Talcott Parsons

The system becomes logically closed when each of the logical implications which can be derived from any one proposition within the system finds its statement in another proposition in the same system.
The system becomes logically closed when each of the logical implications which can be derived from any one proposition within the system finds its statement in another proposition in the same system.
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These are some quotes by American author Talcott Parsons Sociologist, who lived between December 13, 1902 and May 8, 1979.