At many slaughterhouses, if a pregnant cow is killed, then medical companies pay to harvest the fetus's blood. When you communicate the details of this process to people, many of them are disgusted. I submit that those who are repulsed thereby acquire a reason to believe that this practice is morally wrong. However, it is controversial to maintain that disgust can provide moral guidance. So, I develop a theory of disgust’s moral salience that fits with the empirical work that’s been (...) done on it, and I apply it to the collection of bovine fetal blood. I conclude by suggesting how this theory may be of use in animal ethics generally. (shrink)

I contend that there are strong moral reasons for most adult family members to avoid having sex with one another; indeed, I argue that even among consenting adults, incestuous sex is usually wrong. The argument is simple. Absent compelling reasons, it's wrong to take a significant risk with something that's extremely valuable. But having sex with a family member takes a significant risk with something extremely valuable—namely, a family relationship. And since compelling reasons for taking such a risk are very (...) hard to come by, it follows that incest is usually wrong. (shrink)

A potential explanation of a fact is a hypothesis such that, if it were true, it would explain the fact in question. Let’s suppose that we become aware of a fact and some potential explanations thereof. Let’s also suppose that we would like to believe the truth. Given this aim, we can ask two questions. First, is it likely that one of these hypotheses is true? Second, given an affirmative answer to the first question, which one is it likely to (...) be? Inference to the best explanation (IBE) offers answers to both questions. To the first, it says ‘Yes’—assuming that at least one of the hypotheses would, if true, provide a satisfactory explanation of the fact under consideration. To the second, it says that the hypothesis most likely to be true is the one that scores best on the explanatory virtues: conservatism, modesty, simplicity, generality, and predictive power. Many philosophers have argued against IBE’s answer to the first question. I am interested in an objection to its answer to the second. Many philosophers seem to think that it is unsustainable: they seem to think that even if we assume that one of the competing hypotheses is true, we should not think that IBE will help us to identify it. Or, more carefully, if these philosophers are doing what they appear to be doing—namely, offering critiques of IBE that don’t depend on assumptions about the field of competing hypotheses—then their claim is that IBE will not help us to identify the truth. I believe that this is mistaken: the argument for believing it assumes a model of IBE that we have no reason to accept. (shrink)

Meat-eating has been the norm in most human societies. Historically, it has not had many defenders, but this is probably because few thought that it was in need of defense. In the contemporary philosophical literature, however, the pro-vegetarian arguments are usually taken to be quite strong, and omnivores have assumed the burden of proof. The purpose of this entry is to explain this shift by surveying the various frameworks that offer neutral or positive moral assessments of meat-eating. After briefly tracing (...) the evolution of these frameworks from the ancient to modern period, the entry outlines the three most prominent contemporary approaches. It closes by considering possibilities for future research. (shrink)

We aren’t particularly sympathetic to modal realism (MR). Still, it isn’t clear to us that David Lewis argues for it in the wrong way. “The hypothesis is serviceable,” he says, “and that is a reason to think that it is true” (1986, p. 3). Let’s grant him the first claim: MR is serviceable, which is to say that it allows us “to reduce the diversity of notions we must accept as primitive, and thereby to improve the unity and economy of (...) the theory that is our professional concern – total theory, the whole of what we take to be true” (1986, p. 4). Our interest here is in the second claim, the thesis to the effect that a hypothesis’s being serviceable can provide reason to believe it. A number of philosophers maintain that this latter is false; others insist that it’s of no help to Lewis. So on one basis or the other, they conclude that Lewis’ argument for MR doesn’t get off the ground.1 We disagree. Our aim here is to show that there isn’t a cogent objection to Lewis’ use of serviceability that doesn’t rely a premise that he is justified in rejecting. (shrink)

Suppose that disgust can provide evidence of moral wrongdoing. What account of disgust might make sense of this? A recent and promising theory is the social contagion view, proposed by Alexandra Plakias. After criticizing both its descriptive and normative claims, I draw two conclusions. First, we should question the wisdom of drawing so straight a line from biological poisons and pathogens to social counterparts. Second, we don’t need to explain the evidential value of disgust by appealing to what the response (...) tracks. These lessons point toward an alternative: namely, that disgust is a moral heuristic. On the heuristic view, disgust is a trigger for the subconscious use of a particular rule: I show how this view fits with a plausible hypothesis about the social function of disgust, and then apply it to Leon Kass’s famous use of repugnance to criticize cloning. (shrink)

Accounts of modal knowledge are many and varied. How should we choose between them? I propose that we employ inference to the best explanation, and I suggest that there are three desiderata that we should use to rank hypotheses: conservatism, simplicity, and the ability to handle disagreement. After examining these desiderata, I contend that they can’t be used to justify belief in the modal epistemology that fares best, but that they can justify our accepting it in an epistemically significant sense. (...) Finally, I outline a modal epistemology that seems to do well by the standards I’ve recommended. (shrink)

Some philosophers think that a person can justifi ably believe that p is possible even though she has no theory according to which p is possible. They think, for example, that she can justifiably believe that there could be naturally purple elephants even though she lacks (inter alia) a theory about the factors germane to elephant pigmentation. There is a certain optimism about this view: it seems to assume that people are fairly good at ferreting out problems with proposed modal (...) claims; so, if a person doesn’t detect one, then she’s within her rights to assume that there is no problem to be found. I am suspicious of this optimism, but I do not have space to challenge it here. Instead, I want to outline the more pessimistic alternative. Suppose that a person is not justified in believing that p is possible unless she has a theory according to which p is possible. How might such an account be developed? My aim is to map out this neglected option. (shrink)

The articles take a decidedly interdisciplinary look at the opus of the French philosopher, sociologist and pioneer of spatial analysis Henri Lefebvre. His works are reflected upon from theoretical and practical perspectives by authors from various fields closely examining text references from Lefebvre.

(2014). Lines of thought: Central concepts in cognitive psychology. Philosophical Psychology: Vol. 27, No. 3, pp. 445-449. doi: 10.1080/09515089.2012.732338.

Four Views on Free Will is a robust and careful debate about free will, how it interacts with determinism and indeterminism, and whether we have it or not. Providing the most up-to-date account of four major positions in the free will debate, the second edition of this classic text presents the opposing perspectives of renowned philosophers John Martin Fischer, Robert Kane, Derk Pereboom, and Manuel Vargas. -/- Substantially revised throughout, this new volume contains eight in-depth chapters, almost entirely (...) rewritten for the new edition, in which the authors state their different positions on the debate, offer insights into how their views have evolved over the past fifteen years, respond to recent critical literature in the field, and interact and engage with each other in dialogue. In the first four chapters the authors defend their distinctive views about free will: libertarianism, compatibilism, hard incompatibilism, and revisionism. The subsequent four chapters consist of direct replies by each of the authors to the other three. (shrink)

Focusing on the concepts and interactions of free will, moral responsibility, and determinism, this text represents the most up-to-date account of the four major positions in the free will debate. Four serious and well-known philosophers explore the opposing viewpoints of libertarianism, compatibilism, hard incompatibilism, and revisionism The first half of the book contains each philosopher’s explanation of his particular view; the second half allows them to directly respond to each other’s arguments, in a lively and engaging conversation Offers the reader (...) a one of a kind, interactive discussion Forms part of the acclaimed Great Debates in Philosophy series. (shrink)

Do our lives have meaning? Should we create more people? Is death bad? Should we commit suicide? Would it be better if we were immortal? Should we be optimistic or pessimistic? Life, Death, and Meaning brings together key readings, primarily by English-speaking philosophers, on such 'big questions.'.

Biological evolution provides a creative fount of complex and subtle adaptations, often surprising the scientists who discover them. However, because evolution is an algorithmic process that transcends the substrate in which it occurs, evolution’s creativity is not limited to nature. Indeed, many researchers in the field of digital evolution have observed their evolving algorithms and organisms subverting their intentions, exposing unrecognized bugs in their code, producing unexpected adaptations, or exhibiting outcomes uncannily convergent with ones in nature. Such stories routinely reveal (...) creativity by evolution in these digital worlds, but they rarely fit into the standard scientific narrative. Instead they are often treated as mere obstacles to be overcome, rather than results that warrant study in their own right. The stories themselves are traded among researchers through oral tradition, but that mode of information transmission is inefficient and prone to error and outright loss. Moreover, the fact that these stories tend to be shared only among practitioners means that many natural scientists do not realize how interesting and lifelike digital organisms are and how natural their evolution can be. To our knowledge, no collection of such anecdotes has been published before. This paper is the crowd-sourced product of researchers in the fields of artificial life and evolutionary computation who have provided first-hand accounts of such cases. It thus serves as a written, fact-checked collection of scientifically important and even entertaining stories. In doing so we also present here substantial evidence that the existence and importance of evolutionary surprises extends beyond the natural world, and may indeed be a universal property of all complex evolving systems. (shrink)

White matter tracts are known to be susceptible to injury following concussion. The objective of this study was to determine whether contact play in sport could alter white matter metabolite levels in female varsity athletes independent of changes induced by long-term exercise. Metabolite levels were measured by single voxel proton magnetic resonance spectroscopy in the prefrontal white matter at the beginning and end of season in contact and non-contact varsity athletes. Sedentary women were scanned once, at a time equivalent to (...) the Off-Season time point. Metabolite levels in non-contact athletes did not change over a season of play, or differ from age matched sedentary women except that non-contact athletes had a slightly lower myo-inositol level. The contact athletes had lower levels of myo-inositol and glutamate, and higher levels of glutamine compared to both sedentary women and non-contact athletes. Lower levels of myo-inositol in non-contact athletes compared to sedentary women indicates long-term exercise may alter glial cell profiles in these athletes. The metabolite differences observed between contact and non-contact athletes suggest that non-contact athletes should not be used as controls in studies of concussion in high-impact sports because repetitive impacts from physical contact can alter white matter metabolite level profiles. It is imperative to use athletes engaged in the same contact sport as controls to ensure a matched metabolite profile at baseline. (shrink)

Aworkshop was held August 26–28, 2015, by the Earth- Life Science Institute (ELSI) Origins Network (EON, see Appendix I) at the Tokyo Institute of Technology. This meeting gathered a diverse group of around 40 scholars researching the origins of life (OoL) from various perspectives with the intent to find common ground, identify key questions and investigations for progress, and guide EON by suggesting a roadmap of activities. Specific challenges that the attendees were encouraged to address included the following: What key (...) questions, ideas, and investigations should the OoL research community address in the near and long term? How can this community better organize itself and prioritize its efforts? What roles can particular subfields play, and what can ELSI and EON do to facilitate research progress? (See also Appendix II.) The present document is a product of that workshop; a white paper that serves as a record of the discussion that took place and a guide and stimulus to the solution of the most urgent and important issues in the study of the OoL. This paper is not intended to be comprehensive or a balanced representation of the opinions of the entire OoL research community. It is intended to present a number of important position statements that contain many aspirational goals and suggestions as to how progress can be made in understanding the OoL. The key role played in the field by current societies and recurring meetings over the past many decades is fully acknowledged, including the International Society for the Study of the Origin of Life (ISSOL) and its official journal Origins of Life and Evolution of Biospheres, as well as the International Society for Artificial Life (ISAL). (shrink)

The author presents a model of moral responsibility based on the actual sequence and the notion of reason-responsiveness, and draws an analogy between this model and Robert Nozick’s model of knowledge based on the actual sequence. In addition, the concept of semicompatibilism is introduced and explained.