Policy Fiscal Policy 1. In the 60s Keynesian's believed they could fine tune the economy. Tax cut of 1964 was hit point of fine tuning. Politicians pursue their self-interest not the public good.
Great example is the military b.
If you assume that politicians enjoy the exercise of power then politicians will do what is necessary to get reelected. They need a war chest of campaign finance so they must court rich interests who have PAC money. Before tax cut of 1964 politicians felt that they must balance the budget. Keynes, himself, might have been surprised that economists would recommend using his ideas to fine tune the economy. Today almost no economists believe that fine tuning the economy is possible.