> Being a central concept does not mean it's not esoteric.
That might be fair. I wouldn't consider a term well understood by anyone with much exposure to the social sciences (any of them, just about, will run you into it, sooner rather than later, probably) or a more-than-tiny exposure to economics (if we're feeling generous and separate that from the social sciences) or just about any higher liberal arts education, to be esoteric, but I can see that falling within one's tolerances for the term, depending. Probably well North of half the population would be lost by it, or take something other than the intended meaning, that's true.
That might be fair. I wouldn't consider a term well understood by anyone with much exposure to the social sciences (any of them, just about, will run you into it, sooner rather than later, probably) or a more-than-tiny exposure to economics (if we're feeling generous and separate that from the social sciences) or just about any higher liberal arts education, to be esoteric, but I can see that falling within one's tolerances for the term, depending. Probably well North of half the population would be lost by it, or take something other than the intended meaning, that's true.