That means that the priority variable that economic designers must strive to maximize is variability itself. Variability needs a maximum of harmonious variety as a prerequisite, and variability is in turn the raw material of adaptibility and long-term survivability. For economic designers, maximizing variability maximizes the long-term survivability of the core economy that they design, or rather, to inject some variability right here, maximizes the long-term survivability of the evolving series of core economies that they design. This aligns with a view of evolution as a very long-term trend away from greater violence and drama and toward greater gentleness ("harmonious") and variety.

• In the context of individual employees, variability translates into versatility. This means that training has to be a lot easier and more accessible, on par with World War II levels of pervasive on-the-job training.
• In the context of the overall economy, variability translates into becoming more accessible to one another on a non-destructive and potentially cumulative basis, or in a word, variability translates into sharing (econ: deconcentration; unactionable: narrowing the income gap; left: redistribution; phys: centrifugation).

• In the context of the biological environment on which our economies utterly depend, diversity translates into biodiversity.  The "young master" of evolutionary biology, E.O. Wilson, believes the most important problem of his lifetime is the rapid extinction of species, especially in the rainforests where they are most numerous, and the consequent loss of biodiversity (which will take 100,000s of years to restore). The reasons for this rapid reduction in the survivability of our biosphere and consequently, us, are -
  • our own human overpopulation (handled in Phase Five of the Timesizing full-employment program)
  • the global desperation for jobs due to our current dysfunctional economic designs (handled mainly in Phases One and Four of the Timesizing program, as described in Volume III, Timesizing, Not Downsizing, of the Millennium Orienteering Trilogy aka the 'time trilogy')
  • our consequent over-reliance on quantitative material motivation alias the "Gospel of Consumption" alias inflationary mercenary incentive (balanced with qualitative deflationary incentive in Phases Two and Three, of the Millennium Orienteering Trilogy aka the 'time trilogy')

• In the context of social evolution, that is, the evolution of our species as tracked by history and prehistory and evolutionary anthropology, diversity translates into linguistic diversity, which in turn branches into
  • semiological and drumming-beating diversity,
  • (agri)cultural, and counting diversity,
  • writing and measuring diversity,
  • religious-political and logical diversity,
  • economic, scientific and mathematical diversification, and
  • psychological, lifestyle and ecological diversification.
  These topics are covered in Volume II, "The Football of Time," and in (for measurement) Volume I, "Defining Time," of the time trilogy.