> Still, the "upper class" category lumps together the merely wealthy (smallish business owners, the most successful professionals) with the extremely rich, and

> Still, the "upper class" category lumps together the merely wealthy (smallish business owners, the most successful professionals) with the extremely rich, and all possibilities in-between. It also lumps in the high-income earners with the high-net worth people (the ones everyone thinks of when they say "rich").