Motion supports usability in four ways

These four pillars represent the four ways where the temporal behavior of user experiences supports usability.

• Expectation: how users perceive what an object is, and how it behaves. 
• Continuity speaks both to the user flow and to the ‘consistency’ of the user experience. 
• Narrative is the linear progression of events in the user experience that results in a temporal/spatial framework. 
• Relationship refers to the spatial, temporal, and hierarchal representations between interface objects that guide user understanding and decision making.