Elements serve to show what the inequity looks like from all possible points of view and thereby hone in on the source: the one bad apple in the basket. All 64 Elements in this level must be represented in character form in order to fully explore the story’s inequity. Of all these, two special characters bear special attention: the Main and Obstacle.
The Main and Obstacle characters do double-duty by carrying the Subjective Storyline and also playing an Objective role by being assigned to two different players that contain an Objective function. The player containing the Main Character always contains the Crucial Element in its Objective role. However, that element does not always have to be the Solution. It might be the Problem, Focus, or Direction Element, depending upon the dynamics. It is this duality that makes those two players the linchpins of the story: the hinge upon which the Objective AND Subjective Problems and storylines converge.
The player containing the Obstacle Character also contains the Element diagonal to the crucial element: the other half of the dynamic pair. In this way as a Main Character or Obstacle Character comes to eventually change or remain steadfast, the subjective problem influences how that player will respond in regard to the Objective Element it also contains. Like magnets with North and South poles, what happens on the Subjective side will influence the Objective stand, and when pressures force a change in the Objective stand, it will influence the Subjective point of view. It is no surprise that this relationship between Objective and Subjective dynamics in characters has seemed so indefinably obscure for so long.
From the Dramatica Theory Book