You didn't bother looking clearly. Took me me a five second Google search, and if I could bother to search journals and so on I'd find much more authoritative examples too.
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Is sex a spectrum? Or is sex binary? | Fair Play For Women
Are there more than two sexes? Is sex a spectrum? Where do intersex people fit in? Here's what biologists say...fairplayforwomen.com
All that is 100% factual. What you are answering is actually a completely unrelated separate question - can people be identified as having various sex traits by different metrics. By making that mistake, you are denying biological reality.
I'm familiar with Colin Wright, a spider biologist; I did in fact say "clinical/academic" studies (i.e., peer reviewed research in the primary literature), not an opinion piece by a seemingly controversial policy group (I never heard of them, so that's what I read about them on wikipedia). And that article makes a lot of claims that aren't relevant to my own claim. I have no interest in the binary debate, I'm merely pointing out, as I always have, that sex can be defined on multiple biological levels; this is supported by the clinical literature. Gender identity doesn't have anything to do with my claim. I don't think sex is a spectrum and I'm not claiming there are [edit: three sexes] (though I'm sympathetic to the views of intersex people), but the existence of intersex people speaks to the multiple ways in which sex can be defined: anatomically, chromosomally, gonadally, etc.,--along those lines, I'm always confused by the very anti-scientific view that a rarity of an event somehow makes it not count (e.g., their nod to intersex people). I don't think sex is a social construct either.
Also, I'm puzzled by their claim about secondary sexual traits: things like possession of a uterus, fallopian tubes, ovaries, testes, external genitalia, etc., are not secondary sexual traits, as secondary sexual traits are defined by things that emerge at puberty and none of the things I've listed would be classified as such.
Maybe I am answering a completely different question, and we are talking past each other. But I'm certainly not denying biological reality as a scientist who has studied evolutionary biology for 25+ years.
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