Polarities are interdependent, opposite motivational values that are equally important over time in order for a system to function most effectively. The pair of values in a polarity are inextricably linked; they are archetypal, universal in all people, everywhere.
Breathing is an excellent metaphor. We absolutely need both inhalation and exhalation. Make the decision to only inhale. That works for a bit until our body, life shall we say, overrides our intent and forces us to exhale. Choose to only exhale, wait a bit, and life does it’s thing, forcing us to inhale. Inhalation and exhalation cannot happen at the same time, although the circular breathing of horn players comes close. There is a rhythmic oscillation between the two, too much of one or the other causes a disturbance.
Polarities are not a continuum. How do you adjust the amount of inhalation or exhalation on a continuum? They are opposites that are both required.
The breathing metaphor is simple enough, no argument about which is more preferred or better than the other. But, what about the polarity of stability and change, perhaps two sides of a larger archetype of sustainability? By personality and socialization (persona shaping), we tend to have our individual and organizational/collective center of gravity in one or the other. Think about conflicts you might have had with another person about which of those should prevail. You will both be very good at advocating for the one you prefer and think is essential, and lay out, readily, the logic and benefits of that preference. You will both be equally adept at pointing out all the flaws, the danger even, in the other approach. It seems self-evident to both sides. Least likely is seeing how your preference could actually be the undoing of the endeavor.
Other examples of interdependent motivational values are competition/collaboration, action/reflection, quality/cost, other-focused/self-focused
Consciousness naturally assigns a good/bad value judgment on the polarity and organizes and acts accordingly, more often than not without question. Our actions reinforce our preference and simultaneously repress the other necessary counter value. We see the one as good/desirable/wise, the other as bad/undesirable/foolish or dangerous. The one becomes reinforced as a Persona/Ego guiding value, the other is repressed or forgotten and slips into the Unconscious (Shadow). The natural benefits of the other are lost.
Here’s a grand statement: Life will not allow exclusive preference for one value in a polarity without forcing the other value back in to the mix. System disturbance will always ensue; it’s a given.