" Gender and sex can, and do, mean different things in different contexts. More than that, they interact. Why is it that we classify bodies into "male" and "female" first, rather than through any other categorization? Why do so many ideas about sex cleave so strongly to gender stereotypes? Is it possible to consider the body as something neutral that exists apart from the sexed and gendered terms we use to describe it?

Some trans people would prefer to avoid this argument altogether; others to others to bring it to a head. I stand with the latter option. Not because trans people are a problem to be explained away - validated or refuted by a singular notion of scientific truth - but because, when the facts of our supposed sexes are used to invalidate and endanger us, it is too dangerous not to. Not only that: the possibilities as to what trans people can teach us all about the science of sex and gender are too precious to dismiss. "

― C.N. Lester , Trans Like Me: A Journey for All of Us