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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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SLOPE, SAVING LINE The positive slope of the saving line is also termed the marginal propensity to save (MPS). This slope is greater than zero but less than one, reflecting induced saving and the Keynesian psychological law of consumer behavior that saving increases by less than the increase in income. The slope of the saving line provides the foundation for the slope of the leakages line used in the injections-leakages model. It thus also affects the magnitude of the multiplier process.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time browsing about a thrift store hoping to buy either clothing for your kitty cats or a set of luggage without wheels. Be on the lookout for small children selling products door-to-door.
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This isn't me! What am I?
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
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"Man is born to live, not to prepare for life. " -- Boris Pasternak, writer
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MRS
Marginal Rate of Substitution
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