x+y

I enjoyed the first third of the book a lot more than the remainder. The first part seemed to genuinely present alternative ways of approaching gender issues from a mathematical framework. Once the ingressive and congressive terms were presented, though, it shifted and the math elements seemed to be mostly left behind. And for a 2020 book about gender, it mentioned cis-men and women almost exclusively and only mentioned transgender people less than a half dozen times it felt like, which felt a bit odd to me.