I don't understand their class definition. Does the article imply that the class divide based on income/wealth is dead and now there is a divide based on profession instead?
Much fewer households receive the census but they are much more rich in the questions asked.
Not hard to understand what they mean, but creative as a term is diluted here.
[0] http://www.ers.usda.gov/data-products/creative-class-county-...
https://en.wikipedia.org/wiki/Creative_class
It tries to make events like gentrification a little more clear by focusing on working-age adult occupations. In particular, regular income/wealth statistics tend to hide trend signals because in-place retirees end up echoing the economics of the past for a long time.