Where does the river of time flow into? Are there rational beginnings of the cosmos?
What do the experiences of those who have survived clinical death and returned to life tell us?
Today’s science is not able to give an unambiguous answer to any of these questions.
Obviously, in such a situation, the only possible path is to search in the form of hypotheses.
That is exactly what the author does, broadly using data from history, ethnography, and astronomy.