How does the story of Dharamsee's grapes illustrate Sai Baba's method of guiding devotees?

The incident with Dharamsee's grapes, found in Chapter 35, serves as a powerful illustration of Sai Baba's methods. The chapter begins by stating that Baba accomplishes his work by stimulating a person's natural disposition to lead them toward a spiritual path. Dharamsee arrived with a skeptical and scrutinizing mind. Instead of catering to his preferences, Baba challenged them directly by offering seeded, unwashed grapes. This action brought Dharamsee's ego and doubt to the surface. The miracle of turning the grapes seedless was not a random display of power but a precise intervention designed to dismantle Dharamsee's "clinical scrutiny" and ego, thereby opening his heart to love and faith for the saint.