you cannot spend your way out of a recession or economic downturn
In the 1930s, John Maynard Keynes spearheaded a revolution in economic thinking, overturning the older ideas of neoclassical economics that held that free markets would, in the short to medium term, automatically provide full employment, as long as workers were flexible in their wage demands. Keynes instead argued that aggregate demand determined the overall level of economic activity, and that inadequate aggregate demand could lead to prolonged periods of high unemployment. He advocated the use of fiscal and monetary measures to mitigate the adverse effects of economic recessions and depressions. Following the outbreak of World War II, Keynes's ideas concerning economic policy were adopted by leading Western economies, resulting in the greatest, and longest-lasting, economic boom the world had ever known.