In this thesis, I will explore the epistemological evolutionary debunking arguments in meta-ethics. I will defend these arguments by accomplishing two tasks: I will offer the best way to understand the EDA and I will also respond to two strongest objections to the EDA. Firstly, in Part I of this thesis, I will offer my account of how the EDA should be best formulated. I will start from how evolution has significantly influenced our moral beliefs. I will then explain why, (...) due to their evolutionary origin, our moral beliefs are not tracking the moral truth reliably. Furthermore, I will argue that the fact that our moral beliefs are not tracking the moral truth also provides an undercutting and a higher-order defeater for those beliefs. As a result, I will conclude that the epistemic status of our moral beliefs is undermined because of these two kinds of defeaters. Secondly, in Part II of this thesis, I will turn my attention to the two strongest objections to the EDA – the Conceptual Truth Objection and the Third Factor Objection. I will first offer two responses to the Conceptual Truth Objection and, based on these two responses, I will argue that the Conceptual Truth Objection fails as a challenge to the EDA. I will then also argue that there currently doesn’t exist an acceptable version of the Third Factor Objection and it is also unlikely that such a version could be constructed in the future. I will finally conclude that both objections are problematic and they are thus unable to give us reason to doubt the EDA. (shrink)

I argue that Spinoza is more of a moral realist than an anti-realist. More specifically, I argue that Spinoza is more of a realist than Kant, and that his view has deep similarities with Plato's metaethics. Along the way, I identify three approaches to the moral realism/anti-realism distinction. Classifying Spinoza as a moral realist brings out a number of important complexities that have been overlooked by many of Spinoza's readers and by many contemporary metaethicists.

This paper develops and defends the view that substantively normative uses of words like “good”, “right” and “ought” are irresolvably indeterminate: any single case of application is like a borderline case for a vague or indeterminate term, in that the meaning-fixing facts, together with the non-linguistic facts, fail to determine a truth-value for the target sentence in context. Normative claims, like vague or indeterminate borderline claims, are not meaningless, though. By making them, the speaker communicates information about the precisifications that (...) s/he accepts. The analogy with vague/indeterminate language, I argue, lays out a new and interesting foundation for a subjectivist approach to normativity. (shrink)

Should the norms of honor cultures be classified as a variety of morality? In this paper, we address this question by considering various empirical bases on which norms can be taxonomically organised. This question is of interest both as an exercise in philosophy of social science, and for its potential implications in meta-ethical debates. Using recent data from anthropology and evolutionary game theory, we argue that the most productive classification emphasizes the strategic role that moral norms play in generating assurance (...) and stabilizing cooperation. Because honor norms have a similar functional role, this account entails honor norms are indeed a variety of moral norm. We also propose an explanation of why honor norms occur in a relatively unified, phenotypically distinctive cluster, thereby explaining why it is tempting to regard them as taxonomically distinct. (shrink)

Moral relativism is an important topic in metaethics. It is also widely discussed outside philosophy (for example, by political and religious leaders), and it is controversial among philosophers and nonphilosophers alike. This is perhaps not surprising in view of recent evidence that people's intuitions about moral relativism vary widely. Though many philosophers are quite critical of moral relativism, there are several contemporary philosophers who defend forms of it. These include such prominent figures as Gilbert Harman, Jesse J. Prinz, J. David (...) Velleman and David B. Wong. The term ‘moral relativism’ is understood in a variety of ways. Most often it is associated with an empirical thesis that there are deep and widespread moral disagreements and a metaethical thesis that the truth or justification of moral judgments is not absolute, but relative to the moral standard of some person or group of persons. Sometimes ‘moral relativism’ is connected with a normative position about how we ought to think about or act towards those with whom we morally disagree, most commonly that we should tolerate them. (shrink)

Although relativism may be said to be one of the oldest doctrines in philosophy, dating back to the teachings of Protagoras in the 5th century B.C., when it comes to contemporary philosophy, there is no consensus on what makes a view qualify as "relativist". The problem is particularly accute in metaethics, since most of the views that up to a decade ago were described as “relativist” would be more accurately described as "contextualist" or even “expressivist” in light of the distinctions (...) currenty drawn in philosophy of language and semantics. In this chapter, we distinguish two construals of relativism, developed in sections 2 and 3 respectively: the “metaphysical” construal, based on the idea that there is no single, absolute, universal morality, and the “semantic” construal, based on the idea that the truth value of moral claims is relative to a set of moral standards, or moral practices, or some other suitable parameter. Section 1 introduces the core relativist ideas in an informal way, and warns against possible misinterpretations. (shrink)

According to the social ontology proposed by John Searle, there are ontologically objective facts or “brute facts”, independent from human attitudes, and ontologically subjective facts. Among the latter, the most notable are institutional facts, such as money or borders, which existence is explained through a collective attribution of status function within a certain social context. Could “moral truths” exist according to an ontology like this? Assuming the truth as correspondence, the notion of “moral truth” remits to the notion of “moral (...) fact”. As we will see, these moral facts, contrary to what authors such as Markus Gabriel suggest, are similar to institutional facts. For this reason, the truth or falsity of moral statements will be, as indicated by authors such as Gilbert Harman, relative to a social context; without that being an obstacle for acknowledging their expressive and directive function. (shrink)

This study aims to expose certain weaknesses in Moore’s moral objectivist argument against moral relativism and subjectivism. It suggests that a moral objectivist argument has to explain moral diversity against moral relativism. Moral relativism is one of the most critical debates in metaethics, and it can be interpreted in two different ways: one as moral realism and the other as moral anti-realism. Moral realism, when reduced to moral objectivism, excludes moral relativism and subjectivism beyond moral realism. I will refer to (...) this interpretation as narrowed moral realism. But moral realism can be extended in an inclusive way such as moral subjectivism and relativism. I will refer to this as extended moral realism. Due to the focus of the study, I will introduce both extended moral realism and narrowed moral realism in the introduction section. Then, I will address G. E. Moore's narrowed moral realism. I will criticize his arguments for their failure to explain the diversity of moral codes. Finally, I suggest that moral subjectivism and moral relativism can be appropriately addressed within extended moral realism. Contrary to Moore's claims, I contend that moral relativism and moral subjectivism would be claims within moral realism. I also evaluate the two main claims from a moral realist perspective. Moral subjectivism claims that moral reality is constructed by an individual’s mental state. Moral relativism argues that social codes of human conduct completely determine moral reality. In the first section of the study, I discussed moral relativism from a Moorean perspective, which asserts that there are self-evident and indefinable truths at the foundation of objective morality. The second section contends that if Moore is correct, however, it necessitates an explanation for why different cultures accept different moral codes. The third section argues the fact that Moore fails to provide any explanation for this. In the conclusion part, I claim that moral relativism and moral subjectivism can be viewed as moral realist theories based on the failure of Moore's arguments. (shrink)