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FREE TO CHOOSE: A Personal Statement
count the costs of requirements imposed by other agencies, such
as those designed to control
emissions of motor vehicles, or the
costs of land-use planning or wilderness preservation or a host of
other federal, state, and local government activities undertaken
in the name of protecting the environment.
The preservation of the environment and the avoidance of un-
due pollution are real problems and they are problems concerning
which the government has an important role to play. When all
the costs and benefits of any action, and the people hurt or
benefited,
are readily identifiable, the market provides an ex-
cellent means for assuring that only those actions are under-
taken for which the benefits exceed the costs for all participants.
But when the costs and benefits or the people affected cannot be
identified, there is a market failure of the kind discussed in Chap-
ter 1 as arising from "third-party" or neighborhood effects.
To take a simple example, if someone upstream contaminates
a river, he is, in effect, exchanging bad water for good water with
people downstream. There may well
be terms on which the people
downstream would be willing to make the exchange. The problem
is that it isn't feasible to make that transaction the subject of a
voluntary exchange, to identify just who got the bad water that
a particular person upstream was responsible for, and to require
that his permission be obtained.
Government is one means through which we can try to com-
pensate for "market failure," try to use our resources more effec-
tively to produce
the amount of clean air, water, and land that
we are willing to pay for. Unfortunately, the very factors that
produce the market failure also make it difficult for government
to achieve a satisfactory solution. Generally, it is no easier for
government to identify the specific persons who are hurt and
benefited than for market participants,
no easier for government
to assess the amount of harm or benefit to each. Attempts to use
government to correct market failure have often simply substi-
tuted government failure for market failure.
Public discussion of the environmental issue is frequently char-
acterized more by emotion than reason. Much of it proceeds as
if the issue is pollution versus no pollution, as if it were desirable
and possible to have a world without pollution. That is clearly