Hallvard Lillehammer

The Cambridge philosopher Frank Ramsey died tragically young, but had already established himself as one of the most brilliant minds of the twentieth century. Besides groundbreaking work in philosophy, particularly in logic, language, and metaphysics, he created modern decision theory and made substantial contributions to mathematics and economics. In these original essays, written to commemorate the centenary of Ramsey's birth, a distinguished international team of contributors offer fresh perspectives on his work and show how relevant it is to present-day concerns.Each of the ten essays addresses fundamental and contentious issues, including success semantics, propositions, infinity, conditionals, conceptual analysis, decision theory, and intergenerational justice. They also shed light on the intellectual context in which Ramsey developed his thought, including his relationship with such leading thinkers as John Maynard Keynes, Bertrand Russell, and Ludwig Wittgenstein. The volume will be indispensable reading for anyone interested in the recent history of philosophy and economics, as well as for practitioners and students of logic, metaphysics, philosophy of mathematics, philosophy of science, philosophy of mind, decision theory, and welfare economics.

In this paper, I do three things. First, I say what I mean by a ‘companions in guilt’ argument in meta-ethics. Second, I distinguish between two kinds of argument within this family, which I call ‘arguments by entailment’ and ‘arguments by analogy’. Third, I explore the prospects for companions in guilt arguments by analogy. During the course of this discussion, I identify a distinctive variety of argument, which I call ‘arguments by absorption’. I argue that this variety of argument inherits some of the weaknesses of standard arguments by analogy and entailment without obviously adding to their strength.

The paper explores the consequences of adopting a moral error theory targeted at the notion of reasonable convergence. I examine the prospects of two ways of combining acceptance of such a theory with continued acceptance of moral judgements in some form. On the first model, moral judgements are accepted as a pragmatically intelligible fiction. On the second model, moral judgements are made relative to a framework of assumptions with no claim to reasonable convergence on their behalf. I argue that the latter model shows greater promise for an error theorist whose commitment to moral thought is initially serious

The paper distinguishes three strategies by means of which empirical discoveries about the nature of morality can be used to undermine moral judgements. On the first strategy, moral judgements are shown to be unjustified in virtue of being shown to rest on ignorance or false belief. On the second strategy, moral judgements are shown to be false by being shown to entail claims inconsistent with the relevant empirical discoveries. On the third strategy, moral judgements are shown to be false in virtue of being shown to be unjustified; truth having been defined epistemologically in terms of justification. By interpreting three recent error theoretical arguments in light of these strategies, the paper evaluates the epistemological and metaphysical relevance of empirical discoveries about morality as a naturally evolved phenomenon.

In this chapter I critically discuss the dismissal of the philosophical significance of facts about human evolution and historical development in the work of W. D Ross. I address Ross’s views about the philosophical significance of the emerging human sciences of his time in two of his main works, namely The Right and the Good and The Foundations of Ethics. I argue that the debate between Ross and his chosen interlocutors (Herbert Spencer, Emile Durkheim and Lucien Levy-Bruhl) shows striking similarities with parallel debates in contemporary moral philosophy.

According to advocates of internalism about reasons for action, there is an interesting connection between an agent’s reasons and the agent’s present desires. On the simplest version of this view, an agent has a reason to act a certain way at some time if and only if acting that way would promote his present desires. Let us call this the sub-Humean model.1 The sub-Humean model is widely regarded as too simple on the grounds that there are adverse conditions, such as massive confusion, in which desires are irrationally possessed or acquired, thereby failing to provide reasons for action.2

Darwin’s treatment of morality in The Descent of Man has generated a wide variety of responses among moral philosophers. Among these is the dismissal of evolution as irrelevant to ethics by Darwin’s contemporary Henry Sidgwick; the last, and arguably the greatest, of the Nineteenth Century British Utilitarians. This paper offers a re-examination of Sidgwick’s response to evolutionary considerations as irrelevant to ethics and the absence of any engagement with Darwin’s work in Sidgwick’s main ethical treatise, The Methods of Ethics . This assessment of Sidgwick’s response to Darwin’s work is shown to have significance for a number of ongoing controversies in contemporary metaethics.

Book synopsis: Assisted reproduction challenges and reinforces traditional understandings of family, kinship and identity. Sperm, egg and embryo donation and surrogacy raise questions about relatedness for parents, children and others involved in creating and raising a child. How socially, morally or psychologically significant is a genetic link between a donor-conceived child and their donor? What should children born through assisted reproduction be told about their origins? Does it matter if a parent is genetically unrelated to their child? How do experiences differ for men and women using collaborative reproduction in heterosexual or same-sex couples, single parent families or co-parenting arrangements? What impact does the wider cultural, socio-legal and regulatory context have? In this multidisciplinary book, an international team of academics and clinicians bring together new empirical research and social science, legal and bioethical perspectives to explore the key issue of relatedness in assisted reproduction.

According to moral error theory, morality is something invented, constructed or made; but mistakenly presents itself to us as if it were an independent object of discovery. According to moral constructivism, morality is something invented, constructed or made. In this paper I argue that constructivism is both compatible with, and in certain cases explanatory of, some of the allegedly mistaken commitments to which arguments for moral skepticism appeal. I focus on two particular allegations that are sometimes associated with moral skepticism. The first is the suspicion that in making moral claims we are merely projecting our attitudes onto the world. The second is the suspicion that in arguing for and against moral views we are merely attempting to influence each other to give similar answers to questions that have no determinate answer.

Intuitions are widely assumed to play an important evidential role in ethical inquiry. In this paper I critically discuss a recently influential claim that the epistemological credentials of ethical intuitions are undermined by their causal pedigree and functional role. I argue that this claim is exaggerated. In the course of doing so I argue that the challenge to ethical intuitions embodied in this claim should be understood not only as a narrowly epistemological challenge, but also as a substantially ethical one. I argue that this fact illuminates the epistemology of ethical intuitions

Indifference is sometimes said to be a virtue. Perhaps more frequently it is said to be a vice. Yet who is indifferent; to what; and in what way is poorly understood, and frequently subject to controversy and confusion. This paper presents a framework for the interpretation and analysis of ethically significant forms of indifference in terms of how subjects of indifference are variously related to their objects in different circumstances; and how an indifferent orientation can be either more or less dynamic, or more or less sensitive to the nature and state of its object. The resulting analysis is located in a wider context of moral psychology and ethical theory; in particular with respect to work on the virtues of care, empathy and other forms of affective engagement. During the course of this discussion, a number of recent claims associated with the ethics of care and empathy are shown to be either misleading or implausible.