Acharya Prashant explains that the brain or mind cannot exist in the present because the present is outside the domain of the mind. He asserts that the mind functions through thoughts, memories, and hopes, all of which are rooted in time, specifically the past or the future. The very existence of the mind is time itself; therefore, when time is removed, the mind becomes dysfunctional or falls dead. He challenges the listener to think of something that is not part of their past or to imagine something that does not exist in space, illustrating that all mental images and concepts are bound by these dimensions. Acharya Prashant concludes that the mind is not just a container for time and space but is identical to them. Since the mind's substance is composed entirely of past data and programming, it is incapable of experiencing the present moment, which exists beyond the constraints of time and space.