There are numerous forms of marginalization that exist in our society: , classism, sexism, , heterosexism, and so on. If you happen to be on the wron… - Julia Serano

Once a person acknowledges that they possess some form of privilege, they are more likely to accept the reality that they are not in any way objective about the form of marginalization in question

As a trans woman, I will be the first to admit that I cannot possibly know what any other woman experiences or feels on the inside. But the thing is, the trans-women-aren’t-women crowd cannot possibly know what any other woman experiences or feels either! Every woman is different. We share some overlapping experiences, but we also differ in every possible way. Every trans woman I know acknowledges this diversity. In contrast, it’s the cis women who attempt to exclude us who seem to have a singular superficial stereotypical notion of what constitutes a woman, or of what women experience.

People tend to harbor essentialist beliefs about sex — that is, they presume that each sex category has an underlying "essence" that makes them what they are. This is what leads people to assume that trans women remain "biologically male" despite the fact that many of our sex characteristics are now female. However, there is no “essence” underlying sex; it is simply a collection of sexually dimorphic traits. Some people will presume that sex chromosomes must be this "essence," even though we cannot readily see them, plus there are non-XX or XY variants. Others presume that genitals are this "essence" (probably because they are used to determine our birth-assigned and legal sex), although they can vary too, and may eventually change (e.g., if one undergoes sex reassignment surgery). In day-to-day life, we primarily rely on secondary sex characteristics to determine (or more precisely, presume) what sex a person is — and of course, these traits may change via a simple hormone prescription. Like I said, there is no mystical “essence” underlying sex.