-(I would later change my mind about which side of the tunnel is the correct one.)
-
-In Berkeley, I met some really interesting people who seemed quite similar to me along a lot of dimensions, but also very different along some other dimensions having to do with how they were currently living their life! (I see where the pattern-matching faculties in Yudkowsky's brain got that 20% figure from.) This prompted me to do a little bit more reading in some corners of the literature that I had certainly _heard of_, but hadn't already mastered and taken seriously in the previous twelve years of reading everything I could about sex and gender and transgender and feminism and evopsych. (Kay Brown's blog, [_On the Science of Changing Sex_](https://sillyolme.wordpress.com/), was especially helpful.)
-
-Between the reading, and a series of increasingly frustrating private conversations, I gradually became increasingly persuaded that Blanchard _wasn't_ dumb and wrong, that his taxonomy of male-to-female transsexualism is _basically_ correct, at least as a first approximation. So far this story has just been about _my_ experience, and not anyone's theory of transsexualism (which I had assumed for years couldn't possibly apply to me), so let me take a moment to explain the theory now.
-
-(With the caveated understanding that psychology is complicated and there's more to be said about what "as a first approximation" is even supposed to mean, but I need a few paragraphs to talk about the _simple_ version of the theory that makes _pretty good_ predictions on _average_, before I can elaborate on more complicated theories that might make even better predictions including on cases that diverge from average.)
-
-The idea is that male-to-female transsexualism isn't actually one phenomenon; it's two completely different phenomena that don't actually have anything to do with each other, except for the (perhaps) indicated treatment of HRT, surgery, and social transition. (Compare to how different medical conditions might happen to respond to the same drug.)
-
-In one taxon, the "early-onset" type, you have same-sex-attracted males who have just been extremely feminine (in social behavior, interests, _&c._) their entire lives, in a way that causes huge social problems for them—the far tail of effeminate gay men who end up fitting into Society better as straight women. _That's_ where the "woman trapped inside a man's body" trope comes from. [This one probably _is_ a brain-intersex condition.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3180619/)
-
-That story is pretty intuitive. Were an alien AI to be informed of the fact that, among humans, some fraction of males elect to undergo medical interventions to resememble females and aspire to be perceived as females socially, "brain-intersex condition such that they already behave like females" would probably be its top hypothesis for the cause of such behavior, just on priors.
-
-Suppose our alien AI were to be informed that many of the human males seeking to become female (as far as the technology can manage) do _not_ fit the clinical profile of the early-onset type—it looks like there's a separate "late-onset" type or types. If you [didn't have enough data to _prove_ anything, but you had to guess](https://www.lesswrong.com/posts/xTyuQ3cgsPjifr7oj/faster-than-science), what would be your _second_ hypothesis for how this behavior might arise?
-
-What's the _usual_ reason for males to be obsessed with female bodies?
-
-So, yeah. Basically, I think a _substantial majority_ of trans women under modern conditions in Western countries are, essentially, guys like me who were _less self-aware about what the thing actually is_.
-
-So, I realize this is an inflamatory and (far more importantly) _surprising_ claim. Obviously, I don't have introspective access into other people's minds. If someone claims to have an internal sense of her own gender that doesn't match her assigned sex at birth, on what evidence could I _possibly_ have the _astounding_ arrogance to reply, "No, I think you're really just a perverted male like me"?
+> Some people I usually respect for their willingness to publicly die on a hill of facts, now seem to be talking as if pronouns are facts, or as if who uses what bathroom is necessarily a factual statement about chromosomes. Come on, you know the distinction better than that!
+>
+> _Even if_ somebody went around saying, "I demand you call me 'she' and furthermore I claim to have two X chromosomes!", which none of my trans colleagues have ever said to me by the way, it still isn't a question-of-empirical-fact whether she should be called "she". It's an act.
+>
+> In saying this, I am not taking a stand for or against any Twitter policies. I am making a stand on a hill of meaning in defense of validity, about the distinction between what is and isn't a stand on a hill of facts in defense of truth.
+>
+> I will never stand against those who stand against lies. But changing your name, asking people to address you by a different pronoun, and getting sex reassignment surgery, Is. Not. Lying. You are _ontologically_ confused if you think those acts are false assertions.