It has been said that the recent decline in European inflation to a large extent is due to a positive supply shock. This is to some extent correct and it is something I have acknowledged on a number of occassions. However, the main deflationary problem comes from the demand side of the European economy and the fact that monetary policy remains extremely tight in the euro zone is the main cause of the deflationary pressures in the European economy. A simple (but incomplete) way to strip out supply side effects from the price level is to look at the GDP deflator. This is what I here have done for Greece. This is the horror graph of the day – it is the level of the Greek GDP deflator relative to the pre-crisis trend (2000-7).
I challenge my readers to find ANY example from history where such a collapse in the price level has ended in anything else than tears. PS note that there are no signs of inflationary pressures in the Greek economy escalating prior to the crisis. This is not about imbalances, but about a negative monetary policy shock.