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322 S T E P H E N G . P O S T

ALZHEIMER’S DISEASE ASSOCIATION (2001), Ethical Issues in Alzheimer’s Disease (Chicago: Alzheimer Disease Association).

BACON, F. (1996), The New Atlantis, in Francis Bacon: A Critical Edition of the Major Works, ed. B. Vickers (Oxford: Oxford University Press), 457 – 89.

DYSON, F. J. (1997), Imagined Worlds (Cambridge, Mass.: Harvard University Press). FINUCANE, T. E., CHRISTMAS, C., and TRAVIS, K. (1999), ‘Tube Feeding in Patients with

Advanced Dementia: A Review of the Evidence’, JAMA 282: 1365 – 70. FIRLIK, A. D. (1991), ‘Margo’s Logo’, JAMA 265: 201.

GAUDERER, M. (1999), ‘Twenty Years of Percutaneous Endoscopic Gastrostomy: Origin and Evolution of a Concept and Its Expanded Applications’, Gastrointestinal Endoscopy, 50: 879 – 82.

and PONSKY, J. L. (1981), ‘A Simplified Technique for Constructing a Tube Feeding Gastrostomy’, Surgery in Gynecology and Obstetrics, 152: 83 – 5.

GILLICK, M. R. (2000), ‘Rethinking the Role of Tube Feeding in Patients with Advanced Dementia’, New England Journal of Medicine, 342/3: 206 – 10.

GJERDINGEN, D. K., NEFF, J. A., WANG, M., and CHALONER, K. (1999), ‘Older Persons’ Opinions About Life-Sustaining Procedures in the Face of Dementia’, Archives of Family Medicine, 8: 421 – 5.

HAYLES, N. K. (1999), How We Become Posthuman: Virtual Bodies in Cybernetics, Literature and Informatics (Chicago: University of Chicago Press).

HOOK, C. C. (2004), ‘Transhumanism and Posthumanism’, in S. G. Post (ed.), The Encyclopedia of Bioethics, 3rd edn., 5 vols. (New York: Macmillan Reference).

JONAS, H. (1985), The Imperative of Responsibility: In Search of an Ethics for the Technological Age (Chicago: University of Chicago Press).

(1996), Mortality and Morality: A Search for the Good After Auschwitz (Evanston, Ill.: Northwestern University Press).

JUENGST, E. T., BINSTOCK, R. H., MEHLMAN, M., and POST, S. G. (2003), ‘The Social Implications of Genuine Anti-Aging Interventions: The Need for Public Dialogue’, Science, 299: 1323.

KASS, L. R. (2003), ‘Beyond Therapy: Biotechnology and the Pursuit of Human Development’, <http://www.bioethics.gov/material/kasspaper.html 2003>, accessed 12 Mar. 2003.

KITWOOD, T. (1997), Dementia Reconsidered: The Person Comes First (Buckingham: Open University Press).

LANE, M. A., INGRAM, D. K., and ROTH, G. S. (2002), ‘The Serious Search for an Anti-Aging Pill’, Scientific American, 287: 36 – 41.

MACINTYRE, A. (1999), Dependent Rational Animals: Why Human Beings Need the Virtues

(Chicago: Open Court).

MASORO, E. J. (2001), Caloric Restriction’s Effects on Aging: Opportunities for Research on Human Implications, Journal of Gerontology, ser. a, 56a, special issue 1.

NIEBUHR, R. (1956), An Interpretation of Christian Ethics (New York: Meridian).

PARTRIDGE, L., and GEMS, D. (2002), ‘A Lethal Side-Effect’, Nature, 418: 921.

POST, S. G. (2000), The Moral Challenge of Alzheimer Disease: Ethical Issues from Diagnosis to Dying, 2nd edn. (Baltimore: Johns Hopkins University Press).

(2001), ‘Tube-Feeding and Advanced Progressive Dementia’, Hastings Center Report, 31/1: 36 – 42.

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et al. (1997), ‘The Clinical Introduction of Genetic Testing for Alzheimer Disease: An Ethical Perspective’, JAMA 277/10: 832 – 6.

RUDMAN, S. (1997), Concepts of Persons and Christian Ethics (Cambridge: Cambridge University Press).

SABAT, S. R. (2001), The Experience of Alzheimer’s Disease: Life Through a Tangled Veil

(Oxford: Blackwell).

SINGER, P. (1993), Practical Ethics (Cambridge: Cambridge University Press).

STOCK, G. (2002), Redesigning Humans: Our Inevitable Genetic Future (Boston: Houghton Mifflin).

US GENERAL ACCOUNTING OFfiCE (1998), Alzheimer’s Disease: Estimates of Prevalence in the U.S., HEHS-98 – 16 (Washington, DC: GAO, 28 Jan.).

VOLICER, L., and HURLEY, A. (eds.) (1998), Hospice Care for Patients with Advanced Progressive Dementia (New York: Springer).

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D E AT H I S A

P U N C H I N T H E

JAW:

L I F E - E X T E N S I O N

A N D I T S

D I S C O N T E N T S

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F E L I C I A N I M U E AC KE R M A N

My hospice room is rose and blue.

The blue is like the sky.

They think that if you’re happy here,

You’ll be content to die.

They proffer comfort, warmth, and peace,

All shining like the sun.

They strive to meet your every need.

They meet all needs but one.

So now I have another scheme,

I thank James Dreier, Sara Ann Ketchum, Christine Overall, and Bonnie Steinbock for extremely helpful discussions; James Dreier, David Estlund, and Bonnie Steinbock for extremely useful advice about background reading; Antonio Ramirez for extremely adept research assistance; and Zelda Sondack Ackerman, soon to embark on her second century, for extremely sharp-eyed proofreading.

D E AT H I S A P U N C H I N T H E JAW 325

My object all sublime.

I’ve gotten on a transplant list, And so I bide my time.

(Ackerman 2005b)1

GRADUATE students in my department run a weblog that has solicited suggestions for ‘the worst philosophical position ever’ (Ichikawa 2004). When I suggested the position that ‘illness and mortality are good things [and] it is bad to do research on extending the human life span’,2 Jonathan Ichikawa wrote, ‘Do philosophers really hold [that view]? I find that so absurd that I have a hard time imagining anyone seriously thinking otherwise.’ I replied by citing the most powerful bioethicist in America, Leon Kass, then head of the President’s Council on Bioethics, whom the New York Times Book Review described as ‘among the most respected authorities in the field’ (Nuland 2002: 49).3 Kass has said that ‘the finitude of human life is a blessing for every human individual, whether he knows it or not’ (Kass 2002: 264). He also opposes attempts to extend the maximum human lifespan, i.e. ‘the outer limit of human longevity’ (Overall 2003: 7), which ‘has remained more or less fixed at about 120’ (Overall 2003: 10). This chapter will argue that Ichikawa’s common-sense intuition is basically right. The achievement of greatly extended human life and even (or especially) immortality would be like the discovery of electricity. It would bring many problems and dislocations and would even do some people more harm than good, but overall it would be an enormous boon to humanity.

Like other secular philosophers who write on this topic, I will assume there is no afterlife and hence that death is ‘the unequivocal and permanent end of our existence’ (Nagel 1979: 1). Except where indicated, I use ‘immortality’ to mean earthly immortality rather than immortality in a religious sense. This assumption accords with what I believe, but my reason for making it here is to delimit the scope of this chapter. It is hardly surprising that, after seeing ‘a part of the adventures of the [Holy Grail]’, Sir Galahad ‘fell in his prayer long time to Our Lord, that at what time he asked, that he should pass out of this world’, because of the ‘great

I dedicate this chapter to my mother, Zelda Sondack Ackerman (b. 1912), in anticipation of a time when nonagenarians will have most of their lives ahead of them.

The chapter title comes from the following letter of mine in the Arts and Leisure Section of the New York Times (Ackerman 2002). ‘William Hurt, a star of the film ‘‘Tuck Everlasting’’, is quoted as saying, ‘‘Most people think of life as the story of life and death. Death is a bookend. If you take that bookend away, what have you got?’’ This is typical of attempts to sugar-coat death. Here’s an alternative metaphor: Death is a punch in the jaw. Take away the punch and what have you got? An [unpunched] jaw.’

1 Also see ‘Flourish Your Heart in This World’ (Ackerman 1998b) and n. 10 below. ( This poem first appeared in Ragged Edge Online and is reprinted by permission.)

2 I actually wrote ‘so’ rather than ‘and’, but that was a poor formulation.

3 Many assessments of Kass are more critical, however. For example, see Mooney (2001) and McGee (2003). Even Nuland’s largely admiring review expresses reservations, acknowledging that ‘most [readers] will . . . recognize the need for [more] flexibility’ (Nuland 2002: 49) than Kass offers.

326 F E L I C I A N I M U E AC KE R M A N

joy [he anticipated at seeing] the Blessed Trinity every day, and the Majesty of Our Lord’ in the afterlife (Malory 1969: 367, 368). Admittedly, belief in an afterlife does not always bring willingness to leave earthly life. Believers may be unwilling to leave their familiar lives and loved ones, or they may fear ending up in hell. But when believers and unbelievers talk about death, they are talking about two entirely different things.4 Richard Momeyer points out that views that do ‘not regard death as final, as the complete cessation of consciousness and personhood’ should be ‘regarded as but sophisticated forms of death denial’ (Momeyer 1988: 8). Amusingly illustrating this point is the career of Elisabeth Kubler¨-Ross, who began by combating the ‘denial of death’ and finished by denying that death ends one’s conscious existence.5

Why is death bad? What Nagel calls the ‘natural’ answer is that ‘death is an evil [not] because of its positive features, but only because of what it deprives us of ’ (Nagel 1979: 1), i.e. ‘all possibility of satisfying experience’ (Momeyer 1988: 50). Why, then, would anyone object to greatly extended human life? Such objections fall into two categories.6 Objections in the first category hold that greatly extended life would harm the person living it. Objections in the second category hold that greatly extended human life would bring some other sort of harm; for example, harm to society or to the human species.

I will consider these types of objection in turn. My discussion will deal both with greatly extended finite life and with immortality and will use the term ‘greatly extended life’ to cover both. Except where indicated, I will proceed from some assumptions adapted from Christine Overall (2003: 96, 128 ff.). First, people would know the life expectancy in their society or would know (or at least have good reason to believe) that they were immortal. Second, everyone would have the opportunity to choose greatly extended life. Third, greatly extended life would not be mandatory; people would be able to opt out at any point.

WOULD GREATLY EXTENDED LIFE BENEfiT OR HAR M THE PERSON LIV ING IT?

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If there is one position on which secular bioethicists approach unanimity, it is that life is worth extending only if the quality is satisfactory. As David Gems puts it, ‘Most of us would agree that it makes little sense to postpone death once our quality of life has diminished beyond a certain point’ (2003a: 34). This seemingly unproblematic statement covers up some crucial questions. What is that point? Who decides? The conventional wisdom that we should avoid ‘endlessly prolonging

4

See Overall (2003: 178 – 9).

5 See Momeyer (1988: 9) and Rosen (2004).

6

See Singer (1991); Overall (2003, ch. 1); President’s Council on Bioethics (2003a, ch. 4).

D E AT H I S A P U N C H I N T H E JAW 327

the morbid phase of our lives’ (Gems 2003a: 34) should be assessed in light of the fact that many seriously ill people find the ‘morbid phase’ of their lives well worth prolonging. ‘Study after study has concluded that many healthy people often say they would never want to die in an intensive care unit, but may change their minds when they are very sick’ (Kolata 1997). One study found that ‘The majority of [a group of 244 patients with various serious illnesses] wanted to receive a life-sustaining treatment if it would prolong life for any length of time’ (Danis et al. 1996: 1813). Another study, emphasizing the disparity of values between the healthy and the ill, found that ‘Patients with cancer are much more likely to opt for radical treatment [a grueling course of chemotherapy] with minimal chance of [cure or if it offers as little as three months of life-prolongation] than people who do not have cancer, including medical and nursing professionals’ and also including healthy controls matched with patients for ‘age and sex, as well as for occupation and hence educational and social class’ (Slevin et al. 1990: 1458, 1460), i.e. a control group selected to represent the attitudes of the patients before they had cancer. And a study of patients with end-stage kidney disease concluded that ‘chronically ill people cherish their lives, despite the appearance [to outsiders] of inadequate quality’ (Gutman 1988: 899).

Here it is crucial to recognize that expertise lies with the patients. They have first-hand knowledge of what it is like to be seriously ill. So their desire to extend the ‘morbid phase’ of their lives seems prima facie rational. This point will resurface in my discussion of resource allocation. For the present, note that even Overall — who perceptively warns against assuming that ‘life with chronic health problems or disabilities is not worth living’, and stresses that decisions about ‘the minimum conditions of quality of life that make existence worth sustaining’ should be made by competent patients, ‘not their families and not their health-care providers’ — says, ‘If the available medical, social, and material resources are so limited that one’s extra stretch of time is lived in misery, then that is a problem, and no prolongevist advocates the extension of human life if it can be lived only in poverty, pain, and ill health’ (2003: 188, 191, 192, 41; italics added).7 She is mistaken. I advocate this (for people who desire it). Of course, I believe that wealth, comfort, and good health are better than poverty, pain, and ill health. But the blanket presumption that the latter states bring ‘misery’ that is worse than death is disrespectful to those who, having experienced them, disagree. (Perhaps they disagree because they have found that these states, far from entailing living in misery, do not preclude such pleasures as love, friendship, television, music, reading, and thinking.) Thus, the popular phrase ‘compression of morbidity’, i.e. ‘reduction of . . . the end-of-life morbidity characteristic of old age’

7 Elsewhere in her book she offers the more moderate formulation ‘Prolongevists . . . advocate the extension of life only if it will not involve the severe illness, unrelieved pain, or disablement that undermine an individual’s capacity to pursue his or her life’s projects’ (Overall 2003: 65 – 6; italics added). This formulation is more respectful of individual differences in values. Also see Overall (2003: 96).

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(Battin 1987: 328), glosses over the difference between curing a sick person and denying him treatment that would extend his ‘morbid’ life.8 And Overall’s claim that ‘medical treatments that . . . extend an end-state of suffering, extreme dementia, or relentless deterioration must be recognized as pointless or even, at worst, as harmful’ (2003: 190; italics added) conflicts with her above-quoted views about patient self-determination, given that some competent people choose ‘relentless deterioration’ over death.

This consideration is particularly important in view of some ideas behind the conventional wisdom about when life is worth prolonging. Thus, M. Pabst Battin identifies ‘increasing debility, dependence . . . loss of communication and affection . . . isolation’ as part of an ‘unfortunately realistic picture of old age’ constituting ‘human degradation’ that can lead to a sick old person’s ‘increasingly poor self-image’ and desire to die (1980: 274). By contrast, other philosophers, such as Susan Wendell, question independence as an ideal, pointing out that no one is completely independent and that ‘ ‘‘independence’’ . . . is defined according to a society’s expectations about what people ‘‘normally’’ do for themselves and how they do it’ (Wendell 1996: 145). Overall says, ‘There are varying patterns of dependence throughout the life span’ and ‘to the extent that [old people] are dependent, their dependence should not be interpreted as evidence that increased longevity is bad’ (2003: 188). Such views are more logical as well as more humane than the view that ‘dependence’ is characteristic of only some people’s lives or is inherently degrading.

Three more points are worth noting here. First, the ‘increasingly poor self-image’ of the old, ill, and disabled, like the poor self-image some blacks may have in a racist society, arises ‘from the low value . . . society places on people of a certain sort, rather than from anything inherent in the person’s condition’ (Ackerman 1998a: 151 – 2). Second, present-day society over a quarter-century after Battin’s article appeared, offers the old, ill, and disabled a new opportunity to bypass ageism and ableism and to overcome isolation ‘in a better world, where there is neither young nor old, healthy nor crippled . . . On the Internet’ (Ackerman 2005c: 43)9 or in online relationships with people who have chosen to identify themselves online as old, ill, and/or disabled. Third, I am not claiming that all sick people want to extend their lives even if they cannot be cured, just that many bioethicists have shortchanged those who do.

Overgeneralization is hardly rare in discussions of whether greatly extended life would benefit the person living it. For example, Kass, whose opposition to attempts to extend the maximum human lifespan rests partly on his ad hominem ‘For most of us . . . the desire to prolong the lifespan (even modestly) must be seen as expressing a desire never to grow old and die’,10 suggests the following ‘virtues of mortality’:

8 See the discussion in Battin (1987: 328 – 36).

9 This reference is to a short story about a crippled old woman who does just that.

10 See also President’s Council on Bioethics (2003a: 162, 186). For a dissenting view, see Blackburn and Rowley (2004: 0420). (Of course, I also reject Kass’s view that there is something wrong with a

D E AT H I S A P U N C H I N T H E JAW 329

interest and engagement, seriousness and aspiration, beauty and love, and virtue and moral excellence (Kass 2002: 263, 266 – 9).11 I will discuss these in turn.

As to the first, Kass offers mainly not arguments but rhetorical questions designed to suggest that interest and engagement would decline as life proceeded endlessly. The most plausible answers, however, are far from what he supposes. Thus, his question ‘Would the Don Juans of our world feel better for having seduced 1,250 women rather than 1,000?’ (Kass 2002: 266) receives this apt reply from Gems: ‘on his deathbed, the extra 250 women might not seem that important to Don Juan. But if he was at only number 1,000 and was offered an extra 250, one can only imagine his joy’ (2003a: 35). Kass’s view that greatly extended life would bring diminishing interest and engagement pays scant attention to individual differences. The same problem is evident in his famous anti-cloning slogan ‘Shallow are the souls that have forgotten how to shudder’ (Kass 2002: 150) — a slogan that ‘invites this reply: Narrow are the souls that cannot comprehend that different souls shudder at different things. I shudder at the thought of being denied lifesaving technology because it violates Kass’s particular conception of dignity’ (Ackerman 2005a).12

Kass’s scant respect for individual differences is ironic in view of his criticism of bioethics as ‘Universalist in conception [and thus caring] little for the variety of human types’ (2002: 65).13 His discussion ignores the large philosophical literature on whether greatly extended life would lead to boredom. Such literature is often very sensitive to differences among various types of people and various types of pleasures. Thus, Overall says, ‘The perceived value of endless life could well be closely related to the general type of person one is and the sort of life one chooses to live’ (2003: 179). Gems says, ‘Some people seem especially able to enjoy endless repetition of the same experience’ (2003a: 35).14 Moreover, there are some experiences whose repetition few people find boring. As Momeyer points out, ‘so long as appetite remains strong, food and sexual union remain satisfying’ (1988: 19).

desire never to grow old and die.) Note also Robin Marantz Henig’s castigation of patients who seek to combine the comforts of hospice care with the opportunity for life-prolonging medical treatment. She claims they are ‘indulg[ing] the fantasy that dying is somehow optional’ (Henig 2005: 28). But she gives no evidence that they are indulging such an (at-present) irrational fantasy, rather than pursuing the rational goal of living longer without sacrificing comfort care. In fact, it seems a matter of basic human decency not to force patients into the cruel choice between comfort care and life-prolonging care (see Ackerman 1990: 315). But none of the twelve published letters commenting on Henig’s article criticizes her on this score and some even praise her for ‘compassion’ (Libert 2005) and ‘great sensitivity’ (Rogatz 2005). This is a chilling illustration of how public opinion seems to be out of sympathy with terminally ill people who seek to prolong their lives rather than accept death.

11The President’s Council on Bioethics suggests that these ‘virtues of mortality’ might be endangered not only by immortality ‘but even [by] more modest prolongations of the maximum lifespan, especially in good health, that would permit us to live as if there were always tomorrow’ (President’s Council on Bioethics 2003a: 297).

12See also the discussion in Naam (2005).

13Even Daniel Callahan, who calls Kass ‘one of the most stimulating people I have ever known’, has

criticized Kass’s ‘distorted, out-of-date picture of the present field of bioethics’; see Callahan (2002). 14 Also see Overall (2003: 147 ff.).

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But sensual satisfactions are far from all that can keep immortals from boredom. People can also be continually learning new things, at least in so far as their mental capacities are up to the task (which hardly seems an implausible supposition in a world scientifically advanced enough to achieve immortality).15 Gems distinguishes among relatively static life plans, ‘such that the desired future is essentially a continuation of things as they are’ (and which may lead to boredom in those unable to enjoy repetition), fixed goal life plans, where ‘the value of life extension will depend on whether the plan is realizable’ (Gems 2003a: 38), and openended life plans (such as that of a medical researcher who wants to help as many people as possible), where the value of greatly extended life is high. Overall suggests that the pursuit of various excellences ‘could . . . occupy us during earthly immortality. Is it so far-fetched to suppose that a deep understanding of this infinite universe would take an eternity?’ (2003: 151). James Lindemann Nelson distinguishes between Margaret Walker’s notion of a career self, who sees his life ‘as a unified field in which particular enterprises, values, and relationships are (in principle) coordinated in the form of a ‘‘rational life plan’’ . . . or a ‘‘quest’’ . . . or a ‘‘project’’ ’ and a ‘seriatim self ’, deriving from Hilde Lindemann Nelson’s concept of ‘living life seriatim’, where life is seen ‘less as an overall unified project and more as a set of fits and starts’ (Nelson 1999: 121, 122). Overall points out that either type of self can appreciate greatly extended life. The career self may ‘value continued survival, for the career self sees human existence as an open-ended set of challenges’ and thus may ‘continue to seek opportunities for activity, striving, self-development, and the achievement of goals’ (Overall 2003: 186). ‘The seriatim self might choose . . . to enjoy a life lived without further conquests’ (Overall 2003: 181). Overall discusses the possibility of personal transformation while retaining one’s core identity, as happens in our society to people who undergo religious or other conversions (Overall 2003: 158 – 61). Clearly, the issue is far more complex than Kass’s discussion recognizes, especially since, as Overall points out, the career self and the seriatim self are not mutually exclusive (Overall 2003: 235 – 6 nn. 15, 16) and, as Gems points out, life plans can change (Gems 2003a: 38).

But Overall also expresses reservations about immortality. She suggests that perhaps, given the limits of people’s abilities, eventually, ‘Although the repetition of old familiar activities would still be possible for the immortal . . . every activity he undertook would eventually be ‘‘used up’’ . . . and he would feel ready to die’, a problem that would ‘apply most clearly to the life of the career self ’ (2003: 166, 176). However, when she contemplates the reply that ‘the physical capacities of the immortal [could be] increased gradually and indefinitely’ so as to permit ‘the acquisition of greater and greater abilities and talents’ (2003: 171), she makes some problematic objections. For one thing, she finds this scenario difficult to imagine.

15 See the speculative discussions in Puccetti (1978), Gems (2003a: 36 – 7), Overall (2003: 167 – 73), Kurzweil (2005: 64 – 5), and Naam (2005, ch. 9).

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A world of immortals, though, would be scientifically advanced way beyond our present level. Why couldn’t we imagine such continued human development?16

Overall further objects that in such a scenario we would have godlike abilities and hence not be living a ‘recognizably human life’ (2003: 173). And Kass holds that ‘to argue that human life would be better without death is . . . to argue that human life would be better being something other than human’ (2002: 265). This makes me wonder what people in the time of Sir Thomas Malory (the fifteenth century) would have said about beings who went to the moon, received new hearts, talked with others thousands of miles away, and held it to be self-evident that all men are created equal. Progress means change.17 Why shouldn’t scientific progress cause people to have characteristics previously deemed beyond human possibility? Why should we be ‘defining humans in terms of our limitations rather than by our ability to supersede our limitations’ (Kurzweil 2005: 67)? Consider also Nagel’s apt observation ‘A man’s sense of his own experience . . . does not embody [an] idea of a natural limit. His existence defines for him an essentially open-ended possible future’ (1979: 9 – 10).

Two further points are important here. First, since I am assuming that immortality would be optional and reversible, people who found their greatly extended lives unsatisfactory would be as free to commit suicide as are people in our world. Although some who long for death might have scruples against suicide just as some do in our world, there could be an equivalent of ‘passive euthanasia’, where immortality would be maintained by a substance that people could simply choose to stop taking.18 Second, even in cases where Kass is right that eternal life brings diminishing returns, the real question is not whether this extra life is as fulfilling as the early part, but whether it is better than nothing. If boredom is taken to be a reason against immortality, see how high the bar for acceptable quality of life has been raised. ‘Bored to death’ is a figure of speech. How many people deem boredom a fate literally worse than death?19 Overall considers the possibility that the boredom could be so extreme as to make ‘the experience of immortality . . . analogous to the experience of severe insomnia, in which, having been awake for seemingly endless hours without respite, one feels tired of being awake and exhausted by being oneself and wants only the nothingness of unconsciousness that is afforded, temporarily, by deep sleep’ (2003: 145). This certainly does not correspond to my own experience of severe insomnia, which has led me to long for sleep not as a temporary escape from consciousness but as a means to an improved state of consciousness upon awakening. Moreover, the unpleasant state of intense physical exhaustion, which frequently accompanies severe insomnia, seems less characteristic of boredom.

Kass’s other ‘virtues of mortality’ are equally problematic. He asks, ‘Could life be serious or meaningful without the limit of mortality?’ and cites the Greek gods as living ‘shallow and rather frivolous lives’ (Kass 2002: 266). But he himself admits

16

See the references in n. 15.

17 See Bostrom (2003, 2005) and Naam (2005).

18

For a case of this sort, see Williams (1975).

19 Also see Steele (1976).

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