Perhaps the most cited lesson from Pressman and Wildavsky's (1973) study was their insight into decision points and the importance of control and coordination.Creating jobs through public works and other programs on Oakland required the involvement of state and local authorities; and other federal agencies inevitable become involved too.To get anything substantive done thus required getting a wide range of agencies at different governmental levels to approve key implementation decisions.Pressman and Wildavsky found that the more approvals that have to be granted in order for an action to taken, the higher the likelihood that that action would not be taken. To quantify this point,Pressman and Wildavsky provided an example where thirty decision points have to be cleared, involving seventy separate required agreements before an action can be approved and undertaken. Assuming a .95