"At any rate, the world is a big place; the systems we use in the United States and in Europe are neither natural nor inevitable, and around the world people have devised different systems to make gender and sexuality make sense. In the United States, we have become far too sure about the stability and separation of carious forms of gender and sexual identity. We are too confident about the operationality of the homo-hetero binary and the male/female divide, and because we are sure that these realms are separate, we do not think about how changes in one sphere create changes in other spheres: and so the momentous shifts in the meaning of gender and sex and sexuality that have allowed for the emergence of transgenders and transexuals globally have also created massive, if unnoticed, shifts in the meaning of heterosexuality, male and female."