In the popular consciousness (to the extent that awareness of transsexuals is there at all), a sex change is an event, a surgical moment that flips a switch and turns a man into a woman (or vice versa). But what those of us in the midst of it know is that it’s a glacially slow mutation, perhaps one-onehundredth of a percent per day, creeping so slowly that you can’t see anything for huge periods of time, then suddenly noticea feature or a sensation. It’s not a light switch at all, but an incrementally-fine dimmer.