There's a tension between objects, between objects in motion and other objects, and between movement and objects. The tension is an undefined state that varies in intensity due to proximity, context, scale and viewpoint. This tension exists until a time at which a pair comes together in a moment of relation. Relation is the moment of realization of connection, a point of vulnerability between two objects. Connections are not momentary.
Objects want to relate to other objects. They are aware of movement. Movement adds to tension by dragging the space between objects. As it creates form, an object's movement can negate some or all of that tension.