"When I've asked what the lack of female-only spaces would mean for women of certain faith groups, or survivors of sexual violence, the response is an almighty shrug. Over and again I've heard "no trans person has ever harmed a woman or a girl in a female space", the speakers' consciences apparently untroubled by the fact that they are parroting an easily disprovable lie, because there's ample evidence that men claiming a female identity have committed sexual offences, acts of violence and voyeurism, both inside women's spaces and without. Indeed, the Ministry of Justice's own figures show that there are proportionately more trans-identified males in jail in the UK for sexual offences than among male prisoners as a whole. When this inconvenient fact is raised, I'm sometimes told trans-identified sex offenders "aren't really trans, they're just gaming the system”. Well, yes. That's the point. If a system relies on an unfalsifiable sense of self rather than sex, it's impossible to keep bad faith actors out."