lukeprog gave a list of metaethics questions here:
What does moral language mean? Do moral facts exist? If so, what are they like, and are they reducible to natural facts? How can we know whether moral judgments are true or false? Is there a connection between making a moral judgment and being motivated to abide by it? Are moral judgments objective or subjective, relative or absolute? Does it make sense to talk about moral progress?
Most of these questions make no sense to me. I imagine that the moral intuitions in my brain come from a special black box within it, a "morality core" whose outputs I cannot easily change. (Explaining how my "morality core" ended up a certain way is a task for evo psych, not philosophy.) Or I can be more enlightened and adopt Nesov's idea that the "morality core" doesn't exist as a unified device, only as an umbrella name for all the diverse "reasons for action" that my brain can fire. Either perspective can be implemented as a computer program pretty easily, so I don't feel there's any philosophical mystery left over. All we have is factual questions about how people's "morality cores" vary in time and from person to person, how compelling their voices are, finding patterns in their outputs, etc. Can someone explain what problem metaethics is supposed to solve?
I agree but with some spin control.
This is key. I like to say that we play logic with a stacked deck. We've dealt all the aces to a few logical rules. This doesn't mean that logic isn't in some sense absolute, but it removes any whiff of theology that might be suspected to be attached.
True, but there is more to being logical than just following linguistic convention. The philosophers' classic "tonk" operator works like this: From A, one is licensed to infer "A tonk B". From "A tonk B" one is licensed to infer B. Luckily for language users everywhere, there is no actual language with these conventions.