We present several new studies focusing on “salience effects”—the decreased tendency to attribute knowledge to someone when an unrealized possibility of error has been made salient in a given conversational context. These studies suggest a complicated picture of epistemic universalism: there may be structural universals, universal epistemic parameters that influence epistemic intuitions, but that these parameters vary in such a way that epistemic intuitions, in either their strength or propositional content, can display patterns of genuine cross-cultural diversity.

In this paper, I argue that the certainty about the wrongness of killing must not be considered as a universal, but as a local one. Initially, I show that there exist communities in which the wrongness of killing innocents is not a moral certainty and that this kind of case cannot be justified by arguing that such people are psychopaths. Lastly, I argue that universal certainties do not admit of exceptions: thus, the fact that some exceptional (...) cases affect the certainty that killing innocents is wrong, leads me to conclude that it is a local certainty. (shrink)

Rich with historical and cultural value, these works are published unaltered from the original University of Minnesota Press editions.

We ordinarily assume that we have reliable knowledge of our immediate surroundings, so much so that almost all the time we entrust our lives to the truth of what we take ourselves to know, without a moment’s thought. But if, as Karl Popper and others have maintained, all our knowledge is conjectural, then this habitual assumption that our common sense knowledge of our environment is secure and trustworthy would seem to be an illusion. Popper’s philosophy of science, in particular, fails (...) to do justice to the distinction we ordinarily draw between secure knowledge and mere conjecture. But Popper’s philosophy of science, in particular his attempted solution to the problem of induction, is defective. It fails to take into account that physics, in only accepting unified theories, even though endlessly empirically more successful disunified rivals are always available, makes the persistent metaphysical assumption that all disunified theories are false. Once this point is acknowledged, it becomes clear that a new conception of scientific method is required which sees science as making a hierarchy of metaphysical assumptions concerning the comprehensibility and knowability of the universe. This provides a framework of relatively unproblematic assumptions and associated methods of science within which much more problematic assumptions and associated methods can be critically assessed and improved. This hierarchical view seems at first to intensify the problem of distinguishing certainty from conjecture, in that it emphasizes that scientific knowledge, and even humble common sense knowledge, contain usually unacknowledged cosmological conjectures. But actually it explicates the basis we have for drawing the distinction between trustworthy knowledge and mere conjecture, and even goes some way towards providing a rationale for this distinction, in so far as one exists. (shrink)

Philosophical Investigations, Volume 45, Issue 1, Page 77-90, January 2022.

I consider the relationship between the notion of certainty and the notion of a form of life. There are circumstances under which a feeling of certainty may become the ground for adopting a certain form of life. The forms of life I have in mind are those with a formal orientation towards the realization of the (morally) good for its own sake. The article proceeds in three steps: First I consider Luther’s certainty of salvation as a kind (...) of inaugural (theological) reflection on what will be called immediate certainty as the basis for a form of life aiming at the realization of the morally good for its own sake. With reference to Kierkegaard’s “Either-Or” I then try to show that such an immediate certainty can also be considered as the ground of an ethical form of life without religious implications. With the help of contemporary cognitive psychology I will finally propose an explanation of such a certainty as one that we experience because of our universal cognitive and conative constitution. The three steps amount to a universalization and naturalization of Luther’s certainty of salvation. (shrink)

Mathematical and philosophical Newton Content Type Journal Article Pages 1-10 DOI 10.1007/s11016-010-9520-2 Authors Steffen Ducheyne, Centre for Logic and Philosophy of Science, Ghent University, Blandijnberg 2, 9000 Ghent, Belgium Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

Annalisa Coliva (Int J Study Skept 10(3–4):346–366, 2020) asks, “Are there mathematical hinges?” I argue here, against Coliva’s own conclusion, that there are. I further claim that this affirmative answer allows a case to be made for taking the concept of a hinge to be a useful and general-purpose tool for studying mathematical practice in its real complexity. Seeing how Wittgenstein can, and why he would, countenance mathematical hinges additionally gives us a deeper understanding of some of his latest thoughts (...) on mathematics. For example, a view of how mathematical hinges relate to Wittgenstein’s well-known river-bed analogy enables us to see how his way of thinking about mathematics can account nicely for a “dynamics of change” within mathematical research—something his philosophy of mathematics has been accused of missing (e.g., by Robert Ackermann (Wittgenstein’s city, The University of Massachusetts Press, Amherst, 1988) and Mark Wilson (Wandering significance: an essay on conceptual behavior, Oxford University Press, Oxford, 2006). Finally, the perspective on mathematical hinges ultimately arrived at will be seen to provide us with illuminating examples of how our conceptual choices and theories can be ungrounded but nevertheless the right ones (in a sense to be explained). (shrink)

[Time, the fundamental dimension of our existence, has fascinated artists, philosophers, and scientists of every culture and every century. All of us can remember a moment as a child when time became a personal reality, when we realized what a "year" was, or asked ourselves when "now" happened. Common sense says time moves forward, never backward, from cradle to grave. Nevertheless, Einstein said that time is an illusion. Nature's laws, as he and Newton defined them, describe a timeless, deterministic universe (...) within which we can make predictions with complete certainty. In effect, these great physicists contended that time is reversible and thus meaningless. (shrink)

After Certainty: A History of Our Epistemic Ideals and Illusions, by PasnauRobert. New York, NY: Oxford University Press, 2017. Pp. 384.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Incomprehensible Certainty: Metaphysics and Hermeneutics of the Image by Thomas PfauThomas ZingelmannPFAU, Thomas. Incomprehensible Certainty: Metaphysics and Hermeneutics of the Image. Notre Dame, Ind.: University of Notre Dame Press, 2022. xxiii + 785 pp. Cloth, $80.00Thomas Pfau reconstructs one of the most traditional and possibly most decisive philosophical debates, [End Page 559] namely, the one about the form and function of appearance (Schein). This debate is (...) taken up on the basis of the concept of image. This means that Pfau concentrates historically as well as systematically on a specific topic within this debate. The book is divided into two major sections.In the first section, Pfau examines how the history of the metaphysics and theology of the image develops, starting with Plato in the first chapter. The basic idea in this section is that the image has a crucial epistemic role in the metaphysical and theological systems of the authors addressed. Here Pfau shows that Plato, at the latest in the Sophist, develops a theory of images that revalues appearance contrary to the assumptions in the Republic. Chapter 1 is about the mediation of unity and multiplicity, as it is also shown in Plotinus. Chapter 2 attempts to show how the Byzantine icon embodies the conviction that the invisible truth of the visual world can be revealed only through images. Pfau's demonstration of various epistemic dimensions of the image then begins with chapter 3: the eschatological vision from Augustine to Bonaventure to Julian of Norwich. Chapter 4, the last of the first section, reconstructs Nicholas of Cusa's position, which attempts to understand mystical visions mediated by images of Christ.The second section examines how the metaphysics of the image—in the sense of an epistemology, which tries to establish ultimate justifications—nevertheless persists and even evolves despite two crucial switches in philosophy. On the one hand, this concerns philosophy that subordinates the visual to the abstract (for example, Hegel) and, on the other, the supposedly nonmetaphysical status of the image in the developing natural sciences. Chapter 5 then attempts to show, through Goethe's botanical investigations and reflections, how, despite the establishment of the natural sciences, Goethe attempts to defend intuition as a scientific method and appearance as a scientific object of investigation. This position is then pursued historically in chapter 6, through the work of Lyell, Darwin, and Ruskin, where the visible is understood as the connecting point of the sciences in general. Gerard Manley Hopkins is then identified in chapter 7 as representing a position that combines theological with proto-phenomenological arguments to highlight the epistemic value of images. The last chapter then deals with decisive developments at the beginning of the twentieth century. In phenomenology (Husserl), painting (Cézanne), and poetry (Rilke), a conception develops that epistemically valorizes sensual and intuitive experience.Generally speaking, Pfau attempts to trace historically what arguments and positions have been developed on the relationship between image and knowledge. His work is based on the conviction that the image is the basis for human orientation in the world and is therefore of great epistemological value. Of outstanding importance for his question is that the epistemological value of images is not to be located in the properties of images, that is, an ontology of the image; rather, Pfau is interested in those positions that reflect on the relationship between knowledge and [End Page 560] experience of images. While clarifying the ontological status of images remains important, the epistemological status of images—what role the experience and usage of images has for humans—is in the foreground. Pfau reconstructs positions that hold that the pictorial is a medium of knowledge. He puts forward the thesis that there is a tradition that is of the opinion that in and through the medium of the image—and this closes the arc to the Schein-debate—being can be experienced by man. In other words, the invisible is to become recognizable through the visible. Of particular importance is his reading of the late Platonic dialogues: While appearance and being are still thought of as distinct in these dialogues, they are not opposed, in the sense of an epistemic opposition. Plato's... (shrink)

Wittgenstein takes Moore to task for confusing knowledge with the non‐epistemic brand of conviction that logically underlies it, and he drives a categorial wedge between them: 'knowledge and certainty belong to different categories'. However basic knowledge is understood, it must be capable of standing in logical relations to whatever judgements rest on it. For example, it must be capable of being consistent or inconsistent with them. But this means that even basic knowledge must involve propositional content. In certain circumstances (...) a man cannot make a mistake. If Moore were to pronounce the opposite of those propositions which he declares certain, we should not just not share his opinion: we should regard him as demented. In thus logically closing the door to doubt and mistake as regards our basic certainties, Wittgenstein closes the door to universal skepticism, and thereby also to the contextualism Michael Williams attributes to Wittgenstein. (shrink)

Pleasants argues in favour of the idea of basic moral certainties. Analogous to Wittgenstein’s basic empirical certainties, basic moral certainties are universal certainties that cannot be justified, asserted or meaningfully doubted. They are a fundamental condition of morality as such, thus allowing us to carry out other moral operations. Brice and Rummens have criticized Pleasants’ proposal, arguing that basic moral certainties are significantly disanalogous to Wittgenstein’s basic empirical certainties. Brice argues that Pleasants does not differentiate between a bottom-up and (...) a top-down approach to basic certainties nor does he acknowledge the difference that this distinction constitutes in the foundational role of a certainty. Meanwhile, Rummens claims that basic moral certainties are not universal. Conversely, they are moral hinges embedded in certain culturally and historically specific moral language-games. Pleasants has provided a response to these criticisms, while defending the universality and naturalism of basic moral certainties. In this article, I single out the problems in Pleasants’ response to the criticisms introduced by Brice and Rummens. I argue that Pleasants must present further arguments in order to demonstrate that basic moral certainties are analogous to basic empirical certainties. I also argue that the existence of basic moral certainties that coalesce with numerous exceptions and suspensions generates significant problems in Pleasants’ proposal. I advance two cases regarding euthanasia that meaningfully challenge and doubt Pleasants’ central basic moral certainty: the wrongness of killing innocent human beings. Additionally, both cases are employed to meaningfully doubt and challenge Pleasants’ basic moral certainty of the badness of death. (shrink)

WilsonMark. _ Innovation and Certainty. _ Cambridge Elements in the Philosophy of Mathematics. Cambridge University Press, 2020. Pp. 74. ISBN: 978-1-108-74229-0 ; 978-1-108-59290-1. doi.org/10.1017/9781108592901.

Objectives: The objective of this study is to investigate the relationship between a physician’s subjective mortality prediction and the level of confidence with which that mortality prediction is made.Design and participants: The study is a prospective cohort of patients less than 18 years of age admitted to a tertiary Paediatric Intensive Care Unit at a University Children’s Hospital with a minimum length of ICU stay of 10 h. Paediatric ICU attending physicians and fellows provided mortality risk predictions and the level (...) of confidence associated with these predictions on consecutive patients at the time of multidisciplinary rounds within 24 hours of admission to the paediatric ICU. Median confidence levels were compared across different ranges of mortality risk predictions.Results: Data were collected on 642 of 713 eligible patients . Mortality predictions greater than 5% and less than 95% were made with significantly less confidence than those predictions 95%. Experience was associated with greater confidence in prognostication.Conclusions: We conclude that a physician’s subjective mortality prediction may be dependent on the level of confidence in the prognosis; that is, a physician less confident in his or her prognosis is more likely to state an intermediate survival prediction. Measuring the level of confidence associated with mortality risk predictions may therefore be important because different levels of confidence may translate into differences in a physician’s therapeutic plans and their assessment of the patient’s future. (shrink)

The University of Michigan conference “Where Religion, Policy, and Bioethics Meet: An Interdisciplinary Conference on Islamic Bioethics and End-of-Life Care” in April 2011 addressed the issue of brain death as the prototype for a discourse that would reflect the emergence of Islamic bioethics as a formal field of study. In considering the issue of brain death, various Muslim legal experts have raised concerns over the lack of certainty in the scientific criteria as applied to the definition and diagnosis of (...) brain death by the medical community. In contrast, the medical community at large has not required absolute certainty in its process, but has sought to eliminate doubt through cumulative diagnostic modalities and supportive scientific evidence. This has recently become a principal model, with increased interest in data analysis and evidence-based medicine with the intent to analyze and ultimately improve outcomes. Islamic law has also long employed a systematic methodology with the goal of eliminating doubt from rulings regarding the question of certainty. While ample criticism of the scientific criteria of brain death (Harvard criteria) by traditional legal sources now exists, an analysis of the legal process in assessing brain death, geared toward informing the clinician’s perspective on the issue, is lacking. In this article, we explore the role of certainty in the diagnostic modalities used to establish diagnoses of brain death in current medical practice. We further examine the Islamic jurisprudential approach vis-à-vis the concept of certainty (yaqīn). Finally, we contrast the two at times divergent philosophies and consider what each perspective may contribute to the global discourse on brain death, understanding that the interdependence that exists between the theological, juridical, ethical, and medical/scientific fields necessitates an open discussion and active collaboration between all parties. We hope that this article serves to continue the discourse that was successfully begun by this initial interdisciplinary endeavor at the University of Michigan. (shrink)

This paper is an attempt to lay out a meta‐ethical position that is inspired by the framework of Wittgenstein's later philosophy. To achieve this goal, this paper is divided into two parts. First, I explore recent attempts to tie Wittgenstein's epistemology in On Certainty to moral epistemology. I argue that there can be a meaningful parallel drawn between the epistemic certainties discussed in On Certainty and what I consider to be moral certainties. These moral certainties are unjustified fundamental (...) moral attitudes that underlie our moral practices. Then, I show how the debate over moral certainty has branched into two directions. One direction presents the concept of moral certainty as a naturalistic concept. On this reading, moral certainties transcend time and place since they are rooted in our natural tendencies to act or not act in certain ways. The other direction presents moral certainty as a distinctly relativistic concept. On this reading, we have our moral certainties because we belong to communities that agree on these certainties. In the second section, I argue that we have both natural, universal certainties and localized, relative certainties. I also argue that our localized certainties are constrained by non‐moral facts about ourselves and about the world. To make this argument, I rely on Wittgenstein's concept of “general facts of nature.” The result of the paper is a meta‐ethical position that can be located in between moral relativism and moral realism. (shrink)

What is ‘certainty’ in our everyday life and work? AI changing what it means to ‘be certain’. For example, when we engage with others and are doing our work, we make judgments in which we ‘trust our instinct’. Are we still able to do so if we engage with the ‘certainty’ of the machine? How is ‘being certain’ in ‘dialogue’ affected by our conceptions of what it means to be human in interaction with the ‘machine’, and consequent distinctions (...) between body and mind? Descartes first likened the human body to a machine (albeit a machine created by God) and endowed reason as being a transcendent universal instrument. La Mettrie proposed that language and culture separates humans from ‘animals’. However, in Diderot’s writing, ‘knowledge’ is seen as embodied, coming from our senses and language, and where gesture and rhythm evolve in practice. For D’Alembert, human ‘instinct’ is a skill, a learnt practice, and Rousseau believes that human certainty is something that cannot be measured. These questionings of the dichotomies of body and mind and human and animal, that relate practice and knowledge, also question the place and meaning of ‘rules’ of engaged practice. For Wittgenstein, one learns to make judgments through personal experience, ‘rules in practice’, whereby language is necessarily culturally situated and embodied, and calculation and Judgement are part of each other. (shrink)

I am grateful to Peter Achinstein, Don Howard, and the other participants at the conference, 'The Role of Experiments in Scientific Changer', Virginia Polytechnic Institute and State University, 30 March to 1 April, 1990, for helpful discussion, and especially to Ron Laymon for his discussion comments presented at the conference on an earlier version of this paper.

Between Probability and Certainty: What Justifies Belief, by Martin Smith. Oxford: Oxford University Press, 2016. Pp. xi + 213.

In lieu of an abstract, here is a brief excerpt of the content:388 HISTORY OF PHILOSOPHY Beyond the Edge of Certainty: Essays in Contemporary Science and Philosophy. Edited with an Introduction by Robert G. Colodny. (Englewood Cliffs, New Jersey: Prentice-Hall, Inc., 1965.) This is the second volume of lectures on various current topics in the philosophy of the physical, biological, and social sciences which has been published under the auspices of the Center for Philosophy of Science at the University (...) of Pittsburg. Volume I, Frontiers o] Science and Philosophy, also edited by Professor Colodny, appeared in 1962. Five of the seven lectures contained in this volume treat topics which fall within the philosophy of physics. The persistent student who is without a technical background in either logic or physics will find these for the most part quite readable. Considering this, it is worthy of note that, while the lectures are not of uniform quality in this respect, several problems are treated with sufficient freshness of insight to justify the interest of the philosopher of science as such. Since I cannot discuss all of the lectures, I will restrict my comments, for the most part, to those the significance of which I think I understand best and which deal significantly with some aspect of the history of philosophy. In "Newton's First Law: A Philosopher's Door into Natural Philosophy," Norwood Russell Hanson exhibits what has become a widely accepted analysis of Newton's First Law as a model to be applied to theories in science which must be regarded as, in some sense, true, but which, in principle, are not empirically demonstrable. Briant Ellis, in "The Origin and Nature of Newton's Laws of Motion," deals in a somewhat parallel way with all three of Newton's laws of motion. It is argued that these laws are primarily conceptual in origin. Evidence is marshalled that they were derived from Cartesian physics. That no amount of empirical work could establish or provide support for a principle of natural motion is held by Ellis to be due to the fact that "force" is conceived as something that exists only in order to explain effects. "Since we are at liberty to choose to regard whatever changes or states we please as natural (i.e., as not being effects) it follows that the forces which we should say are operative in nature depend upon the choices we actually make" (65). It would, I think be difficult to show that any one of the points Ellis makes, with the exception of his interesting historical note on the probable origin of Newton's laws of motion, has not previously been made. All, or nearly all, of these points were set forth, at least in outline, for example, by William Werkmeister in A Philosophy o] Science. The approach Ellis makes to his development of the concept of "force," however, is both fresh and incisive and worthy of careful study. In "A Philosopher looks at Quantum Mechanics," Hillary Putnam exhibits the Copenhagen interpretation of quantum mechanics of Bohr and Heisenberg, viewed in historical perspective, as the most adequate of several unsatisfactory theories. He finds the locus of the problem to lie in a suitable definition of "measurement." Noting that Heisenberg's definition (improperly) appeals to the macrocosm conceived in terms of classical mechanics, he seeks to clarify some of the issues that must follow the attempt to define measurement within the context of quantum mechanics. Putnam holds the relative sharpness of macroobservables for Bohr and Heisenberg to be an underived assumption of their theory. Since the quantities of which macro-observables are supposed to be averages are not (in quantum mechanics) required always to exist, this assumption cannot be derived from a plausible definition of macro-observables together with a suitable formulation of the laws of quantum mechanics. Moving from Bohr and Heisenberg's conclusion that measurement requires interaction of a system (or part of a system) measured with respect to an outside system, and that macroobservables do not exist unless measured, measurement for quantum mechanics is defined as "an interaction in which a system A (the 'measured' system), which was previously isolated, interacts with a system B (the 'measuring' system) in such a way as to cause a... (shrink)

Pleasants has developed the idea of basic moral certainties. Analogous to Wittgenstein's basic empirical certainties, they are best described as universal moral certainties which are natural and nonpropositional, and show unreflectively in the way we act. A clear-cut example is the wrongness of killing innocent human beings. Philosophers have levelled three damaging criticisms against Pleasants' proposal by (i) offering counterexamples to his proposed example of moral certainty, (ii) highlighting some disanalogies between moral certainties and Wittgenstein's basic empirical certainties (...) and, lastly, (iii) showing the lack of arguments and evidence offered by Pleasants to substantiate the claim that moral certainties are natural. To address these criticisms, Laves has revised Pleasants' proposal by providing numerous amendments. In this paper, I develop some concerns about Laves' proposed amendments and indicate that, at present, they are unable to fully overcome the criticisms levelled against the idea of basic moral certainty. Whether Laves' proposal can escape these troubles demands further attention. (shrink)

© The Author 2017. Published by Oxford University Press on behalf of The Analysis Trust. All rights reserved. For Permissions, please email: [email protected] traditional picture of justification affirms the following: a belief is justified when it is sufficiently likely on one’s evidence. Over and against this well-received conception, Smith’s Between Probability and Certainty: What Justifies Belief develops an alternative: the normic support conception of justification. While likelihoods constitute the core feature of the risk minimization picture, the normic support conception (...) replaces likelihoods with normalcy. The book offers a clear discussion of the shortcomings of the risk minimalization conception combined with an ambitious defence of the normic support conception.‘Normality’, according to Smith, is tied to our inclinations to look for further explanations: abnormal events require an explanation; normal events carry no such demand. For example, it is normal for someone to win the lottery. When we hear that... (shrink)

According to Danièle Moyal-Sharrock, Wittgenstein’s On Certainty presents a theory of hinges, and hinges have a role to play in a foundationalist epistemology (2013). Michael Williams (2005) and Annalisa Coliva (2013 ) have claimed that the hinges are not suitable to play such a role as they are not shared universally. Moyal-Sharrock has replied that a subset of the hinges is suitable to play such a role: the “universal” hinges. I argue that for Moyal-Sharrock’s reply to be sustained, (...) she must construe the set of universal hinges much more narrowly than she does currently. For instance, Moyal-Sharrock claims that “I have a brain” is a universal hinge, which consigns people who know nothing about brains to stand outside the bounds of sense. I also provide a novel way of thinking about the universal hinges, which I argue is better textually motivated than Moyal-Sharrock’s own way, and which provides a set of hinges more suitable to play a role in foundationalist epistemology. (shrink)

In April 1939, G. E. Moore read a paper to the Cambridge University Moral Science Club entitled ‘Certainty’. In it, amongst other things, Moore made the claims that: the phrase ‘it is certain’ could be used with sense-experience-statements, such as ‘I have a pain’, to make statements such as ‘It is certain that I have a pain’; and that sense-experience-statements can be said to be certain in the same sense as some material-thing-statements can be — namely in the sense (...) that they can be safely counted on. When Moore later read his paper to Wittgenstein, Wittgenstein took violent exception to it, and the two entered into a heated exchange. The only known notes of this exchange are a previously unpublished verbatim record of part of it, taken by Norman Malcolm. This paper is an edition of Malcolm’s notes. These notes are valuable for both philosophical and scholarly reasons. They give us a glimpse of a sustained exchange between Wittgenstein and a real-life interlocutor; they contain a defence by Wittgenstein of the idea that a word’s use can illuminate its meaning; and they provide evidence of Wittgenstein’s philosophical engagement with the topic of certainty, and with Moore’s thought on it, long before he began to write the notes which make up On Certainty, in 1949. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:388 HISTORY OF PHILOSOPHY Beyond the Edge of Certainty: Essays in Contemporary Science and Philosophy. Edited with an Introduction by Robert G. Colodny. (Englewood Cliffs, New Jersey: Prentice-Hall, Inc., 1965.) This is the second volume of lectures on various current topics in the philosophy of the physical, biological, and social sciences which has been published under the auspices of the Center for Philosophy of Science at the University (...) of Pittsburg. Volume I, Frontiers o] Science and Philosophy, also edited by Professor Colodny, appeared in 1962. Five of the seven lectures contained in this volume treat topics which fall within the philosophy of physics. The persistent student who is without a technical background in either logic or physics will find these for the most part quite readable. Considering this, it is worthy of note that, while the lectures are not of uniform quality in this respect, several problems are treated with sufficient freshness of insight to justify the interest of the philosopher of science as such. Since I cannot discuss all of the lectures, I will restrict my comments, for the most part, to those the significance of which I think I understand best and which deal significantly with some aspect of the history of philosophy. In "Newton's First Law: A Philosopher's Door into Natural Philosophy," Norwood Russell Hanson exhibits what has become a widely accepted analysis of Newton's First Law as a model to be applied to theories in science which must be regarded as, in some sense, true, but which, in principle, are not empirically demonstrable. Briant Ellis, in "The Origin and Nature of Newton's Laws of Motion," deals in a somewhat parallel way with all three of Newton's laws of motion. It is argued that these laws are primarily conceptual in origin. Evidence is marshalled that they were derived from Cartesian physics. That no amount of empirical work could establish or provide support for a principle of natural motion is held by Ellis to be due to the fact that "force" is conceived as something that exists only in order to explain effects. "Since we are at liberty to choose to regard whatever changes or states we please as natural (i.e., as not being effects) it follows that the forces which we should say are operative in nature depend upon the choices we actually make" (65). It would, I think be difficult to show that any one of the points Ellis makes, with the exception of his interesting historical note on the probable origin of Newton's laws of motion, has not previously been made. All, or nearly all, of these points were set forth, at least in outline, for example, by William Werkmeister in A Philosophy o] Science. The approach Ellis makes to his development of the concept of "force," however, is both fresh and incisive and worthy of careful study. In "A Philosopher looks at Quantum Mechanics," Hillary Putnam exhibits the Copenhagen interpretation of quantum mechanics of Bohr and Heisenberg, viewed in historical perspective, as the most adequate of several unsatisfactory theories. He finds the locus of the problem to lie in a suitable definition of "measurement." Noting that Heisenberg's definition (improperly) appeals to the macrocosm conceived in terms of classical mechanics, he seeks to clarify some of the issues that must follow the attempt to define measurement within the context of quantum mechanics. Putnam holds the relative sharpness of macroobservables for Bohr and Heisenberg to be an underived assumption of their theory. Since the quantities of which macro-observables are supposed to be averages are not (in quantum mechanics) required always to exist, this assumption cannot be derived from a plausible definition of macro-observables together with a suitable formulation of the laws of quantum mechanics. Moving from Bohr and Heisenberg's conclusion that measurement requires interaction of a system (or part of a system) measured with respect to an outside system, and that macroobservables do not exist unless measured, measurement for quantum mechanics is defined as "an interaction in which a system A (the 'measured' system), which was previously isolated, interacts with a system B (the 'measuring' system) in such a way as to cause a... (shrink)

According to Danièle Moyal-Sharrock, Wittgenstein’s On Certainty presents a theory of hinges, and hinges have a role to play in a foundationalist epistemology. Williams and Coliva have claimed that the hinges are not suitable to play such a role as they are not shared universally. Moyal-Sharrock has replied that a subset of the hinges is suitable to play such a role: the “universal” hinges, an account of which she developed in her 2004 book Understanding on Certainty. I (...) argue that for Moyal-Sharrock’s reply to be sustained, she must construe the set of universal hinges much more narrowly than she does currently. For instance, Moyal-Sharrock claims that “I have a brain” is a universal hinge, which consigns people who know nothing about brains to stand outside the bounds of sense. I also provide a novel way of thinking about the universal hinges, which I argue is better textually motivated than Moyal-Sharrock’s own way, and which provides a set of hinges more suitable to play a role in foundationalist epistemology. (shrink)

Before there was the digital divide there was the analog divide– and universal service was the attempt to close that analogdivide. Universal service is becoming ever more complex in terms ofregulatory design as it becomes the digital divide. In order to evaluatethe promise of the next generation Internet with respect to the digitaldivide this work looks backwards as well as forwards in time. Byevaluating why previous universal service mechanisms failed andsucceeded this work identifies specific characteristics ofcommunications systems (...) – in particular in billing and managinguncertainty – and argues that these characteristics underliesuccess or failure in terms of technological ubiquity. Developing a setof characteristics of services rather than a set of services is afundamental break with the tradition of universal service. In fact, theimplications of our proposal is that basic characteristics in theoffering of the service rather than the absolute price are critical toclose the digital divide: certainty of total charge, ability to avoiddeposits or disconnection via best effort service, and payer-basedcontrol of all charges. While all of these principles sound obvious infact none of these hold in the telephony network. Universal service hasevolved from common carriage (serve all with no discrimination) to aright to basic services (100% penetration). Universal service isnow discussed as the digital divide, as the access to information asopposed to services becomes increasingly critical. However, we arediscussing in this paper access to the bits and the network rather thanaccess to the information (or intellectual property) once connected. Theprovision of universal service is seen as a technical problem only in thatthe technology costs money – universal service debates have longbeen the domain of economists. Yet the design of protocols has been thedomain of engineers, the building of systems the corporate domain, andthe discussion of equity the interest of ethicists. The design ofprotocols can define the parameters of the corporate decision-makers,the variables of the economist, and the questions for the ethicist. Thedesign decisions made at the fundamental levels can make communicationsequity more or less likely. In this work I focus on the design ofprotocols for the next generation Internet, protocols which willfundamentally change the best-effort nature of Internet services.Building on the economic and ethnographic work of others I argue thatthe effects of protocols adoption on universal service can be predictedto some degree. By examination of past and current technologies Iexamine a set of technical mechanisms to determine how such mechanismsmight harm or enhance universal service. I define each mechanism (e.g.denial of entry) and offer observations about each particularmechanism''s implicit pricing assumptions. I close with a discussion ofinterest to ethicists and regulators on evaluating communicationsprotocols with respect to universal access. Protocols for developingmultiple qualities of service for packet-switched networks have focusedon economic efficiency (e.g. Mackie-Mason, 1995; Choi, Stahl &Winston, 1997; Shapiro & Varian, 1998), billing to encouragewidespread adoption of network innovations (e.g. Xie & Sirbu, 1985)and billing in a manner consistent with the underlying network (e.g.Clark, 1996). Here we examine a set of protocols which include varyingquality of service mechanisms with respect to the compatibility of theprotocols with universal access. (shrink)

The modern era was dominated by conflicts between claims to certainty about justice and denials that certainty is warranted. The purpose of this book is to develop a postmodern alternative to both philosophies, one which is universal without being absolutist. The approach is _dialectical_ in Plato's sense of that term. Dialectic is both necessary and sufficient for the theoretical and the practical aspects of living. The primary symbol in this book is the Athenian Socrates who spent his (...) days in the Agora and his evenings in the houses of his friends, the active professionals of the world's first democracy. His questions were unabashedly philosophical, concerned with the most urgent matters. What is worth living for? What is worth dying for? Who is best suited to rule in the state? How should young people be educated? The nature of justice is closely connected with other questions of value, so the discussion freely moves from that central focus to related matters with the primary goal of developing a dialectical philosophy that is both applicable to life and open to all. _Universal Justice_ is concerned with _how_ to think about justice rather than _what_ to think about justice. (shrink)