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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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SIGNALLING When confronted by asymmetric information, the use of small bits of information, or indicators, that suggest more comprehensive information. Signalling is used by those with more information to reduce the cost of informing those with less information. It is commonly used in markets with adverse selection. Methods of signalling include advertising, brand names, and warranties. A related method is screening.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages hoping to buy either a large, stuffed giraffe or a birthday greeting card for your aunt. Be on the lookout for broken fingernail clippers.
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The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
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"Enthusiasm is the greatest asset in the world. It beats money and power and influence. It is no more or less than faith in action. " -- Henry Chester, Writer
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NIA
National Income Accounts
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