-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.
+> Using language in a way _you_ dislike, openly and explicitly and with public focus on the language and its meaning, is not lying. The proposition you claim false (chromosomes?) is not what the speech is meant to convey—and this is known to everyone involved, it is not a secret.
+
+—[repeatedly](https://twitter.com/ESYudkowsky/status/1067198993485058048):
+
+> You're mistaken about what the word means to you, I demonstrate thus: https://en.wikipedia.org/wiki/XX_male_syndrome
+>
+> But even ignoring that, you're not standing in defense of truth if you insist on a word, brought explicitly into question, being used with some particular meaning.
+
+Dear reader, this is the moment where I _flipped the fuck out_. Let me explain.
+
+This "hill of meaning in defense of validity" proclamation was just such a striking contrast to the Eliezer Yudkowsky I remembered—the Eliezer Yudkowsky whom I had variously described as having "taught me everything I know" and "rewritten my personality over the internet"—who didn't hesitate to criticize uses of language that he thought were failing to carve reality at the joints, even going so far as to [call them "wrong"](https://www.lesswrong.com/posts/FaJaCgqBKphrDzDSj/37-ways-that-words-can-be-wrong):
+
+> [S]aying "There's no way my choice of X can be 'wrong'" is nearly always an error in practice, whatever the theory. You can always be wrong. Even when it's theoretically impossible to be wrong, you can still be wrong. There is never a Get-Out-Of-Jail-Free card for anything you do. That's life.
+
+[Similarly](https://www.lesswrong.com/posts/d5NyJ2Lf6N22AD9PB/where-to-draw-the-boundary):
+
+> Once upon a time it was thought that the word "fish" included dolphins. Now you could play the oh-so-clever arguer, and say, "The list: {Salmon, guppies, sharks, dolphins, trout} is just a list—you can't say that a list is _wrong_. I can prove in set theory that this list exists. So my definition of _fish_, which is simply this extensional list, cannot possibly be 'wrong' as you claim."
+>
+> Or you could stop playing nitwit games and admit that dolphins don't belong on the fish list.
+>
+> You come up with a list of things that feel similar, and take a guess at why this is so. But when you finally discover what they really have in common, it may turn out that your guess was wrong. It may even turn out that your list was wrong.
+>
+> You cannot hide behind a comforting shield of correct-by-definition. Both extensional definitions and intensional definitions can be wrong, can fail to carve reality at the joints.