World War II revealed two of the enduring features of the Keynesian Revolution. One was the moral difference between spending for welfare and spending for war. During the Depression very modest outlays for the unemployed seemed socially debilitating, economically unsound. Now expenditures many times greater for weapons and soldiers were perfectly safe. It's a difference that still persists.
John Kenneth GalbraithThe oldest problem in economic education is how to exclude the incompetent. A certain glib mastery of verbiage-the ability to speak portentously and sententiously about the relation of money supply to the price level-is easy for the unlearned and may even be aided by a mildly enfeebled intellect. The requirement that there be ability to master difficult models, including ones for which mathematical competence is required, is a highly useful screening device.
John Kenneth Galbraith