Has this been mentioned already? I looked and didn't find a thread. Andy Lewis @lecanardnoir wrote it as a thread on twitter yesterday and has now published it as a blog post.
It's a very clear refutation of the 'sex is a spectrum' twaddle, that even the most hard of thinking TRA should be able to grasp, and the illustrations are delightful.
www.quackometer.net/blog/2020/06/on-the-existence-of-females.html
What is strange is that in the past 10 years, an idea has evolved among the cat-food tin opening apes that sex is not real, it is an arbitrary construct, it is ill-defined and difficult to talk objectively about. It is a spectrum of possibilities rather than these two categories.
This is not an idea you will find in the biology peer-reviewed literature where sex is universally described as above – a category based on gamete types. The idea is used to undermine the ability of females to describe their unique position in life & their associated experiences.
It is a political and social idea that impacts females and their rights to define themselves as a material class. Biology rejects this absurd idea of the arbitrariness of sex. We need biologists to speak up and to say that rather than leaving it up to children’s fantasy authors.