In 1936, Keynes published The General Theory of Employment, Interest, and Money, which many economists agree constructed the fundamentals of "modern macroeconomics." Keynesianism basically lays out three points: the federal government must move away from laissez-faire economic philosophy, the federal government should play an active role in managing the national economy, and the federal government must act to stimulate demand and maintain a high employment rate. The way the federal government should accomplish these three points, suggested by Keynes, was by manipulating interest rates to manage money, raise or lower taxes, and engage in federal spending.

Was Keynes right or wrong from his theory? Please response in 2-3 paragraphs and include Aggregate demand and Aggregate supply explanation.