+> I agree that there's going to be some confusion if you talk about someone as a "she" and the person who turns up is a.m.a.b. But I think the confusion that results from calling them "she" is a lot more consequential. Progressive communication norms absolutely reflect a concern for information efficiency! It takes a lot less time to say "she" than it does to say "he, but I also think trans people are great."
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+(Bolding mine.)
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+I see. So the norm is optimized to convey information _about the speaker_ rather than [what is being spoken about](http://thetranswidow.com/2021/02/21/pronouns-and-the-purpose-of-language/).
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+Kind of like ... a loyalty test?
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+And the less intuitive it is, the better it works _as_ a loyalty test: referring to an obviously male person as _he_ merely reflects conventional usage and reveals no information about one's motives, whereas refering to an obvious male as _she_—or using singular _they_ for a named individual whose sex is apparent—extracts a cognitive cost, however slight—a cost [allies are more willing to pay than non-allies](https://en.wikipedia.org/wiki/Signalling_theory).