I mean it is a core part of who we are. More than how much we like to play videos.
I don't know if it can change. You mean over a lifetime, or hour by hour. Most people have a stable gender ID don't they? I'm assuming that if someone says they identify as a woman, then they feel they are one. Like me. Like transitioning or transitioned MtF TSs. If the person experiences fluctuating gender ID (feeling like a woman for an hour or two days, and then feeling like a man), then presumably they have a memory of an hour or two days ago and they know that their feelings fluctuate. But this is not indicated in statements like "this is who I am". I was wondering what the "this" was.
