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OPPORTUNITY COST: The highest valued alternative foregone in the pursuit of an activity. This is a hallmark of anything dealing with economics--and life for that matter--because any action that you take prevents you from doing something else. The ultimate source of opportunity cost is the pervasive problem of scarcity (unlimited wants and needs, but limited resources). Whenever limited resources are used to satisfy one want or need, there are an unlimited number of other wants and needs that remain unsatisfied. Herein lies the essence of opportunity cost. Doing one thing prevents doing another.

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MACROECONOMIC MARKETS

Three sets of markets that make up the macroeconomy--product, financial, and resource--which exchange the three primary types of macroeconomic commodities--gross production, legal claims, and factor services. The four macroeconomic sectors--household, business, government, and foreign--interact through these three sets of markets. The primary objective of macroeconomic theories is to explain activity that takes place in these three sets of markets.

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PURPLE SMARPHIN
[What's This?]

Today, you are likely to spend a great deal of time wandering around the downtown area hoping to buy either a package of 3 by 5 index cards, the ones without lines or a blue mechanical pencil. Be on the lookout for letters from the Internal Revenue Service.
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This isn't me! What am I?

Cyrus McCormick not only invented the reaper for harvesting grain, he also invented the installment payment for selling his reaper.
"We tend to forget that happiness doesn't come as a result of getting something we don't have, but rather of recognizing and appreciating what we do have."

-- Fredrick Koeing

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Bayesian VAR (Vector Autoregression)
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