Gustaf Arrhenius

Suppose one sets up a sequence of less-and-less valuable objects such that each object in the sequence is only marginally worse than its immediate predecessor. Could one in this way arrive at something that is dramatically inferior to the point of departure? It has been claimed that if there is a radical value difference between the objects at each end of the sequence, then at some point there must be a corresponding radical difference between the adjacent elements. The underlying picture seems to be that a radical gap cannot be scaled by a series of steps, if none of the steps itself is radical. We show that this picture is incorrect on a stronger interpretation of value superiority, but correct on a weaker one. Thus, the conclusion we reach is that, in some sense at least, abrupt breaks in such decreasing sequences cannot be avoided, but that such unavoidable breaks are less drastic than it has been suggested.

Parfit (Theoria 82:110–127, 2016) responded to the Sequence Argument for the Repugnant Conclusion by introducing imprecise equality. However, Parfit’s notion of imprecise equality lacked structure. Hájek and Rabinowicz (2022) improved on Parfit’s proposal in this regard, by introducing a notion of degrees of incommensurability. Although Hájek and Rabinowicz’s proposal is a step forward, and may help solve many paradoxes, it can only avoid the Repugnant Conclusion at great cost. First, there is a sequential argument for the Repugnant Conclusion that uses weaker and intuitively more compelling assumptions than the Sequence Argument, and which Hájek and Rabinowicz’s proposal only undermines, in a principled way, by allowing for implausible weight to be put on the disvalue of inequality. Second, if Hájek and Rabinowicz do put such implausible weight on the disvalue of inequality, then they will have to accept that a population A is not worse than another same sized population B even though everyone in B is better off than anyone in A.

According topositive egalitarianism, not only do relations of inequality have negative value, as negative egalitarians claim, but relations of equality also have positive value. The egalitarian value of a population is a function of both pairwise relations of inequality (negative) and pairwise relations of equality (positive). Positive andnegative egalitarianismdiverge, especially in different-number cases. Hence, an investigation of positive egalitarianism might shed new light on the vexed topic of population ethics and our duties to future generations. We shall here, in light of some recent criticism, further develop the idea of giving positive value to equal relations.

There are two classic principles for deciding who should have a right to vote on the laws, the All Affected Principle and the All Subjected Principle. This article is devoted, firstly, to providing a sympathetic reconstruction of the All Subjected Principle, identifying the most credible account of what it is to be subject to the law. Secondly, it shows that that best account still suffers some serious difficulties, which might best be resolved by treating the All Subjected Principle as a subset of the All Affected Principle with which the All Subjected Principle must in any case be supplemented.

This note critiques the concept of “wicked problems” and its usefulness in crises such as Covid-19. There are two problems with the concept as defined by Rittel, Webber, and those who draw from them, which undermine its value in the analysis of social policy. First, their characterisation of wicked problems is founded on a crude and false picture of science (cf. Turnbull and Hoppe 2019). Second, it is so vague that on an expansive reading all social problems are wicked problems while on a restrictive reading almost none are. Having discussed these, we close with a reflection on managing complexity and uncertainty in complex policy problems like the pandemic.

It seems to be a widespread opinion that increasing the length of existing happy lives is better than creating new happy lives and that it may be better even when the total welfare is lower in the outcome with extended lives. The chapter discusses two interesting suggestions that seem to support this idea. The first is critical level utilitarianism (CLU) and the other is view comparativism. The chapter describes the pure case of life extension versus life replacement and then presents some different views about the value of life extension, indicating some of the arguments in favor and against life extension fail. Then, it turns to the implications of critical level utilitarianism and comparativism in regards to life extension versus replacement, the main topic of this chapter. A case is presented to explain that there is a conflict between intuitions regarding life extension and comparativism.

This handbook presents up-to-date theoretical analyses of problems associated with the moral standing of future people in current decision-making. Future people pose an especially hard problem for our current decision-making, since their number and their identities are not fixed but depend on the choices the present generation makes. Do we make the world better by creating more people with good lives? What do we owe future generations in terms of justice? Such questions are not only philosophically difficult and important, but also directly relevant to many practical decisions and policy issues, including on climate, health, population control and taxation. If we are to adequately assess such issues, we must be able to determine the value of differently sized populations. The aim of this handbook is to shed light on the value of population change and the nature of our obligations to future generations, and to offer practical guidance to policy-makers as to how our duties to future generations should be discharged. It contains an extensive and accessible introduction for those unfamiliar with the topic of population ethics as well as original work from key figures in academic debates on population ethics covering three main themes: ways out of the paradoxes of population ethics, questioning some philosophical and methodological assumptions underlying these paradoxes, and several applications of population ethics to real world issues.

In constructivist contractualist theories, such as Rawls’, principles of justice should mirror beliefs that we all, in some sense, share. One would then arrive at principles that everybody could, in that sense, accept. These principles should specify, among other things, to whom to distribute the relevant benefits and burdens and to whom to assign responsibility for the distribution. In addition to this classical assignment problem, however, constructivist contractualism must also deal with a new, and quite different, assignment problem sincewhat to count as beliefs that weall share depends on how the set of people that make up the “we” is delimited. Thus, for constructivist contractualism, the questions of whom to assign a part in the justification procedure and whom to exclude, and how to justify these inclusions and exclusions, are of crucial importance. In this chapter we consider the inclusion or exclusion of future generations, and how this case illuminates a general problem for constructivist contractualism.

The repugnant conclusion can be formulated as follows: For any population consisting of people with very high positive welfare, there is a better population in which everyone has a very low positive welfare, other things being equal. As the name indicates, this conclusion appears unacceptable. Yet it has proven to be surprisingly difficult to find a theory that avoids it without implying other very counterintuitive conclusions. Moreover, the conclusion is a problem not just for total utilitarians or those committed to welfarism but for all moral theories according to which welfare matters at least when all other things are equal, which arguably is a minimal adequacy condition for any moral theory. And, not the least, how to deal with it has implications for the present generations’ duties to future generations and intergenerational justice. The question as to how the repugnant conclusion should be dealt with has thus become one of the cardinal challenges of modern ethics, and the inquiry into what it shows about the nature of ethics has opened up many new avenues for research. This chapter covers the different suggestions in the literature on how to do deal with the conclusion, both on the axiological and on the normative levels. Moreover, the conclusion and different ways of deriving it are explained in detail.

Population axiology concerns how to evaluate populations in regard to their goodness, that is, how to order populations by the relations “is better than ” and “is as good as”. This field has been riddled with paradoxes and impossibility results which seem to show that our considered beliefs are inconsistent in cases where the number of people and their welfare varies. All of these results have one thing in common, however. They all involve an adequacy condition that rules out Derek Parfit’s Repugnant Conclusion. Moreover, some theorists have argued that we should accept the Repugnant Conclusion and hence that avoidance of this conclusion is not a convincing adequacy condition for a population axiology. As I shall show in this chapter, however, one can replace avoidance of the Repugnant Conclusion with a logically weaker and intuitively more convincing condition. The resulting theorem involves, to the best of my knowledge, logically weaker and intuitively more compelling conditions than the other theorems presented in the literature. As such, it.

Suppose one sets up a sequence of less-and-less valuable objects such that each object in the sequence is only marginally worse than its immediate predecessor. Could one in this way arrive at something that is dramatically inferior to the point of departure? It has been claimed that if there is a radical value difference between the objects at each end of the sequence, then at some point there must be a corresponding radical difference between the adjacent elements. The underlying picture seems to be that a radical gap cannot be scaled by a series of steps, if none of the steps itself is radical. We show that this picture is incorrect on a stronger interpretation of value superiority, but correct on a weaker one. Thus, the conclusion we reach is that, in some sense at least, abrupt breaks in such decreasing sequences cannot be avoided, but that such unavoidable breaks are less drastic than it has been suggested.

Population axiology concerns how to evaluate populations in terms of their moral goodness, that is, how to order populations by the relations “is better than” and “is as good as”. The task has been to find an adequate theory about the moral value of states of affairs where the number of people, the quality of their lives, and their identities may vary. So far, this field has largely ignored issues about uncertainty and the conditions that have been discussed mostly pertain to the ranking of risk-free outcomes. Most public policy choices, however, are decisions under uncertainty, including policy choices that affect the size of a population. Here, we shall address the question of how to rank population prospects—that is, alternatives that contain uncertainty as to which population they will bring about—by the relations “is better than” and “is as good as”. We start by illustrating how well-known population axiologies can be extended to population prospect axiologies. And we show that new problems arise when extending population axiologies to prospects. In particular, traditional population axiologies lead to prospect-versions of the problems that they praised for avoiding in the risk-free settings. Finally, we identify an intuitive adequacy condition that, we contend, should be satisfied by any population prospect axiology, and show how given this condition, the impossibility theorems in population axiology can be extended to (non-trivial) impossibility theorems for population prospect axiology.

It seems to be a widespread opinion that increasing the length of existing happy lives is better than creating new happy lives although the total welfare is the same in both cases, and that it may be better even when the total welfare is lower in the outcome with extended lives. I shall discuss two interesting suggestions that seem to support this idea. Firstly, the idea there is a positive level of well-being above which a life has to reach to have positive contributive value to a population. This view is usually called critical level utilitarianism. Secondly, the viewthat it makes an outcome worse if people are worse off than they otherwise could have been. I shall call this view comparativism. Firstly, I shall describe what I call the pure case of life extension versus replacement. Then I shall very briefly describe some different views about the value of life extension and indicate why I think some of the arguments in favor and against life extension fail. I shall then turn to the implications of critical level utilitarianism and comparativism in regards to life extension versus replacement, which is the main topic of this chapter.

Who should have a right to take part in which decisions in democratic decision making? This “boundary problem” is a central issue for democracy and is of both practical and theoretical import. If nothing else, all different notions of democracy have one thing in common: a reference to a community of individuals, “a people”, who takes decision in a democratic fashion. However, that a decision is made with a democratic decision method by a certain group of people doesn’t suffice for making the decision democratic or satisfactory from a democratic perspective. The group also has to be the right one. But what makes a group the right one? The criteria by which to identify the members of the people entitled to participate in collective decisions have been surprisingly difficult to pin down. In this paper, I shall revisit some of the problems discussed in my 2005 paper in light of some recent criticism and discussion of my position in the literature, and address a number of new issues.

Population axiology concerns how to evaluate populations in regard to their goodness, that is, how to order populations by the relations \is better than" and \is as good as". This eld has been riddled with para- doxes and impossibility results which seem to show that our considered beliefs are inconsistent in cases where the number of people and their welfare varies. All of these results have one thing in common, however. They all involve an adequacy condition that rules out Derek Part's Repugnant Conclusion. Moreover, some theorists have argued that we should accept the Repugnant Conclusion and hence that avoidance of this conclusion is not a convincing adequacy condition for a population axiology. As I shall show in this chapter, however, one can replace avoid- ance of the Repugnant Conclusion with a logically weaker and intuitively more convincing condition. The resulting theorem involves, to the best of my knowledge, logically weaker and intuitively more compelling con- ditions than the other theorems presented in the literature. As such, it challenges the very existence of a satisfactory population ethics.

Vem har rätt att delta i vilka beslut? Det torde vara uppenbart att svaret på denna fråga är en viktig del av en teori om demokrati; ty är det något som alla uppfattningar om demokrati har gemensamt så är det en referens till en mängd individer, ett samhälle eller ett »folk» som är, i någon mening, självstyrande. Därför är det överraskande att inte mycket har skrivits om detta problem i de klassiska verken om demokrati. Som Robert Dahl uttrycker det, »hur man ska avgöra vilka som legitimt utgör »folket» … och i kraft av detta har rätt att styra sig själva … är ett problem som nästan totalt har försummats av alla de stora politiska filosoferna som skrivit om demokrati.» (Dahl, 1970, s. 60)

This thesis deals with population axiology, that is, the moral value of states of affairs where the number of people, the quality of their lives, and their identities may vary. Since, arguably, any reasonable moral theory has to take these aspects of possible states of affairs into account when determining the normative status of actions, the study of population axiology is of general import for moral theory. ;There has been a search underway for the last thirty years or so for a theory that can accommodate our intuitions in population axiology. The object of this search has proved surprisingly elusive. The classical moral theories in the literature all have perplexing implications in this area. Classical Utilitarianism, for instance, implies that it could be better to expand a population even if everyone in the resulting population would be much worse off than in the original. ;A number of population axiologies have been proposed in the literature that purport to avoid counter-intuitive implications such as the one mentioned above. The suggestions range from introducing novel ways of aggregating welfare into a measure of value, revising the notion of a life worth living, challenging the way we can compare and measure welfare, to counting people's welfare differently depending on the temporal location or the modal features of their lives. We investigate the concepts and assumptions involved in these theories as well as their implications for population axiology. ;In our discussion, we propose a number of intuitively appealing and logically weak adequacy conditions for an acceptable population axiology. In the last chapter, we consider whether it is possible to find a population axiology that satisfies all of these conditions. We prove that no such axiology exists

A search is under way for a theory that can accommodate our intuitions in population axiology. The object of this search has proved elusive. This is not surprising since, as we shall see, any welfarist axiology that satisfies three reasonable conditions implies at least one of three counter-intuitive conclusions. I shall start by pointing out the failures in three recent attempts to construct an acceptable population axiology. I shall then present an impossibility theorem and conclude with a short discussion of how it might be extended to pluralist axiologies, that is, axiologies that take more values than welfare into account.

Jan Österberg is one of the pioneers in the field of population ethics. He started thinking about this issue already in the late 60s and he has developed one of the most original and interesting population axiologies.1 I’ve discussed the problems and drawbacks of Österberg’s theory elsewhere, and I don’t think that this is the place and time to discuss them again.2 Rather, I shall show that Österberg’s theory has a feature in common with the population axiologies of such luminaries like Plato, Aristotle, Kant, Nietzsche, Wittgenstein and Heidegger, had they developed such a theory: None of these theories simultaneously satisfy five weak adequacy conditions. We shall show this by proving that no population axiology satisfies these five conditions. As a fringe benefit, this theorem also shows that the on-going project of constructing an acceptable population axiology has very gloomy prospects. 3.