There's some confusion in this discussion.
What I think PixyMisa is saying is that some moral questions aren't objectively meaningful. I do think they're meaningful, but they're subjective and not descriptive.
I can work on a definition of "wrong", but it would rely on a set of personal opinions and maybe heuristics on how to solve my conflicts and my interaction with the rest of the society, all of which ultimately depends on my preferences. To sum up, wrongness doesn't exist independently of our brains. I only can be meaningful with "right" or "wrong" when I confine it within myself as an individual.
Of course science can't answer rightness and wrongness, or "shoulds", as if they were meaningful. Not all the words we use have to be objectively useful. People like Sam Harris are too obsessed with this triviality and rush to claim victory for science in one of the most inane endeavors I remember from a public intellectual. No, thanks. Science works precisely because it has some restrictions: it's about the objective reality.
Well, yes.
Now within
- Metaphysical materialism
- Logic, but no over-reductive logic (and math)
- Epistemology; empiricism, skepticism, no rationalism and no foundationalism
there are still 3 related, but separate kinds of computation as processes in a brain and <beep> the mind/consciousness because that leads to nothing but woo
- Observation or rather sensation through the senses.
- Objective thinking (logic, math and rational descriptions).
- Subjective evaluation of right/good/useful and wrong/bad/useless.
Now they are all material and requires a brain/body, but they can't be reduced down to only one kind of right or wrong.
That is it and all this jazz about objective, rational, logic, observation and objective evidence overlooks the 3rd kind of right or wrong.
If we are to be honest, we can't avoid subjective evaluation. We can avoid God and all the rest of the woo, but we can't reduce all down to logic, rational and objective observation and evidence.
You are irrational if you think that is possible.
So for the claim -
You are wrong - depends of what kind of wrong, we are dealing with. And yes, people can be in a sense wrong about observation, logic, being rational and all that. But people can never be wrong about morality and ethics, because that is not something they are or do. That is something you think/feel!!!
I am looking at you, PixyMisa and your "we know, that you are wrong". You can't know that another human is wrong or right in a moral/ethical sense, because you can't know this through observation, logic and/or rationality. You only know moral/ethical right and wrong based on how you think/feel. It is subjective and can't be made purely objective. If and only if you believe that you can do morality/ethics purely objectively, you are irrational.
You can learn to do morality/ethics differently through indirect means based on science, philosophy and all that; i.e. it can inform you differently than if you don't use it, but the Holy Grail of purely objective methodology is not possible for all of reality.
