Acharya Prashant explains that the mind is part of a vast, interconnected system where everything is linked. He uses the analogy of a vast ocean where a movement in one part inevitably affects the whole, suggesting that the idea of a human being as a separate fragment of the Divine is incorrect because there is no true divisibility in existence. Every action is determined by a complex network of causes within this system, making the sense of individual doership false. Since every cause within the system is linked to another, there can be no 'first cause' within the material world; the ultimate source must exist in a different dimension altogether.