Keynes? Keynes!!!!
That bogus government rent boy is the reason this country is going down the toilet.
Him and his “theory” was the perfect excuse that gave government the green light to START what we are now in the mist of. The US dollar is so abused, is not being accepted outside this country, and is on the way out LIKE ALL FIAT CURRENCIES HISTORICALLY DO.
There is nothing new under the sun, including currency collapse.
Keynes attempted to explain why the traditional methods of the Neo-Classical school of Economics (Marshall for example) did not seem to be working to revive the Western democracies’ economies from the Great Depression.
I wonder what "theory" you believe he advocated which you believe has caused such damage? Keynes NEVER advocated continual deficits run by governments and, in fact, argued strenuously against such policies. He would not be what is considered "Keynesian".
It is also worthy of note that he warned in 1920 (In "The Economic Consequences of the Peace") about imposing the punitive Treaty of Versailles on Germany. He was dead on about that and universally ignored.