In and Out Complex                    
​Circular reasoning is the fundamental principles of contents of essential human life, an ecosystem which is the field of life and nature order. This work is based on literature reference about the hidden meaning of endless circulation of life and Mother Nature in casual relation. We can find the movement, continuation, repetition, and with no prescription as circular features in a natural phenomenon and internal- external forms.                                                                                                  Jan. 2000.  by Yonsoo Chung