Can you explain the doctor-patient analogy used in the text to describe Sai Baba's method of granting grace?

Chapter 27 illustrates Sai Baba's method of instruction with a powerful analogy. Baba is likened to a wise doctor who knows the correct diagnosis and medicine for a patient, who represents the devotee. The patient might stubbornly ask for jaggery (something sweet but harmful) instead of the necessary medicine. Rather than using force, the doctor employs a trick, perhaps giving the jaggery first to make the medicine more palatable. In the same way, Baba would use various means, including humor and indirect approaches, as a 'vehicle' for his grace. This shows how he tailored his methods to the devotee's capacity and disposition to achieve his intended purpose of healing and guidance.