@GhostOnTheHalfShell
That's exactly right. There is no easy way out, but there is the not-easy way out, and that's to start thinking about the definition you would like to use and to figure out how to estimate that quantity at least approximately. If no one is lower middle class in Snowmass then the lower middle class people commute to the lower middle class jobs and so there's geography and transportation that substitute etc... @economics-that-works