In this paper I defend what I call the argument from epistemic reasons against the moral error theory. I argue that the moral error theory entails that there are no epistemic reasons for belief and that this is bad news for the moral error theory since, if there are no epistemic reasons for belief, no one knows anything. If no one knows anything, then no one knows that there is thought when they are thinking, and no one knows that they (...) do not know everything. And it could not be the case that we do not know that there is thought when we believe that there is thought and that we do not know that we do not know everything. I address several objections to the claim that the moral error theory entails that there are no epistemic reasons for belief. It might seem that arguing against the error theory on the grounds that it entails that no one knows anything is just providing a Moorean argument against the moral error theory. I show that even if my argument against the error theory is indeed a Moorean one, it avoids Streumer's, McPherson's and Olson's objections to previous Moorean arguments against the error theory and is a more powerful argument against the error theory than Moore's argument against external world skepticism is against external world skepticism. (shrink)

There are important similarities between moral thought and talk and thought and talk about gender: disagreements about gender, like disagreements about morality, seem to be intractable and to outstrip descriptive agreement; and it seems coherent to reject any definition of what it is to be a woman in terms of particular social, biological, or other descriptive features, just as it seems coherent to reject any definition of what it is to be good or right in terms of any set of (...) descriptive properties. These similarities give us reason to investigate the idea that, like moral thought and talk, gender thought and talk is inherently normative. This paper proposes a normative account of gender thought and talk in terms of fitting treatment. On this fitting treatment account, to judge that A is gender G is just to judge that it is fitting to treat A as a G. This account is a descriptive or hermeneutical account of our gender thought and talk rather than an ameliorative account of our gender concepts or a metaphysical account of gender properties in social metaphysics. This paper argues that other descriptive accounts of gender thought and talk face problems that the fitting treatment account overcomes. (shrink)

The ability to engage in reflexive thought—in thought about thought or about other mental states more generally—is regarded as a complex intellectual achievement that is beyond the capacities of most nonhuman animals. To the extent that reflexive thought capacities are believed necessary for the possession of many other psychological states or capacities, including consciousness, belief, emotion, and empathy, the inability of animals to engage in reflexive thought calls into question their other psychological abilities. This chapter attacks the idea that reflexive (...) thought is required in this pervasive way and holds that supposing that it is derives from a tendency among philosophers and scientists toward overcomplication. Against this tendency, it recommends an aponoian framework, from apó, “away from” and noûs, “intelligence” or “thought,” arguing that seemingly complex psychological abilities are often not as complex as they seem, and do not require the ability to engage in reflexive thought. (shrink)

A popular argument is that peer disagreement about controversial moral topics undermines justified moral belief in a way that peer disagreement about non-moral topics does not undermine justified non-moral belief. Call this argument the argument for moral skepticism from peer disagreement. Jason Decker and Daniel Groll have recently made a companions in guilt response to this argument. Decker and Groll argue that if peer disagreement undermines justified moral belief, then peer disagreement undermines much non-moral justified belief; if the argument for (...) moral skepticism from peer disagreement succeeds, then a kind of non-moral skepticism holds too. And we should not hold that the status of such non-moral beliefs are undermined by peer disagreement. In this paper, I shows that Decker and Groll’s companions in guilt argument fails. I then draw out the implications of my argument for the epistemology of disagreement and the epistemology of moral disagreement more generally. For instance, I then argue that peer disagreement about morality does not undermine all justified moral belief but that peer disagreement about morality does preclude most moral beliefs from being justified and constituting knowledge in a way that peer disagreement about non-moral topics does not preclude most non-moral beliefs from being justified and constituting knowledge. (shrink)

Arguing first that the best way to understand what a continuant is is as something that primarily has its properties at a time rather than atemporally, the paper then defends the idea that there are occurrent continuants. These are things that were, are, or will be happening—like the ongoing process of someone reading or my writing this paper, for instance. A recently popular philosophical view of process is as something that is referred to with mass nouns and not count nouns. (...) This has mistakenly encouraged the view that the only way to think of process is as the stuff of events, and has obscured the possibility of thinking of processes as individual continuants. (shrink)

Starting from the assumption that one can literally perceive someone's anger in their face, I argue that this would not be possible if what is perceived is a static facial signature of their anger. There is a product–process distinction in talk of facial expression, and I argue that one can see anger in someone's facial expression only if this is understood to be a process rather than a product.

What someone’s behaviour must be like if we are to be aware of their emotions in it Content Type Journal Article Pages 1-14 DOI 10.1007/s11097-011-9224-0 Authors Rowland Stout, School of Philosophy, UCD Dublin, Dublin 4, Republic of Ireland Journal Phenomenology and the Cognitive Sciences Online ISSN 1572-8676 Print ISSN 1568-7759.

I argue that while every betrayal is a breach of trust, not every breach of trust is a betrayal. I defend a conception of trust as primarily a feature of behaviour (i.e. trusting behaviour) and only secondarily a feature of a mental attitude. So it is possible to have the attitude of distrust towards someone while still trusting them in the way you behave. This makes sense of the possibility of Judas Iscariot breaching Jesus’ trust, and so betraying him, even (...) though Jesus presumably knew that Judas would do just that. This conception of trust may be spelt out in terms of making oneself reliant on somebody in a collaboration with them. Such collaborations include relationships like friendships and love affairs, as well as political activities or defending one’s country against aggression. I argue that only when these collaborations involve a commitment to loyalty is a breach of trust a betrayal. And loyalty is a feature of those collaborations or relationships that exclude others – us/them collaborations. (shrink)

A significant argument for the claim that knowing-wh is knowing-that, implicit in much of the literature, including Stanley and Williamson (2001), is spelt out and challenged. The argument includes the assumption that a subject's state of knowing-wh is constituted by their involvement in a relation with an answer to a question. And it involves the assumption that answers to questions are propositions or facts. One of Lawrence Powers' counterexamples to the conjunction of these two assumptions is developed, responses to it (...) are rebutted, and the possibility of rejecting the second rather than the first of these assumptions is explored briefly. (shrink)

Generosity is not the same thing as kindness or self-sacrifice. Presumptuousness is incompatible with generosity, but not with kindness or self-sacrifice. I consider a kind but interfering neighbour who inappropriately takes over the role of mother to my daughter; her behaviour is not generous. Presumptuousness is the improper exercise of a disposition to adopt a role that one does not have. With this in mind I explore the idea that generosity is the proper exercise of the disposition to adopt a (...) role that one does not have. It is a mean between meanness on the one hand (where that disposition is not exercised when it should be) and presumptuousness on the other hand (where that disposition is exercised when it should not be). Adopting a role is being motivated by the considerations that should motivate someone who actually has that role. The disposition to adopt roles you do not have is important in social situations where there is a need for a role that nobody is filling. It is also the basis of developing relationships like friendship; you have to act as if you are a friend before you become a friend. This model fits the parable of the Good Samaritan in an obvious way. It also explains charity and forgiveness. I suggest that forgiveness is demanded by a certain relationship – call it love. What makes forgiveness optional after someone has wronged you is that love itself may be optional after someone has wronged you. There is nothing generous about forgiving someone you love, though loving them may be generous. Forgiveness only counts as generous when you don’t love the person, and even then it can fail to be generous if it is presumptuous. (shrink)

In this paper, I look at Epictetus' dichotomy of control, how it leads to freedom, and how these topics relate to modern life.

An eternal society with the abilities of ordinary humans in each year of its existence would have had the ability to actualize a logical contradiction. This fact casts doubt on the metaphysical possibility of an infinite past. In addition to using this paradox in an argument against an infinite past, one can also use the paradox mutatis mutandis as a decisive argument against the sempiternality of God.

An influential philosophical conception of our mind’s place in the world is as a site for the states and events that causally mediate the world we perceive and the world we affect. According to this conception, states and events in the world cause mental states and events in us through the process of perception. These mental states and events then go on to produce new states and events in the world through the process of action. Our role is as hosts (...) for these states and events that causally mediate the states and events on the input side and those on the output side. (shrink)

Despite being somewhat long in the tooth at the time, Aristotle, Hume and Kant were still dominating twentieth century moral philosophy. Much of the progress made in that century came from a detailed working through of each of their approaches by the expanding and increasingly professionalized corps of academic philosophers. And this progress can be measured not just by the quality and sophistication of moral philosophy at the end of that century, but also by the narrowing of some of the (...) gaps between Aristotelian, Humean and Kantian philosophers. (shrink)

Arguing against the claim that beliefs are reasons for action.

I argue against the claim that the fundamental form of trust is a 2-place relation of A trusting B and in favour of the fundamental form being a 4-place relation of A, by ψ-ing, trusting B to φ. I characterize trusting behaviour as behaviour that knowingly makes one reliant on someone doing what they are supposed to do in the collaborative enterprise that the trusting behaviour belongs to. I explain how trust is involved in the following collaborative enterprises: knowledge transfer (...) – i.e. telling someone something; maintaining a relationship; and passing responsibility for an action on to someone else. And I finish by showing how our talk of trust in non-collaborative contexts – e.g. trusting a branch to support one’s weight – may be explained by reference to the central sort of collaborative trust. (shrink)

In chapter 14 of Zahavi’s recent book, Self and Other, the notion of shame is discussed. In feeling shame one experiences oneself as experienced by others. For Sartre, that experience in itself is sufficient for shame, as one experiences oneself as determined in the experience of others and hence as shamefully not self-determining. But Zahavi introduces an extra condition for shame, which is a ‘global decrease in self-esteem’. This paper questions the need for this condition and argues that seeing oneself (...) as shameful in the eyes of others needs to be spelt out in a pragmatist way in terms of certain shame-involving practices rather than in a purely phenomenological way. (shrink)

in O’Rourke, F. (ed.), Human Destinies (Notre Dame Press, forthcoming).

Many have been attracted to the idea that for something to be good there just have to be reasons to favour it. This view has come to be known as the buck-passing account of value. According to this account, for pleasure to be good there need to be reasons for us to desire and pursue it. Likewise for liberty and equality to be values there have to be reasons for us to promote and preserve them. Extensive discussion has focussed on (...) some of the problems that the buck-passing account faces, such as the 'wrong kind of reason' problem. Less attention, however, has been paid as to why we should accept the buck-passing account or what the theoretical pay-offs and other implications of accepting it are. The Normative and the Evaluative provides the first comprehensive motivation and defence of the buck-passing account of value. Richard Rowland argues that the buck-passing account explains several important features of the relationship between reasons and value, as well as the relationship between the different varieties of value, in a way that its competitors do not. He shows that alternatives to the buck-passing account are inconsistent with important views in normative ethics, uninformative, and at odds with the way in which we should see practical and epistemic normativity as related. In addition, he extends the buck-passing account to provide an account of moral properties as well as all other normative and deontic properties and concepts, such as fittingness and ought, in terms of reasons. (shrink)

Both professors and institutions of higher education benefit from a vision of academic life that is grounded more firmly in myth than in history. According to the myth created by that traditional vision, scholars pursue research wherever their drive to knowledge takes them, and colleges and universities transmit the fruits of that research to contemporary and future generations as the accumulated wisdom of the ages. Yet the economic and social forces operating on colleges and universities as institutions, as well as (...) on the interests of faculty members within them, are making the myth embodied in the traditional ideal of the academy more and more difficult to sustain. Questions about what an institution of higher education ought to be, about what professors ought to do, and about what relations professors ought to have to the institutions which employ them are being raised and pushed to the fore. These are not theoretical questions, but practical questions of immediate import that must be answered relatively quickly -- and wisely -- if institutions of higher education and professors are not to find themselves inextricably in the grip of forces they cannot change. The myth of disinterested academic research-however beautiful -- and however beneficial -- is under siege. (shrink)

Two controversies exist regarding the appropriate characterization of hierarchical and adaptive evolution in natural populations. In biology, there is the Wright-Fisher controversy over the relative roles of random genetic drift, natural selection, population structure, and interdemic selection in adaptive evolution begun by Sewall Wright and Ronald Aylmer Fisher. There is also the Units of Selection debate, spanning both the biological and the philosophical literature and including the impassioned group-selection debate. Why do these two discourses exist separately, and interact relatively little? (...) We postulate that the reason for this schism can be found in the differing focus of each controversy, a deep difference itself determined by distinct general styles of scientific research guiding each discourse. That is, the Wright-Fisher debate focuses on adaptive process, and tends to be instructed by the mathematical modeling style, while the focus of the Units of Selection controversy is adaptive product, and is typically guided by the function style. The differences between the two discourses can be usefully tracked by examining their interpretations of two contested strategies for theorizing hierarchical selection: horizontal and vertical averaging. (shrink)

An understanding of the ethical problems that have arisen in the funding of scientific research at universities requires some attention to doctrines that have traditionally been held about science itself. Such doctrines, we hope to show, are themselves central to many of these ethical problems. It is often thought that the questions examined by scientists, and the theories that guide scientific research, are chosen for uniquely scientific reasons, independently of extra-scientific questions of value or merit. We shall argue that this (...) is an illusion. It is an illusion to think, especially in the present era, that science can even have a coherent direction apart from extra-scientific considerations. (shrink)

This article is about the implications of a conciliatory view about the epistemology of peer disagreement for our moral beliefs. Many have endorsed a conciliatory view about the epistemology of peer disagreement according to which if we find ourselves in a disagreement about some matter with another whom we should judge to be our epistemic peer on that matter, we must revise our judgment about that matter. This article focuses on three issues about the implications of conciliationism for our moral (...) beliefs. The first is whether there is an asymmetry between the implications of conciliationism for the epistemic status of our moral beliefs and the implications of conciliationism for the epistemic status of our non-moral beliefs; for instance, some have argued that conciliationism leads to epistemological moral skepticism but not to epistemological nonmoral skepticism. The second is what the implications of conciliationism are for the epistemic status of particular moral beliefs. The third is whether conciliationism's impact on the epistemic status of our moral beliefs has practical implications. (shrink)

Some standards, such as moral and prudential standards, provide genuinely or authoritatively normative reasons for action. Other standards, such as the norms of masculinity and the mafia’s code of omerta, provide reasons but do not provide genuinely normative reasons for action. This paper first explains that there is a similar distinction amongst attitudinal standards: some attitudes (belief, desire) have standards that seem to give rise to genuine normativity; others (boredom, envy) do not. This paper gives a value-based account of which (...) attitudinal standards give rise to genuine normativity. It argues that this account has interesting implications before extending it to provide an account of which action-guiding standards are genuinely normative. It argues that this value-based account of which standards are genuinely normative is more plausible than alternatives suggested in the literature and has interesting implications for genuine normativity in law and aesthetics. (shrink)

This chapter argues that the only tenable unconscious inferences theories of cognitive achievement are ones that employ a theory internal technical notion of representation, but that once we give cash-value definitions of the relevant notions of representation and inference, there is little left of the ordinary notion of representation. We suggest that the real value of talk of unconscious inferences lies in (a) their heuristic utility in helping us to make fruitful predictions, such as about illusions, and (b) their providing (...) a high-level description of the functional organization of subpersonal faculties that makes clear how they equip an agent to navigate its environment and pursue its goals. (shrink)

Many including Judith Jarvis Thomson, Philippa Foot, Peter Geach, Richard Kraut, and Paul Ziff have argued for good simpliciter skepticism. According to good simpliciter skepticism, we should hold that there is no concept of being good simpliciter or that there is no property of being good simpliciter. I first show that prima facie we should not accept either form of good simpliciter skepticism. I then show that all of the arguments that good simpliciter skeptics have proposed for their view fail (...) to show that we have good reason to accept good simpliciter skepticism. So, I show that we do not have good reason to accept good simpliciter skepticism. (shrink)

Christopher Cowie has recently argued that companions in guilt arguments against the moral error theory that appeal to epistemic reasons cannot work. I show that such companions in guilt arguments can work if, as we have good reason to believe, moral reasons and epistemic reasons are instances of fundamentally the same relation.

This paper is about how moral disagreement matters for metaethics. It has four parts. In the first part I argue that moral facts are subject to a certain epistemic accessibility requirement. Namely, moral facts must be accessible to some possible agent. In the second part I show that because this accessibility requirement on moral facts holds, there is a route from facts about the moral disagreements of agents in idealized conditions to conclusions about what moral facts there are. In the (...) third part I build on this route to show that (*) if there is significant moral disagreement in idealized conditions, then our understanding of morality is fatally flawed and we should accept relativism over non-naturalism and quasi-realism. So, if, like many, you think that there would be significant moral disagreement in idealized conditions, you should hold that our understanding of morality is fatally flawed and reject non-naturalism and quasi-realism. In the fourth part of this paper I show that (*) undermines the plausibility of non-naturalism, quasi-realism, and the view that our understanding of morality is not fatally flawed even if we do not have sufficient reason to believe that there would be significant moral disagreement in idealized conditions. (shrink)

There is an increase in the use of in-door wireless networking solutions via Wi-Fi and this increase infiltrated and utilized Wi-Fi enable devices, as well as smart mobiles, games consoles, security systems, tablet PCs and smart TVs. Thus the demand on Wi-Fi connections increased rapidly. Rule Based System is an essential method in helping using the human expertise in many challenging fields. In this paper, a Rule Based System was designed and developed for diagnosing the wireless connection problems and attain (...) a precise decision about the cause of the problem. SL5 Object expert system language was used in developing the rule based system. An Evaluation of the rule based system was carried out to test its accuracy and the results were promising. (shrink)

According to fitting-attitude (FA) accounts of value, X is of final value if and only if there are reasons for us to have a certain pro-attitude towards it. FA accounts supposedly face the wrong kind of reason (WKR) problem. The WKR problem is the problem of revising FA accounts to exclude so called wrong kind of reasons. And wrong kind of reasons are reasons for us to have certain pro-attitudes towards things that are not of value. I argue that the (...) WKR problem can be dissolved. I argue that (A) the view that there are wrong kind of reasons for the pro-attitudes that figure in FA accounts conflicts with the conjunction of (B) an extremely plausible and extremely weak connection between normative and motivating rea- sons and (C) an extremely plausible generality constraint on the reasons for pro- attitudes that figure in FA accounts. I argue that when confronted with this trilemma we should give up (A) rather than (B) or (C) because there is a good explanation of why (A) seems so plausible but is in fact false, but there is no good explanation of why (B) and (C) seem so plausible but are in fact false. (shrink)

This article is the preface to a completed book manuscript, United Nations Human Rights Ethics. Based on the indivisibility of human rights, the Four Freedoms Speech, and the Preamble of the Universal Declaration, the book takes freedom of expression as the one human right. Other rights are modes of this one. For example, one exercises freedom of expression (speech) by exercising the right to life, access to courts, etc.. The book argues that human rights are primarily an ethical concept (introduced (...) by Rousseau) rather than a concept of international law. (shrink)

There is an intuitive difference in how we think about pluralism and attitudinal diversity in epistemological contexts versus political contexts. In an epistemological context, it seems problematically arbitrary to hold a particular belief on some issue, while also thinking it perfectly reasonable to hold a totally different belief on the same issue given the same evidence. By contrast, though, it doesn’t seem problematically arbitrary to have a particular set of political commitments, while at the same time thinking it perfectly reasonable (...) for someone in a similar position have a totally different set of political commitments. This chapter examines three explanatory theses that might be used to make sense of this difference: (1) that practical commitments are desire dependent in a way that beliefs are not; (2) that there are reasons to be resolute in practical commitments, but not in beliefs; and (3) that compromise in the face of practical political disagreement doesn’t mitigate controversy, whereas compromise in the face of disagreement about mere beliefs does mitigate controversy. (shrink)

Conor McHugh and Jonathan Way argue that we should put fittingness rather than reasons first because we can provide an account of the evaluative in terms of the normative only if we put fittingness rather than reasons first. I argue that it is no more difficult to provide an account of the evaluative in terms of the normative if we put reasons rather than fittingness first.

The relationship between economics and the philosophy of natural science has changed substantially during the last few years. What was once exclusively a one-way relationship from philosophy to economics now seems to be much closer to bilateral exchange. The purpose of this paper is to examine this new relationship. First, I document the change. Second, I examine the situation within contemporary philosophy of science in order to explain why economics might have its current appeal. Third, I consider some of the (...) issues that might jeopardize the success of this philosophical project. (shrink)

Our concepts of good simpliciter, good for, and good as a particular kind of thing must share some common element. I argue that all three types of goodness can be analysed in terms of the reasons that there are for a certain sets of agents to have pro-attitudes. To this end I provide new and compelling accounts of good for and goodness of a kind in terms of reasons for pro-attitudes that are more explanatorily illuminating than competing accounts and that (...) evade the objections that undermine previous accounts of good for and goodness of a kind in terms of reasons. (shrink)

This article responds to a recent empirical study by De Brigard and Weijers on intuitions about the experience machine and what it tells us about hedonism.

Many have argued that various features of moral disagreements create problems for cognitivism about moral judgment, but these arguments have been shown to fail. In this paper, I articulate a new problem for cognitivism that derives from features of our responses to moral disagreement. I argue that cognitivism entails that one of the following two claims is false: (1) a mental state is a belief only if it tracks changes in perceived evidence; (2) it is intelligible to make moral judgments (...) that do not track changes in perceived evidence. I explain that there is a good case that (1) holds such that we should prefer theories that do not entail the negation of (1). And I argue that the seeming intelligibility of entirely intransigent responses to peer disagreement about moral issues shows us that there is a good case that (2) holds. (shrink)

In a recent issue of Utilitas Gerald Lang provided an appealing new solution to the Wrong Kind of Reason problem for the buck-passing account of value. In subsequent issues Jonas Olson and John Brunero have provided objections to Lang's solution. I argue that Brunero's objection is not a problem for Lang's solution, and that a revised version of Lang's solution avoids Olson's objections. I conclude that we can solve the Wrong Kind of Reason problem, and that the wrong kind of (...) reasons for pro-attitudes are reasons that would not still be reasons for pro-attitudes if it were not for the additional consequences of having those pro-attitudes. (shrink)

Our gender identity is our sense of ourselves as a woman, a man, as genderqueer, or as another gender. Our gender is the property we have of being a woman, being a man, being non-binary, or being another gender. What is the relationship between our gender identity and our gender? Recently, much work has been done on ameliorative accounts of the gender concepts that we should accept and on the metaphysics of gender properties. From this work 4 views of the (...) relationship between having gender identity G (e.g. having a female gender identity) and being a gender G (e.g. being a woman) have emerged. A first, the no connection view, says that gender identity and gender are entirely distinct; Sally Haslanger’s ameliorative account of gender, as well as Theodore Bach’s account of gender properties, are instances of this view. A second, the gender-identity-first view, says that all there is to our gender is our gender identity; this view is at least similar to views that Talia Bettcher and R.A. Briggs and B.R. George have argued for. A third, contextualist view, says that in some contexts and relative to certain standards, our gender identity determines our gender, and that in others it does not; Ásta and Robin Dembroff have proposed and defended views along these lines. A fourth view, the two gender properties view, says that there are two properties that can make it the case that one is gender G (in any context), one’s having gender identity G and one’s being socially classed as a G; Katharine Jenkins and Elizabeth Barnes have proposed views along these lines. This article explains these 4 different views and spells out their prospects, and the problems they face, as both ameliorative and as metaphysical views. (shrink)

This paper challenges Mäki's argument about commonsensibles by offering a case study from contemporary microeconomics – contemporary revealed preference theory (hereafter CRPT) – where terms like "preference," "utility," and to some extent "choice," are radical departures from the common sense meanings of these terms. Although the argument challenges the claim that economics is inhabited solely by commonsensibles, it is not inconsistent with such folk notions being common in economic theory.

It is tempting to think that all of normativity, such as our reasons for action, what we ought to do, and the attitudes that it is fitting for us to have, derives from what is valuable. But value-first approaches to normativity have fallen out of favour as the virtues of reasons- and fittingness-first approaches to normativity have become clear. On these views, value is not explanatorily prior to reasons and fit; rather the value of things is understood in terms of (...) the pro-attitudes it is fitting to have, or that we have reasons to have, towards these things. The value-first accounts of reasons and fit that have been proposed have been direct accounts of reasons and fit. On these views, the fittingness of an attitude is explained in terms of the value of having it or the value of the object of that attitude. This chapter details and surveys these problems, explaining which are yet to be overcome, and explaining which problems direct value-first accounts can overcome. This chapter then explores the prospects of an indirect value-first account of reasons and fit. It argues that it avoids the problems that direct value-first accounts face and may be as explanatorily powerful as fittingness- and reasons-first accounts of value and normativity more generally. (shrink)

Evolutionary debunking arguments in ethics aim to use facts about the evolutionary causes of ethical beliefs to undermine their justification. Global Evolutionary Debunking Arguments (GDAs) are arguments made in metaethics that aim to undermine the justification of all ethical beliefs. Local Evolutionary Debunking Arguments (LDAs) are arguments made in first‐order normative ethics that aim to undermine the justification of only some of our ethical beliefs. Guy Kahane, Regina Rini, Folke Tersman, and Katia Vavova argue for skepticism about the possibility of (...) LDAs. They argue that LDAs cannot be successful because they over‐extend in a way that makes them self‐undermining and yield a form of moral skepticism. In this paper I argue that this skepticism about the possibility of LDAs is misplaced. (shrink)

Although epistasis is at the center of the Fisher-Wright debate, biologists not involved in the controversy are often unaware that there are actually two different formal definitions of epistasis. We compare concepts of genetic independence in the two theoretical traditions of evolutionary genetics, population genetics and quantitative genetics, and show how independence of gene action (represented by the multiplicative model of population genetics) can be different from the absence of gene interaction (represented by the linear additive model of quantitative genetics). (...) The two formulations converge with weak selection but not with strong selection or, for multiple loci, when the aggregated interaction terms are not negligible. As a result of the different formulations of gene interaction, the presence or absence of linkage disequilibrium,/D/, does not necessarily indicate the presence or absence of fitness epistasis. Indeed, linkage disequilibrium is generated in ‘additive’ models in quantitative genetics whenever two (or more) loci experience simultaneous selection. As a research strategy, it is often practical, for theoretical or experimental reasons, to minimize gene interaction by assuming independence of gene action in regard to fitness, or by assuming linear additive effects of multiple loci on a phenotype. However, minimizing the role of epistasis in theoretical investigations hinders our understanding of the origins of diversity and the evolution of complex phenotypes. (shrink)