This question <17|17> overall <22|24> Siskin: <1397|217>.  
  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?   
  [23] Siskin: No, I do not believe that the claim of abstraction from use-value would settle this circumstance. According to my interpretation, Marx is referring that use-values are not clearly evident when exchanges are being made. Instead, the quantity is what is taken into consideration. Marx plainly states, “In this exchange relation, one use-value is just as good as another, as long as it is present in the proper quantity.” The key to this statement is that use-values are treated equally. Being thus expendable, use-values can't leave a long term impression on the market.   
 
 
 
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