a) Demon aka dai (divide) mon (provide)...all provided divides into each one provided for.

For example...one has perception because all perceivable provides itself by dividing into each ones perception.

b) If the divided (ones perception) ignores the providing (all perceivable), then another ones suggestion becomes a sphere of influence aka a "demonic realm".

Ones consent shapes ones mind/memory into an isolated sphere (circular logic) for the suggested information by another, which establishes an imbalance within self against others aka a conflict of reason, with two opposing sides tempting ones free will of choice.

This internal conscience of circular logic and the temptation of external conflicts of reason represents a plot device suggested through rabbinical judaism to promote progressivism... https://en.wikipedia.org/wiki/Shoulder_angel

c) If one consents to follow suggested orders, while ignoring the perceivable natural order moving ones life from inception towards death, then shifting the visible spectrum of light imbalances one mentally and physically.

A being within the visible spectrum of light implies a ray thereof...if such a ray follows the spectrum of light towards the end, instead of resisting the origin thereof, then such a ray gets bend out of shape, hence spectrum/spectra - "apparition, phantom, specter"

https://www.etymonline.com/word/spectrum#etymonline_v_23991