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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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PRINCIPAL-AGENT PROBLEM

A disconnection or conflict between the objectives and goals of the principal and those of the agent authorized to represent the principal. The principal-agent problem arises because an agent is given the responsibility and authority to take actions that affect both the principal, but can also affect the agent. This problem is common in corporate management, where the principal is shareholders and the agent is managers. It is also common in government, where the principal is the public and the agent is elected leaders.

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Today, you are likely to spend a great deal of time at a flea market wanting to buy either a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a wall poster commemorating the 2000 Olympics. Be on the lookout for telephone calls from long-lost relatives.
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Sixty percent of big-firm executives said the cover letter is as important or more important than the resume itself when you're looking for a new job
"Never confuse a single defeat with a final defeat."

-- F. Scott Fitzgerald, writer

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