Nouriel Roubini writes “There is an important difference between the 2008 global financial crisis and the negative supply shocks that could hit the global economy today. Because the former was mostly a large negative aggregate demand shock that depressed growth and inflation, it was appropriately met with monetary and fiscal stimulus. But this time, the world would be confronting sustained negative supply shocks that would require a very different kind of policy response over the medium term. Trying to undo the damage through never-ending monetary and fiscal stimulus will not be a sensible option.”