Jonathan Weisberg claims that certain probability assessments constructed by Jeffrey conditioning resist subsequent revision by a certain type of after-the-fact defeater of the reasons supporting those assessments, and that such conditioning is thus “inherently anti-holistic.” His analysis founders, however, in applying Jeffrey conditioning to a partition for which an essential rigidity condition clearly fails. Applied to an appropriate partition, Jeffrey conditioning is amenable to revision by the sort of after-the-fact defeaters considered by Weisberg in precisely the way that he demands.

Suppose that several individuals who have separately assessed prior probability distributions over a set of possible states of the world wish to pool their individual distributions into a single group distribution, while taking into account jointly perceived new evidence. They have the option of first updating their individual priors and then pooling the resulting posteriors or first pooling their priors and then updating the resulting group prior. If the pooling method that they employ is such that they arrive at the (...) same final distribution in both cases, the method is said to be externally Bayesian, a property first studied by Madansky . We show that a pooling method for discrete distributions is externally Bayesian if and only if it commutes with Jeffrey conditioning, parameterized in terms of certain ratios of new to old odds, as in Wagner , rather than in terms of the posterior probabilities of members of the disjoint family of events on which such conditioning originates. (shrink)

Hodgkin and Huxley’s model of the action potential is an apparent dream case of covering‐law explanation in biology. The model includes laws of physics and chemistry that, coupled with details about antecedent and background conditions, can be used to derive features of the action potential. Hodgkin and Huxley insist that their model is not an explanation. This suggests either that subsuming a phenomenon under physical laws is insufficient to explain it or that Hodgkin and Huxley were wrong. I defend Hodgkin (...) and Huxley against Weber’s heteronomy thesis and argue that explanations are descriptions of mechanisms. †To contact the author, please write to: Department of Philosophy, Philosophy‐Neuroscience‐Psychology Program, Washington University in St. Louis, One Brookings Drive, Wilson Hall, St. Louis, MO 63130; e‐mail: [email protected]. (shrink)

The underdetermination of theory by evidence must be distinguished from holism. The latter is a doctrine about the testing of scientific hypotheses; the former is a thesis about empirically adequate logically incompatible global theories or "systems of the world". The distinction is crucial for an adequate assessment of the underdetermination thesis. The paper shows how some treatments of underdetermination are vitiated by failure to observe this distinction, and identifies some necessary conditions for the existence of multiple empirically equivalent global theories. (...) We consider how empiricists should respond to the possibility of such systems of the world. (shrink)

Since the publication of Listening to Prozac there have been many debates about how and why Prozac and other similar drugs are prescribed. The articles that follow take up debates about what conditions such drugs can and should address, questions about authenticity in using drugs for psychic well‐being, and concerns about what means we morally endorse in projects of self‐creation. The contributions from Carl Elliott, Peter Kramer, James Edwards, and David Healy derive from a project supported by the Social (...) Sciences and Humanities Research Council of Canada, “Enhancement Technologies and Human Identity.” Psychiatry, like the Prozac it prescribes, aims to enhance the patient's internal psychic well‐being. Yet what ails many may be not an internal state like depression or anxiety, but alienation. And the experts of the self to whom we turn cannot “cure” our collective form of life in which alienation takes root. (shrink)

In this article we investigate infinitary propositional logics from the perspective of their completeness properties in abstract algebraic logic. It is well-known that every finitary logic is complete with respect to its relatively subdirectly irreducible models. We identify two syntactical notions formulated in terms of intersection-prime theories that follow from finitarity and are sufficient conditions for the aforementioned completeness properties. We construct all the necessary counterexamples to show that all these properties define pairwise different classes of logics. Consequently, we obtain (...) a new hierarchy of logics going beyond the scope of finitarity. (shrink)

The classic logical positivist account of historical explanation, putting forward what is variously called the "regularity interpretation" (#Gardiner, The Nature of Historical Explanation), the "covering law model" (#Dray, Laws and Explanation in History), or the "deductive model" (Michael #Scriven, "Truisms as Grounds for Historical Explanations"). See also #Danto, Narration and Knowledge, for further criticisms of the model. Hempel formalizes historical explanation as involving (a) statements of determining (initial and boundary) conditions for the event to be explained, and (b) statements of (...) general laws that imply that whenever events of the kind described in (a) occur, an event of the kind to be explained will take place. He admits that in practice historians rarely explain historical events in this way, but instead give only fragmentary "explanation sketches." Such sketches can, however, be "scientifically acceptable," providing it points to where "more specific statements" are to be found (351). An interesting aspect of the article is its "late" positivist, proto‑Kuhnian assertion that "the separation of 'pure description' and 'hypothetical generalization and theory construction' in empirical science is unwarranted" (356). But Hempel does not work out the wider implications of this important conclusion. It is also worth noting that he himself was not much interested in the philosophy of history; other authors took up his model and discussed it within that context. Usefully discussed by #Ricoeur, Time and Narrative, 1:112‑17. (shrink)

Under what conditions are people responsible for their choices and the outcomes of those choices? How could such conditions be fostered by liberal societies? Should what people are due as a matter of justice depend on what they are responsible for? For example, how far should healthcare provision depend on patients' past choices? What values would be realized and which hampered by making justice sensitive to responsibility? Would it give people what they deserve? Would it advance or hinder equality? The (...) explosion of philosophical interest in such questions has been fuelled by increased focus on individual responsibility in political debates. Political philosophers, especially egalitarians, have responded to such developments by attempting to map out the proper place for responsibility in theories of justice. This book both reflects on these recent developments in normative political theory and moves the debate forwards. (shrink)

An electron clearly has the property of having a charge of þ1.6 10 19 coulombs, but does it also have the property of being charged ? Philosophers have worried whether so-called ‘determinable’ predicates, such as ‘is charged’, actually refer to determinable properties in the way they are happy to say that determinate predicates, such as ‘has a charge of þ1.6 10 19 coulombs’, refer to determinate properties. The distinction between determinates and determinables is itself fairly new, dating only to its (...) definition by the Cambridge logician W. E. Johnson early in the last century.1 But despite its newly minted condition the distinction has found little currency in on-going philosophical debates. Or at least until recently. Renewed interest in realist positions about properties, and arguments that the determinable-determinate relation may hold the key to understanding mental causation, have thrust Johnson’s distinction to the fore. With this new attention has also come new ‘optimistic’ positions that endorse the existence of determinable properties. David Armstrong, Evan Fales, and Sydney Shoemaker, among others, have all defended such optimistic accounts that take determinable predicates, such as ‘is charged’, to refer to determinable properties.2 In this paper, our goal is to carefully assess optimism and to argue that a pessimistic view, which rejects the existence of determinable properties, is actually the appropriate default position. (shrink)

In this paper I discuss some conditions forunderstanding teaching as an act ofresponsibility towards an other, rather than asan instrumental act identified throughepistemology. I first put the latter intocontext through a critical reading of teachingas it is inscribed in humanistic discourses oneducation. Within these discourses, I explorehow students are treated as objects ofknowledge that reinforce the teacher's ego. Icontend that the taking up of this positionmakes not only an ethical relation to thestudent impossible, but also disqualifies anytype of meaningful social (...) relation. Therefore Iargue that teachers have to give up theirposition on the safe side of knowledge andparticipate in the time of risk when meetingthe other means to take responsibility for thatother from a position of vulnerability.Moreover, it is precisely because of this riskthat teaching as an ethical relation becomespossible and where it begins to resound withpoetry. (shrink)

The reliability of a belief-producing process is a matter of how likely it is that the process will produce beliefs that are true. The term reliabilism may be used to refer to any position that makes this idea of reliability central to the explication of some important epistemic concept. I know of three such positions that appeal to some epistemologists: a reliabilist account of what makes a belief justified, a reliabilist account of what makes a true belief knowledge, and a (...) reliabilist answer to the question of the fourth condition, the question of what must be added to justified true belief to make knowledge. Obviously these are alternative positions rather than parts of a single coherent whole. I think of the first as reliabilism’s boldest stand, the second as the position to which it may retreat when the first is found untenable, and the third as its last refuge. I will criticize only the first two positions. (shrink)

I provide a unified account of hope and fear as propositional attitudes. This “mirror account” is based on the historical idea that the only difference between hope and fear is the conative attitude involved, positive for hope and negative for fear. My analysis builds on a qualified version of the standard account of hope. The epistemic condition is formulated in terms of live possibility and the conative according to a non-reductive view on desire and aversion. The account demonstrates the theoretical (...) fruitfulness of accepting Jack M. C. Kwong’s distinction between hope and fear as propositional attitudes and experiential states. (shrink)

What are the relative epistemic merits of building prosthetic models versus building nonprosthetic models and simulations? I argue that prosthetic models provide a sufficient test of affordance validity, that is, of whether the target system affords mechanisms that can be commandeered by a prosthesis. In other respects, prosthetic models are epistemically on par with nonprosthetic models. I focus on prosthetics in neuroscience, but the results are general. The goal of understanding how brain mechanisms work under ecologically and physiologically relevant conditions (...) is narrow compared to the search for maker's knowledge about how the brain can be made to work for us. (shrink)

This paper interrogates the relation between reciprocity and ethics as it concerns participation in the world of work and organizations. Tracing discussions of business and organizational ethics that concern themselves, respectively, with the ethics of self-interest, the ethics of reciprocity, and the ethics of generosity, we explore the possibility of ethical relations with those who are seen as radically different, and who are divested of anything worth exchanging. To address this we provide a reading of Franz Kafka’s famous novella The (...) Metamorphosis and relate to it as a means to extend our understanding of business and organizational ethics. This story, we demonstrate, yields insight into the unbearable demands of ethics as they relate to reciprocity and generosity. On this basis, we draw conclusions concerning the mutually constitutive ethical limitations of reciprocity and generosity as ethical touchstones for organizational life while simultaneously accepting the seemingly insurmountable difficulties of exceeding those limits. In such a condition, we argue, ethics is not best served by adopting idealistic or moralizing positions regarding generosity but rather by working in the indissoluble tensions between self and other. (shrink)

We establish a probabilized version of modus tollens, deriving from p(E|H)=a and p()=b the best possible bounds on p(). In particular, we show that p() 1 as a, b 1, and also as a, b 0. Introduction Probabilities of conditionals Conditional probabilities 3.1 Adams' thesis 3.2 Modus ponens for conditional probabilities 3.3 Modus tollens for conditional probabilities.

Hybrid techniques and perceptual technologies that merge the physical and the virtual dimensions of reality are generating a conceptual and experiential working space to reconfigure relationships between the perceiver and the perceived. We are entering a new perceptual paradigm where form, content, and context are merging, generating radical new types of spatial construction. Through the development of hybrid spatial technologies we can now hack the individual’s sense of space and relationship to the world (transforming the subject/object relationship). How can we (...) develop and use emerging spatial technologies to reconfigure spatial perception? Can we adapt and transform the dominant perceptive regimen, which is still based on the Cartesian split (subject-object separation)? We continue to see ourselves as separated from the environment and still need to digest the new changes brought about by hybrid techniques and methodologies that are shaping these new dimensions of space. How adaptable is our perception? The ability to alter our understanding of space provides us with a new form of spatial (self) control; sub-merging identities. What are the biological risks? What are the limits of stretching the perceptive range of the body? This article will examine these questions as an opportunity to humanise technology and create a ‘Human Centric Hybrid Literacy’. We will examine which technologies, techniques and navigation methodologies are being used by artists, technologists and designers to enable this new era of spatial augmentation and perceptual adaptation. Some examples include macroscopic navigation, 360 degree vision, new types of perspective (including third and fourth person perspectives) and reverse engineering. The role that hybrid space plays in the construction and transformation of perception through the practice of context engineering will be examined. Context engineering (Smith, 2013) is understood as an ‘intermediality’ practice for the engagement and augmentation of perception; giving us control over our senses, allowing us to adjust them in real time. Context engineering creates a new economy where we focus less on transforming content (as the primary activity), and more on how we can make our own perception the ‘content’. (shrink)

It has often been recommended that the differing probability distributions of a group of experts should be reconciled in such a way as to preserve each instance of independence common to all of their distributions. When probability pooling is subject to a universal domain condition, along with state-wise aggregation, there are severe limitations on implementing this recommendation. In particular, when the individuals are epistemic peers whose probability assessments are to be accorded equal weight, universal preservation of independence is, with a (...) few exceptions, impossible. Under more reasonable restrictions on pooling, however, there is a natural method of preserving the independence of any fixed finite family of countable partitions, and hence of any fixed finite family of discrete random variables. (shrink)

This paper defends my claim in earlier work that certain non-causal conditions are sufficient for the truth of some reasons explanations of actions, against the critique of this claim given by Randolph Clarke in his book, Libertarian Accounts of Free Will.

The psychopathic personality disorder historically has been thought to include an insensitivity to morality. Some have thought that the psychopath's insensitivity indicates that he does not understand morality, but the relationship between the psychopath's defects and moral understanding has been unclear. We attempt to clarify this relationship, first by arguing that moral understanding is incomplete without concern for morality, and second, by showing that the psychopath demonstrates defects in frontal lobe activity which indicate impaired attention and adaptation to environmental conditions (...) which are relevant to the formation of complex intentions. We argue that these frontal lobe defects can help to explain both the psychopath's apparent insensitivity to morality and his characteristic imprudence. (shrink)

Ecology and Revolution: Global Crisis and the Political Challenge is an in-depth exploration and analysis of the global ecological crisis (going far beyond the issue of global warming) in the larger context of historical conditions and ...

Much of the literature on the free energy principle has focused on how organisms maintain homeostasis amidst a constantly changing environment. A fundamental feature of the FEP is that biological entities are “hard-wired” towards self-preservation.However, contrary to this notion, there do exist organisms that appear to seek out rather than avoid conditions that pose an elevated risk of serious injury or death, thereby jeopardizing their physiological integrity. Borrowing a term used in 1990s popular culture to refer to stunt performers like (...) Evel Knievel, these organisms that exhibit such behavioural characteristics can be referred to as daredevils.This paper presents the case of daredevils as a challenge to the FEP’s homeostasis- and optimization-based construal of biological systems. It also introduces three possible explanatory strategies by which the FEP can account for daredevils. The broader objective of the paper is to enhance the FEP’s ability to account for a diverse range of complex behaviour. (shrink)

Richard Jeffrey’s “Conditioning, Kinematics, and Exchangeability” is one of the foundational documents of probability kinematics. However, the section entitled “Successive Updating” contains a subtle error regarding the applicability of updating by so-called relevance quotients in order to ensure the commutativity of successive probability kinematical revisions. Upon becoming aware of this error, Jeffrey formulated the appropriate remedy, but he never discussed the issue in print. To head off any confusion, it seems worthwhile to alert readers of Jeffrey’s “Conditioning, Kinematics, and Exchangeability” (...) to the aforementioned error and to document his remedy, placing it in the context of both earlier and subsequent work on commuting probability kinematical revisions.1. (shrink)

Given someone’s fully specified posterior probability distribution q and information about the revision method that they employed to produce q, what can you infer about their prior probabilistic commitments? This question provides an entrée into a thoroughgoing discussion of a class of parameterizations of Jeffrey conditioning in which the parameters furnish information above and beyond that incorporated in \. Our analysis highlights the ubiquity of Bayes factors in the study of probability revision.

This book develops a liberal theory of justice in exchange. It identifies the conditions that market exchanges need to fulfill to be just. It also addresses head-on a consequentialist challenge to existing theories of exchange, namely that, in light of new harms faced at the global level, we need to consider the combined consequences of millions of market exchanges to reach a final judgment about whether some individual exchange is just. The author argues that, even if we accept this challenge, (...) the effect of it is minimal. For different reasons, normatively problematic collective market outcomes like externalities, monopolies, violations of the Lockean proviso, inequality, and commodification do not pose particular problems to the justice of market exchanges. He outlines the various conditions a market exchange needs to fulfill to be considered just from a liberal background and in light of the new harms. Ultimately, he shows, it is not the market which is to blame; if we want to tackle issues like global warming or global economic injustice, we should not blindly follow the intuition that we best restrain and regulate markets. Commutative Justice is unique in its focus on justice in exchange rather than on end-state distributive justice, and the way in which it addresses the new harms we are facing today. It will be of interest to researchers and advanced students in philosophy, politics, and economics who are working on questions of economic justice. (shrink)

This paper examines the account of guidance control given in Fischer and Ravizza's book, Responsibility and Control, with the aim of revising it so as to make it a better account of what needs to be added to having alternatives open to yield a specification of the control condition for responsibility that will be acceptable to an adherent of the principle that one is responsible for something only if one could have avoided it.

Under the Common Rule, federally-supported activities involving human participants are presumptively required to undergo prospective ethics review if they are “designed to develop or contribute to generalizable knowledge.” However, the “generalizable knowledge” standard is inherently ambiguous; moreover, it is both over- and under-inclusive of the type of activities that warrant prospective ethical oversight. Rather than conditioning prospective ethics review on an ethically irrelevant criterion like the generalizable knowledge standard, this article proposes that prior ethics review should be required when some (...) individuals are exposed to greater-than-minimal risks for the potential benefit of others, at least when the activity in question is conducted or supported by federal agencies. Under such an approach, the fact that an activity constitutes research would be neither necessary nor sufficient to trigger prospective ethical oversight. (shrink)

If moral responsibility requires uncaused action, as I believe, and if a reasons explanation of an action must be a causal explanation, as many philosophers of action suppose, then it follows that our responsible actions are ones we do for no reason, which is preposterous. In previous work I have argued against the second premise of this deduction, claiming that the statement that a person did A in order to satisfy their desire D will be true if the person, while (...) doing A, intended of that action that it contribute to satisfying their desire D, a condition that does not entail any causal connection between the explaining desire and the explained action. This claim has received trenchant criticism from Randolph Clarke. The main part of the present paper responds to Clarke’s latest objections. The rest of the paper addresses another worry about my account : does my non-causal sufficient condition hold as widely as it needs to if responsible, uncaused actions are as widespread as we would like to think? (shrink)

The article is a reappraisal of the requirement of maximal specificity (RMS) proposed by the author as a means of avoiding "ambiguity" in probabilistic explanation. The author argues that RMS is not, as he had held in one earlier publication, a rough substitute for the requirement of total evidence, but is independent of it and has quite a different rationale. A group of recent objections to RMS is answered by stressing that the statistical generalizations invoked in probabilistic explanations must be (...) lawlike, and by arguing that predicates fit for occurrence in lawlike statistical probability statements must meet two conditions, at least one of which is violated in each of the counterexamples adduced in the objections. These considerations suggest the conception that probabilistic-statistical laws concern the long-run frequency of some characteristic within a reference class as characterized by some particular "description" or predicate expression, and that replacement of such a description by a coextensive one may turn a statement that is lawlike into another that is not. Finally, to repair a defect noted by Grandy, the author's earlier formulation of RMS is replaced by a modified version. (shrink)

Jaegwon Kim, and others, have recently posed a powerful challenge to both emergentism and nom-reductive physicalism by providing arguments that these positions are committed to an untenable combination of both ‘upward’ and ‘dounward’ determination. In section 1, I illuminate how the nature of the realization relation underlies such skeptical arguments However, in section 2, I suggest that such conclusions involve a confusion between the implications of physicalism and those of a related thesis the ‘Completeness of Physics' (Co?) I show that (...) the truth of CoP poses a very serious obstacle to realized properties being efficacious in a physicalist universe and suggest that abandoning CoP offers hope for defending non-reductive physicalism. I then formulate a schema for a physicalist metaphysics, in section 3, which rejects CoP. This scenario is one where microphysical properties have a few conditional powers that they contribute to individuals when they realize certain properties In such a situation, I argue, though physicalism holds true there is still plausibly both ‘upward’ and ‘downward’ determination, where the latter is crucially an underappreciated form of determination I temn 'non- causal'. Ultimately, I conclude that this metaphysical schema offers a coherent account of Strongly emergent properties that preserves the truth of NRP albeit, in a form that is purged of any commitment to CoP. Finally, in section: 4, I carefully explore which of Kim's assumptions and arguments this metaphysics undermines. (shrink)