>>778I don't share your notion of "philosophic success" though it's a very interesting question and might merit a thread of its own.
You seem to expect philosophy to yield results in the shape of answers, or at least to only ask questions that can definitively be answered, regardless if they already are or not. To me, philosophy is a lot more about questions, the plurality of efforts to address the same one being part of what makes it so interesting. Naturally most, if not all, attempts will be seriously flawed, but that doesn't make them inhrently worthless. Isms are a reductionistic but nonetheless useful way to distinguish between different approaches or different premises. I dono't think a puristic "no isms allowed" attitude would be particularly better off, though I may misunderstand your point.
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What I meant was that the veracity of one "moral sentiment" over another is indiscernable. As such, they are equal in terms of claims to veracity. But such a claim need not be made, since relativism either dismisses the notion of veracity completely, or makes that call based on egoism. The latter still doesn't make a "ranking" based on veracity, though. Nor does it necessarily dismiss the notion of veracity, it just deems it inaccessible or immaterial.
It's very possible to consider moral sentiments incomparable to each other because they themselves are meaningless. In that case it is futile to talk of veracity in the first place, but even then you could relate every moral sentiment to the same thing it has no part in. We are both equal in a lot of negatives, that equalises us in relation to those. But that obviously doesn't mean we are identical.
Perhaps my wording was misleading. It doesn't so much deny supremacy, but deny the potential to determine supremacy, as such it denies the relevance of supremacy when it comes to moral sentiments. It's a dismissal, and though there might be a strong case against the usefulness of such a dismissal, it seems to me nonetheless a valid stance when confronted with the question of moral relativism.
Finally, I said only that the veracity of one moral sentiment over another (basically implying veracity of any moral sentiment) is dismissable. That would make them morally irrelevant, since relativism does not ncessarily have a perception of discernable (objectivistic) truth. I naturally bring this up because there is often the unspoken assumption that morality is linked to truth, which I don't think is a necessary connection, but is one that no.560 made when stating relativism as meaning "all moral views are 'equally true'".