In the story of the doctor's nephew, what does the failure of conventional medicine signify in relation to the power of Udi?

The narrative in Chapter 34 uses the failure of conventional medicine to emphasize the extraordinary and divine power of Sai Baba's Udi. The story specifically mentions that the boy's uncle was a degree-holding doctor, and that expert physicians and intelligent surgeons had tried all native and foreign treatments, including surgery, to no avail. The disease, a bone-cyst (Hadyavarn), was described as a most difficult and extraordinary malady. By establishing the complete helplessness of medical science in this case, the text sets the stage for Udi to be presented as a miraculous, last-resort remedy. The Udi's success where all human efforts failed signifies that its healing properties transcend the physical, operating on a spiritual or divine level as a gift from a great saint.