International scientific collaboration has increased both in volume and importance. In this article, the authors study the interpretation of macro-level data on international co authorship collaboration. They address such questions as how one might explain country- to-country differences in the rates of international coauthorship, networks of interna tional scientific collaboration among countries, and patterns of international collaboration in scientific fields. Attention is drawn to cognitive, social, historical, geopolitical, and economic factors as potential determinants of the observed patterns. They present a (...) methodology that gives one a measure, independent of size, of countries'propensities to collaborate internationally. (shrink)

The Retreat of Reason brings back to philosophy the ambition of offering a broad vision of the human condition. One of the main original aims of philosophy was to give people guidance about how to live their lives. Ingmar Persson resumes this practical project, which has been largely neglected in contemporary philosophy, but his conclusions are very different from those of the ancient Greeks. They typically argued that a life led in accordance with reason, a rational life, would also (...) be the happiest or most fulfilling. By exploring the irrationality of our attitudes to time, identity, and responsibility, Persson shows that the aim of living rationally conflicts not only with the aim of leading the most fulfilling life, but also with the moral aim of promoting the maximization and just distribution of fulfilment for all. The Retreat of Reason challenges some of our most fundamental ideas about ourselves. (shrink)

This essay discusses the ways in which `Mode 1' and `Mode 2' interact, by reviewing the development of research funding in Sweden during the twentieth century. It argues that `Mode 2' has been the traditional mode of practice. `Mode 1' is a post-war phenomenon, but it is presently the dominant layer of Swedish publicly-funded science and science policy. This essay argues that we are seeing not an increase in uncertainty, but rather a decreasing tolerance of uncertainty.

In this paper I present an account of a distinctive form of ‘practical’ or ‘deliberative’ uncertainty that has been central in debates in both ethics and metaethics. Many writers have assumed that such uncertainty concerns a special normative question, such as what we ought to do ‘all things considered.’ I argue against this assumption and instead endorse an alternative view of such uncertainty, which combines elements of both metaethical cognitivism and non-cognitivism. A notable consequence of this view is that even (...) if there are objective and irreducible truths about how we ought to act, all things considered, the ‘central deliberative question,’ as it’s sometimes called, doesn’t concern such truths. Instead, that question doesn’t have a true answer. (shrink)

ABSTRACT Suppose that, for every possible event and person who would exist whether or not the event were to occur, there is a well-being level that the person would occupy if the event were to occur, and a well-being level that the person would occupy if the event were not to occur. Do facts about such connections between events and well-being levels always suffice to determine whether an event would harm or benefit a person? Many seemingly attractive accounts of harm (...) and benefit entail an affirmative answer to this question, including the widely held Counterfactual Comparative Account (CCA). In this paper, however, we argue that all such accounts will be unsuccessful. (shrink)

The epistemological debate about radical skepticism has focused on whether our beliefs in apparently obvious claims, such as the claim that we have hands, amount to knowledge. Arguably, however, our concept of knowledge is only one of many knowledge-like concepts that there are. If this is correct, it follows that even if our beliefs satisfy our concept of knowledge, there are many other relevantly similar concepts that they fail to satisfy. And this might give us pause. After all, we might (...) wonder: What is so great about the concept of knowledge that we happen to have? Might it be more important, epistemically speaking, to investigate whether our beliefs satisfy some other relevantly similar concept instead? And how should questions such as these even be understood? This paper discusses the epistemological significance of these issues. In particular, a novel skeptical stance called ‘meta-skepticism’ is introduced, which is a kind of skepticism about the idea that some knowledge-like concepts are epistemically more important than others. It suggested that it is unclear whether this form of skepticism can be avoided. (shrink)

This paper argues that, unlike the production-based emissions accounting (on which emissions are attributed to producers of goods and services), the consumption-based emissions accounting (on which emissions are attributed to consumers of these goods and services) can solve the problem of historical emissions. This problem concerns the question of how to assign remedial responsibility for emissions that were made by people who are now dead. Since historical emissions are embedded in the goods consumed by present consumers, and since present consumers (...) can (unlike past producers) do something about their emissions, a consumption-based accounting can contribute to solving the climate crisis. (shrink)

Another look is taken at the model assumptions involved in William Dembski’s (2002a, No Free Lunch: Why Specified Complexity Cannot be Purchased without Intelligence. Roman & Littlefield, Lanham, MA) use of the NFL theorems from optimization theory to disprove the Darwinian theory of evolution by natural selection, and his argument is shown to be irrelevant to evolutionary biology.

In everyday life, as members of larger or smaller groups, we hold each other accountable with respect to social norms. For this practice to be intelligible, we must arguably by and large be justified in demanding that other group members comply with these norms. Other things being equal, it seems that we have a group membership-based pro tanto reason to comply with the social norms of our group. In this chapter, I examine how such demands and reasons for compliance can (...) be explained and made intelligible. I do this by first presenting and discussing Raimo Tuomela’s individualistic account of social norms from The Importance of Us (1995). I argue that this and similar individualistic accounts fail to make sense of how our practice of holding each other accountable with respect to social norms can be justified. This provides a reason to try some holistic medicine. I therefore discuss Tuomela’s later irreducibly collectivistic “we-mode” account of social norms from The Philosophy of Sociality (2007). This account promises to make sense of social-norm accountability, but it also carries with it some philosophical baggage. (shrink)

abstract As history shows, some human beings are capable of acting very immorally. 1 Technological advance and consequent exponential growth in cognitive power means that even rare evil individuals can act with catastrophic effect. The advance of science makes biological, nuclear and other weapons of mass destruction easier and easier to fabricate and, thus, increases the probability that they will come into the hands of small terrorist groups and deranged individuals. Cognitive enhancement by means of drugs, implants and biological (including (...) genetic) interventions could thus accelerate the advance of science, or its application, and so increase the risk of the development or misuse of weapons of mass destruction. We argue that this is a reason which speaks against the desirability of cognitive enhancement, and the consequent speedier growth of knowledge, if it is not accompanied by an extensive moral enhancement of humankind. We review the possibilities for moral enhancement by biomedical and genetic means and conclude that, though it should be possible in principle, it is in practice probably distant. There is thus a reason not to support cognitive enhancement in the foreseeable future. However, we grant that there are also reasons in its favour, but we do not attempt to settle the balance between these reasons for and against. Rather, we conclude that if research into cognitive enhancement continues, as it is likely to, it must be accompanied by research into moral enhancement. (shrink)

Moral disagreement is sometimes thought to pose problems for moral realism because it shows that we cannot achieve knowledge of the moral facts the realists posit. In particular, it is "fundamental" moral disagreement—that is, disagreement that is not due to distorting factors such as ignorance of relevant nonmoral facts, bad reasoning skills, or the like—that is supposed to generate skeptical implications. In this paper, we show that this version of the disagreement challenge is flawed as it stands. The reason is (...) that the epistemic assumptions it requires are incompatible with the possibility of fundamental disagreement. However, we also present an alternative reconstruction of the challenge that avoids the problem. The challenge we present crucially invokes the principle that knowledge requires "adherence". While that requirement is usually not discussed in this context, we argue that it provides a promising explanation of why disagreement sometimes leads to skepticism. (shrink)

In May 2000 a group of researchers, university teachers and publishers met to consider the impact of the new media for knowledge transmission on the intellectual world and listed the projects ongoing in France for publishing content electronically. Eighteen months later no one is able to say whether there will one day be a significant body of electronic publishing with French content. Such a transformation calls for a moment's consideration. So what has happened?

We show that the common claim that internal validity should be understood as prior to external validity has, at least, three epistemologically problematic aspects: experimental artefacts, the implications of causal relations, and how the mechanism is measured. Each aspect demonstrates how important external validity is for the internal validity of the experimental result.

There is a fixed limit on the greenhouse gas emissions that the atmosphere can absorb before triggering dangerous climate changes. One of the debates in climate ethics concerns how the available emissions should be divided between people. One popular answer, sometimes called “Emissions Egalitarianism” (EE), proposes a distribution of emissions permits that gives everyone an equal per capita share of the atmospheric absorptive capacity. However, several debaters have objected to EE. First, it has been argued that there is no principled (...) reason to accept EE, since it cannot be justified on the basis of any moral theory. Second, it has been argued that there is neither any pragmatic reason to accept EE, since it is impracticable, politically unfeasible, and fails to reach its goal. This paper defends EE against these objections. First, it shows that EE can be justified on libertarian, utilitarian, and fairness grounds, respectively. Second, it shows that EE is neither more impracticable, nor more politically unfeasible, than its rivals. It also argues that EE does not fail to reach its goal. Consequently, there is a case to be made for EE. (shrink)

In this article I argue against Schroeder's account of the weight of normative reasons. It is shown that in certain cases an agent may have reasons she cannot know about without them ceasing to be reasons, and also reasons she cannot know about at all. Both possibilities are troubling for Schroeder's view.

Most reductionist accounts of intentional joint action include a condition that it must be common knowledge between participants that they have certain intentions and beliefs that cause and coordinate the joint action. However, this condition has typically simply been taken for granted rather than argued for. The condition is not necessary for ensuring that participants are jointly responsible for the action in which each participates, nor for ensuring that each treats the others as partners rather than as social tools. It (...) is thus something of a mystery why the condition is so widely accepted. By rejecting three arguments that could potentially support it, I argue that reductionists should get rid of the condition. I show that two of the arguments fail. While the third argument is intuitively compelling, it builds on key premises that are unavailable to the reductionist. (shrink)

According to a widely accepted constraint on the content of intentions, here called the exclusivity constraint, one cannot intend to perform another agent’s action, even if one might be able to intend that she performs it. For example, while one can intend that one’s guest leaves before midnight, one cannot intend to perform her act of leaving. However, Deborah Tollefsen’s (2005) account of joint activity requires participants to have intentions-in-action (in John Searle’s (1983) sense) that violate this constraint. I argue (...) that the exclusivity constraint should not be accepted as an unconditional constraint on the contents of intentions-in-action: one may intend to perform a basic action that belongs both to oneself and to another agent. Based on the phenomenology of tool use, I first argue that intentions-in-action of one’s basic actions may be technologically extended, meaning that their contents are not restricted to concern the agent’s bodily movements. In analogy with this, I then argue that the phenomenology of some skillful joint activities supports the idea that one’s basic intentions-in-action may be socially extended, in violation of the widely accepted exclusivity constraint. Tollefsen’s account is specifically constructed to account for the joint activities of infants and toddlers who lack the capacity to think of others as planning agents and grasp their plan-like intentions (a capacity required by Michael Bratman’s (1992, 1993, 2009a, b) influential account of joint activity). At the end of the paper, I raise some doubts regarding the extent to which infants and toddlers have socially extended intentions-in-action. (shrink)

In 'Joint Action and Development', Stephen Butterfill argues that if several agents' actions are driven by what he calls a "shared goal"—a certain pattern of goal-relations and expectations—then these actions constitute a joint action. This kind of joint action is sufficiently cognitively undemanding for children to engage in, and therefore has the potential to play a part in fostering their understanding of other minds. Part of the functional role of shared goals is to enable agents to choose means that are (...) appropriate to realising a goal with others rather than individually. By offering a counterexample, I show that the pattern of goal-relations and expectations specified by Butterfill cannot play this role. I then provide an appropriately conceptually and cognitively undemanding amendment with which the account can be saved. (shrink)

Aan de hand van oude en hedendaagse filosofen proberen de auteurs inzicht te geven in het begrip democratie. Wat is een democratie en wat betekent leven in een democratie?

A long-standing family of worries about moral realism focuses on its implications for moral epistemology. The underlying concern is that if moral truths have the nature that realists believe, it is hard to see how we could know what they are. This objection may be called the “argument from skepticism” against moral realism. Realists have primarily responded to this argument by presenting accounts of how we could acquire knowledge of moral truths that are consistent with realist assumptions about their nature. (...) Less time has been spent, however, on the question of why it would be a problem for moral realism if it leads to skepticism in the first place, and on the related question of which skeptical conclusions it would be problematic for realists to simply accept. This paper considers several answers to these questions, thereby distinguishing a number of versions of the argument from skepticism, and discusses their prospects. (shrink)

It’s commonly held that particular moral facts are explained by ‘natural’ or ‘descriptive’ facts, though there’s disagreement over how such explanations work. We defend the view that general moral principles also play a role in explaining particular moral facts. More specifically, we argue that this view best makes sense of some intuitive data points, including the supervenience of the moral upon the natural. We consider two alternative accounts of the nature and structure of moral principles—’the nomic view’ and ‘moral platonism’—before (...) considering in what sense such principles obtain of necessity. (shrink)

I argue that an agent can be morally responsible and fully (but not necessarily solely) blameworthy for another agent’s free intentional action, simply by intentionally creating the conditions for the action in a way that causes it. This means, I argue, that she can be morally responsible for the other’s action in the relevantly same way that she is responsible for her own non-basic actions. Furthermore, it means that socially mediated moral responsibility for intentional action does not require an agent (...) to authorize another to act on her behalf, nor does it require her to threaten, coerce, or deceive the other. (shrink)

In ordinary discourse, a single duty is often attributed to a plurality of agents. In "Group Duties: Their Existence and Their Implications for Individuals", Stephanie Collins claims that such attributions involve a “category error”. I critically discuss Collins’ argument for this claim and argue that there is a substantive sense in which non-agential groups can have moral duties. A plurality of agents can have a single duty to bring about an outcome by virtue of a capacity of each to practically (...) reason about what they ought to do together. I also argue that Collins’ attempt to give a reductive account of such “we-reasoning” fails. (shrink)

What is required for several agents to intentionally φ together? I argue that each of them must believe or assume that their φ-ing is a single end that each intends to contribute to. Various analogies between intentional singular action and intentional joint action show that this doxastic single end condition captures a feature at the very heart of the phenomenon of intentional joint action. For instance, just as several simple actions are only unified into a complex intentional singular activity if (...) the agent believes or assumes that there is a single end that each action is directed to, so several agents’ actions are only unified into an intentional joint activity if each agent believes or assumes that there is a single end that each intends to contribute to. Influential accounts of intentional joint action, including Christopher Kutz’s and Michael Bratman’s, implicitly include this condition only if participants must intend to contribute to the end under the same conception. While such a requirement successfully rules out some counterexamples, it also makes the accounts unable to appropriately accommodate and explain clear cases of intentional joint action that they ought to be able to accommodate and explain. (shrink)

One of my main points in this study is that the knowledge of orthodox medical theory is an incomplete guide for practical action when relating to our patients' specifically human problems. By following a holistic perspective on patients' health and on our medical enterprise we will be more efficient as doctors. This standpoint is illuminated by means of two case reports. Instead of focusing on symptoms as such and letting them refer to orthodox medical theory, I explicitly relate to the (...) patients as if they are conveying a personal meaning by means of experienced symptoms. The experience of illness could be a successful strategy on the existential level although destructive on the technical biological level. A holistic theory of health can give doctors a good conceptual base when relating to people whose presented illnesses are to be regarded explicitly as their way of making themselves understood. The doctor's understanding of the patient's illness, of the theory of health, and of how health is regained, is dependent on the doctor's having the courage to reduce the distance to the patient, the courage to participate and be changed. (shrink)

This is a reply to Jesse Prinz and Paul Bloom’s skepticism about the moral importance of empathy. It concedes that empathy is spontaneously biased to individuals who are spatio-temporally close, as well as discriminatory in other ways, and incapable of accommodating large numbers of individuals. But it is argued that we could partly correct these shortcomings of empathy by a guidance of reason because empathy for others consists in imagining what they feel, and, importantly, such acts of imagination can be (...) voluntary – and, thus, under the influence of reflection – as well as automatic. Since empathizing with others motivates concern for their welfare, a reflectively justified empathy will lead to a likewise justified altruistic concern. In addition, we argue that such concern supports another central moral attitude, namely a sense of justice or fairness. (shrink)

It has been argued that the most impactful choice an individual could make, with respect to mitigating greenhouse gas emissions, is to have fewer children. This paper brings up a related aspect of individuals’ reproductive choices that has been neglected in the climate ethics literature: the timing aspect. It is argued that, from a climate change perspective, it does not matter only how many children people bring into existence, but also when they are brought into existence. The reason is that (...) the age at which parents choose to procreate affects the number of people that will live simultaneously on the planet, which is in turn relevant for climate change. This provides individuals another means by which they can decrease their emissions. (shrink)

This thesis addresses a range of questions about normativity, broadly understood. Recurring themes include the idea of normative ‘action-guidance’, and the connection between normativity and motivational states, the possibility of normative knowledge and its role in deliberation, and the question of whether normative concepts can themselves be evaluated. The first two papers, ‘The Entanglement Problem and Idealization in Moral Philosophy’ and ‘Weighting Surprise Parties: Some Problems for Schroeder’, critically examine various versions of the view that what we ought to do (...) depends on some motivational states, such as desires. It is suggested that such views are, for different but interrelated reasons, extensionally inadequate. The third paper, ‘From Evolutionary Theory to Moral Skepticism, via Disagreement’, proposes that two arguments for moral skepticism can be combined in a mutually supportive way. A central role is played by the principle that a subject S knows that p only if S adherently believes that p, where this roughly means that S could not easily have failed to believe that p unless her epistemic position were worse or p were false. It is suggested that evolutionary considerations and facts about moral disagreement together indicate that moral beliefs violate this principle. The fourth paper, ‘Ethics and the Question of What to Do’, offers an account of the so- called ‘central deliberative question’ that is highlighted by several kinds of choice situations, including those that involve normative uncertainty and normative conflicts. It is proposed that this question is not best understood as the question of what one ought to do, not even in an ‘all things considered’ sense, but as the question of what to do. A meta-normative view that involves elements of both cognitivism and non-cognitivism is put forward as the best explanation of this fact. The fifth paper, ‘Meta-Skepticism’, develops a novel skeptical challenge to beliefs about the external world, the central idea being that even if beliefs about the external world can constitute knowledge, there are various other knowledge-like concepts that they cannot satisfy even if they are true. This raises the question of whether some of these concepts are epistemically more important than the others, and, in particular, the further question of how the relevant notion of ‘epistemic importance’ should be understood. Several answers to this question are considered and found wanting. (shrink)

According to the standard story given by reductive versions of the Causal Theory of Action, an action is an intrinsically mindless bodily movement that is appropriately caused by an intention. Those who embrace this story typically take this intention to have a coarse-grained content, specifying the action only down to the level of the agent's habits and skills. Markos Valaris argues that, because of this, the standard story cannot make sense of the deep reach of our non-observational knowledge of action. (...) He concludes that we therefore have to jettison its conception of actions as mindless bodily movements animated from the outside by intentions. Here we defend the standard story. We can make sense of the reach of non-observational knowledge of action once we reject the following two assumptions: (i) that an intended habitual or skilled action is a so-called basic action—that is, an action that doesn't involve any finer-grained intentions—and (ii) that an agent, in acting, is merely executing one intention rather than a whole hierarchy of more or less fine-grained intentions. We argue that (i) and (ii) are false. (shrink)

Fred Feldman has argued that consequentialists can answer the well-known by replacing the utilitarian axiology with one that makes the value of receiving pleasures and pains depend on how deserved it is. It is shown that this proposal is open to three interpretations: the Fit-idea, which operates with the degree of fit between what recipients get and what they deserve; the Merit-idea, which operates with the magnitude of the recipients' desert or merit; and the Fit-Merit idea which is a combination (...) of and. It is argued that none of these ideas will do, among other things because they fail to take into account the fact that justice involves inter-personal comparisons. (shrink)

Semmelweis’s work predates the discovery of the power of randomization in medicine by almost a century. Although Semmelweis would not have consciously used a randomized controlled trial (RCT), some features of his material—the allocation of patients to the first and second clinics—did involve what was in fact a randomization, though this was not realised at the time. This article begins by explaining why Semmelweis’s methodology, nevertheless, did not amount to the use of a RCT. It then shows why it is (...) descriptively and normatively interesting to compare what he did with the modern approach using RCTs. The argumentation centres on causal inferences and the contrast between Semmelweis’s causal concept and that deployed by many advocates of RCTs. It is argued that Semmelweis’s approach has implications for matters of explanation and medical practice. (shrink)

What is the moral significance of the contrast between acting together and strategic interaction? We argue that while collective moral responsibility is not uniquely tied to the former, the degree to which the participants in a shared intentional wrongdoing are blameworthy is normally higher than when agents bring about the same wrong as a result of strategic interaction. One argument for this claim focuses on the fact that shared intentions cause intended outcomes in a more robust manner than the intentions (...) involved in strategic interaction. We argue, however, that this in itself is not significant. The significant difference is rather volitional: The parties to a shared intention are mutually implicated in each other’s will in a distinct way. Since degree of blameworthiness depends on the quality of will an agent displays in her actions, this explains the higher degree of collective blameworthiness associated with shared intentional wrongdoing. (shrink)

One of the principles on how to act under moral uncertainty, My Favourite Theory, says roughly that a morally conscientious agent chooses an option that is permitted by the most credible moral theory. In defence of this principle, we argue that it prescribes consistent choices over time, without relying on intertheoretic comparisons of value, while its main rivals are either plagued by moral analogues of money pumps or in need of a method for making non-arbitrary intertheoretic comparisons. We rebut the (...) arguments that have been levelled against My Favourite Theory and offer some arguments against intertheoretic comparisons of value. (shrink)

Much has been written about climate change from an ethical view in general, but less has been written about it from a libertarian point of view in particular. In this paper, I apply the libertarian moral theory to the problem of climate change. I focus on libertarianism’s implications for our individual emissions. I argue that even if our individual emissions cause no harm to others, these emissions cross other people’s boundaries, although the boundary-crossings that are due to our ‘subsistence emissions’ (...) are implicitly consented to by others, there is no such consent to our ‘non-subsistence emissions’, and there is no independent justification for these emissions. Although offsetting would provide such a justification, most emitters do not offset their non-subsistence emissions. Therefore, these emissions violate people’s rights, which means that they are impermissible according to libertarianism’s non-aggression principle. (shrink)

In climate ethics, there is a debate about how the carbon budget, in terms of emissions permits, should be divided between people. One popular proposal, sometimes called The Equal per Capita View, says that everyone should have an equal share of the available emissions permits. Several authors have objected to this view, arguing that: (i) the equal per capita view implies isolationism since it treats emissions permits in isolation from other considerations of justice such as development, poverty and trade; and (...) (ii) isolationism is implausible since it yields a number of problematic implications; therefore (iii) the equal per capita view is implausible. I examine this argument against the equal per capita view by scrutinizing the presumed problematic implications of isolationism. I show that they are either mistakenly inferred from isolationism or irrelevant as to whether isolationism is plausible or not. I conclude that the equal per capita view should not be discarded for being an isolationist approach. Rather, both isolationism and the equal per capita view should be considered as potential action guides. This result is of relevance to the climate political debate, since it could promote progress in the climate negotiations that are needed for limiting global warming to 1.5 degrees Celsius, as set by the Paris Agreement. (shrink)

In the preface to the second edition of his deservedly popular Practical Ethics, Peter Singer notes that one of the ‘two significant changes” of his ‘underlying ethical views” consists in dropping the tentative suggestion that ‘one might try to combine both the “total” and the “prior existence” versions of utilitarianism, applying the former to sentient beings who are not self-conscious and the latter to those who are”. On the total view our aim is ‘to increase the total amount of pleasure (...) ” regardless of ‘whether this is done by increasing the pleasure of existing beings, or increasing the number of beings who exist”, whereas on the prior existence view we ‘count only beings who already exist, prior to the decision we are taking, or at least will exist independently of that decision”. Instead he proposes ‘that preference utilitarianism draws a sufficiently sharp distinction between these two categories of being to enable us to apply one version of utilitarianism to all sentient beings”. (shrink)

In a number of works of art, I have taken an interest in insects, bookworms that eat books, electronics as anatomy and clever robots whose actions in a way resemble the apparently primitive abilities of insects. This text has its starting point in two works of art, Eaten Books and Atlas of AInsects. In the artworks, I am interested in insect anatomy and insects as symbols of decay, survival, extinction, death and post humanity. The text is originally from an artistic (...) lecture about my work with insects and coding, and is based on a reading from within the computer program Eaten Books. A performance where the software is letting insects erase the text. (shrink)

In this paper, we present and defend an analysis of harm that we call the Negative Influence on Well-Being Account (NIWA). We argue that NIWA has a number of significant advantages compared to its two main rivals, the Counterfactual Comparative Account (CCA) and the Causal Account (CA), and that it also helps explain why those views go wrong. In addition, we defend NIWA against a class of likely objections, and consider its implications for several questions about harm and its role (...) in normative theorizing. (shrink)

According to many popular views in normative ethics, meta-ethics and axiology, facts about what we ought to do or what is good for us depend on facts about the attitudes that some agent would have in some relevant idealized circumstances. This paper presents an unrecognized structural problem for such views which threatens to be devastating.

David Boonin argues that in a choice between creating a person whose life would be well worth living and creating a different person whose life would be significantly worse, but still worth living, each option is morally permissible. I show that Boonin's argument for this view problematically implies that in a choice between creating a person whose life would be well worth living and creating another person whose life would not be worth living, each option is also morally permissible.