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June 27, 2022 

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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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SIXTH RULE OF IGNORANCE: The sixth of seven basic rules of the economy. It is a fact of life that obtaining information is a costly activity, it requires resources that have alternative uses. As such, no one knows everything and everyone is ignorant about something. I might know a lot about economics, but you can recite every line of every episode of "Gilligan's Island", and that weird-looking guy you bumped into at the store has a detailed account of everything you've done for the past five years.

     See also | seven rules | economy | information | opportunity cost | scarcity | rational ignorance | adverse selection | moral hazard | advertising |


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INCOME EARNED BUT NOT RECEIVED

The three types of income earned but not received (IEBNR) by the factors of production are Social Security taxes, corporate profits taxes, and undistributed corporate profits. IEBNR is subtracted from national income to calculate personal income.

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BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius trying to buy either storage boxes for your computer software CDs or a set of tires. Be on the lookout for jovial bank tellers.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"It is very rare that you meet with obstacles in this world (that) the humblest man has not the faculties to surmount. "

-- Henry David Thoreau, philosopher

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