+As a good cis ally, you're told that trans people know who they are and you need to respect that [on pain of being responsible for someone's suicide](/2018/Jan/dont-negotiate-with-terrorist-memeplexes/). While politically convenient for people who have _already_ transitioned and don't want anyone second-guessing their identity, I think this view is actually false. Humans don't have an atomic "gender identity" that they just _know_, which has no particular properties other than it not being recognized by others being worse than death. Rather, there are a variety of reasons why someone might feel sad about being the sex that they are, and wish they could be the other sex instead, which is called "gender dysphoria."
+
+Fortunately, our Society has interventions available to approximate changing sex as best we can with existing technology: you can get hormone replacement therapy (HRT), genital surgery, ask people to call you by a different name, ask people to refer to you with different pronouns, get new clothes, get other relevant cosmetic surgeries, _&c._ In principle, it's possible to pick and choose some of these interventions piecemeal—[I actually tried just HRT for five months in 2017](http://unremediatedgender.space/tag/hrt-diary/)—but it's more common for people to "transition", to undergo a correlated _bundle_ of these interventions to approximate a sex change.
+
+On this view, there's not a pre-existing fact of the matter as to whether someone "is trans" as an atomic identity. Rather, gender-dysphoric people have [the option to _become_ trans](https://thingofthings.wordpress.com/2016/04/11/1327/) by means of undergoing the bundle of interventions that constitute transitioning, if they think it will make their life better. But in order for a gender-dysphoric person to _decide_ whether transitioning is a good idea with benefits that exceed the costs, they need _factually accurate information_ about the nature of their dysphoria and each of the component interventions.
+
+If people in a position of intellectual authority provide _inaccurate_ information about transitioning interventions, that's making the lives of gender-dysphoric people worse, because agents with less accurate information make worse decisions (in expectation): if you have the facts wrong, you might wrongly avoid an intervention that would have benefitted you, or wrongly undergo an intevention that harms you.
+
+For example, I think my five-month HRT experiment was a _good_ decision—I benefitted from the experience and I'm very glad I did it, even though I didn't end up staying on HRT long term. The benefits (satisfied curiosity about the experience, breast tissue) exceeded the costs (a small insurance co-pay, sitting through some gatekeeping sessions, the inconvenience of [wearing a patch](/2017/Jan/hormones-day-33/) or [taking a pill](/2017/Jul/whats-my-motivation-or-hormones-day-89/), [various slight medical risks including to future fertility](https://srconstantin.github.io/2016/10/06/cross-sex-hormone-therapy.html)).
+
+If someone I trusted as an intellectual authority had falsely told me that HRT makes you go blind and lose the ability to hear music, _and I were dumb enough to believe them_, then I wouldn't have done it, and I would have missed out on something that benefitted me. Such an authority figure would be harming me by means of giving me bad information; my life would have been better if I hadn't trusted them to tell me the truth.
+
+In contrast, I think asking everyone in my life to use she/her pronouns for me would be an _obviously incredibly bad decision_. Because—notwithstanding my clean-shavenness and beautiful–beautiful ponytail and slight gynecomastia from that HRT experiment five years ago—anyone who looks at me can see at a glance that I'm male (as a _fact_ about the real world, however I feel about it). People would comply because they felt obligated to (and apologize profusely when they slipped up), but it wouldn't come naturally, and strangers would always get it wrong without being told—_in accordance with_ the "default for those-who-haven't-asked that goes by gamete size" clause of Yudkowsky's reform proposal, but really because pronouns are firmly attached to sex in their heads. The costs (this tremendous awkwardness and fakeness suffusing _all future social interactions involving me_) would exceed the benefits (I actually do feel happier about the word _she_).
+
+I used to trust Yudkowsky as an intellectual authority; his [Sequences](https://www.readthesequences.com/) from the late 'aughts were so life-alteringly great that I built up a trust that if Eliezer Yudkowsky said something, that thing was probably so, even if I didn't immediately understand why. But these days, Yudkowsky is telling me that 'she' normatively refers to the set of people who have asked us to use 'she', and that those who disagree are engaging in logically rude Shenanigans. However, as I have just explained at length, this is bullshit. (Declaring a "normative" meaning on your Facebook wall doesn't rewrite the _actual_ meaning embodied the brains of 370 million English speakers.) If I were _dumb enough to believe him_, I might ask people for new pronouns, which would obviously be an incredibly bad decision. Yudkowsky is harming a reference class of people that includes more naïve versions of me by giving them bad information; my life is better because I don't trust Eliezer Yudkowsky to tell me the truth.
+
+(I guess I [can't say I wasn't warned](https://www.lesswrong.com/posts/wustx45CPL5rZenuo/no-safe-defense-not-even-science).)
+
+-----
+
+If Yudkowsky is obviously playing dumb (consciously or not) and his comments can't be taken seriously, what's _actually_ going on here?
+
+When smart people act dumb, [it's usually wisest to assume that their behavior represents _optimized_ stupidity](https://www.lesswrong.com/posts/sXHQ9R5tahiaXEZhR/algorithmic-intent-a-hansonian-generalized-anti-zombie)—apparent "stupidity" that achieves a goal through some other channel than their words straightforwardly reflecting the truth. Someone who was _actually_ stupid wouldn't be able to generate text with a specific balance of insight and selective stupidity fine-tuned to reach a gender-politically convenient conclusion without explicitly invoking any controversial gender-political reasoning.
+
+Fortunately, Yudkowsky graciously grants us a clue in the form of [a disclaimer comment](https://www.facebook.com/yudkowsky/posts/10159421750419228?comment_id=10159421833274228):
+
+> It unfortunately occurs to me that I must, in cases like these, disclaim that—to the extent there existed sensible opposing arguments against what I have just said—people might be reluctant to speak them in public, in the present social atmosphere. [...]
+>
+> This is a filter affecting your evidence; it has not to my own knowledge filtered out a giant valid counterargument that invalidates this whole post. I would have kept silent in that case, for to speak then would have been dishonest.
+>
+> Personally, I'm used to operating without the cognitive support of a civilization in controversial domains, and have some confidence in my own ability to independently invent everything important that would be on the other side of the filter and check it myself before speaking. So you know, from having read this, that I checked all the speakable and unspeakable arguments I had thought of, and concluded that this speakable argument would be good on net to publish, as would not be the case if I knew of a stronger but unspeakable counterargument in favor of Gendered Pronouns For Everyone and Asking To Leave The System Is Lying.
+>
+> But the existence of a wide social filter like that should be kept in mind; to whatever quantitative extent you don't trust your ability plus my ability to think of valid counterarguments that might exist, as a Bayesian you should proportionally update in the direction of the unknown arguments you speculate might have been filtered out.
+
+So, the explanation of [the problem of political censorship filtering evidence](https://www.lesswrong.com/posts/DoPo4PDjgSySquHX8/heads-i-win-tails-never-heard-of-her-or-selective-reporting) here is great, but the part where Yudkowsky claims "confidence in [his] own ability to independently invent everything important that would be on the other side of the filter" is just _laughable_. My point that _she_ and _he_ have existing meanings that you can't just ignore by fiat given that the existing meanings are _exactly_ what motivate people to ask for new pronouns in the first place is _really obvious_.
+
+Really, it would be _less_ embarassing for Yudkowsky if he were outright lying about having tried to think of counterarguments. The original post isn't _that_ bad if you assume that Yudkowsky was writing off the cuff, that he clearly just _didn't put any effort whatsoever_ into thinking about why someone might disagree. If he _did_ put in the effort—enough that he felt comfortable bragging about his ability to see the other side of the argument—and _still_ ended up proclaiming his "simplest and best protocol" without even so much as _mentioning_ any of its incredibly obvious costs ... that's just _pathetic_. If Yudkowsky's ability to explore the space of arguments is _that_ bad, why would you trust his opinion about _anything_?
+
+But perhaps it's premature to judge Yudkowsky without appreciating what tight constraints he labors under. The disclaimer comment mentions "speakable and unspeakable arguments"—but what, exactly, is the boundary of the "speakable"? In response to a commenter mentioning the cost of having to remember pronouns as a potential counterargument, Yudkowsky [offers us another clue](https://www.facebook.com/yudkowsky/posts/10159421750419228?comment_id=10159421833274228&reply_comment_id=10159421871809228):
+
+> People might be able to speak that. A clearer example of a forbidden counterargument would be something like e.g. imagine if there was a pair of experimental studies somehow proving that (a) everybody claiming to experience gender dysphoria was lying, and that (b) they then got more favorable treatment from the rest of society. We wouldn't be able to talk about that. No such study exists to the best of my own knowledge, and in this case we might well hear about it from the other side to whom this is the exact opposite of unspeakable; but that would be an example.
+
+(As an aside, the wording of "we might well hear about it from _the other side_" (emphasis mine) is _very_ interesting, suggesting that the so-called "rationalist" community, is, effectively, a partisan institution, despite its claims to be about advancing the generically human art of systematically correct reasoning.)
+
+I think (a) and (b) _as stated_ are clearly false, so "we" (who?) fortunately aren't losing much by allegedly not being able to speak them. But what about some _similar_ hypotheses, that might be similarly unspeakable for similar reasons?
+
+Instead of (a), consider the claim that (a′) self-reports about gender dysphoria are substantially distorted by [socially-desirable responding tendencies](https://en.wikipedia.org/wiki/Social-desirability_bias)—as a notable and common example, heterosexual males with [sexual fantasies about being female](http://www.annelawrence.com/autogynephilia_&_MtF_typology.html) [often falsely deny or minimize the erotic dimension of their desire to change sex](/papers/blanchard-clemmensen-steiner-social_desirability_response_set_and_systematic_distortion.pdf) (The idea that self-reports can be motivatedly inaccurate without the subject consciously "lying" should not be novel to someone who co-blogged with [Robin Hanson](https://en.wikipedia.org/wiki/The_Elephant_in_the_Brain) for years!)
+
+And instead of (b), consider the claim that (b′) transitioning is socially rewarded within particular _subcultures_ (although not Society as a whole), such that many of the same people wouldn't think of themselves as trans or even gender-dysphoric if they lived in a different subculture.
+
+I claim that (a′) and (b′) are _overwhelmingly likely to be true_. Can "we" talk about _that_? Are (a′) and (b′) "speakable", or not?
+
+We're unlikely to get clarification from Yudkowsky, but based on my experiences with the so-called "rationalist" community over the past coming-up-on-six years—the Whole Dumb Story of which is to be the topic of _another_ future multi-thousand-word blog post, which I've found difficult to write, because it still hurts—I'm going to _guess_ that the answer is broadly No: no, "we" can't talk about that.
+
+But if I'm right that (a′) and (b′) should be live hypotheses and that Yudkowsky would consider them "unspeakable", that means "we" can't talk about what's _actually going on_ with gender dysphoria and transsexuality, which puts the whole discussion in a different light. In another comment, Yudkowsky lists some gender-transition interventions he named in [a November 2018 Twitter thread](https://twitter.com/ESYudkowsky/status/1067183500216811521) that was the precursor to the present discussion—using a different bathroom, changing one's name, asking for new pronouns, and getting sex reassignment surgery—and notes that none of these are calling oneself a "woman". [He continues](https://www.facebook.com/yudkowsky/posts/10159421750419228?comment_id=10159421986539228&reply_comment_id=10159424960909228):
+
+> [Calling someone a "woman"] _is_ closer to the right sort of thing _ontologically_ to be true or false. More relevant to the current thread, now that we have a truth-bearing sentence, we can admit of the possibility of using our human superpower of language to _debate_ whether this sentence is indeed true or false, and have people express their nuanced opinions by uttering this sentence, or perhaps a more complicated sentence using a bunch of caveats, or maybe using the original sentence uncaveated to express their belief that this is a bad place for caveats. Policies about who uses what bathroom also have consequences and we can debate the goodness or badness (not truth or falsity) of those policies, and utter sentences to declare our nuanced or non-nuanced position before or after that debate.
+>
+> Trying to pack all of that into the pronouns you'd have to use in step 1 is the wrong place to pack it.
+
+Sure, _if we were in the position of designing a constructed language from scratch_ under current social conditions in which a person's "gender" is a contested social construct, rather than their sex an objective and undisputed fact, then yeah: in that situation _which we are not in_, you definitely wouldn't want to pack sex or gender into pronouns. But it's a disingenuous derailing tactic to grandstand about how people need to alter the semantics of their _already existing_ native language so that we can discuss the real issues under an allegedly superior pronoun convention when, _by your own admission_, you have _no intention whatsoever of discussing the real issues!_
+
+(Lest the "by your own admission" clause seem too accusatory, I should note that given constant behavior, admitting it is _much_ better than not-admitting it; so, huge thanks to Yudkowsky for the transparency on this point!)
+
+Again, a comparison to the _tú_/_usted_ distinction is instructive. It's one thing to advocate for collapsing the distinction and just settling on one second-person singular pronoun for the Spanish language. That's principled.
+
+It's quite another thing altogether to _simultaneously_ try to prevent a speaker from using _tú_ to indicate disrespect towards a social superior (on the stated rationale that the _tú_/_usted_ distinction is dumb and shouldn't exist), while _also_ refusing to entertain or address the speaker's arguments explaining _why_ they think their interlocutor is unworthy of the deference that would be implied by _usted_ (because such arguments are "unspeakable" for political reasons). That's just psychologically abusive.
+
+If Yudkowsky _actually_ possessed (and felt motivated to use) the "ability to independently invent everything important that would be on the other side of the filter and check it [himself] before speaking", it would be _obvious_ to him that "Gendered Pronouns For Everyone and Asking To Leave The System Is Lying" isn't the hill anyone would care about dying on if it weren't a Schelling point. A lot of TERF-adjacent folk would be _overjoyed_ to concede the (boring, insubstantial) matter of pronouns as a trivial courtesy if it meant getting to _actually_ address their real concerns of "Biological Sex Actually Exists", and ["Biological Sex Cannot Be Changed With Existing or Foreseeable Technology"](https://www.lesswrong.com/posts/QZs4vkC7cbyjL9XA9/changing-emotions) and "Biological Sex Is Sometimes More Relevant Than Self-Declared Gender Identity." The reason so many of them are inclined to stand their ground and not even offer the trivial courtesy is because they suspect that the matter of pronouns is being used as a rhetorical wedge and typographical attack to try to prevent people from talking or thinking about sex.
+
+And this suspicion seems broadly accurate! _After_ having been challenged on it, Yudkowsky can try to spin his November 2018 Twitter comments as having been a non-partisan matter of language design ("Trying to pack all of that into the pronouns [...] is the wrong place to pack it"), but when you read the text that was actually published at the time, parts of it are hard to read as anything other than an attempt to intimidate and delegitimize people who want to use language to reason about sex rather than gender identity. [For example](https://twitter.com/ESYudkowsky/status/1067490362225156096):
+
+> The more technology advances, the further we can move people towards where they say they want to be in sexspace. Having said this we've said all the facts. Who competes in sports segregated around an Aristotelian binary is a policy question (that I personally find very humorous).
+
+Sure, _in the limit of arbitrarily advanced technology_, everyone could be exactly where they wanted to be in sexpsace. Having said this, we have _not_ said all the facts relevant to decisionmaking in our world, where _we do not have arbitrarily advanced technology_. As Yudkowsky [acknowledges in the previous Tweet](https://twitter.com/ESYudkowsky/status/1067488844122021888), "Hormone therapy changes some things and leaves others constant." The existence of HRT does not take us into the Glorious Transhumanist Future where everyone is the sex they say they are.
+
+Rather, previously sexspace had two main clusters (normal females and males) plus an assortment of tiny clusters corresponding to various [disorders of sex development](https://en.wikipedia.org/wiki/Disorders_of_sex_development), and now it has two additional tiny clusters: females-on-masculinizing-HRT and males-on-feminizing-HRT. Certainly, there are situations where you would want to use "gender" categories that use the grouping {females, males-on-feminizing-HRT} and {males, females-on-masculinizing-HRT}.
+
+But the _reason_ for having sex-segregated sports leagues is because the sport-relevant multivariate trait distributions of female bodies and male bodies are quite different.
+
+[TODO: (clean up and consolidate the case here after reading the TW-in-sports articles)
+
+The "multivariate" part is important, because
+
+Different traits have different relevance to different sports; the fact that it's apples-to-oranges is _why_ women do better in ultraswimming—that competition is sampling a corner of sportspace where body fat is an advantage
+
+It's not that females and males are exactly the same except males are 10% stronger on average
+
+It really is an apples-to-oranges comparison, rather than "two populations of apples with different mean weight"
+
+https://www.lesswrong.com/posts/cu7YY7WdgJBs3DpmJ/the-univariate-fallacy
+https://www.lesswrong.com/posts/vhp2sW6iBhNJwqcwP/blood-is-thicker-than-water
+
+If you just had one integrated league, females wouldn't be competitive (in almost all sports, with some exceptions [like ultra-distance swimming](https://www.swimmingworldmagazine.com/news/why-women-have-beaten-men-in-marathon-swimming/)).
+
+]
+
+Given the empirical reality of the different multivariate trait distributions, "Who are the best athletes _among females_" is a natural question for people to be interested in, and want separate sports leagues to determine.
+
+(Similarly, when conducting [automobile races](https://en.wikipedia.org/wiki/Auto_racing), you want there to be rules enforcing that all competitors have the same type of car for some common-sense-reasonable operationalization of "the same type", because a race between a sports car and a [moped](https://en.wikipedia.org/wiki/Moped) would be mostly measuring who has the sports car, rather than who's the better racer.)
+
+Including males people in female sports leagues undermines the point of having a separate female league.
+
+[TODO: more sentences explaining why HRT doesn't break taxonicity of sex, and why "gender identity" is a much less plausible joint anyway]
+
+[TODO: sentences about studies showing that HRT doesn't erase male advantage
+https://twitter.com/FondOfBeetles/status/1368176581965930501
+https://link.springer.com/article/10.1007/s40279-020-01389-3
+https://bjsm.bmj.com/content/55/15/865