Keynesian theory says that the level of spending in the economy is what determines the state of the economy. And so it's a vicious cycle where the economy gets into recession. The only way out is for Keynes' banks, their bodies and government bodies to print a lot of money to give to themselves. That's one interpretation. But I've taught macroeconomics at university level for a while. So I know Keynesian nonsense better than most Keynesians know Austrians,. If not all of them, I guarantee you.