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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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RETURNS TO SCALE Changes in production the occur when all resources are proportionately changed in the long run. Returns to scale come in three forms--increasing, decreasing, or constant based on whether the changes in production are proportionally more than, less than, or equal to the proportional changes in inputs. Returns to scale are the guiding principle for long-run production, playing a similar role that the law of diminishing marginal returns plays for short-run production.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time going from convenience store to convenience store seeking to buy either a birthday greeting card for your father or a T-shirt commemorating the first day of spring. Be on the lookout for fairy dust that tastes like salt.
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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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"In the business world, everyone is paid in two coins: cash and experience. Take the experience first; the cash will come later. " -- Harold S. Green, MCI founder
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RPI
Retail Price Index
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