According to the great Doctor Gary North, the litmus test of Keynesianism is the attack on austerity. He writes:
Lets say that you are reading an article on what the Greek government should or should not do. You read that the governments proposed austerity measures will lead to a reduction of production. This will lower tax revenues. The government-debt-to-GDP ratio will increase. Austerity will therefore not solve Greeces economic problems.
The article was written by a Keynesian.
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http://www.zerohedge.com/news/2012-10-14/guest-post-how-spot-keynesian
Do you think our inflation rate is artificially set low?