then they become contingent on what is primary ... which then of course renders all subsequent conjectures that necessarily arise from them not being secondary (such as good arguments for moral/civil/judicial acts) irrelevant
Rather it becomes a matter of the level to which you wish to define as primary for practical purposes. One can do so yet still acknowledge a sub-level.
Hence one could say that a good argument has, at its core, a practical element.
Of course. It is the just a matter of whether you consider the practical level to be primary or not. In my view it is primary with regard things that operate out of consciousness, and secondary with regard the underlying machinations of the universe. Such things that operate out of the practical have no applicability at levels below, hence the validity of referring to the practical level as primary, as long as one remains mindful of the applicability of the term as used.
There is thus not necessarily an issue with one person considering the level primary, and another considering it secondary, as it just a matter of perspective.
So I see no issue, where you seem to.
Issues may arise when one ignores the difference in reasoning, and asserts the reasoning for primary on the conclusion of secondary, and vice versa. So perhaps this may explain it?
If there is no ultimate grounds for excluding them, you are simply talking about the play of things relegated to the sphere of the inconsequential.
IOW that i sthe sphere you relegate justice/morality etc
Who says there is no ultimate ground for excluding them? But beyond that, why should any
ultimate ground necessarily be primary in anything other than in defining the applicability of the outlook.
I.e. it goes back to the level at which you are viewing things.
as I said,
If you don't believe me just try and explain how you can bring ethical/moral/judicial issues to bear on someone accepted as having no higher ontological status beyond being a collection of atoms
IOW the only way you can introduce a good argument for it being wrong for one set of atoms to interact with another set of atoms (such as the atoms of a knife working its way through the atoms of a living entity's throat) is if there are very important, primary precepts about reality beyond the mere organization of atoms
And I disagree, as explained (which may be purely to what we see as the applicability of whatever is considered "primary")
What you may see as an absolute primary I may see only as primary in as much as it defines the lowest level of applicability.
So far from your posts I have assumed that you do refer to such "primary"s as being absolute / objective, but I maybe wrong in that?
And if so perhaps you would care to clarify?