Acharya Prashant explains that time is not an independent entity but is fundamentally tied to the ego. He defines the ego as a sense of incompleteness that seeks fulfillment by consuming the world. For this consumption to occur, there must be a separation between the observer and the world. This separation requires a distance that is constantly changing; if the distance were constant, the observer and the world would become one, leading to the dissolution of the ego. This continuous change or movement is what we measure as time. Therefore, time is essentially another name for the ego's restlessness and its need to maintain a separate identity from nature.