Lord Keynes, inventor of the highly esteemed make-believe system we call Keynesianism, believed that a “multiplier effect” would take place when the government spent money in one area or other. Similar to the idea of “velocity of money,” this nonsense “showed” that money the government spent on Social Security, war, or food stamps, would move through the economy multiple times and make us all richer. Ergo, PRINT MONEY.
As it turns out, those who are familiar with mathematics can see plainly that Lord Keynes was not. Disregard mathematical mistakes, Keynesian economists! Rally on!: