Proposition one states that the position of Individual Moral Subjectivism falls under the meta-ethical framework of cognitivism, which is a view in philosophy that ethical statements express propositions. A proposition is simply a statement which is capable of being true or false (it has truth value; is truth apt). — Cartesian trigger-puppets
Yes, I know. But I didn't say 1 was false, did I? I said 2 was false.
You're building a commitment to moral realism into individual moral subjectivism. That's just confused.
So what I am proposing is that moral statements such as "Genocide is wrong" express a proposition similar to non-evaluative statements such as "The sky is blue". I'm saying that both these kinds of statements have the property of being either true or false. — Cartesian trigger-puppets
I know. This is not in dispute. Individual moral subjectivism, moral naturalism and moral non-naturalism all take moral statements at face value: that is, as truth-apt propositions.
What they are not committed to is the claim that some of those statements are true. That's an additional claim, one that then makes the relevant subjectivist, naturalist or non-naturalist into a 'moral realist'.
The theory that water is made of tiny molecules is not equivalent to the theory that some water exists. The theory that unicorns are horse-type creatures with naturally growing spirally horns coming out of their foreheads is similarly not a theory about what exists. And the theory that moral properties are reducible to an individual's subjective states is also not a theory about what exists.
Realism also makes the claim that moral statements have a truth value, and that some of those truth values are true, but, in addition, realism also claims that such truth values exist objectively, as in a mind-independent property of the world. — Cartesian trigger-puppets
No, you're conflating moral realism with objectivist moral realism. Look, this is all just a labelling matter of no importance to the issues under debate. But we might as well get clear about how to use these terms.
Moral objectivism is the view that the truth conditions of moral statements are objective properties of some kind or other. Naturalism and non-naturalism are both kinds of moral objectivism.
Moral subjectivism is the view that the truth conditions of moral statements are subjective properties of some kind or other. Individual subjectivism, inter-subjectivism and divine command theory are all kinds of subjectivism.
Moral realism is the view that some moral propositions are true. So you can have individual subjectivist moral realism, inter-subjectivist moral realism, divine command moral realism, naturalist moral realism and non-naturalist moral realism.
The reason you're conflating moral realism and moral objectivism is that most contemporary moral realists are also moral objectivists. Why? Because individual and inter-subjectivism are stupid views that no-one who knows their beans takes seriously.
Now, I stress that all of this is really beside the point. For these are just labelling matters. This is what matters, what the OP is about, and what you need to address:
Individual and inter-subjectivist views about morality are stupid (as is generally recognized among the experts, but not among the public). Why? Because moral norms do not appear to be norms we ourselves are issuing. The view that they are, in fact, norms we ourselves are issuing is as stupid as the view that the outside world is a figment of one's imagination.
The same applies to non-cognitivist or expressivist views. Expressing a subjective state is a different linguistic activity to describing it. But the same information is conveyed. As with individual subjectivism, there is simply no evidence that expressivist views are true, and plenty that they are not. Those who endorse them do so because - by their own admission - they lack moral intuitions (and this, combined with staggering arrogance, then leads them to conclude that we're at root expressing ourselves when we use moral language, not attempting to describe the world).
Moral Naturalist views are stupid too, because it is stupid - indeed, insane - to think that the natural world can issue instructions to us and value things.
Moral non-naturalist views are equally stupid, perhaps even more stupid. For it is equally insane to think that non-natural properties can issue instructions to us and value things. And to posit such things becuase one acknowledges that natural properties cannot do such things makes the non-naturalist possibly even more stupid than the naturalist.
As most contemporary metaethicists defend either some form of expressivism, or naturalism, or non-naturalism, we can conclude that contemporary metaethics is stupid. And note too, the battalions that defend these views are of roughly the same size, and so the majority of the philosophical community does, in fact, agree with me.
So far you have not said anything to address my claims. Rather you have argued that some form of individual subjectivism is true and gave two arguments. One of those was unsound and question begging. The other also had those features but even if it didn't would have established the truth of a different view from the one you were using it to defend.