From the Cato @ Liberty blog:
"Keynesian economic theory is the social science version of a perpetual motion machine. It assumes that you can increase your prosperity by taking money out of your left pocket and putting it in your right pocket. Not surprisingly, nations that adopt this approach do not succeed. Deficit spending did not work for Hoover and Roosevelt is the 1930s. It did not work for Japan in the 1990s. And it hasn’t worked for Bush or Obama."
Common Sense Underground