@RiverEnodian meh, technically, the fact that one “identifies” with the non-cisgender is actually a “divergence” of sex development, localized mostly to the neuroendocrine system, instead of to the genitalia, like in other intersex conditions
latest research is pretty close to identifying enough of the genetic and brain differences to actually diagnose it by genetic testing or high-resolution brain scans
there is a lot more complexity and nuance to the science of T than many give it credit for