As someone who hasn't read the works of radical feminists like Simone de Beauvoir, could you explain what's wrong and what bothers you about biological essentialism? I'm curious about your opinion after reading your post on radfems (and I'd like a perspective that isn't so based on biological gender essentialism, which I honestly have a hard time moving away from because I don't understand other perspectives well). 👀
The problem with biological essentialism is that purports to answer the eternally unanswered question of nature vs nurture in a wholly one-dimensional way - ie, with biological sex as The Single Most Important Aspect Of Personhood, regardless of any other considerations - while simultaneously ignoring the fact that biological sex is not, in fact, a binary proposition. We've learned in recent decades, for instance, that intersex conditions are much more common and wide-ranging than previously thought, not because scientists have arbitrarily changed the definitions of what counts as an intersex condition, but because our understanding of hormones, chromosomes, karyotpying and other physical permutations has expanded sufficiently to merit the shift. So right away, the idea that humanity is composed of Biological Men and Biological Women with absolutely no ambiguities, overlap or middle ground simply isn't true. Inevitably, though, if you mention this, people with a vested interest in biological essentialism become immediately defensive. They'll start saying things like, oh, but that's only a tiny minority of the population, they're outliers, they don't count, as though their argument doesn't derive its claim to authority from a presumed universality. To use a well-worn example, redheads are also a tiny minority of the population, but that doesn't mean we exclude them when talking about the range of natural human hair colours. But the fact is, even if humans lacked chromosomal diversity beyond XX/XY; even if there were no cases of cis men with internal ovaries or cis women with internal testes or people with ambiguous genitalia - and let's be clear: all of these things exist - the fact is, our individual hormones are in flux throughout our lives.
There are standard ranges for estrogen and testosterone in men and women (which, again, vary according to age and some other factors), but two cis men of the same age and background could still have completely different T-counts, for instance - meaning, even the supposed universal gender factor isn't universal at all. More, while our hormones certainly play a major role in our moods and cognition, so do a ton of other genetic and bodily factors that have nothing to do with the sex we're assigned at birth - and on top of that, there's nurture: the cultural contexts in which we're raised, plus our more individual experiences of living in the world. One of the most common, everyday (and yet completely bullshit) permutations of biological essentialism comes when parents or would-be parents talk about their reasons for wanting a son or a daughter. Very often, there's a strong play to stereotypical assumptions about shared interests and personalities: I want a son to play football with me, for instance, or: I want a daughter to be my shopping buddy. But even within the most mainstream channels of cishet culture, it's understood that these hopes are not, in fact, grounded in any sort of biological certainty. The dad who wants a sporty son might be just as likely to end up with a bookworm, while the mother who wants a little princess might find herself with a tomboy. We know this, and our stories know this! For the entirety of human history - for as long as we've been writing about ourselves - we have records of parental disappointment in the failure of this child or that to embody what's expected of them, gender-wise. More than that: if biological essentialism was real - if men were only and ever One Type Of Man, and women were only and ever One Type Of Woman, with recent progressive moments the sole anonymous blip in an otherwise uniform historical standard - then why is there so much disparity and disagreement throughout human history as to what those roles are? The general conception of women espoused in medieval France is thoroughly different to that espoused in pre-colonial Malawi, for instance, and yet we're meant to believe that there's some innate Gender Template guiding all human beings to behave in accordance with a set, immutable biological binary? And that's before you factor in the broad and fascinating history of trans and nonbinary people throughout history - because despite what TERFs and conservative alarmists have to say on the matter, our records of trans people, and of societies in which various trans and nonbinary identities were widely understood (if not always accepted), are ancient. We know about trans priestesses from thousands of years before Christ; the Talmud has terms describing eight different genders, and those are just two examples. All over the world, all throughout history, different cultures have developed radically different concepts of femininity and masculinity, to say nothing of designations outside of, overlapping with or in between those categories - socially, legally, behaviourally, sexually - and yet we're meant to believe that biology is at all times nudging us towards a set, ideal gender template? There's a lot more I could say, but ultimately, the point is this: people are different. While some aspects of our personhood are inevitably influenced by genetics, hormones, chromosomes and other biological factors, we're also creatures of culture and change and interpersonal experience. The idea that men and women are fundamentally different, even diametrically opposed, at a biological level - that the major separator in terms of our personalities and interests isn't culture, upbringing and personal taste, but what's between our legs - is just... so reductive, and so inaccurate.
We can absolutely have common experiences on the basis of a shared gender, but gender is not the only possible axis of commonality between two people, let alone the most salient one at all times, and the idea that we're all born on one side of an immutable biological equation that cannot possibly be transcended makes me feel insane. According to modern biological essentialism, intersex, trans and nonbinary people are either monstrous, mistakes or imaginary; all men are fundamentally predisposed to violence, all women are designed for motherhood, and we're meant to just hew to our designated places - which, conveniently, tend to echo a very specific form of Christian ideology, but which in any case manifestly fail to account for how variedly gender has been presented throughout history. It's nuts.