-In a world where we don't _have_ magical perfect sex-change technology, but we _do_ have hormone replacement therapy and various surgical methods, you actually end up with _four_ clusters: females (F), males (M), masculinized females a.k.a. trans men (FtM), and feminized males a.k.a. trans women (MtF). I _don't_ have a "clean" philosophical answer as to in what contexts one should prefer to use a {F, MtF}/{M, FtM} category system (treating trans people as their social gender) rather than a {F, FtM}/{M, MtF} system (considering trans people as their [developmental sex](/2019/Sep/terminology-proposal-developmental-sex/)), because that's a complicated semi-empirical, semi-value question about which aspects of reality are most relevant to what you're trying think about in that context. But I do need _the language with which to write this paragraph_, which is about _modeling reality_, and not about marginalization or respect.
+Straight men who fantasize about being women do not particularly resemble actual women! We just—don't? This seems kind of obvious, really? _Telling the difference between fantasy and reality_ is kind of an important life skill?! Notwithstanding that some males might want to make use of medical interventions like surgery and hormone replacement therapy to become facsimiles of women as far as our existing technology can manage, and that a free and enlightened transhumanist Society should support that as an option—and notwithstanding that _she_ is obviously the correct pronoun for people who _look_ like women—it's probably going to be harder for people to figure out what the optimal decisions are if no one is ever allowed to use language like "actual women" that clearly distinguishes the original thing from imperfect facsimiles?!