This question <23|23> overall <16|18> Prudon: <1318|70>.  
  Question 75: Marx says that the exchange-relations are characterized by an abstraction from use-values. But use-values do affect the exchange proportions. If a use-value is in high demand compared to supply, then it commands a higher exchange-value. If a competitor brings out a better product, the firm's own product may not sell any more. Can this be reconciled with the claim of abstraction from use-value?   
  [17] Prudon: I can see the point made in the answer in [2005fa:69]. Marx's view that exchange-relations are characterized by an abstraction from use-value cannot be reconciled with market supply and demand because exchanges are based more on consumer preferences than on pure quantitative operations, the answer holds. I want to discuss this question from a slightly different perspective. As we know competition is based on who is better and faster able to satisfy consumers' needs. Thus, we can assume that in competition one of the main factors is the use-value of the commodity. If we abstract from use-value, then the “useful characteristics of the products of labor” disappear, “they (products of labor) no longer differ from each other”, Marx says. Thus, it should not make any difference for the consumer which use-value to prefer. In this case, the whole theory of competition that is built on developing new better products does not make any sense. In addition, it contradicts Marx's own statement that as use values, commodities are, above all, of different qualities. Hence, it would be absurd to abstract from use-value in competition.   
 
 
 
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