what do you think of the Evil Eye?
Is it real?
Why is it so prevalent in so many cultures?
I think the wrong person just left
Nailed it to my door to keep faggots and wraiths out while I don't sleep.
The gaze of your peers, social superiors, and social inferiors governs much of human life in towns and cities. Reminders to mind the eyes of the other are a useful boost to psychologically healthy behavior in a person, so the emergence of this ritual practice was inevitable, and its maintenance is self-propelled by the collective unconscious.
It's old Hebrew thing about loving money and being stingy over helping out your neighbour. Something Jesus preached about in the sermon on the mount actually.