Just reading threads about trans rights and feminism, which seem to rely on whether or not trans women are women. I want to reply this to all of them so I thought I'd create a post.
There are two different definitions of women in play:
"Women" is a social construct and so a woman is defined on the basis of how she socially identifies.
"Woman" is an adult human female and a woman is defined on the basis of biological features.
Both these viewpoint have an evidence base supporting them and so are valid. Both are based on an individuals opinion of which definition they prefer.
There is a trend to say it is "transphobic" to be of the second viewpoint because it excludes trans women. It isn't transphobia. The second view point is in some ways a more evidence based definition than the first, because it relies on observable facts and truths that apply throughout nature.
Trying to start a debate with "the other side" from either of those two viewpoints is going to be a hiding to nothing. Let's not do that.
Similarly focusing on areas where the viewpoints are inevitably going to clash will just end in argument as both sides defend their opinion (trans women providing intimate care to female patients for example).
It is far more productive to recognise those view points and what they lead to and see how and where that can be accommodated comfortably by both sides and build out from there.