In this paper, I argue that echo chambers pose a problem for moral progress because of their threat to moral reasoning. I argue for two theses about the epistemology of moral progress: (1) the practical utility thesis: moral reasoning plays an important role in improving moral judgments, and (2) the conflictive social reasoning thesis: the kind of moral reasoning that is important for moral progress involves social reasoning with disputants. Without some conflict, human beings will naturally reason in a biased and otherwise poor manner. Thus, good reasoning must be social so that reasoners who disagree can keep each other in check. These two theses explain why echo chambers are a problem for moral progress. I argue that echo chambers isolate individuals from reasoning with those they disagree with. This is because echo chambers act as a mechanism for discrediting those outside the chamber. If this is true, then the members of an echo chamber will only reason with those who agree with them. The result is that echo chamber members won't reason according to the conflictive social reasoning thesis. Reasoning will only reinforce their existing echoed beliefs rather than improve them.

In this essay, I reply to an influential objection to evolutionary debunking arguments against moral realism. According to this objection, our capacity for autonomous rational reflection allows us to grasp moral truths independently of distorting evolutionary influences, so those influences do not prevent us from having moral knowledge. I argue that rational moral reflection is not, in fact, autonomous from evolutionary influences, since it depends on our evolved, pre-reflective grasp of moral properties. I then consider and reject the suggestion that realists can supply an autonomous foundation for rational moral reflection or do without any such foundation. Next, I address the allegation that my arguments have skeptical implications for rational reflection in non-moral domains. Finally, I conclude with a gesture toward a more promising route for realists who oppose debunking arguments.

I argue that moral principles involve the same sort of generalization as ordinary yet elusive generic generalizations in natural language such as ‘Tigers are striped’ or ‘Peppers are spicy’. A notable advantage of the generic view is that it simultaneously allows for pessimism and optimism about the role and status of moral principles in our lives. It provides a new perspective on the nature of moral principles on which principles are not apt for determining the moral status of particular actions while they may be apt, and even fundamental, to our acquisition of moral knowledge. A natural consequence of the view is variation among moral principles, with some regularly warranting exceptions and some appearing arguably exceptionless. I will also argue that this generic conception of moral principles has significant advantages, as a normative model of moral reasoning, over the view of moral principles as defaults advanced in recent years.

Metaethical Mooreanism is the view that without being able to explain how we know certain moral claims we can nevertheless be sure that we do know them. In this article I focus on the Moorean argument against moral error theory. I conclude that it fails. To show this failure, I first distinguish Moorean claims from Moorean arguments, and then so-called presumptive support from dialogical support. With these distinctions in place, I argue that the key Moorean claim requires dialogical support in order to be used within the Moorean argument against moral error theory, but metaethical Mooreans have provided only presumptive support for the Moorean claim. Not only is this presumptive support inadequate for fending off the moral error theory, it is doubtful that Mooreans can actually provide dialogical support for the key Moorean claim.

I defend a version of what Sharon Street called “Humean constructivism.” I'll first sketch out why I think that contextual constructivism provides us with a more plausible understanding of the ontological status of values than both Kantian constructivism and moral realism. In addition to its recognition of the role of evolutionary pressures in the emergence of human morality, contextual constructivism must now clarify the role of historical intersubjectivity in the subsequent development of morality. I will then claim that adding a coherentist module to Humean constructivism provides a satisfactory answer to those who fear that contextual metaethical theories can only be non-cognitivist. Finally, I will sketch out why I think that the notion of a mind-independent “space of moral reasons” is largely compatible with Humean constructivism.

A debunking argument contends that some target moral judgments were produced by unreliable processes and concludes that such judgments are unjustified. Debunking arguments face a regress challenge: to show that a process is unreliable at tracking the moral truth, we need to rely on other moral judgments. But we must show that these relied-upon judgments are also reliable, which requires yet a further set of judgments, whose reliability needs to be confirmed too, and so on. Some argue that the debunker faces an insurmountable regress, which disables the debunking conclusion. In this paper, I explore and defuse this regress challenge.

Philosophers think that there is something fishy about moral deference. The most common explanation of this fishiness is that moral deference doesn’t yield the epistemic states necessary for certain moral achievements (e.g., acting with moral worth or being virtuous). First, I argue that this explanation overgeneralizes. It entails that using many intuitively kosher belief-formation methods (e.g., abduction, reductio ad absurdum, and intuition) should be off-putting. Second, I argue that moral deference is sometimes superior to these other methods because it puts one in a better position to gain the relevant moral achievements.

Non-naturalist normative realists face an epistemological objection: They must explain how their preferred route of justification ensures a non-accidental connection between justified moral beliefs and the normative truths. One strategy for meeting this challenge begins by pointing out that we are semantically or conceptually competent in our use of the normative terms, and then argues that this competence guarantees the non-accidental truth of some of our first-order normative beliefs. In this paper, I argue against this strategy by illustrating that this competence based strategy undermines the non-naturalist's ability to capture the robustly normative content of our moral beliefs.

My aim in this paper is to argue against what I call “epistemic” pessimism about moral testimony. Epistemic pessimists argue that moral testimony fails to transmit epistemic warrant as non-moral testimony does. I reject epistemic pessimism by defending the No Difference Thesis, that there is no in principle difference between the transmission of epistemic warrant by moral and non-moral testimony. The main thrust of my argument is that there is a good prima facie case to be made for the thesis, namely, that it is supported by all of the major current epistemological views of testimonial warrant, both reductionist and non-reductionist. After making this case, I consider five pessimist attempts to undermine the No Difference Thesis, and argue that none of these attempts succeeds. So, in the absence of any other compelling criticisms, we are justified in rejecting epistemic pessimism and accepting the No Difference Thesis.

In this essay, I argue against the bright-line distinction between ideal andnonideal normative political theory, a distinction used to distinguish“stages” of theorizing such that ideal politicalprinciples can be deduced and examined before compromises with the flawedpolitical world are made. The distinction took on its familiar form in Rawls andhas enjoyed a resurgence of interest in the past few years. I argue that theidea of a categorical distinction — the kind that could allow for asequencing of stages of theorizing — is misconceived, because wholly“ideal” normative political theory is a conceptualmistake, the equivalent of taking the simplifying models of introductory physics(“frictionless movement in a vacuum”) and trying todevelop an ideal theory of aerodynamics. Political organization and justice areabout moral friction in the first instance. I examine both logical andepistemological arguments for the position that we need the uniquely idealizingassumptions of ideal theory in order to arrive at, or to know, a genuine theoryof justice or political morality; and I find them wanting. Such assumptions asfull compliance, consensus, and the publicity principle of universal knowledgeabout consensus can sometimes be useful, if used carefully and withjustification; but they are not categorically different from other idealizingand abstracting assumptions in generating normative theory. What is referred toas “nonideal” theory is all that there is, and it is manykinds of theory, not one — the many ways in which we learn aboutjustice and injustice, and seek to answer questions of practical reason aboutwhat ought to be done in our political world.