Second impressions: more sex than I'd prefer. I'd call this a humanist (sapient-ist?) fic rather than a rationalist one - the difficulty of writing (what I'd call) rationalist fiction is that the audience can't just be told "and then Sherlock Holmes solved the mystery," Holmes has to actually go about it in a reasonable way.
I can live with 'humanist' (or 'personist', or etc), though I really was trying to aim both for 'rationalist', and to describe how Missy actually went about doing things.
As for sex - I tried to have a discreet fade-to-black for any actually adult content, while still having the protagonist in a relationship. How would you suggest, or have suggested, I manage that differently? (Or are you referring to something else?)
For the past two months, I've been writing, and posting, roughly two thousand words a day of "Myou've Gotta be Kidding Me", a story set in a "My Little Pony: Friendship is Magic" fanfic universe, "Chess Game of the Gods". Outside of the sheer NaNoWriMo-like exercise of pushing out near-daily chapters, I've also been trying to keep in mind the various principles I've learned from Yudkowsky and LessWrong, and to try to present them in a way that people who like reading MLP fanfics might be able to appreciate.
I've just come to something of a minor climax with chapter 60, and while I'll definitely be continuing the story, this seems like a good time to mention it here, for whatever feedback and constructive criticism anyone cares to offer.