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compatible with a human-centred ethic to see economic growth
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based on the exploitation of irreplaceable resources as something
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that brings gains to the present generation, and possibly
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the next generation or two, but at a price that will be paid by
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273
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Practical Ethics
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every generation to come. But in the light of our discussion of
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speciesism in Chapter 3, it should also be clear that it is wrong
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to limit ourselves to a human-centred ethic. We now need to
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consider more fundamental challenges to this traditional Western
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appro~.s;h to environmental issues.
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IS THERE VALUE BEYOND SENTIENT BEINGS?
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Although some debates about significant environmental issues
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can be conducted by appealing only to the long-term interests
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of our own species, in any serious exploration of environmental
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values a central issue will be the question of intrinsic value. We
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have already seen that it is arbitrary to hold that only human
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beings are of intrinsic value. If we find value in human conscious
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experiences, we cannot deny that there is value in at least some
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experiences of non-human beings. How far does intrinsic value
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extend? To all, but only, sentient beings? Or beyond the boundary
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of sentience?
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To explore this question a few remarks on the notion of'intrinsic
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value' will be helpful. Something is of intrinsic value if
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it is good or desirable in itself; the contrast is with 'instrumental
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value', that is, value as a means to some other end or purpose.
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Our own happiness, for example, is of intrinsic value, at least
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to most of us, in that we desire it for its own sake. Money, on
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the other hand, is only of instrumental value to us. We want it
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because of the things we can buy with it, but if we were marooned
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on a desert island, we would not want it. (Whereas
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happiness would be just as important to us on a desert island
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as anywhere else.)
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Now consider again for a moment the issue of damming the
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river described at the beginning of this chapter. If the decision
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were to be made on the basis of human interests alone, we
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would balance the economic benefits of the dam for the citizens
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of the state against the loss for bushwalkers, scientists, and
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others, now and in the future, who value the preservation of
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274
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The Environment
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the river in its natural state. We have already seen that because
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this calculation includes an indefinite number of future generations,
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the loss of the wild river is a much greater cost than
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we might at first imagine. Even so, once we broaden the basis
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of our decision beyond the interests of human beings, we have
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much more to set against the economic benefits of building the
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dam. Into the calculations must now go the interests of all the
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non-human animals who live in the area that will be flooded.
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A few may be able to move to a neighboring area that is suitable,
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but wilderness is not full of vacant niches awaiting an occupant;
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if there is territory that can sustain a native animaL it is most
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likely already occupied. Thus most of the animals living in the
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flooded area will die: either they will be drowned, or they will
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starve. Neither drowning nor starvation are easy ways to die,
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and the suffering involved in these deaths should, as we have
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seen, be given no less weight than we would give to an equivalent
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amount of suffering experienced by human beings. This
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will significantly increase the weight of considerations against
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building the dam.
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What of the fact that the animals will die, apart from the
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suffering that will occur in the course of dying? As we have
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seen, one can, without being guilty of arbitrary discrimination
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on the basis of species, regard the death of a non-human animal
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who is not a person as less significant than the death of a person,
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since humans are capable of foresight and forward planning in
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ways that non-human animals are not. This difference between
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causing death to a person and to a being who is not a person
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does not mean that the death of an animal who is not a person
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should be treated as being of no account. On the contrary,
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utilitarians will take into account the loss that death inflicts on
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the animals - the loss of all their future existence, and the
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experiences that their future lives would have contained. When
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a proposed dam would flood a valley and kill thousands, perhaps
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millions, of sentient creatures, these deaths should be given
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great importance in any assessment of the costs and benefits of
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275
|
Practical Ethics
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building the dam. For those utilitarians who accept the total
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view discussed in Chapter 4, moreover, if the dam destroys the
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habitat in which the animals lived, then it is relevant that this
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loss is a continuing one. If the dam is not built, animals will
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presumably continue to live in the valley for thousands of years,
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experiencing their own distinctive pleasures and pains. One
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might question whether life for animals in a natural environment
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yields a surplus of pleasure over pain, or of satisfaction
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over frustration of preferences. At this point the idea of calculating
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benefits becomes almost absurd; but that does not mean
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that the loss of future animal lives should be dismissed from
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our decision making.
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That, however, may not be all. Should we also give weight,
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not only to the suffering and death of individual animals, but
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to the fact that an entire species may disappear? What of the
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loss of trees that have stood for thousands of years? How much
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- if any - weight should we give to the preservation of the
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animals, the species, the trees and the valley's ecosystem, independently
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of the interests of human beings - whether economic,
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recreational, or scientific - in their preservation?
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Here we have a fundamental moral disagreement: a disagreement
|
about what kinds of beings ought to be considered in
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