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Continue to ChatA commodity has a value because it is a crystallization of social labor. The greatness of its value, or its relative value, depends upon the greater or less amount of that social substance contained in it; that is to say, on the relative mass of labor necessary for its production. - Karl Marx from https://whatsmyquote.com/quote/a-commodity-has-a-value-because-it-is-a-crystallization-of-social-labor-the-greatness-of-its-value-or-its