Without trust a leader cannot lead. The leader invests in trust (it predicts personal, team and organizational performance), is the first to trust rather than waiting for others, shows concern for others by listening and taking their perspective, and shares knowledge and information freely, since trust is reciprocal and leaders who withhold it are not trusted in return.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.