+[^planecrash-title]: The title is a pun, referring to both the airplane crash leading to Keltham's death in dath ilan, and how his resurrection in Golarion collides dath ilan with [the "planes" of existence of the _Pathfinder_ universe](https://pathfinderwiki.com/wiki/Great_Beyond).
+
+[^medianworlds]: You might think that the thought experiment of imagining what someone's medianworld is like would only be interesting for people who are "weird" in our own world, thinking that our world is a medianworld for people who are normal in our world. But [in high-dimensional spaces, _most_ of the probability-mass is concentrated in a "shell" some distance around the mode](/2021/May/sexual-dimorphism-in-the-sequences-in-relation-to-my-gender-problems/#typical-point), because even though the per-unit-hypervolume probability _density_ is greatest at the mode, there's vastly _more_ hypervolume in the space around it. The upshot is that typical people are atypical along _some_ dimensions, so normies can play the medianworld game, too.
+
+(I asked Anna how Yudkowsky could stand the Glowfic people. She said she thought Eliezer could barely stand anyone. That makes sense, I said.)
+
+Everyone in dath ilan receives rationality training from childhood, but knowledge and training deemed psychologically hazardous to the general population is safeguarded by an order of [Keepers of Highly Unpleasant Things it is Sometimes Necessary to Know](https://www.glowfic.com/replies/1612937#reply-1612937). AGI research takes place in a secret underground city; the culture of the masses is carefully steered away from ordinary people thinking about AI.
+
+Something that annoyed me about the portrayal of dath ilan was their incredibly casual attitude towards hiding information for some alleged greater good, seemingly without considering that [there are benefits and not just costs to the public knowing things](http://benjaminrosshoffman.com/humility-argument-honesty/).
+
+You can, of course, make up any number of sensible [Watsonian](https://tvtropes.org/pmwiki/pmwiki.php/Main/WatsonianVersusDoylist) rationales for this. (For example, a world with much smarter people is more "volatile"; with more ways to convert knowledge into danger, maybe you _need_ more censorship just to hold Society together.)
+
+I'm more preoccupied by a [Doylistic](https://tvtropes.org/pmwiki/pmwiki.php/Main/WatsonianVersusDoylist) interpretation—that dath ilan's obsessive secret-keeping reflects something deep about how the Yudkowsky of the current year relates to information, in contrast to the Yudkowsky who wrote the Sequences. The Sequences had encouraged you—yes, _you_, the reader—to be as rational as possible. In contrast, the dath ilan mythos seems to portray advanced rationality as dangerous knowledge that people need to be protected from.
+
+Someone at the 2021 Event Horizon Independence Day party had told me that I had been misinterpreting the "Speak the truth, even if your voice trembles" slogan from the Sequences. I had interpreted the slogan as suggesting the importance of speaking the truth _to other people_ (which I think is what "speaking" is usually about), but my interlocutor said it was about, for example, being able to speak the truth aloud in your own bedroom, to yourself. I think some textual evidence for my interpretation can be found in Daria's ending to ["A Fable of Science and Politics"](https://www.lesswrong.com/posts/6hfGNLf4Hg5DXqJCF/a-fable-of-science-and-politics):
+
+> Daria, once Green, tried to breathe amid the ashes of her world. _I will not flinch_, Daria told herself, _I will not look away_. She had been Green all her life, and now she must be Blue. Her friends, her family, would turn from her. _Speak the truth, even if your voice trembles_, her father had told her; but her father was dead now, and her mother would never understand. Daria stared down the calm blue gaze of the sky, trying to accept it, and finally her breathing quietened. _I was wrong_, she said to herself mournfully; _it's not so complicated, after all_. She would find new friends, and perhaps her family would forgive her ... or, she wondered with a tinge of hope, rise to this same test, standing underneath this same sky? "The sky is blue," Daria said experimentally, and nothing dire happened to her; but she couldn't bring herself to smile. Daria the Blue exhaled sadly, and went back into the world, wondering what she would say.