To be optimistic, it is standardly assumed, is to have positive expectations. I here argue that this definition is correct but captures only one variety of optimism – here called factual optimism. It leaves out two other important varieties of optimism. The first – focal optimism – corresponds to the idea of seeing the glass half full. The second – axiological optimism – consists in the view that good is stronger than bad. Those three varieties of optimism are irreducible to (...) each other and do not belong to a common kind. I define each of these, characterize their respective correctness conditions, and contrast hope with optimism. (shrink)

En este artículo se explica en qué consisten las éticas centradas en el sufrimiento, presenta algunas de las principales razones a su favor y expone cuáles son sus implicaciones con respecto a la consideración moral de los animales. Se argumenta que conforme a estas éticas los usos como recursos de los animales lesivos para estos deberán ser rechazados. A continuación, se examinan las posiciones que aceptan el uso de los animales siempre que este tenga lugar reduciendo los daños infligidos a (...) estos. Se presentarán una serie de razones por las que tales posiciones resultan cuestionables y por las que van a entrar en conflicto con las implicaciones de las éticas centradas en el sufrimiento. (shrink)

This chapter makes the case for strong longtermism: the claim that, in many situations, impact on the long-run future is the most important feature of our actions. Our case begins with the observation that an astronomical number of people could exist in the aeons to come. Even on conservative estimates, the expected future population is enormous. We then add a moral claim: all the consequences of our actions matter. In particular, the moral importance of what happens does not depend on (...) when it happens. That pushes us toward strong longtermism. We then address a few potential concerns, the first of which is that it is impossible to have any sufficiently predictable influence on the course of the long-run future. We argue that this is not true. Some actions can reasonably be expected to improve humanity’s long-term prospects. These include reducing the risk of human extinction, preventing climate change, guiding the development of artificial intelligence, and investing funds for later use. We end by arguing that these actions are more than just extremely effective ways to do good. Since the benefits of longtermist efforts are large and the personal costs are comparatively small, we are morally required to take up these efforts. (shrink)

This volume collects selected papers delivered at the 15th Conference of the International Society for Utilitarian Studies, which was held at Karlsruhe Institute of Technology in July 2018. It includes papers dealing with the past, present, and future of utilitarianism – the theory that human happiness is the fundamental moral value – as well as on its applications to animal ethics, population ethics, and the future of humanity, among other topics.

The most common argument against negative utilitarianism is the world destruction argument, according to which negative utilitarianism implies that if someone could kill everyone or destroy the world, it would be her duty to do so. Those making the argument often endorse some other form of consequentialism, usually traditional utilitarianism. It has been assumed that negative utilitarianism is less plausible than such other theories partly because of the world destruction argument. So, it is thought, someone who finds theories in the (...) spirit of utilitarianism attractive should not go for negative utilitarianism, but should instead pick traditional utilitarianism or some other similar theory such as prioritarianism. I argue that this is a mistake. The world destruction argument is not a reason to reject negative utilitarianism in favour of these other forms of consequentialism, because there are similar arguments against such theories that are at least as persuasive as the world destruction argument is against negative utilitarianism. (shrink)

The ethical concerns regarding the successful development of an Artificial Intelligence have received a lot of attention lately. The idea is that even if we have good reason to believe that it is very unlikely, the mere possibility of an AI causing extreme human suffering is important enough to warrant serious consideration. Others look at this problem from the opposite perspective, namely that of the AI itself. Here the idea is that even if we have good reason to believe that (...) it is very unlikely, the mere possibility of humanity causing extreme suffering to an AI is important enough to warrant serious consideration. This paper starts from the observation that both concerns rely on problematic philosophical assumptions. Rather than tackling these assumptions directly, it proceeds to present an argument that if one takes these assumptions seriously, then one has a moral obligation to advocate for a ban on the development of a conscious AI. (shrink)

This paper examines causal theories of reference with respect to how plausible an account they give of non-physical natural kind terms such as ‘gene’ as well as of the truth of the associated theoretical claims. I first show that reference fixism for ‘gene’ fails. By this, I mean the claim that the reference of ‘gene’ was stable over longer historical periods, for example, since the classical period of transmission genetics. Second, I show that the theory of partial reference does not (...) do justice to some widely held realist intuitions about classical genetics. This result is at loggerheads with the explicit goals usually associated with partial theories of reference, which is to defend a realist semantics for scientific terms. Thirdly, I show that, contrary to received wisdom and perhaps contrary to physics and chemistry, neither reference fixism nor partial reference are necessary in order to hold on to scientific realism about biology. I pinpoint the reasons for this in the nature of biological kinds, which do not even remotely resemble natural kinds (i.e., Lockean real essences) as traditionally conceived. (shrink)

John Cook Wilson (1849–1915) was Wykeham Professor of Logic at New College, Oxford and the founder of ‘Oxford Realism’, a philosophical movement that flourished at Oxford during the first decades of the 20th century. Although trained as a classicist and a mathematician, his most important contribution was to the theory of knowledge, where he argued that knowledge is factive and not definable in terms of belief, and he criticized ‘hybrid’ and ‘externalist’ accounts. He also argued for direct realism in perception, (...) criticizing both empiricism and idealism, and argued for a moderate nominalist view of universals as being in rebus and only ‘apprehended’ by their particulars. His influence helped swaying Oxford away from idealism and, through figures such as H. A. Prichard, Gilbert Ryle, or J. L. Austin, his ideas were also to some extent at the origin of ‘moral intuitionism’ and ‘ordinary language philosophy’ which defined much of Oxford philosophy until the second half of the twentieth-century. Nevertheless, his name and legacy were all but forgotten for generations after World War II. Still, his views on knowledge are with us today, being in part at work in the writings of philosophers as diverse as John McDowell, Charles Travis, and Timothy Williamson. (shrink)

Intrinsic value has traditionally been thought to lie at the heart of ethics. Philosophers use a number of terms to refer to such value. The intrinsic value of something is said to be the value that that thing has “in itself,” or “for its own sake,” or “as such,” or “in its own right.” Extrinsic value is value that is not intrinsic.

The term “value theory” is used in at least three different ways in philosophy. In its broadest sense, “value theory” is a catch-all label used to encompass all branches of moral philosophy, social and political philosophy, aesthetics, and sometimes feminist philosophy and the philosophy of religion — whatever areas of philosophy are deemed to encompass some “evaluative” aspect. In its narrowest sense, “value theory” is used for a relatively narrow area of normative ethical theory of particular concern to consequentialists. In (...) this narrow sense, “value theory” is roughly synonymous with “axiology”. Axiology can be thought of as primarily concerned with classifying what things are good, and how good they are. For instance, a traditional question of axiology concerns whether the objects of value are subjective psychological states, or objective states of the world. (shrink)

One important test of adequacy for a theory of welfare is completeness. To be complete a theory must cover ill-being as well as well-being. Call this the ill-being test for a theory. The author’s aim in this article is to determine how well equipped the leading theories of welfare are to pass this test. The author reaches three modest conclusions: passing the test is not straightforward for any theory; on the whole, subjective theories do better than objective ones; within the (...) subjective category experiential theories do better than desire theories. (shrink)

The negativity bias is a broad psychological principle according to which the negative is more causally efficacious than the positive. Bad, as it is often put, is stronger than good. The principle is widely accepted and often serves as a constraint in affective science. If true, it has significant implications for everyday life and philosophical inquiry. In this article, I submit the negativity bias to its first dose of philosophical scrutiny and argue that it should be rejected. I conclude by (...) offering some alternative hedonic hypotheses that survive the offered arguments and may prove fruitful. (shrink)

It seems that we should want to avoid becoming intellectually disabled. It is common for philosophers to infer from this that those of us without intellectual disabilities are intrinsically better off than individuals with intellectual disabilities, and that there are consequently stronger moral reasons for others to preserve our lives than to preserve the lives of intellectually disabled individuals. In this article, I argue against this inference from what states we should prefer for ourselves to how much moral reason others (...) have to maintain these states on our behalves. I argue that there is an important sense in which an outcome contributes to our well-being to a certain degree, namely the extent to which others should want it out of care for us, which plays a central role in determining the moral priority of ensuring the outcome for us over ensuring distinct outcomes for others. But an outcome's contribution to our well-being in this sense can come apart from the extent to which we should prefer it for ourselves. (shrink)

The valence of a life – that is, whether it is good, bad or neutral – is an important consideration in population ethics. This paper examines various definitions of valence. The main focus is ‘temporal’ definitions, which define valence in terms of the ‘shape’ of a life’s value over time. The paper argues that temporal definitions are viable only with a restricted domain, and therefore are incompatible with certain substantive theories of well-being. It also briefly considers some popular non-temporal definitions, (...) and raises some problems for these. (shrink)

Este artículo realiza una defensa de las axiologías centradas en el sufrimiento, que sostienen la prioridad de evitar el sufrimiento frente a la promoción de otros valores. Para ello, explica en primer lugar cómo ciertas cuestiones relativas a la creación de individuos sugieren la existencia de una asimetría entre el sufrimiento y la felicidad. Continúa describiendo un conjunto de argumentos a favor de la prioridad del sufrimiento relativos a individuos ya existentes. Asimismo, señala y responde a distintas objeciones que podrían (...) ser dirigidas contra estas axiologías. Finalmente, concluye que las posiciones centradas en el sufrimiento no están todavía lo bastante exploradas y pueden tener un gran potencial. (shrink)

A good life, or a life worth living, is a one that is "better than nothing". At least that is a common thought. But it is puzzling. What does "nothing" mean here? It cannot be a quantifier in the familiar sense, yet nor, it seems, can it be a referring term. To what could it refer? This paper aims to resolve the puzzle by examining a number of analyses of the concept of a life worth living. Temporal analyses, which exploit (...) the temporal structure of lives, are distinguished from non-temporal ones. It is argued that the temporal analyses are better. (shrink)