I have had a few many discussions on Twitter regarding sex v gender.
I had a discussion with a person yesterday where I said that I didn't care how anyone identified, however single sex spaces should be protected, and the person then stated that sex wasn't binary & I must accept this.
You can, I'm sure, imagine my response to this, but they just came with these bizarre web links.
My response is usually "in animals & humans, there are 2 sexes (intersex is a condition, not a sex class), and I am not prepared to debate scientific fact with you.
Is there a better response I can use? (essentially a copy & paste)