The leader negotiates the ethics of leadership and purpose (whose purposes, at what cost to whom), keeps purposes alive through rituals and reflection amid everyday tasks, negotiates them with the other purposes at play in the organization, integrates ambitions with aspirations, and avoids the common traps: going blind and deaf to information that threatens the purpose, becoming a martyr, and acting as the chief purpose officer who owns the purpose on behalf of everyone else.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.