And as I point out, those common elements appear identical to the structure derived from my "symmetry" approach.
While all arbitrary Oughts are arbitrary, they all contain non-negotiable features from which further study may be made through abstraction.
In this way, the relative features can be reduced to simply being a local standard of the "harmlessness" which consent would be required for exceeding, and the failure to allow consensual activities that do not direct higher than that risk of harm outward is simply a feature itself is a harm, specifically the one featured in our sensibilities about fascism.
Ideally, relativism is only a necessary element because of how harmless we all know we aren't and can't be, because some situations end up zero-sum. This is, I think, the idea behind "all are sinners". So we muddle through and forgive the small stuff because if we didn't, we wouldn't survive.
How do you account for moral obligations to non-reciprocating beings?
NHC
"That which denies the rights of another thing denies those rights for itself".
In according to all physical forces rather than restricting those to harmless outcomes, they deny the rights of others to be unharmed.
They can't recognize my personhood so it lacks personhood from my perspective, whereas I and "people in general" are on the lookout for it.
It also is specific to a survival group dedicated to horizontal transfer and support; anything outside that regime puts itself outside the protections of the system of symmetry by degrees owing first to mercy.
As pointed out by
@Bronzeage elsewhere, though, "food" remains a zero sum game for every system, and there is nothing "moral" of the food chain.
This is actually one of the reasons I think humanity needs to move off of meat and onto silicon, to build civilizations at legrange points in space, and simulate any planetary and physical life which we wish to experience, or to make it possible to commute between meat and metal ala "Altered Carbon"; it is ethical to eat the emissions of a star, most certainly, and to participate in life we make such as it wishes to be as it is.
Still, the cow is not so capable at being as "Neo-Lamarckian" as is required to truly break from things such as the sexual slavery of a heard of cattle to a single bull in the wild, for instance. There is no grand and expansive bovine language or culture, no grand bovine inventors or thinkers or philosophers, and there haven't ever been, best we can tell. It's a system that's on some end of the scale where if the mechanisms of technological capability exist across the entirety of the species, none are proximal enough to the others to really keep "the flame" going.
If apes are a population that occasionally sees limited "fire of the mind" owing to proximity of fuel, heat, and oxygen, metaphorically speaking, humans are fields of bales of hay on a dry, hot day with the wind blowing gently, all out in the open sun: fires happen frequently, for all spontaneous combustion is still fairly rare.
So I feel less bad about not trying to be Prometheus and ignite the bovines with the fires of language and the ability to participate and grow... Mostly because leather and beef and milk. If we can figure those things out, maybe then we can work on connecting cows to the benefits of ethics?
It's not that we can't have empathy... But I say this elsewhere: if my empathy can only be held in the frame of roleplaying the person I'm considering as a
Nazi, then I'm going to use that act of empathy as a good reason to apply that "they decided to be unreasonably harmful against consent" as a reason to think "they have set their bar of harmfulness high enough that I have the right to return force or the threat of force."
Bulls infamously set the bar of harmfulness very low for others, and very high for themselves, to the threat of dismemberment and death for being anywhere nearby, after all, indicating that if they are going to proclaim violent contest, that they will "fuck around and find out".
Of course, many other species could be used in exchange of bovines, and farming is still gross and I wish we could quit it, but this does provide a general view of the breakdown in ethics of a non-reciprocating species or agent as far as how it seems to work on practice.
That said, we could be a LOT less gross with how we farm things, and with sufficient technology, we can invent our own species which actually enjoy their existence as food, and that's probably on the horizon.