Janet's Reading Response for "Modernity Verses Postmodernity”

I’m not sure what I read, but here goes anyway. I think he is talking about culture that is different for the experts, than for the public. He goes on to say that there are three separate spheres, science, morality, and art and they are interpreted differently by each group. That only an expert in the respective field can then know how to handle them as questions of knowledge, or of morality or taste. Basically they could handle the questions about the specific area in a more knowledgeable way. Why do we need them to tell us what to think? I’m lost help!