Being a human male is a biological category. It means having a particular chromosomal structure: XY. This normally gives rise to certain physical characteristics such as particular hormonal balances and bodily structures such as a penis and testes. In childhood stages, we call this a boy; in adult stages, we call this a man. A human female, on the other hand, has an XX chromosomal structure, leading to a particular hormonal balance and bodily characteristics, such as ovaries, a uterus, and mammary glands. The child is a girl; the adult is a woman. The way to be sure which sex a particular human being is, male or female, is not by asking the opinion of the person in question, nor … “following the gender classification on a student’s identification documents, like a driver’s license.” It is to do a physical examination. Whether one is a human male or a human female is a matter of fact, and that is no less the case because the genetic factors that determine sex are not always well or fully understood. It is such a matter of fact that undergoing hormone treatment and surgery to create a more masculine appearance is not going to make a woman into a man. It will merely result in a mutilated woman—a situation that may please the person who undergoes such “therapy” but does nothing to change the foundational facts.