Do you, on the one hand, believe that things have natures that they can realize to live a happy life (as you describe with Epicurus) or do you deny the reality of natures altogether? This seems internally incoherent to me. — Bob Ross
I deny that men or women have natures, that sex has a nature, and that gender has a nature but I think the concept of a human nature workable. And I wouldn't put "nature" in terms of "essence" either.
I don't believe in universal criteria for inclusion in a set, such as necessary and sufficient conditions, which specifies what a thing is.
But there could still be a use for "nature" in our thinking even if we're not adopting Aristotle's ontology.
I am not arguing that we can know everything about the nature of something at first glance: we’ve impacts the natures of many things over many thousands of years. It’s an empirical investigation: it is not a priori. — Bob Ross
You are arguing you can know the ends of things, though. Their teleology. Yes?
If that can come to be known over time then by what means do we infer the teleology of organs as you have?
This is the thing I'd deny empirical investigation can really do: We utilize teleological notions in biology but they're an organizing apparatus more than the ontology of speciation. Rather all we can do is describe -- at least if we play Hume's Guillotine.
If we do not then
Ok. We aren’t discussing the ethics involved in the medical industry nor what should be the ethic there: we are discussing what gender and sex are. I think you are jumping to my ethical views on sexuality when I have not imported it into the OP’s discussion. — Bob Ross
... it was explicitly your description of the anus' teleology that got me started on this line of thinking.
Likewise, Epicureanism may be an alternative: we would have to explore that; but it definitely doesn’t seem coherent with nominalism (which you accept since you reject essentialism).
This is your Argument 1. There is either Realism or Nominalism. Nominalism is not tenable, ergo Realism.
Epicurus' epistemology is one of direct realism. It's a naive epistemology with respect to the critical turn in philosophy heralded by the Enlightenment thinkers. I don't agree with it in specifics, though I think it's harmless in general -- its' major fault is shared by all other philosophical theories in that it is wrong.
I'm not claiming nominalism. I'm speaking in my own words and not as part of a category of people with such-and-such beliefs well known, unless nominalism really is nothing but the belief that essences do not exist.
I would say that we possess knowledge, though -- it is provisional and not ontological, but still knowledge of what's real. In that vein I think the poetics of Epicurus' ontology get along with what we know about the universe at present. But that's not the sort of knowledge which the Epicureans would have claimed -- they claimed to have the truth that all of reality is atoms and void.
Which I take ontology to be: not real but rather a poetics that allows us to comprehend and bring sense to the real. It does not encompass all of reality and we cannot deduce things about reality from our categories. However we define our terms the reality of things will always slip beyond our categories such that we cannot have deductive knowledge of the real, but rather provisional knowledge.
But that means the sorts of claims we find in Aristotle, Epicurus, the Stoics, the neo-Platonists, and on forward which make claims about reality as it really is cannot be treated like we know them. They're just ways of organizing what we know into sense for ourselves so that the absurd is manageable.
So, anti-realist with respect to ontological commitments, but realist with respect to reality, anti realist with respect to essences, realist with respect to nature, and explicitly agnostic with respect to ontology: Not only is it not known, but due to our position it cannot be known.
So sex, gender, and boning under this umbrella: Speciation roughly follows Darwinian evolution because some molecules formed at one time that started to self-replicate. Natural selection took care of the rest. Sexual reproduction is a method for mixing up genes, however that's done. There's no "natural" sex as much as there are methods for swapping genetic information such that the next generation has a mixture of genes. Male/Female is a rough, metaphysical speculation which we utilize to understand this infinitely complicated process.
Gender is social and inter-social and inter-personal and personal. Sex is our metaphysical belief about others' biology, and gender is the identification one has in all the previously designated senses. It functions as a means for understanding one's role, understanding one's place within a community, understanding what desires are acceptable and what are not acceptable for the kind of gender you have, understanding the sorts of desires that are had by said gender, all in order to then enact it within the social dance. This social dance is real, note -- not essentially so, but as real as you and I talking right now. People perform gender.
The important thing to note here is that does not then mean:
Well, it wouldn’t be real; because reality is objective, and socially constructed ideas are inter-subjective (even if they are expressing something objective). — Bob Ross
Since there's no underlying reality which defines the perfect specimen of a genus the performance is all there is to it: the surface is expansive and deep, but not undergirded by a purpose or soul. Rather it's something that arises naturally through coming to learn how to act with others: socialization.
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So I'm definitely taking the critical turn more seriously than the neo-Thomists are. And without some way to specify how natures are determined rather than offering a common-sense teleology it would seem to me that the neo-Thomists aren't so much overcoming the critical turn as ignoring it and stubbornly continuing in their tried ways.