Jonas Olson presents a critical survey of moral error theory, the view that there are no moral facts and so all moral claims are false. Part I explores the historical context of the debate; Part II assesses J. L. Mackie's famous arguments; Part III defends error theory against challenges and considers its implications for our moral thinking.

Many naturalistically-minded philosophers want to accomplish a naturalistic reduction of normative (e.g. moral and epistemic) claims. Mindful of avoiding the naturalistic fallacy, such philosophers claim that they are not reducing moral and epistemic concepts or definitions. Rather, they are only reducing the extension of these normative terms, while admitting that the concepts possess a normative content that cannot be naturalistically reduced. But these philosophers run into a serious problem. I will argue that normative claims possess two dimensions of normativity. I (...) will further argue that certain of the reductionist’s commitments require that these two dimensions of normativity be given a naturalistic reduction, while the other of the reductionist’s commitments make such a reduction impossible. Thus, the reductionist’s commitments both require and forbid a reductionist account of morality and epistemology. Thus, as we will see, reductionism is torn between two incompatible requirements, and must fail. (shrink)

The so-called Wrong Kind of Reason (WKR) problem for Scanlon's account of value has been much discussed recently. In a recent issue of Utilitas Gerald Lang provides a highly useful critique of extant proposed solutions to the WKR problem and suggests a novel solution of his own. In this note I offer a critique of Lang's solution and respond to some criticisms Lang directs at a Brentano-style approach suggested by Sven Danielsson and me.

Twentieth century philosophy began with the rejection of naturalism. Many modern philosophers had assumed that their subject was continuous with the sciences, and that facts about human nature and other such information were relevant to the great questions of ethics, logic, and knowledge. Against this, Frege argued that “psychologism” in logic was a mistake. Logic, he said, is an autonomous subject with its own standards of truth and falsity, and those standards have nothing to do with how the mind works (...) or with any other natural facts. Then, in the first important book of twentieth century ethics, Principia Ethica, G. E. Moore also identified naturalism as the fundamental philosophical mistake. Moore argued that equating goodness with any of the natural properties of things is “inconsistent with the possibility of any Ethics whatsoever”. Frege, Moore, and other like-minded thinkers inaugurated a period in which logic and language were the dominant philosophical subjects and confusing conceptual with factual issues was the greatest philosophical sin. During this period, philosophy was thought to be independent of the sciences. This may seem a strange notion, especially where ethics is concerned. One might expect moral philosophers to work in the context of information provided by psychology, which describes the nature of human thinking and motivation; sociology and anthropology, which describe the forms of human social life; history, which traces the development of moral beliefs and practices; and evolutionary biology, which tells us something about the nature and origins of human beings. But all these subjects were counted as irrelevant to the philosophical understanding of morality. (shrink)

North .—What is the trouble about moral facts? When someone denies that there is an objective moral order, or asserts that ethical propositions are pseudo-propositions, cannot I refute him by saying: “You know very well that Brown did wrong in beating his wife. You know very well that you ought to keep promises. You know very well that human affection is good and cruelty bad, that many actions are wrong and some are right”? West .—Isn't the trouble about moral facts (...) another case of trouble about knowing, about learning? We find out facts about the external world by looking and listening; about ourselves, by feeling; about other people, by looking and listening and feeling. When this is noticed, there arises a wish to say that the facts are what is seen, what is heard, what is felt; and, consequently, that moral facts fall into one of these classes. So those who have denied that there are “objective moral characteristics” have not wanted to deny that Brown's action was wrong or that keeping promises is right. (shrink)

Philosophers and psychologists sometimes categorize emotions like surprise and curiosity as specifically epistemic. Is there some reasonably unified and interesting class of emotions here? If so, what unifies it? This paper proposes and defends an evaluative account of epistemic emotions: What it is to be an epistemic emotion is to have fittingness conditions that distinctively involve some epistemic evaluation. We argue that this view has significant advantages over alternative proposals and is a promising way to identify a limited and interesting (...) class of emotions. (shrink)

The transformative power of artificial intelligence (AI) is coming to philosophy—the only question is the degree to which philosophers will harness it. In this paper, we argue that the application of AI tools to philosophy could have an impact on the field comparable to the advent of writing, and that it is likely that philosophical progress will significantly increase as a consequence of AI. The role of philosophers in this story is not merely to use AI but also to help (...) develop it and theorize about it. In fact, we argue that philosophers have a prima facie obligation to spend significant effort in doing so, at least insofar as they should spend effort philosophizing. (shrink)