This question <67|41> overall <39|41> SA: <1200|286>.  
  Question 89: Why is labor measured here by labor-time, and not by counting how many movements were made, or by the drops of sweat of the laborer, or by the discomfort of the laborer?   
  [40] SA: The reason labor is measured by labor-time and not by any other means is because time is a very efficient way of measuring labor. Labor can be broken down and measured by every basic human activity, but this would make the process very inefficient. Considering all the industries and kinds of labor that exist, measuring labor in such a broken down fashion would require a tremendous amount of time and effort. This would create instability in the quality and value of a product or service. In a competitive market, one would expect units of measurements to become constant for reasons of simplicity. Measuring labor in time decreases the amount of time and effort required, and sets industry standards where quality and value are constant. This is why a capitalist society evolved into measuring labor in time.   
 
 
 
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