I'm going to stick my neck out and say that I understood Mung Beans's post and more or less agree with it.
I understood it (sort of), but it represents a different group of people than how this term is normally used.
You think so? I understood him to be talking about, basically, the Francis Fukuyamas of the world and their various spiritual successors.
"Very Serious People" is a term used to describe those who have concern about the generational impact of debt and write books called The Social Animal.
Well speaking strictly on economic issues yes, but their worldview as a whole can be described along the lines described above.