This is Part 2 of the discussion of Alicorn's Twilight fanfic Luminosity.
LATE BREAKING EDIT: Part 3 exists now, so new comment threads should be started there rather than here.
In the vein of the Harry Potter and the Methods of Rationality discussion threads this is the place to discuss anything relating to Alicorn's Twilight fanfic Luminosity. The fanfic is also archived on Alicorn's own website.
Here is Part 1 of the discussion. Previous discussion is hidden so deeply within the first Methods of Rationality thread that it's difficult to find even if you already know it exists.
Similar to how Eliezer's fanfic popularizes material from his sequences Alicorn is using the insights from her Luminosity sequence.
The fic is really really good but there is a twist part way through that makes the fic even more worth reading than it already was, but that makes it hard to talk about because to even ask if someone is twist-aware with any specific hints is difficult. The twist is in the latter half of the story. If you are certainly not post-twist and want to save the surprise, then you should stop reading here and fall back to Part 1 discussion or to the fic itself.
If you think you're pretty sure you are post-twist and are safe to read the rest of this, try reading this rot13'ed hint and see if what you've read matches this high level description of the twist...
Rqjneq unf qvfpbirerq gur frperg gung Vfnoryyn jnf xrrcvat sebz uvz "sbe uvf bja tbbq" bhg bs srne bs Neb ernqvat Rqjneq'f zvaq. Va gur nsgrezngu, fbzrguvat unf punatrq nobhg gurve eryngvbafuvc gung znl unir pnhfrq lbh gb pel sbe n juvyr, naq juvpu znlor urycf gb rzbgvbanyyl qevir ubzr gur pbzovarq zrffntr bs YJ'f negvpyrf nobhg "fbzrguvat gb cebgrpg" naq "ernfba nf n zrzrgvp vzzhar qvfbeqre" naq gur jnl gurl pna fvzhygnarbhfyl nccyl gb crbcyr jub unir abguvat zber va gur jbeyq guna fbzr fvatyr crefba jub gurl ybir.
If the answer to the hint is obvious, then just to be sure that there is not a double illusion of transparency at work, here is the cutoff point spelled out explicitly:
Gur phgbss cbvag sbe cbfgvat urer vf gung lbh unir ernq hc gb puncgre svsgl svir (va gur snasvpgvba irefvba) be puncgre gjragl rvtug ba Nyvpbea'f jrofvgr jurer Rqjneq jnf cebonoyl vapvarengrq, Vfnoryyn fheivirf na nggrzcgrq vapvarengvba, naq fur unf gb ortha gb jbex bhg jung gb qb jvgu gur jerpxntr bs gur erfg bs ure "rgreany" yvsr.
Chapter 17, I'm really liking it too.
When Elspeth was captured and basically "changed into a new character" with a few finger wiggles, I was horrified (and wondering what these stories had to do with rationality any more) but as "Magic" is fleshed out I'm seeing a lot of interesting resonance between Elspeth's power and social complexities that can come up for people who are compulsively honest in ways that might damage their relationships sometimes.
Chelsea works as a sort of a personification of a whole suite of cognitive biases documented in Influence. Reading with that as a subtext ramps up the scariness and interestingness in some ways, but it also almost gives me sympathy for Chelsea. Most of the biases in "Influence" are intelligible as honestly useful heuristics for organizing a small cohesive group that shares wisdom and resources.
What kind of healthy emotional life could Chelsea possibly have had, given the world her power puts literally "at her fingertips"? She doesn't just have the ability to manipulate, but to detect people's attitudes toward her in a way that is tied into her emotional reward centers. She's probably an emotional wirehead, with the parts of her brain that were intended for primate social bonding having been hijacked by a much simpler stimulus-reward behavior-loop instead, and then reinforced for two millennia while excluding other more complicated ways of getting positive emotional feedback that involve actually positive social coordination. Tragedy!
Also, opportunity: I think Elspeth may be the first person on the planet (other than Bella, but Bella has never been around to interact with Chelsea) who could possibly teach Chelsea what "those parts" of her brain are "actually for", and neither is likely to do that because Chelsea is working at cross-purposes to both of them.