ve realized that the hunt for, and the interpretation of, invariants of this type might lay the foundations for an entirely novel type of theory." Schumpeter (1949, p. 155), discussing the Pareto law — via [Gabaix 2009] This paper introduces some mathematical and simulation models and supports these model

ital is present continuously. Frank Knight, who had anticipated Schultz in realizing that some consumption is investment in human capital, argued as Schumpeter had. But the theory is true by definition. Any rate is the inverse or reciprocal of a period. The inverse of 4% per year is 25 years. Return is the