Justice Unconceived: How Posterity Has Rights
Yale Journal of Law & the Humanities
Volume 14 | Issue 2
Article 4
January 2002
Justice Unconceived: How Posterity Has Rights
Aaron-Andrew P. Bruhl
Follow this and additional works at: https://digitalcommons.law.yale.edu/yjlh
Part of the History Commons, and the Law Commons
Recommended Citation
Aaron-Andrew P. Bruhl, Justice Unconceived: How Posterity Has Rights, 14 Yale J.L. & Human. (2002).
Available at: https://digitalcommons.law.yale.edu/yjlh/vol14/iss2/4
This Article is brought to you for free and open access by Yale Law School Legal Scholarship Repository. It has been accepted for inclusion in Yale
Journal of Law & the Humanities by an authorized editor of Yale Law School Legal Scholarship Repository. For more information, please contact
.
Bruhl: Justice Unconceived
Note
Justice Unconceived:
How Posterity Has Rights
Aaron-Andrew P. Bruhl*
INTRODUCTION
This Note advances a rights-oriented approach to our moral and
legal relations with people who will exist long after we die. To understand the theoretical hurdles such an account must overcome, it is
helpful to begin with an example.' Its facts are stylized, but it is not
purely hypothetical.
Suppose that we must choose one of two policies, Depletion or
*
J.D. candidate, Yale Law School; M.Phil., University of Cambridge, 2000. Ross Harrison and Matthew H. Kramer gave me extremely helpful comments on an earlier version of
this project, and the Journal's editors have also provided excellent suggestions. Kramer was
especially generous with his time and encouragement, going far beyond what duty required. I
bear responsibility for all errors. The reader should note that I typically use "persons" and
"people" interchangeably.
1. This example, to which I shall refer a number of times, is adapted from DEREK PARFIT,
REASONS AND PERSONS § 123 (1984).
Published by Yale Law School Legal Scholarship Repository, 2002
1
Yale Journal of Law & the Humanities, Vol. 14, Iss. 2 [2002], Art. 4
Yale Journal of Law & the Humanities
[Vol. 14:393
Conservation. If we choose Depletion, the world in the year
2200 will be much less hospitable than our world in a number of
ways: fewer resources, more pollution, a weakened ozone layer,
more vector-borne disease, less biological diversity, and so forth.
Conditions in the Depleted future certainly will not be so dire as
to make its inhabitants regret having been born, but their lives
will in general be much more difficult than our lives today.
Under the policy of Conservation, in contrast, we can expect the
world of 2200 generally to resemble our own world. Suppose
further that pursuing Depletion rather than Conservation advances the self-interested aims of those of us alive today to only
a very slight degree.
Most of us intuitively believe that it would be wrong to choose Depletion, and we would look askance at any moral theory that did not
ratify our reaction. Yet many of our normally reliable forms of moral
reasoning have an extremely difficult time explaining why the adoption of Depletion would be wrong.
The difficulty results from combining an entirely plausible normative precept with certain facts about human reproductive biology.
Although it might be a discomfiting thought, the realities of human
reproduction make the existence of any particular individual a radically contingent matter. If a small town lacks its own high school,
teenagers from that town will go to school with people from neighboring towns; some will eventually have children with people from
the other town. Romantic tales of fated love notwithstanding, many
of these couples would not have formed if school officials had decided that the small town should have its own school. Instead, different people would have met, and, later, different children would be
conceived of different combinations of gametes. Even if some of the
same couples formed, the children they produced would not be the
same children. This is because identity depends on when one was
conceived. A child conceived at a different time would develop from
a different combination of egg and sperm, and it would be a different
child.2
When it comes to affecting the identities of future people, even an
event as relatively minor as the school officials' decision will have
profound consequences. In truth, almost any trivial event can pre-
2. Id. at § 119. These claims about identity are not intended to be contentious. In particular, the claim that different circumstances of conception result in a different person coming to
exist does not imply that identity (let alone other features of a person) is only a matter of genetics. The position in the text is perfectly consistent with the claim that different environments
and experiences also result in different people existing. Indeed, the same policy decisions that
can cause different sex cells to meet will often affect other determinants of identity as well.
https://digitalcommons.law.yale.edu/yjlh/vol14/iss2/4
2
Bruhl: Justice Unconceived
20021
Bruhl
vent any two particular reproductive cells from meeting. A substantial policy choice such as that between Conservation and Depletion,
even if it had only a modest initial impact on our lives, would easily
result in the existence of entirely different persons after several
rounds of procreation.3
Now add to these facts about biology the plausible moral principle
that an act cannot be wrong if it cannot possibly harm anyone or
make anyone who will ever live any worse off in any way. Or, in
slightly different terms, the moral proposition is that one alternative
cannot be morally worse than another unless there is someone for
whom it is worse. Yet if we consider the persons who will exist in
2200 if we choose Depletion, it is difficult to see what kind of complaint those individuals could have against us. They certainly cannot
claim to have been made any worse off because of our policy decision, for they would not exist at all, and not lead their worthwhile
lives, had we chosen Conservation. If we had acted better and chosen
Conservation, other people would exist, and those other people
would enjoy the more comfortable Conservation world. Since Depletion is worse for no one, it thus appears that we do not act wrongly in
choosing it. All the same, most people hold a strong conviction that
choosing Depletion would be wrong.
The difficulty in locating the wrongfulness of policies such as Depletion poses a theoretical puzzle that the philosopher Derek Parfit
has termed "the non-identity problem."' The problem arises because
we normally suppose that an act is not wrong if it cannot possibly
harm anyone. But since choices like the one between Conservation
and Depletion (and many other policy decisions as well) affect the
circumstances of conception in such a way as to result in the
3. For a good exposition of how even small initial changes quickly lead to completely different populations, see Thomas Schwartz, Obligations to Posterity,in OBLIGATIONS TO FuTURE GE (...truncated)