This matters to me because if we become disengaged from the fundamental, structural reality of biological sex difference I believe we are in terrible danger of losing all grasp on the real world and the scientific method.
It also matters because I am a woman and I owe it to my daughter to keep the sex-based protections and rights which I inherited safe for her.
I have spoken at public events, organised behind the scenes, attended conferences, formed local groups, handed out leaflets, spoken to friends and been vocal on social media. I have lost friends, some of whom I have known for decades. Some of them have been viciously insulting about my supposed bigotry. I have been shouted and sworn at in public.
Fox, Mother and writer