It’s basic common sense. When you are low on cash, you don’t spend . . . you save. According to Keynesian economists, however, the way a government should handle a recession or depression is to start spending. The theory goes that government spending puts people to work, which gives them income, which gets spent, and the economic cycle gets moving again.
The problem is that Keynesian economics is as crazy as it sounds. On its face there’s a kind of a logic, but if you have even a simplistic understanding of how money works you know that it just doesn’t seem right. The reason is that the government, in order to pay for these initiatives, has to find money somewhere. It can just print it out of thin air, which leads to inflation and reduces the value of the money and further destabilizes the economy. It can also run up huge debts, which is better than fabricating money out of thin air but still leads to all kinds of long term problems. The debts have to be paid sooner or later.
Keynesian economics is a discredited theory, at least among economists who aren’t blinded by their own personal politics. It doesn’t work. It was attempted by President Franklin D. Roosevelt (D) during the Great Depression and, despite the over-simplified story they tell us in grade school, those efforts prolonged and deepened the economic calamity we found ourselves in. It most certainly didn’t help things, and we’re still paying the debts we ran up with all of FDR’s ‘New Deal’ programs 70 years later.