+To which I now realize the correct answer is—_yes!_ Yes, it's cheating! Category-membership claims of the form "X is a Y" [represent hidden probabilistic inferences](https://www.lesswrong.com/posts/3nxs2WYDGzJbzcLMp/words-as-hidden-inferences); inferring that entity X is a member of category Y means [using observations about X to decide to use knowledge about members of Y to make predictions about features of X that you haven't observed yet](https://www.lesswrong.com/posts/gDWvLicHhcMfGmwaK/conditional-independence-and-naive-bayes). But this AI trick can only _work_ if the entities you've assigned to category Y are _actually_ similar—if they form a tight cluster in configuration space, such that using the center of the cluster to make predictions about unobserved features gets you _close_ to the right answer, on average.
+
+The rules don't change when the entity X happens to be "my female analogue" and the category Y happens to be "me". The ordinary concept of "personal identity" tracks how the high-level features of individual human organisms are stable over time. You're going to want to model me-on-Monday and me-on-Thursday as "the same" person even if my Thursday-self woke up on the wrong side of bed and has three whole days of new memories. When interacting with my Thursday-self, you're going to be using your existing mental model of me, plus a diff for "He's grumpy" and "Haven't seen him in three days"—but that's a _very small_ diff, compared to the diff between me and some other specific person you know, or the diff between me and a generic human who you don't know.
+
+In everyday life, we're almost never in doubt as to which entities we want to consider "the same" person (like me-on-Monday and me-on-Thursday), but we can concoct science-fictional thought experiments that force [the Sorites problem](https://plato.stanford.edu/entries/sorites-paradox/) to come up. What if you could "merge" two people—construct a human with a personality "in between" yours and mine, that had both of our memories? (You know, like [Tuvix](https://memory-alpha.fandom.com/wiki/Tuvix_(episode)).) Would that person be me, or you, or both, or neither? (Derek Parfit has [a book](https://en.wikipedia.org/wiki/Reasons_and_Persons#Personal_identity) with lots of these.)
+
+[TODO: change scenario to interpolate between people, _at what point_ does it become]
+
+People _do_ change a lot over time; there _is_ a sense in which, in some contexts, we _don't_ want to say that a sixty-year-old is the "same person" they were when they were twenty—and forty years is "only" 4,870 three-day increments. But if a twenty-year-old were to be magically replaced with their sixty-year-old future self (not just superficially wearing an older body like a suit of clothing, but their brain actually encoding forty more years of experience and decay) ... well, there's a reason I reached for the word "replace" (suggesting putting a _different_ thing in something's place) when describing the scenario. That's what Yudkowsky means by "the change is too sharp"—the _ordinary_ sense in which we model people as the "same person" from day to day (despite people having [more than one proton](/2019/Dec/on-the-argumentative-form-super-proton-things-tend-to-come-in-varieties/) in a different place from day to day) has an implicit [Lipschitz condition](https://en.wikipedia.org/wiki/Lipschitz_continuity) buried in it.
+
+The thing about Sorites problems is that they're _incredibly boring_. The map is not the territory. The distribution of sand-configurations we face in everyday life is such that we usually have an answer as to whether the sand "is a heap" or "is not a heap", but in the edge-cases where we're not sure, arguing about whether to use the word "heap" _doesn't change the configuration of sand_. You might think that if [the category is blurry](https://www.lesswrong.com/posts/dLJv2CoRCgeC2mPgj/the-fallacy-of-gray), you therefore have some freedom to [draw its boundaries](https://www.lesswrong.com/posts/d5NyJ2Lf6N22AD9PB/where-to-draw-the-boundary) the way you prefer—but [the cognitive function of the category is for making probabilistic inferences on the basis of category-membership](https://www.lesswrong.com/posts/esRZaPXSHgWzyB2NL/where-to-draw-the-boundaries), and those probabilistic inferences can be quantitatively better or worse. Preferences over concept definitions that aren't about maximizing predictive accuracy are therefore preferences _for deception_, because "making probability distributions less accurate in order to achieve some other goal" is exactly what _deception_ means.
+
+That's why defining your personal identity to get the answer you want is cheating. If the answer you wanted was actually _true_, you could just say so without needing to _want_ it.
+
+When [Phineas Gage's](/2017/Dec/interlude-xi/) friends [said he was "no longer Gage"](https://en.wikipedia.org/wiki/Phineas_Gage) after the railroad accident, what they were trying to say was that interacting with post-accident Gage was _more relevantly similar_ to interacting with a stranger than it was to interacting with pre-accident Gage, even if Gage-the-physical-organism was contiguous along the whole strech of space time.
+
+Same principle when Yudkowsky wrote, "If I fell asleep and woke up as a true woman [...] I don't think I'd call her 'me'". The claim is that psychological sex differences are large enough to violate the Lipschitz condition imposed by our _ordinary_ concept of personal identity. Maybe he was wrong, but if so, that cashes out as being wrong _about_ how similar women and men actually are (which in principle could be operationalized and precisely computed, even if _we_ don't know how to make it precise), _not_ whether we prefer the "call her me" or "don't call her me" conclusion and want to _retroactively redefine the meaning of the words in order to make the claim come out "true."_
+
+[TODO: Do ppl ever really recover from being religious? being at peace with what's real ...]
+https://arbital.greaterwrong.com/p/rescue_utility
+
+[People can stand what is true, for we are already doing so.](https://www.readthesequences.com/You-Can-Face-Reality)
+
+-------
+
+<a id="coda"></a>
+
+### Coda
+
+> And Durham—the software puppet, the lifeless shell animated by a being from another plane—looked him in the eye and said, "You have to let me show you what you are."
+>
+> —_Permutation City_ by Greg Egan
+
+Anyway, that—briefly (I mean it)—is the story about my weird obligate sex fantasy about being a woman and how I used to think that it was morally wrong to believe in psychological sex differences, but then I gradually changed my mind and decided that psychological sex differences are probably real after being deeply influenced by this robot-cult blog about the logic of Science. It's probably not that interesting? If we were still living in the socio-political environment of 2009, I'm pretty sure I wouldn't be blogging about my weird sexual obsessions (as evidenced by the fact that, in 2009, I wasn't blogging about them).
+
+Imagine my surprise to discover that, in the current year, my weird sexual obsession is suddenly at the center of [one of the _defining political issues of our time_](https://en.wikipedia.org/wiki/Transgender_rights).
+
+All this time—the dozen years I spent reading everything I could about sex and gender and transgender and feminism and evopsych and doing various things with my social presentation (sometimes things I regretted and reverted after a lot of pain, like the initials) to try to seem not-masculine—I had been _assuming_ that my gender problems were not of the same kind as people who were _actually_ transgender, because the standard narrative said that that was about people whose ["internal sense of their own gender does not match their assigned sex at birth"](https://www.vox.com/identities/21332685/trans-rights-pronouns-bathrooms-sports), whereas my thing was obviously at least partially an outgrowth of my weird sex fantasy—I had never interpreted the beautiful pure sacred self-identity thing as an "internal sense of my own gender".
+
+_Why would I?_ In the English of my youth, "gender" (as a single word, rather than part of the phrase "gender role") was understood as a euphemism for _sex_ for people who were squeamish about the potential ambiguity betweeen _sex_-as-in-biological-sex and _sex_-as-in-intercourse. (Judging by this blog's domain name, I am not immune to this.) In that language, my "gender"—my sex—is male. Not because I'm necessarily happy about it (and I [used to](/2017/Jan/the-erotic-target-location-gift/) be pointedly insistent that I wasn't), but as an observable biological fact that, whatever my pure beautiful sacred self-identity feelings, _I am not delusional about_.
+
+Okay, so trans people aren't delusional about their [developmental sex](/2019/Sep/terminology-proposal-developmental-sex/); the claim is that their internal sense of their own gender is more real or more relevant in some sense and should take precedence.
+
+So where does that leave me? This post is about my _own_ experiences, and not anyone else's (which I obviously don't have access to). I've _mentioned_ transgenderedness several times in the main body of this post, but I've tried to mostly limit the intent of it to references to an explanation that one might be tempted to apply to my case, but which I don't think fits, or the brief summary of the two-type Blanchard taxonomy for which the word _autogynephilia_ (the obvious and perfect word for my thing) was coined. Everything I've said so far is _consistent_ with a world in which Blanchard was dumb and wrong, a world where my idiosyncratic weird sex perversion and associated beautiful pure sacred self-identity feelings are taxonomically and etiologically distinct from whatever brain-intersex condition causes _actual_ trans women. That's the world I _thought_ I lived in for the ten years after encountering the obvious and perfect word.
+
+But after moving to Berkeley and doing a little bit more reading ... I _don't_ think Blanchard was dumb and wrong. I think the two-type taxonomy is _basically_ correct, as a first approximation. (Where psychology is complicated enough such that there's much more to be said about what that means, and what better approximations would look like, but simple theories that [explain a lot of our observations](https://surveyanon.wordpress.com/2019/04/27/predictions-made-by-blanchards-typology/) are better than pretending not to have a theory.) 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, actually I think you're just a perverted male like me"?
+
+Actually, lots. For example, in April 2018, the /r/MtF subreddit (which currently has 90,000 subscribers) [posted a link to a poll: "Did you have a gender/body swap/transformation "fetish" (or similar) before you realised you were trans?"](https://archive.is/uswsz). The [results of the poll](https://strawpoll.com/5p7y96x2/r): [_82%_ said Yes](/images/did_you_have-reddit_poll.png). [Top comment in the thread](https://archive.is/c7YFG), with 232 karma: "I spent a long time in the 'it's probably just a fetish' camp".
+
+Certainly, 82% is not 100%. Certainly, you could argue that Reddit has a sampling bias such that poll results and karma scores from /r/MtF fail to match the distribution of real-world MtFs. But if you don't take the gender-identity story as a _axiom_ and [_actually look_](https://www.lesswrong.com/posts/SA79JMXKWke32A3hG/original-seeing) at the _details_ of what people say and do, these kinds of observations are _not hard to find_.
+
+Informal Reddit poll isn't "scientific" enough for you? Fine. The scientific literature says the same thing: [TODO: cite as many 80% surveys as I can from Kay Brown's bibliography].
+
+Worried about leading survey questions pointing to the wrong conclusion, and want more detailed (if not standardizable and quantifiable) accounts? Me too! And there's lots!
+
+[TODO: McCloskey, or how did I missed this from Serano 2007]
+
+> There was also a period of time when I embraced the word "pervert" and viewed my desire to be female as some sort of sexual kink. But after exploring that path, it became obvious that explanation could not account for the vast majority of instances when I thought about being female in a nonsexual context.
+
+[TODO: Nevada. Nevada specifically dissess the Blanchard account, as do people I talk to. One said AGP transition could be possible but very rare, and the same goddamned person is on the record as being into TF porn at 19 when their dysphoria kicked in; or someone dissed Blanchard, but endorses Anne Vitale, which makes the same observations and arrives at the same taxonomy, but dresses it up in socially-desirable language]
+
+[...]