Acharya Prashant explains that illusion is not an inherent quality of objects but a consequence of incomplete perception. He asserts that everything in existence is real and complete, including dreams and physical objects, provided they are seen in their totality rather than in isolation. An illusion is simply the failure to see the whole truth. When one recognizes an illusion for what it is, it effectively disappears. He emphasizes that the label of illusion is applied only when an object or event is separated from its core or root. The speaker further explains that the greatest illusion is the ego's sense of doership. He describes how every action is part of an infinite network of interconnected factors, such as gravity, time, and the presence of others. The ego creates an illusion by isolating itself from this network and claiming individual credit for actions. Acharya Prashant suggests that instead of attempting to intellectually grasp the entire infinite web of relationships, one should simply abandon the isolated thought of being the doer. By dropping the notion of being the one who acts, one moves beyond the fragmented view of the ego.