The Pendulum Effect is a law, discovered by Galileo in 1602, that describes the regular, swinging motion of a pendulum by the action of gravity and acquired momentum, the theory holding that trends in culture, politics, etc., tend to swing back and forth between opposite extremes. As a metaphor it takes us to the patterns of reality recycling back and forth in the motion of emotions from one extreme to another in time.

Pendulums

Strange Illusion Shows That The Human Brain Messes With Time to Maintain Our Expectations A strange new experiment shows just how easily our perceptions can be manipulated by our own expectations and assumptions.

To study emotions is to experience in linear time - co-existing constructs. The perception of time is relative because as you've probably learned along the way time is an illusion and subjective. It's interesting that they picked the image of a boy on a swing for the article because I always associate children and swings with Time Travel. Perhaps it has to do with the motion of a pendulum on a clock. Are we hypnotized in the construct of time to believe reality exists? Do our perceptions manipulate our expectations and assumptions to fit a philosophy that guides our very existence?

This swaying motion is often used to hypnotize people.