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Nornagest comments on Harry Potter and the Methods of Rationality discussion thread, July 2014, chapter 102 - Less Wrong Discussion
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I mean that if you have two carbon atoms floating around in the universe, and the next instance you swap their locations but keep everything else the same, there is no scientific way in which you could say that anything has changed.
Combine this with humans being just a collection of atoms, and you have no meaningful way to say that an identical copy of you is "not really you". Also, 'continuity of consciousness' is just a specific sensation that this specific clump of atoms has at each point in time, except for all the times when it does not exist because the clump is 'sleeping'. So Quirrel's objection seems to have no merit (could be I'm missing something though).
Yes, there is an insight to be had there, I will acknowledge that much.
However, to say that the opposite of a friendly AI is a paper clip maximiser is stupid. The opposite of an AI which wants to help you is very obviously an AI which wants to hurt you. Which is why the whole "AK version 2 riddle" just doesn't work. The Patronus goes from "not thinking about death" (version 1) to "Valuing life over death" (version 2). The killing curse goes from "valuing death over life" (version 1) to "not caring about life" (version 2). You can visualise the whole thing as a line measuring just the one integer, namely "life-death preference":
Value death over life (-1) ---- don't think about it either way (0) ----- Value life over death (+1)
The patronus gets a boost by moving from 0 to +1. The killing curse gets a boost by moving from -1 to 0. That makes no sense. Why would the killing curse, which is powered by the exact opposite of the patronus, receive a boost in power by moving in the same direct as the Patronus which values life over death?
Only fake wisdom can get ridiculous results like this.
I parsed it as follows: the Killing Curse isn't powered by death in the same way that the Patronus draws power from life, but it does require the caster not to value the life of an opponent. Hatred enables this, but it's limited: it has to be intense, sustained hatred, and probably only hatred of a certain kind, since it takes some doing for neurologically typical humans to hate someone enough to literally want them dead. Indifference to life works just as well and lacks the limitations, but that's probably an option generally available only to, shall we say, a certain unusual personality type.
Ideology might interact with this in interesting ways, though. I don't know whether Death Eaters would count as being motivated by hate or indifference by the standards of the spell; my model of J.K. Rowling says "hate", while my model of Eliezer says "indifference".
Yes, that ideology is precisely what bothers me. Eliezer has a bone to pick with death so he declares death to be the ultimate enemy. Dementors now represent death instead of depression, patronus now uses life magic, and a spell that is based on hate is now based on emptiness. It's all twisted to make it fit the theme, and it feels forced. Especially when there's a riddle and the answer is 'Eliezer's password'.
I don't know if MoR influenced the movies, but Deathly Hallows 1 or 2 showed an image of Death looking like the movie's image of Dementors. It seems to me like a natural inference.
Isn't that because the only static element of a dementor's appearance is its black, concealing cloak, and that overlaps neatly with the Grim Reaper portrayal of death?
You say that like Rowling had no choice but to use this well-known image for Dementors. Also, they're supposed to look somewhat like corpses underneath.
I increasingly feel like I've lost track of what you're trying to argue here. Would you mind recapitulating it for me?
What are you trying to argue in the great-grandparent? What am I supposed to take from the black cloaks, aside from the fact that it makes Dementors look like Death? I can imagine that perhaps Rowling chose this appearance because it allowed a frightening reveal later on. But that reveal uses the words "rotting", "death" and "deathly". On our first sight of a Dementor she also compares it to something "dead" and "decayed". She did this because fear of death seems near as universal as you can get. Dementors' most feared ability, destruction of the soul, has the same explanation.
The parallels that MoR!Harry sees are real, and they exist because death is (widely held to be) bad.