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ABSTRACTION: Simplifying the complexities of the real world by ignoring (hopefully) unimportant details while doing economic analysis. Abstraction is often criticized because it's, well, it's JUST NOT REALISTIC. However, when done correctly (ignoring things that JUST DON'T MATTER), then the pursuit of knowledge is greatly enhanced by abstraction. For example, when travelling cross country along a high-speed interstate highway, a paper road map is a handy tool. It shows towns and cities along the way, the major intersections, rest stop locations, and other important points of interest. However, it ignores unimportant details. It doesn't realistically show the location of every tree, bush, or blade of grass. Why bother? This information won't enhance your road trip.
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FIXED INPUT An input whose quantity cannot be changed in the time period under consideration. The relevant time period is usually termed the short run. The most common example of a fixed input is capital. The alternative to fixed input is variable input. A fixed input, such as capital, provides the "capacity" constraint for the short-run production of a firm. A variable input, such as labor, provides the means of changing short-run production. As larger quantities of a variable input are added to a fixed input, the variable input becomes less productive, which is the law of diminishing marginal returns.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time at the confiscated property police auction seeking to buy either a how-to book on surfing the Internet or a computer that can play music and burn CDs. Be on the lookout for jovial bank tellers.
Your Complete Scope
This isn't me! What am I?
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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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"The ideals that have lighted my way, and time after time have given me new courage to face life cheerfully, have been kindness, beauty and truth. " -- Albert Einstein, physicist
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GARCH
Generalized Autoregressive Conditional Heteroskedasticity
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