The consequence of such stance is the creation of an "Us" versus "Them", thereby polarizing social configurations into extremes in a way that mutual understanding between the two "poles" is made very difficult or impossible, since the "Them", the "Other", is demonized, dehumanized.
Dualism is a theory which interprets any given situation in terms of two contrasting elements, which from a metaphysical point of view comes to imply that reality consists of two fundamental types of existence which cannot be reduced to each other.
Ethical dualism, on the other hand, highlights the moral dimension instead or in addition to the metaphysical one, and envisions an inherent situation of conflict between two antagonistic forces, like light and darkness, Good and Evil.
[3] One of the most known and clear-cut interpretations of ethical dualism is the one conceptualized by Zoroastrianism, the ancient Persian religion, which bases its thought on the figure of the prophet Zoroaster (or Zarathustra), who claimed the existence of two original and contrasting principles, Ahura Mazda and Ahriman, respectively representing the forces of Good and Evil.
Therefore, it is possible that during this period the two peoples exchanged ideas about their view of the world, which would explain the clear reference to ethical dualism expressed and reformulated in Jewish terms in Chapter 31:15 of the Deuteronomy, the 5th book of the Torah: See, today I set before you life and prosperity, death and disaster.
But if your heart strays, if you refuse to listen, if you let yourself be drawn into worshipping other gods and serving them, I tell you today, you will most certainly perish […] I set before you life or death, blessing or curse.
Throughout history, the interpretation of events and situation from a perspective of ethical dualism has targeted different groups of people who are regarded as the perpetrators of evil in the world, such as the nobility, the bourgeoisie, the corporate elite, and many others.