Cisness, in contrast, has no material basis of its own, only the one it attains via its imbrication in sexual difference. This may sound counterintuitive, because the ideology’s relation to the physical structure of our bodies produces the impression of a real basis in chromosome, flesh, follicle, hormone, muscle, and organ. But consider the following concrete, material example: a vagina is a structure composed of skin, mucous membrane, muscle, and other tissues. Its functions are real, are important, and require attention. Further, the possessor’s relation to this structure is so laden with ideology that she might feel, even on the highly affecting level of sensation and bodily self-awareness, that this structure actually grounds her sex identity. In the negative, she may experience her vagina, for example, as the source of her body’s vulnerability to rape. But we know that vaginas, in themselves, are no more vulnerable to or inviting of sexual assault than other bodily structures that can be penetrated. We know this because people without vaginas are also vulnerable to rape and disproportionately so, according to certain group-forming attributes. Transwomen, racialized people, gay men whose gender expression communicates (or is interpreted as) effeminacy, incarcerated people, enslaved people, workers in a subordinate labor position, children, disabled people, people who are economically precarious and/or experiencing homelessness, sex workers, gender-nonconforming and trans masculine people whose trans status is known or has been revealed: all of these populations are disproportionately vulnerable to rape and are not categorically defined by having vaginas. What is the quality that explains this disproportionate vulnerability across these vastly disparate social categories among people with all forms of genitals and combinations of secondary sexual characteristics? The answer to this question is the rapist’s perception of their victim as actually, properly, or potentially socially positioned as powerless. This social positioning is then reinforced in its relation to the feminine through the use of the tactic of sexual assault with its historically produced relation to the feminine. That is to say, the production of disproportionate vulnerability to assault is the rapist’s enforcement and reproduction of the ideology of sexual difference. This social positioning has defined the category woman historically, but its effects have never been limited to those assigned female at birth, to those who identify as women, or even to those socially recognized as women.
Emma Heaney, "Introduction: Sexual Difference Without Cisness" Feminism Against Cisness, pg 11-12.














