Gender/Racial Locking in 2019

[linay]

Also, there are not only two sexes, that's invalidating intersex individuals who are born with both (and yes, before the inevitable "it's an exception, not the rule" then how do you treat them socially? it's not the same as being born deaf or blind, and we still have measures for them).

You treat them on a case by case basis depending on the actual effect their intersex has on the body.

Well, no. There's numerous chromosome strand variations i.e. Klinefelter's syndrome.

And yet that particular syndrome is acknowledged as occurring on boys and men (males). Chromosomal variation does not necessarily dictate actual physical result, or dictate them to varying degrees. So it is still correct to say humans have two sexes. Any rare variation should be treated on a case by case basis depending on the actual effect of the variation on each individual.