Duality is a component of low consciousness, where spiritual beings divide the World into two different parts – BLACK and WHITE, GOOD and BAD, WE and THEY, etc.
Most of the discussions taking place throughout the film are highly spiritual and contain such topics as faith in God, the existence of the soul, bad and good acts, etc.
The world described here is on a dense planet with a very low collective consciousness. The lifestyle and mindset are close to the Dark Ages in European history on our Earth.