happen again for as long as I was in Ravenclaw House or he would have me thrown out and I could go to Gryffindor which was where all this Dumbledoring belonged -”

Harry PotterDumbledoreMethods Of RationalityFlitwick
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“There's history books you haven't read," Harry said quietly. "There's books you haven't read yet, Hermione, and they might give you a sense of perspective. A few centuries earlier - I think it was definitely still around in the seventeenth century - it was a popular village entertainment to take a wicker basket, or a bundle, with a dozen live cats in it, and -" "Stop," she said. "- roast it over a bonfire. Just a regular celebration. Good clean fun. And I'll give them this, it was cleaner fun than burning women they thought were witches. Because the way people are built, Hermione, the way people are built to feel inside -" Harry put a hand over his own heart, in the anatomically correct position, then paused and moved his hand up to point toward his head at around the ear level, "- is that they hurt when they see their friends hurting. Someone inside their circle of concern, a member of their own tribe. That feeling has an off-switch, an off-switch labeled 'enemy' or 'foreigner' or sometimes just 'stranger'. That's how people are, if they don't learn otherwise. So, no, it does not indicate that Draco Malfoy was inhuman or even unusually evil, if he grew up believing that it was fun to hurt his enemies -”

EvilCultural Relativism
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“Dinner passed with surprising rapidity. Harry tried to sample at least a little of all the weird new foods he saw. His curiosity couldn't stand the thought of not knowing how something tasted. Thank goodness this wasn't a restaurant where you had to order only one thing and you never found out what all the other things on the menu tasted like. Harry hated that, it was like a torture chamber for anyone with a spark of curiosity: Find out about only one of the mysteries on this list, ha ha ha!”

Food
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“Because the way people are built, Hermione, the way people are built to feel inside -" Harry put a hand over his own heart, in the anatomically correct position, then paused and moved his hand up to point toward his head at around the ear level, "- is that they hurt when they see their friends hurting. Someone inside their circle of concern, a member of their own tribe. That feeling has an off-switch, an off-switch labeled 'enemy' or 'foreigner' or sometimes just 'stranger'. That's how people are, if they don't learn otherwise.”

PsychologyMoralityRationality
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“You can only arrive at mastery by practicing the techniques you have learned, facing challenges and apprehending them, using to the fullest the tools you have been taught, until they shatter in your hands and you are left in the midst of wreckage absolute... I cannot create masters. I have never known how to create masters. Go, then, and fail... You have been shaped into something that may emerge from the wreckage, determined to remake your Art. I cannot create masters, but if you had not been taught, your chances would be less. The higher road begins after the Art seems to fail you; though the reality will be that it was you who failed your Art.”

FailureMastery
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“Hermione," Harry said seriously, as he started to dig down into the red-velvet pouch again, "don't punish yourself when a bright idea doesn't work out. You've got to go through a lot of flawed ideas to find one that might work. And if you send your brain negative feedback by frowning when you think of a flawed idea, instead of realizing that idea-suggesting is good behavior by your brain to be encouraged, pretty soon you won't think of any ideas at all." Harry put down two heart-shaped chocolates beside the book. "Here, have another chocolate. Besides the one from earlier, I mean. This one is to reinforce your brain for generating a good candidate strategy.”

Positive Reinforcement
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“Wow," the empty air finally said. "Wow. That puts a pretty different perspective on things, I have to say. I'm going to remember this the next time I feel an impulse to blame myself for something. Neville, the term in the literature for this is 'egocentric bias', it means that you experience everything about your own life but you don't get to experience everything else that happens in the world. There was way, way more going on than you running in front of me. You're going to spend weeks remembering that thing you did there for six seconds, I can tell, but nobody else is going to bother thinking about it. Other people spend a lot less time thinking about your past mistakes than you do, just because you're not the center of their worlds. I guarantee to you that nobody except you has even considered blaming Neville Longbottom for what happened to Hermione. Not for a fraction of a second. You are being, if you will pardon the phrase, a silly-dilly. Now shut up and say goodbye.”

PsychologyEgocentric Bias
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“If you want to win this argument with Dad, look in chapter two of the first book of the Feynman Lectures on Physics. There's a quote there about how philosophers say a great deal about what science absolutely requires, and it is all wrong, because the only rule in science is that the final arbiter is observation - that you just have to look at the world and report what you see. Um... off the top of my head I can't think of where to find something about how it's an ideal of science to settle things by experiment instead of arguments -”

SciencePhysicsObservationRichard FeynmanFeynman
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“Aside from helping people with their homework, or anything else they needed, she really didn't know how to meet people. She didn't feel like she was a shy person. She thought of herself as a take-charge sort of girl. And yet, somehow, if there wasn't some request along the lines of "I can't remember how to do long division" then it was just too awkward to go up to someone and say... what? She'd never been able to figure out what. And there didn't seem to be a standard information sheet, which was ridiculous. The whole business of meeting people had never seemed sensible to her. Why did she have to take all the responsibility herself when there were two people involved? Why didn't adults ever help? She wished some other girl would just walk up to her and say, "Hermione, the teacher told me to be friends with you".”

ShynessShy People
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“Then you get the wrong answer and you can't go to the Moon that way! Nature isn't a person, you can't trick them into believing something else, if you try to tell the Moon it's made of cheese you can argue for days and it won't change the Moon! What you're talking about is rationalization, like starting with a sheet of paper, moving straight down to the bottom line, using ink to write 'and therefore, the Moon is made of cheese', and then moving back up to write all sorts of clever arguments above. But either the Moon is made of cheese or it isn't. The moment you wrote the bottom line, it was already true or already false. Whether or not the whole sheet of paper ends up with the right conclusion or the wrong conclusion is fixed the instant you write down the bottom line.”

ScienceHarry PotterRationalityMethods Of Rationality
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“I'm not stupid, Mr. Potter. What's the real reason you didn't tell me, and what were you actually doing with Mr. Malfoy?" "Ah. Well..." Harry broke eye contact with her, and looked down at the library table. "Draco Malfoy told the Aurors under Veritaserum that he wanted to know if he could beat me, so he challenged me to a duel to test it empirically. Those were his exact words according to the transcript." "Right," Harry said, still not meeting her eyes. "Hermione Granger. Of course she'll remember the exact wording. It doesn't matter if she's chained to her chair, on trial for murder in front of the entire Wizengamot -" "What were you really doing with Draco Malfoy?" Harry winced, and said, "Probably not quite what you're thinking, but..." The horror scaled and scaled within her, and finally broke loose. "You were doing SCIENCE with him? " "Well -" "You were doing SCIENCE with him? You were supposed to be doing science with ME!”

Science
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