vement is required because the free market system functions according to the "Invisible Hand" theory. This theory rests on Smith's explanation of how self-interest in a free-market economy leads to economic well-being. "It is not from the benevolence of the butcher, the brewer, or the baker, that we can expect our dinner, but from their regard to their own interest." (Smith, The Theory of Moral Sentiments) Basically, Smith believed that every man is out for self-betterment and are driven by the desire to make money for himself. Thus, this desire creates the central mechanism of a market system-competition. In a competitive market, manufacturers must produce the goods that consumer wants, and in the quantities that consumers wants. Most importantly, producers must sell their products at a price that consumers are willing to pay. Smith's "pot and pan" model can best illustrate this theory: Suppose consumers want more pots and fewer pans than there are in the market. Consumers will buy all the existing stock of pots, and as a result their prices increases. Conversely, the pan business's sales will plummet and its makers will try to lower its price to try to get rid of their stocks. As pot prices increase, so will the profit for its producers. The drive for self-interest will cause the production of pots to increase also. Thus, the more quantities of pots will be produced while the pans will fall. The desires of the market will automatically activate the Invisible Hand as it direct activities of producers who are seeking for profit. The Invisible Hand runs the market system, making sure that the system produces what goods it needs. In today's mixed economy, the principle of the "Invisible Hand" is very evident as many private companies, such as Wal-Mart, the Bay and Zellers all compete for sales by adjusting prices and selling products that consumers want. For example, if Wal-Mart ...