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AGGREGATE EXPENDITURE LINE: A line representing the relation between aggregate expenditures and gross domestic product used in the Keynesian cross. The aggregate expenditure line is obtained by adding investment expenditures, government purchases, and net exports to the consumption line. As such, the slope of the aggregate expenditure line is largely based on the slope of the consumption line (which is the marginal propensity to consume), with adjustments coming from the marginal propensity to invest, the marginal propensity for government purchases, and the marginal propensity to import. The intersection of the aggregate expenditures line and the 45-degree line identifies the equilibrium level of output in the Keynesian cross.
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                           FREE RESOURCE: A resource that can be used to produce consumer-satisfying goods and services without imposing an opportunity cost on society by preventing the production or consumption of other consumer-satisfying goods or services. Production using free resources often results in free goods. A resource is free if it can be used to produced all of the goods that people want or need it to produce... and then some. In other words, the use of the resource to produce one good does not prevent the production of other goods. There is more than enough of the resource to do everything that everyone wants it to do.Free, Not UnlimitedBeing free, however, does not mean that a resource is unlimited. Free resources are inevitably limited resources. Resources are free because the available quantity exceeds the desired use. This situation can exist for a couple of interrelated reasons.- One, society has little use for the resource. Many scarce resources in today's modern economy were once free. They were free because society had very little use for the resources. Petroleum is an example. Before the development of the internal combustion engine, society had limited use for petroleum. There was more than enough to satisfy those uses.
- Two, the resource is useful, but extremely abundant. A few resources are quite useful and even essential to the modern economy, but free because the available quantity far exceeds the desired use. Air offers the best example. Although air is extremely useful (human life could not exist without it), abundance makes it a free resource in most circumstances (exceptions being an airtight bank vault, an orbiting spacecraft, or a sunken submarine).
In both cases the resource is limited and provides some use to society. It is free only because it is abundant relative to the desired use.No Market, Zero PriceBeing free has one important, practical interpretation. The market price of the resource is zero. In fact, free resources are not traded through markets. Market trades are not possible. If a resource is sufficiently abundant to satisfy all existing wants and needs, then no one can sell it, no one can charge a price to transfer ownership. The bottom line: A free resource is quite literally free. Moreover, efficiency is served if the price of a free resource is zero. Efficiency is achieved by the equality between price and cost. Because a free resource is abundantly available, the use by one does not impose an opportunity cost on other users. With zero opportunity cost, a zero price achieves efficiency. However, while a resource might be free today, should conditions change, it might not be free tomorrow. A resource is free as long as the available quantity exceeds its desired use. Should its availability become limited or its use expanded, then a free resource becomes a scarce resource. Again, while air is a free good most of the time across most of this planet, if pollution reduces availability or population growth increases the need, free air would cease to be. A Word About SurplusesAt first glance, a free resource would seem to be equivalent to a market surplus, that the two are one and the same thing. A closer look, though, reveals otherwise. A surplus depends on the existing market price. If the market price is above the equilibrium price, then the quantity supplied exceeds the quantity demanded AT THE MARKET PRICE, and a surplus results. However, at a different price, the surplus vanishes. In contrast, a free resource exists if the available quantity exceeds the desired use at a ZERO price. Because there is no market for a free resource, the notion of market surplus really has no relevance. In contrast, a scarce resource exists if the desired use exceeds available quantity at a zero price. However, because a scarce good is generally traded through a market, it can experience either a shortage or surplus depending on the market price relative to the equilibrium price.
Recommended Citation:FREE RESOURCE, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: March 16, 2025].
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Today, you are likely to spend a great deal of time at an auction hoping to buy either a T-shirt commemorating next Thursday or a birthday gift for your uncle. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
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"Failure will never overtake me if my determination to succeed is strong enough." -- Og Mandino, Author and Speaker
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CPI-U
Consumer Price Index-All Urban Consumers
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