Paul Krugman is one of those proposing aggressive Keynesian based efforts to stop deflation. Government fiscal or central bank monetary intervention distorts the prices that free markets are attempting to ascertain at any given time of houses, cars, stocks, bonds or beans. From Groupon's (GRPN) deals of the day for a local restaurant to options on Netflix ( NFLX ) to Greek bonds, buyers and sellers review the available and evolving information with lightning speed.