Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly where a male has an extra X chromosome.[10] These complications commonly include infertility and small, poorly functioning testicles (if present). These symptoms are often noticed only at puberty, although this is one of the most common chromosomal disorders, occurring in one to two per 1,000 live births. It is named after American endocrinologist Harry Klinefelter, who identified the condition in the 1940s.[4][5][11]
IMO FWIW, thon is more of a woman than Caitlyn Jenner.
You are defining a woman by her genes. So yes, I expect you to have a university degree to be able to make such an authoritative definition.
Several decades ago, the authorities on the subject regarded homosexuality as a mental disorder. Fortunately not all LGBT lay-people deferred to their judgements.
Just like I would expect you to have a degree in physics before making an authoritative definition based on properties of physics.
So I need a degree to say "E=mc2."
Believe it or not, Facebook University isn’t a real university.
I see. And what about people with Swyer Syndrome? They can live their entire lives with no one, not even them, suspecting their chromosomes are XY. Men? Should we be genetically testing every woman to make sure she isn’t really a man and doesn’t know it?
A 2017 study estimated that the incidence of Swyer syndrome is approximately 1 in 100,000 females.[22] Fewer than 100 cases have been reported as of 2018. There are extremely rare instances of familial Swyer syndrome.[23][24]
Well someone with Swyer Syndrome isn't a man, because in most cases they have a vulva, at least according to Wikipedia.
I wouldn't be opposed to genetic testing at birth, perhaps, but unless you're engaging in a sport or maybe getting a checkup I'm not sure why it needs to be standardized practice. These cases are pretty rare anyways, and many (if not most) DSDs are pronounced enough to be noticed during the natural course of living life.
A man is a person of male gender identity, i.e. identifying as a male
A woman is a person of female gender identity, i.e. identifying as a female
That's all there is to it, since the very concept of gender identity revolves around a purely social phenomenon of gender - which many people try to forcefully connect to sex, which is not the same thing and won't ever be.