Alright, I'm pretty burned out on this conversation so this is gonna be my last post. It's been distracting me and I want my real life back. I'll just try to wrap up the bits I find interesting.

> But if you mean, would I spot Blair if I didn't know them?

That's more or less what I mean, but also, would you, on top of that, expect me to spot the same thing?

> Do you think this means I'm reading their gender expression?

I don't think that logically follows, and I certainly don't think I'm going to convince you of that.

I think I have a chance of convincing you that the argument you gave in the paragraph starting with "What people who harp on pronouns miss is" in the comment at https://news.ycombinator.com/item?id=25379317 is a bad argument for the claim that pronouns (should?) refer to biological sex rather than gender. So I'm shooting for that. (But not for convincing you that the conclusion is wrong.)

I think the Blaire White across a room scenario suggests that pronouns are more useful in a referential sense if they're used in a way that aligns with gender presentation (assuming a person's gender presentation falls neatly into male or female) than if they're used in a way that aligns with biological sex, in the case where those things differ. So if you're really just optimizing for referential usefulness when you're using "he" and "she", I don't think "biological sex" is where you're going to land. I think you're going to land closer to "gender", and even closer to "gender presentation". These things align for most people, so usually it doesn't matter, but in the cases where it matters I expect "biological sex" to be less referentially useful pretty often.

I also don't think the Blaire White scenario is unusual. I know a handful of trans people in person, and the same applies to them, i.e. if you were to point someone who looks like one of them out of a room and use a pronoun to help me know which person you're talking about, the pronoun that matches their gender identity would do a better job than the pronoun that matches their biological sex.

I also don't think it's just me, i.e. I don't think most people are much more prone to 'seeing' someone's true biological sex in this kind of scenario than I am.

> Doesn't that implicitly assume that there are only two gender expressions then?

Sort of. I think "that thing that you see and also expect me to see that makes you choose which of 'he' or 'she' you would use if you want to be referentially useful when pointing out a person across the room" doesn't quite capture what "gender presentation" is either. (Hence the hedge with "if anything" in my earlier comment.) I just think that thing lines up with "gender presentation" a lot better than it lines up with "biological sex" in the cases where those differ.

> It brings up the question of how one would be expected to recognize 'Moon Gender' at all.

Taking it seriously, in real life, for people with Moon Gender (or whatever outside-the-binary gender identity you want to substitute)? I don't think one is expected to just recognize it based on presentation. Hence, the practice of being explicit about preferred pronouns in circles that care about about this.