On the one hand we say the atma does not die, is everywhere, and we are that ONE atma. Yet the ceremonies revolve around an 'atma' transmigrating several worlds and going through hunger and thirst that need to be propitiated. Some vedantic scholars try to explain these as similar to sun rising and setting which is our perception and not a reality. Can someone kindly explain for someone who really wants to understand and is confused ? Good references to texts one can read is fine too but they need to be not of a type "I told you so" but something that lays out the underlying reasons in a way a rational person can relate to. And, PLEASE no tacky or cynical side comments! Tejasvi na vidhitamastu !!