Chapter 10 says Baba's movements were imperceptible. How does the text explain this phenomenon, especially regarding his sleeping plank?

Chapter 10 explains the imperceptible nature of Sai Baba's movements by attributing it to His divine powers, or Siddhis. The primary example given is how He would get on and off a narrow wooden plank suspended from the ceiling by rags, where He slept with lamps burning. The text highlights that no one ever knew when He climbed up or down. This mystery is explained by suggesting Baba possessed powers like 'Anima,' the ability to become minute. As Chapter 10 speculates, His movements could become as subtle and easy as those of "flies, insects, or ants," rendering them completely unnoticeable to human observers and demonstrating His transcendence of ordinary physical limitations.