 If you say everybody's male or female, and here's what makes you male or what makes you female, if somebody can find one counterexample, that blows up the law because that definition means that all those that fall into this category, they apply. And so some states thought, okay, well, let's say XX and XY chromosome, which is what most people kind of think. That's actually not what sex is. Those are sex-determining mechanisms. Sex is about the reproductive strategy of organisms.