Realistic worldbuilding is a difficult art: unable to model what someone else would do except by the ["empathic inference"](https://www.lesswrong.com/posts/9fpWoXpNv83BAHJdc/the-comedy-of-behaviorism) of imagining oneself in that position, authors tend to embarrass themselves writing [alleged aliens or AIs that _just happen_ act like humans](https://www.lesswrong.com/posts/Zkzzjg3h7hW5Z36hK/humans-in-funny-suits), or allegedly foreign cultures that _just happen_ to share all of the idiosyncratic taboos of the author's own culture. The manifestations of this can be very subtle, even to authors who know about the trap.
In [_Planecrash_](https://www.projectlawful.com/board_sections/703), a collaborative roleplaying fiction principally by Iarwain (a pen name of Eliezer Yudkowsky) and Lintamande, our protagonist, Keltham, hails from [dath ilan](https://www.lesswrong.com/tag/dath-ilan), a more smarter, more rational, and better-coordinated alternate version of Earth. Keltham has somehow survived his apparent death and woken up in the fantasy world of [Golarion](https://pathfinderwiki.com/wiki/Golarion), and sets about uplifting the natives using knowledge from his more advanced civilization.
Realistic worldbuilding is a difficult art: unable to model what someone else would do except by the ["empathic inference"](https://www.lesswrong.com/posts/9fpWoXpNv83BAHJdc/the-comedy-of-behaviorism) of imagining oneself in that position, authors tend to embarrass themselves writing [alleged aliens or AIs that _just happen_ act like humans](https://www.lesswrong.com/posts/Zkzzjg3h7hW5Z36hK/humans-in-funny-suits), or allegedly foreign cultures that _just happen_ to share all of the idiosyncratic taboos of the author's own culture. The manifestations of this can be very subtle, even to authors who know about the trap.
In [_Planecrash_](https://www.projectlawful.com/board_sections/703), a collaborative roleplaying fiction principally by Iarwain (a pen name of Eliezer Yudkowsky) and Lintamande, our protagonist, Keltham, hails from [dath ilan](https://www.lesswrong.com/tag/dath-ilan), a more smarter, more rational, and better-coordinated alternate version of Earth. Keltham has somehow survived his apparent death and woken up in the fantasy world of [Golarion](https://pathfinderwiki.com/wiki/Golarion), and sets about uplifting the natives using knowledge from his more advanced civilization.