The definition of nature and man-made for his practice are divided into five each (The definitions show on signal sources). Every single person has a different perspective each other, which is both of positive and negative. 5×5 is the output of his signal sources. It composed the definition of nature on the left hand of the vertical line, the definition of man-made on the top of the horizontal line. It condenses the depth in the relationship between them into the table.
