For sharp quantum observables the following facts hold: (i) if we have a collection of sharp observables and each pair of them is jointly measurable, then they are jointly measurable all together; (ii) if two sharp observables are jointly measurable, then their joint observable is unique and it gives the greatest lower bound for the effects corresponding to the observables; (iii) if we have two sharp observables and their every possible two outcome partitionings are jointly measurable, then the observables themselves (...) are jointly measurable. We show that, in general, these properties do not hold. Also some possible candidates which would accompany joint measurability and generalize these apparently useful properties are discussed. (shrink)

In this systematic study, Professor Achinstein analyzes such concepts as definitions, theories, and models, and contrasts his view with currently held positions that he finds inadequate.

This anthology presents work on major topics surrounding the concept of evidence as employed in the empirical sciences. Focusing on the "classificatory" concept of evidence rather than the quantitative "degree of confirmation," the selections include Carl G. Hempel's satisfaction definition, R.B. Braithwaite's hypothetic-deductive view, N.R. Hanson's account of retroduction, Nelson Goodman's entrenchment theory, probability definitions discussed by Rudolf Carnap and Wesley Salmon, Clark Glymour's bootstrap theory, and a view of Achinstein's that combines probability and explanation.

We take up the challenge of developing an international network with capacity to survey the world's scientists on an ongoing basis, providing rich datasets regarding the opinions of scientists and scientific sub-communities, both at a time and also over time. The novel methodology employed sees local coordinators, at each institution in the network, sending survey invitation emails internally to scientists at their home institution. The emails link to a ‘10 second survey’, where the participant is presented with a single statement (...) to consider, and a standard five point Likert scale. In June 2023, a group of 30 philosophers and social scientists invited 20,085 scientists across 30 institutions in 12 countries to participate, gathering 6,807 responses to the statement 'Science has put it beyond reasonable doubt that COVID-19 is caused by a virus'. The study demonstrates that it is possible to establish a global network to quickly ascertain scientific opinion on a large international scale, with high response rate, low opt-out rate, and in a way that allows for significant (perhaps indefinite) repeatability. Measuring scientific opinion in this new way would be a valuable complement to currently available approaches, potentially informing policy decisions and public understanding across diverse fields. (shrink)

Do perceptual states necessarily constitute evidence epistemically supporting corresponding perceptual beliefs? Susanna Schellenberg thinks so. She argues that perceptual states, veridical or not, necessarily provide (or constitute) a kind of evidence (for the existence of the truth-maker) supporting corresponding perceptual beliefs. She uses “phenomenal evidence” as a label for this kind of evidence and calls her argument “The Phenomenal Evidence Argument.” Having introduced her project, we offer a reconstruction of Schellenberg’s argument (Sect. 2 ). A key premise has it that, (...) necessarily, for items with a function, fulfillment of the function (the good case) is explanatorily and metaphysically prior to function failure (the bad case). We suggest that the etiological theory of functions renders this key premise plausible (Sect. 3 ). However, Schellenberg rejects the etiological theory of functions (Sect. 4 ) and likewise the idea that the epistemic or warranting force of perceptual states is grounded in their being reliably linked to veridical perception (Sect. 5 ). But then what supports the key premise? Schellenberg argues that accurate perception is a part of the _nature_ of perceptual capacities because the nature of perceptual capacities is explained in terms of their function, and their function is to represent accurately (Sect. 6 ). We suggest that Schellenberg is committed to an understanding of priority which doesn’t require any _actual_ good cases—just possible ones (Sect. 7 ). This reading, we argue, is too weak to support the key premise (Sect. 8 ). Given Schellenberg’s commitments, it is not necessarily the case that perceptual states are evidence for a corresponding perceptual belief. Before concluding we discuss an overgeneralization objection to Schellenberg’s argument (Sect. 9 ). (shrink)

I consider and reject William Whewell's attack on the inductivism of Isaac Newton and John Stuart Mill, as well as John Norton's attack on any universal system of inductive rules. I also explain how a system of inductive rules of the sort proposed by Newton and Mill should be understood.

Confirmation theorists seek to define a function that will take into account the various factors relevant in determining the degree to which an hypothesis is confirmed by its evidence. Among confirmation theorists, only Rudolf Carnap has constructed a system which purports to consider factors in addition to the number of instances, viz. the variety manifested by the instances and the amount of analogy between the instances. It is the purpose of this paper to examine the problem which these additional factors (...) raise for confirmation theory, and to prove that, despite Carnap's claim, no confirmation function satisfying the requirements he has specified can take account of variety and analogy. This result is first proved for a special case, and then, in a subsequent section, is generalized through the introduction of a theorem (the proof of which is given in Appendix I). In the final section of the paper it is shown that, contrary to a claim which Carnap has made, not even the concept of the "logical width" of a predicate will enable confirmation functions satisfying his requirements to take adequate account of analogies between instances. (shrink)

Generic statements play a crucial role in concept learning, communication and education. Despite many efforts, the semantics of generics remain a controversial issue, as they do not seem to fit our standard theories of meaning. In this article, we attempt to shed light on this problem by focusing on how these sentences function in reasoning. Drawing on a distinction between property and diagnostic generics, we defend three theses: First, property generics are not about facts but express relations between concepts. Second, (...) generics play an important role in everyday reasoning by interacting with our expectations about the world. Third, diagnostic generics emphasise properties that separate the category in the generics from other categories in the same contrast class. We use the theory of conceptual spaces to advance measures of typicality and diagnosticity capable of modelling different aspects of generics and apply them to the modifier effect and the inverse conjunction fallacy. Finally, we discuss the pragmatics of generics. (shrink)

Newton deplored speculation in science, Einstein reveled in it. What exactly are scientific speculations? Are they ever legitimate? Are they subject to constraints? This book defends a pragmatic approach to these issues and applies it to speculations within science and to speculations about science.

There has been a flurry of recent work on the cognitive neuroscience of curiosity. But everyone in the field offers definitions of curiosity that are meta-cognitive in nature. Curiosity is said to be a desire for knowledge, or a motivation to learn about something, and so on. This appears problematic. It either makes it difficult to see how curiosity can properly be attributed to cats and rats (let alone birds and bees), or it commits us to attributing capacities for self-awareness (...) in these creatures for which we lack evidence. The goal of the present article is to offer a re-interpretation of the main findings in the literature: showing how it is possible for creatures to be curious while lacking any conception of their own or others’ minds, while at the same time arguing that there is something that a meta-cognitive conception of curiosity gets right. (shrink)

Recently in this journal Sherrilyn Roush (2004) defends positive relevance as a necessary (albeit not a sufficient) condition for evidence by rejecting two of the counterexamples from my earlier (2001) work. In this reply I argue that Roush's critique is not successful.

: This paper examines the debate in the late 19th and early 20th centuries over the acceptability of atomic and molecular physics. It focuses on three prominent figures: Maxwell, who defended atomic physics, Ostwald, who initially rejected it but changed his mind as a result of experiments by Thomson and Perrin, and Duhem, who never accepted it. Each scientist defended the position he did in the light of strongly held methodological views concerning empirical evidence. The paper critically evaluates each of (...) these methodological positions. (shrink)

We argue that, while Cavendish did express orthodox piety, she is likely to have been read by her contemporaries as heterodox and deistic at best, atheistic at worst. Furthermore, they would have been right: it is seemingly impossible to reconcile her metaphysical and epistemological views with particular providence, miracles, the incarnation and revelation. We proceed by outlining her general metaphysical position (section 1) before looking in some detail at her discussion of immaterial beings (section 2). We then consider the implications (...) of these views for certain orthodox Christian doctrines (section 3). (shrink)

Included is a famous nineteenth-century debate about scientific reasoning between the hypothetico-deductivist William Whewell and the inductivist John Stuart Mill; and an account of the realism-antirealism dispute about unobservables in science, with a consideration of Perrin's argument for the existence of molecules in the early twentieth century.

Many technology ethicists hold that the time has come to articulate _neurorights_: our normative claims vis-à-vis our brains and minds. One such claim is the right to _mental integrity_ (‘MI’). I begin by considering some paradigmatic threats to MI (§1) and how the dominant autonomy-based conception (‘ABC’) of MI attempts to make sense of them (§2). I next consider the objection that the ABC is _overbroad_ in its understanding of what threatens MI and suggest a friendly revision to the ABC (...) that addresses the objection (§3). I then consider a second objection: that the ABC cannot make sense of the MI of the _non-autonomous_. This objection appears fatal even to the revised ABC (§4). On that basis, I develop an alternative conception on which MI is grounded in a plurality of simpler capacities, namely, those for _affect_, _cognition_, and _volition_. Each of these more basic capacities grounds a set of fundamental interests, and they are for that reason worthy of protection even when they do not rise to the level of complexity necessary for autonomy (§5). This yields a fully general theory of MI that accounts for its manifestations in both the autonomous and the non-autonomous. (shrink)

Frederick Kronz constructs interesting examples in an attempt to show deficiencies in my concept of evidence and the advantages in Carnap's positive relevance idea. His discussion raises general questions of importance in developing an adequate account of scientific evidence questions about the relationship between evidence and belief and the role of emphasis in determining evidence. His examples are challenging, but do they work?

Inferentialism is the view that representational content is explained by linguistic or mental states interacting according to inferential rules. Mendelovici's and Bourget's swapping argument against inferentialism shows that rules of inference do not sufficiently constrain content. This paper argues that their argument can be further strengthened so that its conclusion yields that the content and inferential roles are strictly independent. It is then argued that this conclusion is untenable and that the argument, rather than undermining inferentialism, corrodes the model-theoretic foundations (...) of standard philosophical semantics. The paper concludes with some hints towards an alternative semantic paradigm inspired by intuitionistic type-theory that is immune to the swapping argument. (shrink)

ABSTRACTCatholic Christianity possesses a distinctive power, which has remained latent and undertheorised for a long time: the power to adapt itself to cultural traditions. In theology, it has often been seen as accidental, even when it was manifest in practice, especially in local traditions. Since Vatican II, inculturation has been actively encouraged, and new approaches were developed in missiology and ecclesiology. In this article, Christianity’s power of adaptation is presented as central to the ‘salvific event’ itself. Human beings need to (...) be formed by concrete traditions in order to be human. A redemption that would stamp out their attachment to tradition would amount to their destruction. The relative autonomy of traditional life in relation to God, would, so to speak, constitute a problem for God, if he wanted to provide humankind with a divine assistance geared to its real needs. The incarnation, and the founding of a ‘kingdom of heaven’, populated by human beings from different traditions, can... (shrink)

Poellner here offers a comprehensive interpretation of Nietzsche's later ideas on epistemology and metaphysics, drawing extensively not only on his published works but also his voluminous notebooks, largely unpublished in English. He examines Nietzsche's various distinct lines of thought on the traditionally central areas of philosophy and shows in what specific sense Nietzsche, as he himself claimed, might be said to have moved beyond these questions. He pays considerable attention throughout both to the historical context of Nietzsche's writings and to (...) subsequent developments in philosophy--English-language as well as Continental. (shrink)

An enigma for human languages is that children learn to understand words in their mother tongue extremely fast. The cognitive sciences have not been able to fully understand the mechanisms behind this highly efficient learning process. In order to provide at least a partial answer to this problem, I have developed a cognitive model of the semantics of natural language in terms of conceptual spaces. I present a background to conceptual spaces and provide a brief summary of their main features, (...) in particular how it handles learning of concepts. I then apply the model to give a geometric account of the semantics of different word classes. In particular, I propose a “single-domain hypotheses” for the semantics of all word classes except nouns. These hypotheses provide a partial answer to the enigma of how words are learned. Next, a dynamic cognitive model of events is introduced that replaces and extends the function of thematic roles. I apply it to analyze the meanings of different kinds of verbs. I argue that the model also explains some aspects of syntactic structure. In particular, I propose that a sentence typically refers to an event. Some further applications of conceptual spaces are briefly presented. (shrink)

Recent discussions in the history of analytic philosophy have targeted questions about the concept of ‘Analytic Philosophy’ itself. Scholars, such as Glock (2008) and Preston (2004), have argued that ‘Analytic Philosophy’ cannot plausibly be characterised in terms of necessary and sufficient conditions and that other, more pragmatic, approaches must be taken instead. In this paper, we argue that similar questions that have recently emerged about the status of ‘Western Philosophy’ can be informed by these debates in the history of analytic (...) philosophy. Some recent scholars, most notably Platzky Miller (2023) and Cantor (2022), have argued that the concept of ‘Western philosophy’ should be abandoned altogether, due to its incoherence and the role it plays in upholding and perpetuating various exclusionary mechanisms and politically dubious aims. The aim of this paper is to apply the lessons learnt from similar discussions about ‘Analytic Philosophy’ and to build on Platzky Miller’s and Cantor’s innovative proposals. We argue that the term should not be abandoned altogether and that continuing to use it is required for combating exclusions in the history of philosophy. (shrink)

A success-to-truth inference has always been at the heart of scientific realist positions. But all attempts to articulate the inference have met with very significant challenges. This paper reconstructs the evolution of this inference, and brings together a number of qualifications in an attempt to articulate a contemporary success-to-truth inference which is realistic. I argue that this contemporary version of the inference has a chance, at least, of overcoming the historical challenges which have been proffered to date. However, there is (...) a price to pay: the developments which help the realist answer the historical challenges also serve to increase the number of non-historical challenges. (shrink)

We take up the challenge of developing an international network with capacity to survey the world’s scientists on an ongoing basis, providing rich datasets regarding the opinions of scientists and scientific sub-communities, both at a time and also over time. The novel methodology employed sees local coordinators, at each institution in the network, sending survey invitation emails internally to scientists at their home institution. The emails link to a ‘10 second survey’, where the participant is presented with a single statement (...) to consider, and a standard five-point Likert scale. In June 2023, a group of 30 philosophers and social scientists invited 20,085 scientists across 30 institutions in 12 countries to participate, gathering 6,807 responses to the statement Science has put it beyond reasonable doubt that COVID-19 is caused by a virus. The study demonstrates that it is possible to establish a global network to quickly ascertain scientific opinion on a large international scale, with high response rate, low opt-out rate, and in a way that allows for significant (perhaps indefinite) repeatability. Measuring scientific opinion in this new way would be a valuable complement to currently available approaches, potentially informing policy decisions and public understanding across diverse fields. (shrink)

Conceptions of self? management and the labor managed firm have not been well received by economists. They have, however, proved to be a continuing interest in the socialist movement from Marx onwards. Prychitko claims that by examining the humanist side of Marx, a socialist case can be made both for the LMF and markets in a postmodern world. Such a case rests upon an assumption that self? management confers competitive advantage by enhancing information sharing. The case, though interesting, is not (...) yet made. (shrink)

In dieser zwischen 1135 und 1139 verfaßten Schrift, der er zwei Titel gab: Ethica oder Scito te ipsum, erörtert Abaelard die Frage nach dem Guten und dem Bösen, vor allem aber erstmals die Bedeutung des Gewissens für die Selbstbestimmung des Menschen. Er unterscheidet zwischen der Schwäche des Menschen, die durch Selbstbeherrschung überwunden werden kann, und der Sünde, die darin besteht, sich den eigenen Schwächen zu unterwerfen. Seine These, das Gewissen sei die oberste Instanz der Moral und die Moralität oder Verwerflichkeit (...) einer Handlung bestimme sich daher aus der Gesinnung des Handelnden, führte ihn zu der Folgerung, daß derjenige, der böse handelt, ohne es doch selbst zu wissen, dadurch noch nicht schuldig wird - sondern erst dann, wenn er entgegen besserer Einsicht, die ihm aufgegeben und möglich ist, das Böse wählt. Diese Behauptung stieß bei den Zeitgenossen und der Kirche auf Kritik und führte zur Verurteilung Abaelards auf dem Konzil von Sens ; wirkungsgeschichtlich gewann sie gleichwohl große Kraft und Bedeutung, da durch diesen Gedanken die überkommene Doxa, allein der Verstoß gegen moralisch geltende Regeln gebe den Maßstab dafür ab, ein Individuum der Sünde zu bezichtigen, dahingehend zu relativieren, daß nur der sich schuldig macht, der auch wußte, daß er eine Verfehlung begeht. Aus diesem Grund zählt die Schrift zu den bedeutendsten Werken der Weltliteratur. Die Ausgabe präsentiert sie erstmalig in einer vollständigen deutschen Übersetzung. Beigegeben sind der lateinische Text und eine kompetente Einleitung, die die besondere Stellung dieser Schrift im Gesamtwerk Abaelards prägnant vor Augen führt. (shrink)

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During the first four decades of the nineteenth century a debate raged over the nature of light. Following proposals of Isaac Newton made early in the eighteenth century, many physicists accepted the theory that light is composed of tiny particles subject to mechanical forces (see newton). At the beginning of the nineteenth century Thomas Young and Augustin Fresnel revived a competing theory originally suggested by Christiaan Huygens in the seventeenth century, according to which light consists not of particles, but of (...) waves in a medium called the ether. In both cases theorists postulated entities ‐ particles and waves in an ether ‐ that could not be observed. Yet theorists on both sides gave arguments for the existence of these entities and the properties they ascribed to them. They did so on the basis of what they could observe. How was this possible? (shrink)