a tendency toward inertia
One way to measure the relationship of items in a quad is to classify them as Potential, Resistance, Current, and Outcome (or Power). In this manner, we can see how dramatic components operate on each other over the course of the story. Resistance simply means a tendency toward inertia. When a dramatic Resistance exists it does not necessarily come into play. Rather, until a Potential interacts with a Resistance, the Resistance will have no impact at all. So in a quad, assigning one of the items as the Resistance does not mean it will alter the course of the story. Instead, it might function to deter the Potential item from a certain course rather than risk conflict with Resistance. This is a useful tool for Authors since it allows for the subtle relationship of unused, inferred, threatened, or anticipated dramatic interactions that shape the fabric of a story in ways other than conflict.