What is a business cycle? How does the unemployment rate behave over the course of a business cycle? Does the unemployment rate ever reach zero? 2. Might two economists agree about the effects of a particular economic policy but disagree about the desirability of implementing the policy? Explain your answer. 3. Compare the classical and Keynesian views on the speed of wage and price adjustment. What are the important consequences of the differences in these views? 4. Can average labour productivity fall, even though total output is rising? Can the unemployment rate rise, even though total output is rising