Those who model doxastic states with a set of probability functions, rather than a single function, face a pressing challenge: can they provide a plausible decision theory compatible with their view? Adam Elga and others claim that they cannot, and that the set of functions model should be rejected for this reason. This paper aims to answer this challenge. The key insight is that the set of functions model can be seen as an instance of the supervaluationist approach to vagueness (...) more generally. We can then generate our decision theory by applying the general supervaluationist semantics to decision-theoretic claims. The result: if an action is permissible according to all functions in the set, it’s determinately permissible; if impermissible according to all, determinately impermissible; and – crucially – if permissible according to some, but not all, it’s indeterminate whether it’s permissible. This proposal handles with ease some difficult cases ) on which alternative decision theories falter. One reason this view has been overlooked in the literature thus far is that all parties to the debate presuppose that an acceptable decision theory must classify each action as either permissible or impermissible. But I will argue that this thought is misguided. Seeing the set of functions model as an instance of supervaluationism provides a compelling motivation for the claim that there can be indeterminacy in the rationality of some actions. (shrink)

There is an important division in the human mind between perception and reasoning. We reason from information that we have already, but perception is a means of taking in new information. Susanna Siegel argues that these two aspects of the mind become deeply intertwined when beliefs, fears, desires, or prejudice influence what we perceive.

Philosophy and Phenomenological Research, Volume 104, Issue 1, Page 3-18, January 2022.

There are powerful reasons to think of perceptual content as determined at least in part by the environment of the perceiving subject. Externalist views such as this are often rejected on grounds that they do not give a good account of hallucinations. The chapter shows that this reason for rejecting content externalism is not well founded if we embrace a moderate externalism about content, that is, an externalist view on which content is only in part dependent on the experiencing subject“s (...) environment. The chapter starts by motivating content externalism. It then argues that hallucinations are best understood in terms of a deficiency of veridical perceptual experiences. The chapter discusses the consequences of this thesis by developing a view of hallucinations that is committed to externalism about content. (shrink)

What do we see? We are visually conscious of colors and shapes, but are we also visually conscious of complex properties such as being John Malkovich? In this book, Susanna Siegel develops a framework for understanding the contents of visual experience, and argues that these contents involve all sorts of complex properties. Siegel starts by analyzing the notion of the contents of experience, and by arguing that theorists of all stripes should accept that experiences have contents. She then introduces (...) a method for discovering the contents of experience: the method of phenomenal contrast. This method relies only minimally on introspection, and allows rigorous support for claims about experience. She then applies the method to make the case that we are conscious of many kinds of properties, of all sorts of causal properties, and of many other complex properties. She goes on to use the method to help analyze difficult questions about our consciousness of objects and their role in the contents of experience, and to reconceptualize the distinction between perception and sensation. Siegel's results are important for many areas of philosophy, including the philosophy of mind, epistemology, and the philosophy of science. They are also important for the psychology and cognitive neuroscience of vision. (shrink)

Perception is our key to the world. It plays at least three different roles in our lives. It justifies beliefs and provides us with knowledge of our environment. It brings about conscious mental states. It converts informational input, such as light and sound waves, into representations of invariant features in our environment. Corresponding to these three roles, there are at least three fundamental questions that have motivated the study of perception. How does perception justify beliefs and yield knowledge of our (...) environment? How does perception bring about conscious mental states? How does a perceptual system accomplish the feat of converting varying informational input into mental representations of invariant features in our environment? -/- This book presents a unified account of the phenomenological and epistemological role of perception that is informed by empirical research. So it develops an account of perception that provides an answer to the first two questions, while being sensitive to scientific accounts that address the third question. The key idea is that perception is constituted by employing perceptual capacities - for example the capacity to discriminate instances of red from instances of blue. Perceptual content, consciousness, and evidence are each analyzed in terms of this basic property of perception. Employing perceptual capacities constitutes phenomenal character as well as perceptual content. The primacy of employing perceptual capacities in perception over their derivative employment in hallucination and illusion grounds the epistemic force of perceptual experience. In this way, the book provides a unified account of perceptual content, consciousness, and evidence. (shrink)

Many researchers consider language to be definitionally unique to humans. However, increasing evidence suggests that language emerged via a series of adaptations to neural systems supporting earlier capacities for visuomotor integration and manual action. This paper reviews comparative neuroscience evidence for the evolutionary progression of these adaptations. An outstanding question is how to mechanistically explain the emergence of new capacities from pre-existing circuitry. One possibility is that human brains may have undergone selection for greater plasticity, reducing the extent to which (...) brain organization is hard-wired and increasing the extent to which it is shaped by socially transmitted, learned behaviors. Mutations that made these new abilities easier or faster to learn would have undergone positive selection, and over time, the neural changes once associated with individual neural plasticity would tend to become heritable, innate, and fixed. Clearly, though, language is not entirely “innate;” it does not emerge without the requisite environmental input and experience. Thus, a mechanistic explanation for the evolution of language must address the inherent trade-off between the evolutionary pressure for underlying neural systems to be flexible and sensitive to environmental input vs. the tendency over time for continually adaptive behaviors to become reliably expressed in an early-emerging, canalized, less flexible manner. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Ideas 61.2 (2000) 285-304 [Access article in PDF] Vacher de Lapouge and the Rise of Nazi Science Jennifer Michael Hecht * In the literature on the history of the Shoah the existence of a tradition of explicit anti-morality has been generally ignored. 1 This article argues that the materialist anthropology of the late nineteenth and early twentieth centuries waged a direct attack on (...) morality, which was described as inherently linked to religion. Strict materialism also denied any human access to the eternal except through biological lineage, linking the past, present, and future. This concern with procreation, which culminated in a desire to change the racial content of the world, led anthropology to aim its attack on morality on restrictive sexual mores and the injunction not to kill. Still, anti-morality was not conjured up in order to further eugenics; it was an independent idea and an explicit response to the loss of God. The anthropologist who best illustrates this scientific anti-morality is Georges Vacher de Lapouge, the French inventor of "anthroposociology." The present article explicates Lapouge's anti-morality and establishes a connection between his racial theories and those of a coterie of German colleagues. Most notable among these German colleagues was Hans Günther, whose vision had a role in shaping Nazi racial policy, in particular the Nazi interest in head measurements. Scholars investigating the origins of German racism have discovered French influence but have focused on Gobineau and his almost anti-scientific literary racism. This article argues that Lapouge and his scientific racism were also important.The relative significance of ideology in the "Final Solution" is the subject of some debate. This article seeks not to enter that debate but rather to reevaluate the nature of the ideology. It seems clear that whatever may have been the relative importance of ideas to, for instance, mundane careerism and conformity, the [End Page 285] ideas did play a role. 2 Within that context it will be demonstrated that Lapouge's anthroposociology helped to legitimate racialist utopianism. The scientific status of anthroposociology was deliberately engaged as propaganda for the regime, even after the specifics of its injunctions were no longer of much interest to the programmers of genocide.Whatever made people enact and accept genocide as daily routine, the idea of it came from somewhere, and somehow "the moral sensitivities" of the people were dulled. 3 Increasingly, historians stress that along with older forms of anti-Semitism, new scientific doctrines had a direct effect on events. There are a number of studies on the role of science in National Socialist doctrine, but they tend to be more about the role of doctors and the medical model of society than they are about anthropology. 4 Those that do deal with anthropology tend to mention Lapouge as an interesting forerunner but consistently fail to recognize his direct influence on Nazi doctrine. 5Lapouge's contribution to racism was a quantitative, well-written race theory that was replete with the language and tools of science. It was particularly appealing because it described a collection of human groups which sounded too scientific and clinical to be political. The value-laden descriptions of these clinical types (based on head shape) were easily transferred to known "racial" or social groups--with the simple claim that this or that group tended to have this or that head shape. Lapougian race theory was convincing because it was alien and yet confirmed familiar suspicions. It was thus highly instrumental in vitalizing dormant or mild prejudice. These ideas (and the endless columns of measurements and descriptions of head shapes) have grown so foreign to present day beliefs that they have become somewhat invisible to our eyes. Because of this, historians have not fully appreciated one of the important factors contributing to the "respectability" and credibility of a genocidal doctrine.In studying people who were guilty of unparalleled cruelty, historians expected to find moral agony and found instead a bureaucratic, mechanistic, banality. [End Page 286] In considering scientific racism, on the other hand, historians... (shrink)

A provocateur does not pose a threat of harm. Hence, a forceful response to provocation is generally considered wrongful. And yet, a provocateur is often denied recourse to a self-defence justification if she defends herself against such a violent response. In recent work, Kimberly Ferzan argues that a provocateur forfeits defensive rights but this forfeiture cannot be explained in the same way as an aggressor’s rights forfeiture. Ordinarily, one forfeits the right not to be harmed and to self-defend against harm (...) by threatening to violate another person’s rights. But provocateurs forfeit their defensive rights because they bring about the situation in which defence becomes necessary. As I argue here, positing these two types of forfeiture justifications is neither desirable nor necessary. I suggest a unified rights forfeiture account that grounds rights forfeiture in moral responsibility for an unjust threat. My account offers clearer distinctions than alternative unified accounts, which I briefly discuss. Furthermore, the account can provide better explanations of intuitively plausible judgements. A provocateur will have less extensive defensive rights than an innocent victim, but will not lose all her defensive rights simply because ‘she started it.’. (shrink)

In this paper I argue that it's possible that the contents of some visual experiences are influenced by the subject's prior beliefs, hopes, suspicions, desires, fears or other mental states, and that this possibility places constraints on the theory of perceptual justification that 'dogmatism' or 'phenomenal conservativism' cannot respect.

Early formulations of disjunctivism about perception refused to give any positive account of the nature of hallucination, beyond the uncontroversial fact that they can in some sense seem to the same to the subject as veridical perceptions. Recently, some disjunctivists have attempt to account for hallucination in purely epistemic terms, by developing detailed account of what it is for a hallucinaton to be indiscriminable from a veridical perception. In this paper I argue that the prospects for purely epistemic treatments of (...) hallucinations are dim, and that this undermines the case for disjunctivism. (shrink)

What things make a state “nuclear,” what makes things “nuclear,” and how do we know? The degree to which—and purpose for which—a nation, a program, a technology, or a material counts as “nuclear” is not always a matter of consensus. Nuclearity depends on history and geography, science and technology, bodies and politics, radiation and race, states and capitalism. It is not so much an essential property of things, as it is distributed in things. Settlements about degrees of nuclearity structure global (...) control over the flow of radioactive materials; they constitute the conceptual bedrock of antinuclear movements and nuclear power industries; they affect regulatory frameworks for occupational health and compensation for work‐related illnesses. This essay explores these themes by contemplating the Nuclear Non‐Proliferation Treaty, the implementation of safeguards, and a few other nuclear things. (shrink)

In discussions of perception and its relation to knowledge, it is common to distinguish what one comes to believe on the basis of perception from the distinctively perceptual basis of one's belief. The distinction can be drawn in terms of propositional contents: there are the contents that a perceiver comes to believe on the basis of her perception, on the one hand; and there are the contents properly attributed to perception itself, on the other. Consider the content.

There has been a recent surge of interest in ancient accounts of free will. It is surprising, then, that there have been virtually no attempts to discuss whether Plato had such an account. Those who have made an attempt quickly deny that such an account is present in the dialogues. I shall argue that if we draw a distinction between two notions of free will, it is plausible that some account of free will is, in fact, present in the dialogues, (...) the Republic in particular. This is the first in depth search into the question and I demonstrate that the defender of a Platonic free will thesis has more resources than she first appears to. It also has the benefit of giving us an obvious source material for Augustine's discussion. (shrink)

In this paper one aspect of Leibniz' optical ideas, the law of refraction, is the main topic. This law had been formulated before him by Snellius, Descartes and Fermat. Their mathematical equations are analogous in the relations between the geometrical parameters and the optical resistances, but they differ concerning the velocities of light. From the Leibnitian point of view this situation has its reasons in uncompletely developed principles. Leibniz had shown that the solution of this problem requires a new metaphysics (...) as well as other mathematical, namely infinitesimal methods, which are connected in Leibniz by his dynamics. As one of the influences of his dynamical statement, the beginning of a new type of physical explanation will be demonstrated, which replaced the construction of mechanical models in the 18th century. (shrink)

Narrative form is crucial to the understanding of science in popular culture. This is particularly true with subjects such as radiation, in which the technical details at hand are often remote from everyday experience—as well as contested or uncertain among experts. This article examines the narrative choices made by three popular texts that publicized radiation risks to the public during the Cold War: John Hersey's Hiroshima, David Bradley's No Place to Hide, and Ralph Lapp's The Voyage of the Lucky Dragon. (...) It contends that each author borrowed from well-established literary genres and that this borrowing was crucial to coherence and effective messaging of the argument. At the same time, placing the arguments in such a familiar form served to blunt some of the radical potential in those same messages. (shrink)

Most interpretations of the Crito, such as the absolute obligation view and the civil disobedience view, are thought to be grounded largely in an obligation of gratitude. I present arguments for why these interpretations are not viable, and then propose an alternative solution; this alternative is the obligation of fair play. While the obligation of fair play has been discussed before in relation to the Crito, this is the first full account of the position. The fair play interpretation both precludes (...) absolute obligation and does not require civil disobedience to resolve supposed inconsistencies with the Apology. (shrink)

German philosophy as it is today can best disprove the various theories of "Historical Reason." Philosophic thought seems to go its necessary way regardless of immediate historical and social situations.

In this paper, I describe and criticize M.G.F. Martin's version of disjunctivism, and his argument for it from premises about self-knowledge.

In this paper I offer a theory of what makes certain influences on visual experiences by prior mental states (including desires, beliefs, moods, and fears) reduce the justificatory force of those experiences. The main idea is that experiences, like beliefs, can have rationally assessable etiologies, and when those etiologies are irrational, the experiences are epistemically downgraded.

I argue that perception is necessarily situation-dependent. The way an object is must not just be distinguished from the way it appears and the way it is represented, but also from the way it is presented given the situational features. First, I argue that the way an object is presented is best understood in terms of external, mind-independent, but situation-dependent properties of objects. Situation-dependent properties are exclusively sensitive to and ontologically dependent on the intrinsic properties of objects, such as their (...) shape, size, and color, and the situational features, such as the lighting conditions and the perceiver’s location in relation to the perceived object. Second, I argue that perceiving intrinsic properties is epistemically dependent on representing situation-dependent properties. Recognizing situation-dependent properties yields four advantages. It makes it possible to embrace the motivations that lead to phenomenalism and indirect realism by recognizing that objects are presented a certain way, while holding on to the intuition that subjects directly perceive objects. Second, it acknowledges that perceptions are not just individuated by the objects they are of, but by the ways those objects are presented given the situational features. Third, it allows for a way to accommodate the fact that there is a wide range of viewing conditions or situational features that can count as normal. Finally, it makes it possible to distinguish perception and thought about the same object with regard to what is represented. (shrink)

This paper defends a principle I call Equal Treatment, according to which the rationality of a belief is determined in precisely the same way as the rationality of any other state. For example, if wearing a raincoat is rational just in case doing so maximizes expected value, then believing some proposition P is rational just in case doing so maximizes expected value. This contrasts with the popular view that the rationality of belief is determined by evidential support. It also contrasts (...) with the common idea that in the case of belief, there are two different incommensurable senses of rationality, one of which is distinctively epistemic. I present considerations that favor Equal Treatment over these two alternatives, reply to objections, and criticize some arguments for Evidentialism. I also show how Equal Treatment opens the door to a distinctive kind of response to skepticism. (shrink)

In this paper, I argue that certain perceptual relations are represented in visual experience.

In contrast to Clarke and Beck's claim that that the approximate number system represents rational numbers, we argue for a more modest alternative: The ANS represents natural numbers, and there are separate, non-numeric processes that can be used to represent ratios across a wide range of domains, including natural numbers.

In this paper I argue that causal relations between objects are represented in visual experience, and contrast my argument and its conclusion with Michotte's results from the 1960's.

This paper defends the Content View: the thesis that all visual experiences have contents.

This paper develops and defends the capacity view, that is, the view that the ability to perceive the perspective-independent or intrinsic properties of objects depends on the perceiver’s capacity to act. More specifically, I argue that self-location and spatial know-how are jointly necessary to perceive the intrinsic spatial properties of objects. Representing one’s location allows one to abstract from one’s particular vantage point to perceive the perspective-independent properties of objects. Spatial know-how allows one to perceive objects as the kind of (...) things that are perceivable from points of view other than one’s own and thus to perceive them as three-dimensional space occupiers. (shrink)

The first full philological edition in English of the Roman philosopher Seneca's De Clementia. It includes the Latin text with apparatus criticus, a new English translation, a substantial introduction, and a commentary on matters of textual and literary criticism and issues of socio-political, historical, cultural, and philosophical significance.

When a person finds herself in peril her right to be rescued is activated and a rescue duty is imposed on those who are in a position to help. In this article, I argue that the activation of the right to be rescued needs to be suitably constrained so that the rescuee is prevented from arbitrarily controlling the normative situation between herself and potential rescuers. Such control would be in conflict with the moral equality of persons. I argue that the (...) activation of the right to be rescued should be conditional on the person having a justification for the action that caused her peril. One implication of my view is that the right to be rescued cannot fulfill the function that Jonathan Quong ascribes to it. The right to be rescued turns out to be an unsuitable ground for the necessity condition which constrains the permissible use of defensive force. (shrink)

I offer an explanation of how subjects are able to perceive the intrinsic spatial properties of objects, given that subjects always perceive from a particular location. The argument proceeds in two steps. First, I argue that a conception of space is necessary to perceive the intrinsic spatial properties of objects. This conception of space is spelled out by showing that perceiving intrinsic properties requires perceiving objects as the kind of things that are perceivable from other locations. Second, I show that (...) having such a conception of space presupposes that a subject represent her location in relation to perceived objects. More precisely the thesis is that a subject represents her location as the location from which she both perceives objects and would act in relation to objects were she to act. So I argue that perception depends on the capacity to know what it would be to act in relation to objects. (shrink)

This is the Stanford Encyclopedia of Philosophy entry on the contents of perception.

In this paper I discuss several proposals for how to find out which contents visual experiences have, and I defend the method I.

Philosophy and Phenomenological Research, Volume 104, Issue 2, Page 434-453, March 2022.

Op-ed about the role of anti-hypocrisy in political criticism.

This book breaks new ground in our understanding of how we perceive and represent the space around us - one of the central topics in cognitive psychology. It presents a new view of development and spatial cognition by reversing the usual focus on vision and examining the evidence on representation in the total absence of vision without specific brain damage. Findings from the author's work with congenitally totally blind and with sighted children, together with studies from a wide variety of (...) other areas, are set in the context of intersensory and spatial development. Touch and movement are considered as converging sources of reference information with and without vision. The findings have important implications for future work in many fields, particularly developmental pscychology; cognition, cognitive neuroscience and visual handicap, and make this new work essential reading for students and researchers in these fields. (shrink)