In this way, goods can be specified, and then they can be circulated under the mutual recognition of people, so there will be replacement and trade between people... At the same time, people have their own preferences and choices on their own will, which determines every aspect of the required material... Perhaps, such a kind of goods based on the objective value of the common knowledge, based on the premise of people's own will, resulting in Rational and orderly human activities are for the sake of economy.<br>
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