As early as 1949, Professor Ziff from Harvard University proposed that whether it comes from individual or collective human behavior, its nature reflects and pursues the principle of labor-saving expression.
Professor Ziff, also from Harvard University, argued as early as 1949 that the nature of acts, whether from individual or collective human beings, embodies and pursues the principle of saving effort.
Professor Ziff, who is also from Harvard University, put forward in his thesis as early as 1949 that the nature of human behavior, whether from individual or collective, embodies and pursues the labor-saving principle of expression.