How did Sai Baba change Boss Dharamsee's attitude from skepticism to devotion?

Sai Baba transformed Boss Dharamsee's skepticism through a direct, personal experience that challenged his ego and "clinical scrutiny." According to Chapter 35, Dharamsee initially came to Shirdi out of curiosity about miracles. When offered grapes with seeds, which he disliked, he internally questioned Baba's sainthood. Baba, knowing the intent of his mind, not only gave him more grapes but commanded him to eat them. When Dharamsee obeyed, he discovered they were miraculously seedless. This impossible event shattered his doubts. As the text states, "All his ego dropped away, and love for the saint was born." His previous resolves vanished, replaced by a firm determination to return to Shirdi, demonstrating a complete shift from a skeptical observer to a devoted follower.