The wellspring
of all economic theory is the reality of the human condition. As a finite
being, man makes a distinction between ends and means. He cannot attain his
ends by an act of will alone, but must apply means to attain his ends. Man
lives in an orderly but finite world. Using means produces only limited effects
in attaining ends. Endowed with reason, man is able to perceive the causal
connection between the use of means and the attainment of ends.
Any action
toward the attainment of an end requires surrendering the attainment of another
end with the same means. And any action using a set of means requires foregoing
using another set of means to attain the same end. Action, therefore, requires
choice. As a purposeful being, man selects what he perceives to be
higher-valued ends to pursue and what he perceives to be lower-valued sets of
means to employ.
Choice, therefore, requires a judgment of the mind. Since
attaining the end is the purpose of an action, the value a person attaches to
the attainment of the end is primary. A person attaches only derivative value
to the means used in action since they are merely aids to the attainment of the
end. Means have no value independent of the value a person attaches to the end
they help attain. The human mind imputes value to the means according to the
aid they render in attaining a valuable end. The technical properties of each
of the means that combine to attain an end can be valued differently by
different persons or by the same person at different times and, therefore, have
no causal impact on choice and action independent of the judgment of the mind.
As a temporal
being, man distinguishes between sooner and later. He can, therefore, judge the
value of attaining an end sooner differently than attaining it later. Just as
the principle of preference is implied by man's finitude, time preference is
implied by his temporality. Temporal beings prefer the satisfaction of an end
sooner to the same satisfaction later. Man places a premium on present
satisfaction over future satisfaction. Since time preference refers only to the
difference in value of the satisfaction of an end sooner instead of the same
satisfaction later, the discount a person places on the future will be uniform
across all actions with the same intertemporal structure.
Moreover, the
discount applies to all actions regardless of when a person chooses to
undertake any one of them. In choosing to take an action later, a person is
demonstrating that the value of the action in the future exceeds its value in
the present, even when the discount of the future is applied. His temporal
choice, then, conforms to the general principle of action, that he chooses a
more-highly valued alternative and forgoes a less-highly valued one. He
economizes his actions across all aspects of action subject to choice: ends,
means, place, and time.
In short, the
human mind integrates all the factors affecting human action into a systematic
whole, reconciling the objective, technical features of the world, including
time, through judgments of value in a way that renders the highest satisfaction
of ends.
The market
economy performs this integration for society. Prices are determined by the
underlying preferences of buyers and sellers. Objective factors have no
independent effect on prices, but influence prices only through preferences.
Prices of consumer goods are directly determined by the preferences consumers
have for them as expressed in their demands for the goods. Prices of producer goods
used to produce each consumer good are indirectly determined by consumer
preferences as they generate revenue for entrepreneurs to justify the demand
entrepreneurs express for them. Entrepreneurs pay each factor of production the
monetary value of its contribution to production.
If the factor
payment is made sooner than the revenue is received from the sale of the output
produced, then the payment is discounted because of time preference. This
discount of future money relative to present money is interest and determines
the pure, or time-preference, rate of interest. Because all exchange of present
money for future money of the same time structure involves time preference, the
pure rate of interest is uniform across all such intertemporal exchange. It
follows that all present goods that generate future money will have their
prices determined by discounting the future money by the rate of interest to
obtain the equivalent amount of present money. This process of capitalization
results in a uniform rate of interest as the difference between the present
money spent to acquire factors of production and the future money obtained from
selling the output produced. Prices, so determined, are the basis for economic
calculation, which permits entrepreneurs to appraise the lines of production
and investment that people find most valuable.
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