For what it’s worth, I too was a little surprised and disappointed by the quality of the prose, until I double-checked the url and realised this was more like “a design doc artifact hosted on gwern.net” than “an article posted on gwern.net”.

Yeah, I do these sometimes. Like https://gwern.net/doc/design/2026-09-17-claude51fable-thepur... or https://gwern.net/doc/reinforcement-learning/safe/2026-08-16... or https://gwern.net/doc/ai/nn/transformer/gpt/claude/4/2026-02... . Usually they aren't playable, though, although I have some prototypes of _Goodhart's Garden_ I need to playtest a bit for feedback.