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Plasma Bloggin''s avatar

I think there are ways your views on metaethics can affect your views on normative ethics that aren't addressed here. The flaw in the argument is that it assumes everyone has some set of fundamental moral commitments that can't be changed by argument, unless they are shown to be inconsistent with other moral commitments. But that's not actually true - your views on metaethics could very easily affect what your baseline moral commitments are. Any theory about what moral facts are is probably also going to tell you a lot about what the contents of those moral facts is. In the article, you mentioned cultural relativism as an example of a metaethical view that also affects what you believe is right (since it implies that surveys could be used to determine what's right), but I think this is a much more general feature of almost all metaethical views.

There's also the problem that, if your moral commitments are shown to be inconsistent, you have to decide which way to update them. If there's no objective fact of the matter as to which view is correct, then you'll probably just update them in whatever way is most convenient to you - why not? - and you won't need to worry about having a weird and ad-hoc collection of moral commitments, with a bunch of unjustified exceptions. After all, your set of commitments isn't a theory about what's actually true, so you don't need to worry about factors like Occam's razor. You can just make them consistent in whatever way you feel like (unless you hold to something like societal relativism, but that affects your object-level moral views in other ways and also allows them to be ad-hoc as long as society follows ad-hoc rules, which it does).

On the other hand, moral realists are much more likely to have a theory as to exactly what makes an action right or wrong, since they actually believe there is a fact of the matter about this, and Occam's razor tells them the true theory is likely to be fairly simple. They're not going to accept new moral rules or ad-hoc exceptions if they don't think there's epistemic justification, and since convenience isn't a guide to truth, they won't change their moral beliefs to make them more convenient.

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Philip's avatar

I think you're conflating preference inconsistencies and non-ethical belief inconsistencies in the case of Antoinette.

Suppose moral anti-realism is true. Then there's nothing inconsistent if Antoinette prefers (sentient creatures harmed & I eat chicken) > (sentient creatures not harmed) > (sentient creatures harmed & no chicken for me). It would only be inconsistent if Antoinette prefers (sentient creatures are not harmed) > (sentient creatures are harmed & I eat chicken), but she still eats the chicken. But pointing out this inconsistency is not in the domain of ethical reasoning! The operative question becomes whether or not chickens are sentient creatures.

On anti-realism, it appears any so-called preference inconsistency will ultimately reflect a mistaken belief about the natural world, leaving no space for ethical reasoning.

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