Once upon a time (today), in a land not so far away (USA), there lived a trio of economic wizards (economists), whose names shall remain anonymous (Paul Krugman, Greg Mankiw, Ben Bernanke).
A fourth wizard, Murry Rothbard, is no longer among the living but resides in the netherworld.
The above wizards seldom agree with each other because they come from competing schools of wizardry.
Three Schools of Economic Wizardry
Keynesian School of Fiscal Voodoo and Witchcraft
Monetarist School of Monetary Voodoo and Witchcraft
Austrian School of Sound Money, Sound Economic Principles and Common Sense.