I would add that I am trying to explore the ideas around essentialism, relating to gender and sexuality. — Jack Cummins
To what extent are men and women different, or what it means to be a man or woman and how this question is explored introspectively? — Jack Cummins
I haven't read the other thread from which your OP comes, so forgive me if any territory was already covered.
"Male" and "female" are simply words people use. There are many others, of course, but there is no inherent content in a word (be it uttered or written) or grouping of words. In simplest form, we understand meaning (and attempt to convey it) in words by virtue of context - where/when the word is used, by whom it is spoken, to whom it is directed, the language community within which it is used, etc.
"Biology" is no different than any other word. Some people mean one thing, other people understand something else, and the world turns. In this case, we are talking about essentialism - what is it, from a biological perspective, that justifies including some organism in group A and excluding them from B? Essentially, the biology split between male and female is in the context of sexual reproduction: it hinges on what an organism contributes to its offspring: males provide the smaller gamete while females provide the larger gamete. In this way, the use of male and female regarding a specific reproductive act is unambiguous.
Where biology becomes increasingly ambiguous is the extent to which the use of "male" and/or "female" is abstracted away from a particular reproductive act. On the first level, organisms that contribute the larger gamete exclusively are female, organisms that contribute the smaller gamete exclusively are male, and organisms that contribute both are hermaphrodites. On the second level, organisms are grouped together - those have reproduced with one another are in the same group (species) while other organisms that have not reproduced with them are not in the group. On the third level, the criteria for group membership is expanded - organisms that are the offspring of the reproducing organism/s (parent/s) are added to the group irrespective of whether the offspring will ever reproduce. Not just are offspring added, but so are other organisms that are believed to be similar to the reproducing organisms (e.g. siblings of the parent/s). Whatever the structural account of how gametes (large or small) are made (e.g. gonads), species members that have the structural potential of making large ones are called called female, those capable of producing small ones are male, and those that have the potential to do both are hermaphrodites. The move here (rather than the particular steps) is what is at issue - the act of reproduction and naming the participants (by class) turns into naming other non-participants by abstraction. The question is, what characteristic makes the use of "male" or "female" warranted in the case of an organism that either has a) not yet reproduced or b) is incapable of reproduction (e.g. injured such that gonads are non-present or non-functional). Putting aside the taxonomical issue of what a species is, at some point characteristics of the organisms aside from contributing the larger or smaller gamete begin to be considered - those characteristics that are found with greater frequency (or exclusively) in males than in females (and vice versa) are then deemed "male".
The utility in associating other characteristics with potential gamete contribution (even if a factual impossibility) varies. Sometimes it is helpful in describing anatomy, sometimes it is helpful in predicting a disease process, etc. Each of the extended uses of "male" and "female" need to be evaluated on their own merit (do they convey any substance in an acceptable manner). The biological use case of "male" and "female" are not, however,
prescriptive, rather they are
descriptive of statistically meaningful trends (i.e. characteristics that occur with sufficient frequency). Equally important, they are not statements of "natural law" (i.e. a limitation on how the natural world might be).
Where the difficulty arises, in my mind, is when people try to subsume the biological underpinnings of sex (gamete contribution) and speak as if the correlative characteristics are what is essential to the biological categorization. I grant to you in advance that the words/concepts of male and female preceded biology and that how sexual reproduction happens is utterly irrelevant to the development of those ideas/words outside of a more contemporary biological understanding of sex. It is precisely this type of co-development that ends up causing confusion about what "essentialism" can even mean because the great weight of history and historical uses is against the contemporary technical usage of a word.
From my perspective, discussions of biology in conversations about sex/gender are really just rhetorical devices - appeals to authority to validate a person's claims. In large part, this relates to something another poster alluded to (
whose name I might add later when I look it up it was you) when mentioning the hardware of anatomy and whether such anatomy fundamentally dictates/limits experience/preference. If, for instance, you haven't a certain part of your brain, is there some essential difference between you and a person that has that part? If having that part of the brain is highly correlated with being in the biological bucket of male, then aren't males essentially different than females? Does a single example of a male not having that part of the brain or a female having it change whether that feature is essential to male/female?
The inclusion criteria for what is male/female from a biological perspective is never the same as the essential criteria being discussed - we know in advance that there is almost certain to be less than a perfect correlation (every male has it and every female does not). It is, therefore, a foregone conclusion both that any alleged claim regarding an essential characteristic will have exceptions and that the person making the claim will ignore those exceptions.
Once we have some understanding (if not agreement) about what we mean by "essentialism" from a biological perspective, we can take up how it relates to your areas of interest. Suffice it to say, I am sympathetic to gender being performative and society enforcing/teaching individuals how to play the part (even if that part changes over time). In the same way that society molds our desires and identities with everything else (need for chocolate, being Scottish), it should come as no surprise that people believe that sex/gender is a core, immutable part of their identity that is actually based in their very being (biology).