Classical vs Keynes

The Classical model of the economy says that all markets always clear. The labor market failing to clear does not exist in the Classical model because of competitive exchange equilibrium in which prices and quantities always adjust perfectly. The Classical model is of a closed economy and the variables are real output, employment, real and nominal wages, the price level, and the rate of interest. It is easier to understand the classical model using five …

…everything works itself out and ends up in equilibrium since all the markets clear. The opposite is true for the Keynes model, where they are in favor of government intervention since it is not inherently self-regulating and the markets do not clear. The Keynes model needs a little help from the government, or the central bank, to achieve equilibrium, where as the Classical model, assuming all assumptions were realistic, is self-regulating and all markets clear.