„Keynesian economics — the go - to theory for those who like government at the controls of the economy — is in the forefront of the ongoing debate on fiscal - stimulus packages. For example, in true Keynesian spirit, Agriculture Secretary Tom Vilsack said recently that food stamps were an "economic stimulus" and that "every dollar of benefits generates $1.84 in the economy in terms of economic activity." Many observers may see how this idea—that one can magically get back more than one puts in — conflicts with what I will call "regular economics."“
— Robert Barro
What few know is that there is no meaningful theoretical or empirical support for the Keynesian position. Robert J. Barro, "Keynesian Economics vs. Regular Economics" Wall Street Journal (2011).