How does Chapter 10 explain Sai Baba's ability to move imperceptibly, especially in relation to his sleeping plank?

Chapter 10 explains that Sai Baba's imperceptible movements were a result of His great Siddhis, or divine powers. The text marvels at how a narrow plank tied with rags could support His weight, concluding it was "merely for name’s sake" and that his powers were the true support. To explain how he could get on and off the suspended plank without anyone noticing, the chapter introduces the concept of 'Anima,' which is the yogic power to become minute. It suggests that Baba's movements could be as subtle and easy as those of flies, insects, or ants, allowing him to move without being seen.