Have Keynesian economics already been discredited?

Keynesian economics was tried under the name of a "New Deal" and had marginal success as long as FDR kept pumping government money into the stagnant economy to provide a "false positive" of "growth" just as we see today. When they stopped in 1937, there was a rapid economic drop resulting another recessional "dip" which did not abate until WWII. Perhaps all we require is another "WW" started in Korea to cover up Obama's mismanagement? We could call it "Wok the Dog"... "Education Reform" is simply another "crisis" they can work us all up for so they can be excused when they further expand the system and dump more money on the "problem" even more under the guise of the same "crisis" which existed ever since politicians started noticing one!