Precepts of the classical school of economics include all of the following EXCEPT: O by adjusting to varying levels of demand and supply, markets are usually efficient in organizing economic activity. O general non-intervention by government, that is, "laissez faire" (allow to do). O regular government intervention to assure stability and growth in the economy. O if government intervention is necessary, it should be with the goal of increasing economic activity. O money is important as a medium of exchange, but printing excess money will lead to inflation.