哪位能帮我解决一下下面的两个问题？？？
Question 1
Compare and contrast the various Keynesian schools of thought in macroeconomics. How do these approaches relate back to Keynes’ original contributions?

Question 2
In terns of policy prescriptions, what was the ‘revolutionary’ element of New Classical economics and Real Business Cycle theory?
What is the central New Keynesian criticism of these approaches?