14 November 2010

The difference between quantity and quality

The difference between quantity and quality is the difference between substitutibility and complementarity. The quantitative dimension is the one in which all measures are substitutes for each other. One unit is by definition a perfect quantitative substitute for any other unit. 
In the qualitative dimension the measures are complements for each other. One factor coordinates and collaborates with all the other factors to produce a single, optimal whole. 

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