November 29, 2015 

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IMPLICIT OPPORTUNITY COST: An opportunity cost that does NOT involve a money payment or a market transaction. This should be contrasted with explicit cost that DOES involve a money payment or a market transaction. The common misconception among non-economists out there in the real world is that the term "cost" is synonymous with the term "payment," that is, all costs are explicit costs, to be a cost you have to give up some money. Well, I'm here to tell you that this isn't true. Cost is opportunity cost. It's the satisfaction NOT received from activities NOT pursued. It's the value of foregone production. And not all opportunity costs involve a money payment.

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DEMAND: The willingness and ability to buy a range of quantities of a good at a range of prices, during a given time period. Demand is one half of the market exchange process; the other is supply. This demand side of the market draws inspiration from the unlimited wants and needs dimension of the scarcity problem. People desire the goods and services that satisfy our wants and needs. This is the ultimate source of demand.

     See also | price | demand price | quantity demanded | market | exchange | supply | unlimited wants and needs | scarcity | satisfaction | income | demand curve | demand shock | demand determinants | demand space |

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DEMAND, AmosWEB GLOSS*arama,, AmosWEB LLC, 2000-2015. [Accessed: November 29, 2015].

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A curve that graphically represents the relation between average factor cost incurred by a firm for employing an input and the quantity of input used. Because average factor cost is essentially the price of the input, the average factor cost curve is also the supply curve for the input. The average factor cost curve for a firm with no market control is horizontal. The average factor cost curve for a firm with market control is positively sloped.

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July 2015
Up slightly from June 2015 Source: B L S

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Today, you are likely to spend a great deal of time touring the new suburban shopping complex trying to buy either a T-shirt commemorating the second moon landing or a coffee cup commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki. Be on the lookout for defective microphones.
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
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