Carver noticed that board members often wonder what the board's job is and where the line lies that distinguishes the board's job from that of the chief executive officer. Carver's model clarifies the separation by having the board explicitly state the board's and CEO's jobs in a set of written policies (hence the name Policy Governance). This set of policies is divided into four types. One is the organization's goals (or Ends), and three are about the means the board and CEO employ to attain those ends.