How is episode of dimmesdale's midnight vigil on the scaffolding structurally significant?

Dimmesdale's midnight vigil on the scaffolding in "The Scarlet Letter" serves as a pivotal moment that highlights his inner turmoil and guilt. Structurally, it contrasts with earlier scenes, emphasizing his isolation and the weight of his secret sin. This scene also foreshadows his eventual confession, while symbolically representing the struggle between public persona and private guilt. Additionally, the scaffolding itself serves as a physical space where themes of sin, redemption, and societal judgment intersect, reinforcing the novel's exploration of morality.