⁶One qualification is that our data is on relative income rank rather than capital wealth rank. However, a) higher income is correlated with higher wealth, and b) Alesina and Rodrik state: “When we use the term capital, for example, what we have in mind are all growth-producing assets, including physical capital, human capital, and proprietary technology. Labor, in turn, stands for unskilled labor.” (Alesina, Rodrik 1994). In light of a) and b), low-income earners seem to be a reasonable proxy for their unskilled laborers, and high income earners seem a reasonable proxy for their capitalists.