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INCREASING OPPORTUNITY COST: The proposition that opportunity cost, the value of foregone production, increases as more of a good is produced. This 'law' is most important to the slope of the production possibilities curve. It generates the convex shape of the curve, making the curve flat at the top and steep at the bottom.

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MARKET FOR LEMONS

A market adversely selects only lower quality products for exchange. The market for lemons is an illustration of adverse selection that results from asymmetric information. In this market, because buyers have limited information they offer an average price based on the average quality of the goods. Sellers, however, with better information select to sell lower quality products but not higher quality ones. Two methods of address this problem are signalling and screening. Two related information problems are moral hazard and the principal-agent problem.

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Today, you are likely to spend a great deal of time at a dollar discount store hoping to buy either a printer that works with your stockpile of ink cartridges or income tax software. Be on the lookout for broken fingernail clippers.
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Three-forths of the gold mined each year is used to manufacture jewelry.
"Those who are blessed with the most talent don't necessarily outperform everyone else. It's the people with follow-through who excel. "

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