What evidence suggests that his encounter in the closed building has caused the change In the book sonata for the harp and bicycle?

In "Sonata for Harp and Bicycle," the protagonist, Jason, undergoes a transformation after his encounter in the closed building, which is marked by his interaction with the ghostly figures. The vivid descriptions of the haunting atmosphere and the emotional weight of the ghost's story reveal Jason's newfound appreciation for love and life. This encounter leads him to confront his own feelings and ultimately inspires him to embrace romantic possibilities, indicating a significant change in his character. His actions following this experience reflect a deeper understanding of the connections between past and present, life and love.