The technological factor in the production function is often called multifactor productivity (MFP). The basic value of MFP is a sum of a global productivity growth rate driven by the economically advanced or leading country/region (mfpleadr), a technological premium dependent on GDP per capita, and an exogenous or scenario factor (mfpadd).
In addition, however, other factors affect productivity growth over time. These include the level of economic freedom (ECONFREE), the price of energy (ENPRI), and the growth of the networked or new economy as represented by the number of networked persons. With respect to the latter, the model structure presumes an ultimate increment in productivity growth (numnwpgrinc) attained fully when the number of networked persons (NUMNWP) reaches an upper limit dictated largely by population size.