Personal mastery is the ongoing practice of getting clear about what truly matters, living from a creative rather than reactive stance. Vision is a specific picture of a desired future, distinct from purpose (a direction, a sense of why) and from negative visions of what to get rid of; people with high mastery focus on intrinsic results rather than the means they assume necessary, and hold visions that are intrinsic rather than relative to a competitor.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.