Abstract
G. H. Mead formed his methodological theory from ‘relativity’ and acts. His interpretation of ‘relativity’ has two aspects. One is a ‘relativity’ between the present and the past/future. The other is a ‘relativity’ between a physical object and an individual. These aspects arise according to acts, especially to the act of perception through acts, physical objects acquire a reality. The reality that the individual adds to the time and the space, then, is just an extension of the reality an individual adds to physical objects.
