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PARETO IMPROVEMENT: Based on the Pareto efficiency criterion, the notion that an action improves efficiency if it is possible for one person to benefit without anyone else being harmed. A Pareto improvement is possible if the economy has idle resources or market failures. With idle resources, more production is possible to help some without hurting others. With market failures, corrective actions can eliminate deadweight loss that can then be use for benefits economy-wide. A contrasting condition for attaining efficiency is the Kaldor-Hicks improvement.

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DUOPOLY

An oligopoly market structure containing exactly two firms. As an oligopoly, duopoly exhibits the oligopolistic characteristics and undertakes oligopolistic behavior, such as barriers to entry, interdependent actions, and nonprice competition. While duopoly, in its purest form of EXACTLY two firms in the industry, is seldom found in the real world, it does provide an excellent, easy to use illustration of oligopoly. In fact, most instructional analysis of oligopoly generally assumes a two-firm, duopoly market.

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Today, you are likely to spend a great deal of time at a going out of business sale trying to buy either a velvet painting of Elvis Presley or a wall poster commemorating yesterday. Be on the lookout for strangers with large satchels of used undergarments.
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This isn't me! What am I?

Al Capone's business card said he was a used furniture dealer.
"To succeed you need to find something to hold on to, something to motivate you, something to inspire you."

-- Tony Dorsett, Football player

PIH
Permanent Income Hypothesis
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