Acharya Prashant explains that the world operates in duality, where opposites like the physician and the patient, or life and death, are interdependent. He asserts that wherever there is duality, death is inevitable because death is defined by limitation. Our conventional understanding of life is bound by the cycle of birth and death; we consider the body to be life, yet the body inherently carries its own end. To live in duality and grant it ultimate importance is to prepare for one's own demise, as every beginning in this realm necessitates an end.