"One of the big things we talk about, in trans feminism, is the concept of “gender identity”– the subjective internal sense of oneself as male, female, or nonbinary. Trans people are people whose gender identity doesn’t match their gender assigned at birth; cis people are people whose gender identity does.

But the thing is… I think that some people don’t have that subjective internal sense of themselves as being a particular gender. There’s no part of their brain that says “I’m a guy!”, they just look around and people are calling them “he” and they go with the flow. They’re cis by default, not out of a match between their gender identity and their assigned gender.