The text mentions an "Echo without sound" to describe Baba's insight. Can you explain this concept using Laxmichand's experience with hunger and back pain?

The phrase "Echo without sound" from Chapter 28 poetically describes Sai Baba's ability to know and vocalize a person's unspoken, internal state. This is perfectly illustrated with Laxmichand, who was not only secretly craving khaja but was also physically suffering from hunger and back pain. Baba, without being told, directly addressed these conditions. As Chapter 28 recounts, Baba's words, "Hunger has come, that's good. There should be medicine for back pain," were a perfect verbal reflection—an echo—of Laxmichand's silent physical and mental condition. It showed that what was in Laxmichand's mind was clearly expressed in Baba's words, proving his inner knowledge.