Source? Everything we do is more an more complex. A TV show requires hundreds of people. A smartphone, millions if we include supply chains. Same for a car. A modern house requires dozens of highly specialized workers for weeks at a time, plus materials. People live much longer with better health, that’s a lot of labor in research, machines, drugs and raw manpower (nurses, surgeons, etc).
Source? Everything we do is more an more complex. A TV show requires hundreds of people. A smartphone, millions if we include supply chains. Same for a car. A modern house requires dozens of highly specialized workers for weeks at a time, plus materials. People live much longer with better health, that’s a lot of labor in research, machines, drugs and raw manpower (nurses, surgeons, etc).
Maybe you meant a pre-industrial middle class?