Not if I have independent reason to think that ‘everything necessary and sufficient to conclude an imperative’ is a reason, which I think I do.
In your example (4) is the weak spot. You’re making a remarkable wide and strong claim—one common in logical exercise but impossible to make in reality.
To be absolutely clear: the above is an empirical claim. Something for which we need evidence on the table. I’m indifferent to this claim, and it has no bearing on my point.
My point is just this conditional: IF (1)-(4) are true of any individual, that individual cannot rationally reject (C).
You might object to the antecedent (on the grounds that (4) is not a claim we can make in practice), but that’s different from objecting to the conditional. If you don’t object to the conditional, then I don’t think we have any disagreement, except the empirical one. And on that score, I find you view very implausible, and neither of us is prepared to argue about it. So we can drop the empirical point.
Not if I have independent reason to think that ‘everything necessary and sufficient to conclude an imperative’ is a reason, which I think I do.
To be absolutely clear: the above is an empirical claim. Something for which we need evidence on the table. I’m indifferent to this claim, and it has no bearing on my point.
My point is just this conditional: IF (1)-(4) are true of any individual, that individual cannot rationally reject (C).
You might object to the antecedent (on the grounds that (4) is not a claim we can make in practice), but that’s different from objecting to the conditional. If you don’t object to the conditional, then I don’t think we have any disagreement, except the empirical one. And on that score, I find you view very implausible, and neither of us is prepared to argue about it. So we can drop the empirical point.