Let’s start with Japan.
The Keynesian economists managing or advising the world’s Central Banks have always averred that they could pull us out of the weakest recovery in the post-WWII era if they were allowed to have their way.
Their “way” involves rampant debt monetization, also called Quantitative Easing or QE. Indeed, the primary argument from the Keynesians as to why QE has thus far failed to generate a rip-roaring recovery is that none of the QE programs in place were large enough.