Can't comment on her latest book, however the tweets I read stating that biological sex, sex discrimination, and same-sex attraction are real in no way negate the idea of gender. Surprised such statements have drawn ire. I'd have thought discussing the impact of replacing sex-segregation with gender-segregation reasonable, considering the sheer number of people with potential to be affected. Please note: I haven't said I support either of these types of segregation, for all you know, I believe men and women's prisons and sports ought to be combined.