The notion of "the World of Activity" is a new definition of "Lifescope". It also proposes a new thematic dialogue between Phenomenology and Activity Theory.
Turning potential opportunities into actual actions, turning the world into a person’s experience, and turning the person’s experience into artifacts for the world.
The Activity Circle focuses on “Self, Other, Thing, and Think”. It is perfect for discussing a special object which has double properties: material property and mental property.