Yes, this should be established by now
No, and here is my very good reason why.....
Despite what Republicans say, it is clear that Keynesian economic policy works. During the years from 1933 to 1936, Government spending brought recovery. A lull in spending during 1937 and 1938 hindered progress. When spending resumed again in 1939 and 1940, the recovery resumed.
Let's not forget the 1980's recession and how keynesian economic models of deficit spending and low interest rates began to bring the country out of the recession.
Because of math.
I would write a bit about why Keynes was a moron, but I'm tired right now so I'll just give you some reading material about how well Keynesian economics work: http://www.dispatch.com/content/stories/editorials/2013/10/19/history-shows-keynesian-economics-doesnt-work.html http://azconservative.org/2013/10/15/economics-why-keynesian-economics-doesnt-work/ http://www.forbes.com/sites/peterferrara/2012/07/12/obamanomics-the-final-nail-in-the-discredited-keynesian-coffin/