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ABSTRACTION METHODS: Abstraction is the process of simplifying the complexities of the real world by ignoring (hopefully) unimportant details, especially (for our purposes) while doing economic analysis. Three common methods of actual, real world abstraction used in economic theories are words, graphs, and equations. Words can be misunderstood. Graphs are a little more precise. And equations tend to be the most precise of the three.

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MARKET FAILURES

Imperfections in the exchange process between buyers and sellers that prevent markets from efficiently allocating scarce resources. Market failures come in four varieties -- public goods, market control, externalities, and imperfect information. Market efficiency is achieved if the value of goods produced is equal to the value of foregone production. Markets fail when this efficiency condition is not achieved. Such failures can only be corrected by government intervention.

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Today, you are likely to spend a great deal of time lost in your local discount super center looking to buy either a package of 4 by 6 index cards, the ones with lines or a 50 foot extension cord. Be on the lookout for the happiest person in the room.
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The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
"Defeat is not the worst of failures. Not to have tried is the true failure."

-- George E. Woodberry, Author

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