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  Question 557: Marx says that labor cannot have value because it is the source which gives everything its value. How can labor give something which it doesn't have?   
  [1623] Avatar: Resub for Exam Question 557.   Labor is the source of value, but it doesn't have value. A thing need not possess a certain quality to cause it to be manifested in another. There are many examples of this relationship, like the one given in the annotations about the sun causing things to cast shadows, but not having a shadow of its own. Another is an allergen. An allergen doesn't possess allergies, but can cause them in something else. Labor gives something it does not have (value) via its abstraction: “labor power”. Labor power is a commodity such that its consumption is the objectification of value and in its consumption value is endowed to other commodities.   
 
 
 
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