You mean a tool to organize society like castes were? Or a tool to organize society so that it produces enough medical care and has a large enough army? The fir

You mean a tool to organize society like castes were? Or a tool to organize society so that it produces enough medical care and has a large enough army? The first one really doesn't fit with how dynamic jobs are, as they can be created at any income level or sector regardless of the impacts to social class.