Did you know that every single cell in a human body has either XX or XY chromosomes, with rare exceptions? That's the biological starting point. When we talk about "woman," I'm not talking about hairstyle or feeling. I'm talking about a category rooted in reproductive biology. If we redefine "woman" to mean anyone who identifies as one, we lose the ability to talk about female biology, pregnancy, or the pay gap. Marceline might say gender is a social construct, and I'll grant her that. But sex is not. I'm not denying trans people exist or deserve respect. But calling a trans-woman a woman conflates sex with gender, and that conflation has real consequences for sports, medicine, and sex-segregated spaces. My framework is simple: woman equals adult human female, based on biology. That's the definition that holds up when we need it most.