The lack of a satisfactory theory of personal income distribution is a problem that economists have pondered for most of the twentieth century. In 1912 Irving Fisher wrote:

We utilize time series tests to investigate if Barry Bonds’ batting has a deterministic or stochastic trend and to test if structural breaks occur. Bonds’ monthly on base percentage plus slugging percentage (OPS) is examined from 1986 to 2007. We find that Bonds’ OPS is stationary around...