The Keynesians were never wrong. The issue is that the rich countries, especially the US, have never followed a Keynesian policy of minimal to no deficit during periods of private sector growth, They only follow Keynesian philosophy when they are in recession and they want to run high deficits then. Rather than acknowledge this, the austerity people scream out that Keynes is flawed, when in reality its the democratic tendency towards giving people low taxes and lots of services that is the problem.