↪javra
That's not germane here. You can see my opinion in other threads.
Not at all. It's based on sentiment. — Wayfarer
Yep. Scientism as a faith. — Banno
If you say so. Still, to make my former point a bit clearer, in the absence of an “is” which grounds our “oughts”, all systems of ethics can be decried as sentimental—this rather than rational. One could for example apply Hume’s guillotine even to virtue ethics: the difference between concrete instantiations of “what virtue is” (which, to be clear, can be as relative as anything else) versus “what virtue ought to be”, the latter so that one might for instance become more virtuous than one currently is. The first will not ground the second, except via sentiment—i.e., except via emotion rather than reason—not when there’s a complete absence of something like The Good being a globally existential “is” toward which one should aspire, in this case so as to gain greater virtue.
Why I brought this up: While the OP poster's arguments are full of gaps in what he has so far written, his general outlook appears to me to lean toward the virtuous, or else to aspire toward it. I want to cut
@Seeker25 some slack, and am point out that the argument of Hume’s guillotine to too broad in that it applies to all ethical systems devoid of an ultimate objective Good that existentially is.
I don’t sponsor his arguments so far, but, to try to take his side, here is a trivial example of how evolution and ethics can converge:
Consider three possible types of ice-cream: a) ice-cream comprised of cyanide, b) ice-cream comprised of dirt, and c) ice-cream comprised of nutrients. Type (a), (b), and (c) otherwise all have the same delicious flavor to our tastebuds due to the latest innovations in chemistry. Save for death-yearning folk and their ilk, all will readily deem the consumption of (a) unethical—one would not be virtuous to give it to another so that they might trustingly eat of it, for example. As to those who knowingly choose to eat it, evolution selects against their being, leaving only non-cyanide consuming humans behind. Type (b) is not as bad, for it does not kill. But your and your friends’ indigestion upon eating it will in effect be a reduction of health, and hence of eudemonia (wellbeing). Whereas type (c) will not be unethical to consume whenever the cravings for a moderate amount of ice-cream emerge. All this by way of who we are due to the forces of natural selection which has shaped our current being.
There are certain human behaviors—say the gleeful perpetuation of genocides against the Other, gross misinformation that destroys all trust in what is real, the launching of nuclear weapons in today’s world, etc.—which in many ways parallel ice-cream type (a): they lead to the destruction of life. Other human behaviors, like the addiction to substances, will parallel ice-cream type (b): they will not kill but will reduce general wellbeing. And certain human behaviors can be likened to ice-cream type (c): they will improve wellbeing when acted out in their own proper contexts. Behaviors (a) will be unethical, behaviors (b) will be less than ethical, and behaviors (c) will in its proper contexts be ethical. And all this will be bound to the evolved forms of life that we are and to the very evolutionary constraints that has led to our current being as humans. Yes, there’s competition in nature, and the competition piques our interest generally, but there is far more cooperation in nature which is usually taken for granted in full: for starters, every multicellular organism is a cooperation between individual living beings we call somatic cells. (Place an individual somatic cell in a pastry dish with sufficient required stimulation and nutrients and it will live out its life just fine—I’ve at least been told this is the case for neurons.)
Ok, I thoroughly grant that to claim all this as some sort of definitive grounding for what ethics is and what ought to be would be fully sentimental, rather than rational. But behind this sentiment there is yet some inkling of convergence between evolution and ethics: the destruction of our species from within or else from without we deem not good and hence unethical (well, most sane people do), and there is little denying that natural selection has selected for this in us humans over eons. But natural selection is not an omnipotent god that determines all aspects of what we do. And if our species does become destroyed, natural selection will continue doing what it has always done: select for life that best conforms to its ever-changing contextual realities, which sapience tends to excel at (at least when its head isn’t buried in a donkey’s behind).
And evolution doesn’t operate on bodily physiology alone; it works on the behaviors of life galore.
Again, this isn’t an argument I will defend tooth and bone, but I do want to cut
@Seeker25 some slack here. And preliminarily chopping down his arguments by evoking Hume’s guillotine and thereby decrying it as sentimental is overkill—in that Hume’s guillotine equally applies to all appraisals of ethics which do not incorporate an objective Good that is and that is to be aspired toward.