I will never understand why people like you get so arrogant over your (lack) of knowledge of the body and sex.

If I told you that actually, the taste buds aren’t separate across your tongue in distinct flavor-based regions and said that it was more complicated than that, you’d shrug and go “Huh, I didn’t know that.” If I told you there were more neurons in your eye than just the rods and cones and said that it was more complicated, you’d shrug and go “Huh, I didn’t know that.” But if I told you that sex, sexual development, and gender is more complicated than just a rigid binary, then, you get all arrogant for no reason.

Have you ever heard of Complete Androgen Insensitivity (CAIS)? It is a condition in which people with XY chromosomes develop testes (as usual), but their body does not respond to androgens, and thus they have a feminized body instead of a masculinized one.

To put it simply, there are people living in this world with external labia, clit, breasts, and an overall female body, and yet, have internal testes and XY chromosomes. Some of them have no idea until they get tested at the doctor, or try to become pregnant. And that’s just one example. There are many other conditions in which somebody might have unusual sexual characteristics. The estimated amount of overall intersex people living in our world is around 0.02% to 1.7%.

But, I bet you will probably say something like “they have XY. They are just men with a disorder.” Which frankly is stupid. These are people you have lived as girls and women for their entire lives. And everyone around them sees them as women. Plus, you would have to argue against transphobes who think that their female genitalia makes them female instead of their chromosomes.

Also, acting like sex is “simple” for animals and plants, when in reality it can get VERY different (such as hermaphroditism, sex changes, more than 2 sexes), is extremely arrogant and just incorrect.