-At least, a _pedagogy_ mistake. I of course agree that pronoun usage conventions, and conventions about who uses what bathroom, are not, themselves, factual assertions about sex chromosomes in particular. But it's _bizarre_ to condescendingly point this out as if it were the crux of contemporary trans-rights debates.
+At least, a _pedagogy_ mistake. If Yudkowsky _just_ wanted to make a politically neutral technical point about the difference between fact-claims and policy claims _without_ "picking a side" in the broader cultural war dispute, these Tweets did a very poor job of it. I of course agree that pronoun usage conventions, and conventions about who uses what bathroom, are not, themselves, factual assertions about sex chromosomes in particular. I'm not saying that Yudkowsky made a false statement there. Rather, I'm saying that it's _bizarre_ to condescendingly point this out _as if it were the crux of contemporary trans-rights debates_. Conservatives and gender-critical feminists _know_ that trans-rights advocates aren't falsely claiming that trans women have XX chromosomes. But the question of what categories epistemically "carve reality at the joints", is _not unrelated_ to the question of which categories to use in policy decisions: the _function_ of sex-segrated bathrooms is to protect females from males, where "females" and "males" are natural clusters in configuration space that it makes sense to want words to refer to.