It is merely a convention that we have adopted a language in which the term "astronomy" does not cover chemical facts.
I suppose that is true... but surely that doesn't render the word meaningless? In the actual world where words mean the things they mean and not other things that they could have meant in a world with different linguistic convention "astronomy" still means something like "the study of celestial bodies", right? Surely people asking for astronomical facts about airplanes, as if they were celestial bodies is a sign of confusion and ought to be gently corrected, no?
And, yet, these facts about language - these facts about the ways we define our terms - does not cause science to fall to its knees either.
Where in the world did you get the notion that I wanted science on its knees or that I thought it was? I'm as kinky as the next guy but I quite like science where it is. I'm completely bamboozled by this rhetoric. Do you take me for someone who believes God is required for morality or some other such nonsense? If so let me be clear: moral judgments are neither natural nor supernatura objectivel facts. They are the projection of an individuals preferences and emotions that people mistake for externally existing things, much as people mistake cuteness as an intrinsic property of babies when in fact it is simply the projection of our affinity for babies that makes them appear cute-to-us. That does not mean that there are not facts about moral judgments or that science is not on strong and worthy grounds when gathering such facts.
So, what are you talking about? Are you talking about morality, or are you talking about "morality"?
My chief concern in my initial comment to which you replied was getting everyone straight on what the meta-ethical terminology means. People enjoy freelancing with the meanings of words like "objective", "subjective", and "relative" and it creates a terrible mess when talking about metaethics because no one know what anyone else is talking about. I didn't have any kind of straightforward factual disagreement with the original commenter, bracketing the fact that I was quite sure what their position was and if they in fact thought they had succeeded in solve a two-thousand old debate by discovering and objective foundation for morality when they had in fact just rediscovered moral subjectivism with some choice bits of ev-psych thrown in. Note that hankx7787, at least, does seem to think Sam Harris has found an objective and scientific foundation for morality, so it seems this blustering isn't all semantics. Maybe words have meanings after all.
Here is the general form of my argument.
A person says, "X" is true of morality or of "moral judgments" in the public at large. This brings the talk of an objective morality to its knees. I answer that X is also true if science "or of "truth judgments" in the public at large. But it does not bring all talk of objectivity n science to its knees. Therefore, the original argument is invalid.
A case in point: whether somethis is moral depends on your definition of moral. But there is no objective way to determine the correct de...
Do you believe in an objective morality capable of being scientifically investigated (a la Sam Harris *or others*), or are you a moral nihilist/relativist? There seems to be some division on this point. I would have thought Less Wrong to be well in the former camp.
Edit: There seems to be some confusion - when I say "an objective morality capable of being scientifically investigated (a la Sam Harris *or others*)" - I do NOT mean something like a "one true, universal, metaphysical morality for all mind-designs" like the Socratic/Platonic Form of Good or any such nonsense. I just mean something in reality that's mind-independent - in the sense that it is hard-wired, e.g. by evolution, and thus independent/prior to any later knowledge or cognitive content - and thus can be investigated scientifically. It is a definite "is" from which we can make true "ought" statements relative to that "is". See drethelin's comment and my analysis of Clippy.