In this Twitter thread(https://twitter.com/paulkrugman/status/1424367356617404418?s=21.) posted by Nobel laureate economist Paul Krugman, he argues that government policystimulus checks for households and big government expenditure to help businesses keep their doors open, in particularhelped the fast (V-shaped) economic recovery after the Coronavirus crisis. Further, he claims that the economic recovery after the 2008 crisis could have been a lot faster if the government used similar policies, since there was a huge gap between real GDP and potential GDP at that period (as showed by the graph posted).

Based on his arguments, do you believe that Dr. Krugman diagnoses the US economy as being at the Keynesian zone, intermediate zone or neoclassical zone of the aggregate demand & aggregate supply model in 2008/2009?

How about in 2020/2021? Do you agree that the government could have used stimulus checks and similar policies for businesses to recover from the 2008 crisis?