Cet article propose une étude conceptuelle d’une pratique scientifique. L’analyse phylogénétique, méthode phare en biologie de l’évolution, permet d’inférer les relations évolutives entre différentes espèces ou organismes. De nos jours, elle fait souvent intervenir l’usage de données moléculaires, dont les résultats sont appelés des phylogénies moléculaires. Comment caractériser cette pratique? Nous commençons par une présentation de la méthode, en la découpant en quatre étapes : (1) l’identification puis (2) l’alignement de séquences homologues (descendants d’un ancêtre commun) ; (3) la construction (...) puis (4) l’interprétation d’un arbre phylogénétique. Nous montrons que l’analyse phylogénétique n’est pas une expérimentation, et donc n’appartient pas au « style de laboratoire », tel que défini par Hacking. Elle ne correspond pas non plus à une méthode typique des sciences historiques, telle que décrite par Cleland. Bien que la correspondance de l’analyse phylogénétique avec ces catégorisations ne soit que partielle, nous défendons l’utilité de chacune de ces confrontations pour souligner des aspects distincts de cette pratique. Nous remettons aussi en cause l’idée d’une séparation méthodologique nette entre sciences expérimentales et sciences historiques. (shrink)

Recent proposals that frame norms of action in terms of knowledge have been challenged by Bayesian decision theorists. Bayesians object that knowledge-based norms conflict with the highly successful and established view that rational action is rooted in degrees of belief. I argue that the knowledge-based and Bayesian pictures are not as incompatible as these objectors have made out. Attending to the mechanisms of practical reasoning exposes space for both knowledge and degrees of belief to play their respective roles.

Much of the extant discussion focuses on the question of whether contextualism resolves skeptical paradoxes. Understandably. Yet there has been less discussion as to the internal structure of contextualist theories. Regrettably. Here, for instance, are two questions that could stand further discussion: (i) what is the linguistic basis for contextualism and (ii) what is the parameter that shifts with context?

There are two central kinds of epistemological mistakes: believing things you shouldn’t, and failing to believe things that you should. The knowledge-first program offers a canonical explanation for the former: if you believe something without knowing it, you violate the norm to believe only that which you know. But the explanation does not extend in any plausible way to a story about what’s wrong with suspending judgment when one ought to believe. In this paper I explore prospects for a knowledge-centering (...) account of positive epistemic norms that describe epistemic duties to believe. (shrink)

In this essay, I consider the ontological status of spacetime from the points of view of the standard tensor formalism and three alternatives: twistor theory, Einstein algebras, and geometric algebra. I briefly review how classical field theories can be formulated in each of these formalisms, and indicate how this suggests a structural realist interpretation of spacetime.

Davidson's account of weakness of will dependsupon a parallel that he draws between practicaland theoretical reasoning. I argue that theparallel generates a misleading picture oftheoretical reasoning. Once the misleadingpicture is corrected, I conclude that theattempt to model akratic belief on Davidson'saccount of akratic action cannot work. Thearguments that deny the possibility of akraticbelief also undermine, more generally, variousattempts to assimilate theoretical to practicalreasoning.

COVID-19 vaccine requirements have generated significant debate. Here, we argue that, on the evidence available, such policies should have recognised proof of natural immunity as a sufficient basis for exemption to vaccination requirements. We begin by distinguishing our argument from two implausible claims about natural immunity: natural immunity is superior to ‘artificial’ vaccine-induced immunity simply because it is ‘natural’ and it is better to acquire immunity through natural infection than via vaccination. We then briefly survey the evidence base for the (...) comparison between naturally acquired immunity and vaccine-induced immunity. While we clearly cannot settle the scientific debates on this point, we suggest that we lack clear and convincing scientific evidence that vaccine-induced immunity has a significantly higher protective effect than natural immunity. Since vaccine requirements represent a substantial infringement of individual liberty, as well as imposing other significant costs, they can only be justified if they are necessary for achieving a proportionate public health benefit. Without compelling evidence for the superiority of vaccine-induced immunity, it cannot be deemed necessary to require vaccination for those with natural immunity. Subjecting them to vaccine mandates is therefore not justified. We conclude by defending the standard of proof that this argument from necessity invokes, and address other pragmatic and practical considerations that may speak against natural immunity exemptions. There are no data in this work. (shrink)

Imagine that Ann, asked to name her favorite treat, answers: “Licorice is tasty.” Imagine that Ben, having hidden some licorice in the cupboard, whispers to Ann: “There might be licorice in the cupboard.” What (if any) propositions have Ann and Ben expressed? And what (if anything) determines whether these propositions are true?

This thousand-page book contains one third of the text of Samuel Pepys's diary, along with maps, a chronology, a glossary of archaic words, and an unusually helpful index, The diary, written in commercial short-hand, spans the 1660s, a decade in which power passed from the Roundheads to Charles II, London was ravaged by plague and then by fire, the English repeatedly fought the Dutch, and Pepys grew to be one of the most important civil servants in the land ("the father (...) of the English Navy", according to some). The diary, which I know only in this abridged version, has given me more sheer pleasure than any other book I have ever read. Writing for himself alone, Pepys had no sense of posterity looking over his shoulder with judgments about public, historic importance. He selected things for inclusion in the diary purely on the basis of how they struck him. This grand subjectivity would be fatal in a dull or passive or insensitive writer, but in Pepys it makes the work fresh and vibrant, constantly surprising, unlike anything else in literature. Even when describing an "important" scene, he is still his natural self and gives touches of his own behaviour, like this at the King's coronation: But so great a noise, that I could make but little of the Musique; and endeed, it was lost to everybody. But I had so great a list to pissse, that I went out a little while before the King had done all his ceremonies.... Not just his behavior, but also his reactions. (shrink)

Volume 23, Issue 2, June 2020, Page 187-199.

In recent years, epistemologists have become increasingly impressed with reliabilist theories of justification. 1 Reliabilism is often formulated as the claim that a belief is justified 2 just in case it is a reliable belief; however, this formulation can be somewhat misleading. There is a sense in which a set of beliefs can be reliable, just as a certain history or testimony can be reliable: what one means is that a certain set of propositions is highly accurate, has mostly true (...) members, or is not wrong in any important way. Reliabilists, though, do not just want to say that a belief is justified just in case it is a member of a type with mostly true members, i.e., just in case it is probably true; they also want to appeal to the notion of reliability in that sense in which we say that persons, processes, proce­dures, tests, and experiments are reliable. Reliabilism is a view both about the reliability of beliefs and about the reliability of the person who has the belief or the procedure that is responsible for the belief. (shrink)

The use of genetic testing has prompted the question of whether insurance companies should be able to use predictive genetic test results (GTRs) in their risk classification of clients. While some jurisdictions have passed legislation to prohibit this practice, the UK has instead adopted a voluntary code of practice that merely restricts the ways in which insurance companies may use GTRs. Critics have invoked various theories of justice to argue that this approach is unfair. However, as well as sometimes relying (...) on somewhat idealised assumptions, these analyses have tended to invoke theories that have wide-ranging and highly revisionary implications for insurance. Moreover, they fail to adequately engage with a conception of justice that plausibly undergirds the status quo approach to insurance in the UK. I argue that it is a mistake to simply invoke a single contestable theory in seeking to develop sound policy on the use of GTRs in insurance. To that end, in this paper, I outline three plausible principles of justice that policy on this issue ought to balance: A principle of equity, a principle of equal access and a principle of need. In doing so, I shall offer a pluralist justice-based argument in support of the spirit, if not the precise letter, of the UK approach. (shrink)

A critique of conversational epistemic contextualism focusing initially on why pragmatic encroachment for knowledge is to be avoided. The data for pragmatic encroachment by way of greater costs of error and the complementary means to raise standards of introducing counter-possibilities are argued to be accountable for by prudence, fallibility and pragmatics. This theme is sharpened by a contrast in recommendations: holding a number of factors constant, when allegedly higher standards for knowing hold, invariantists still recommend assertion (action), while contextualists do (...) not. Given the knowledge norm of assertion, if one recommendation is preferable to the other, the result favors the preferred recommendation's account of knowledge. In the final section, I offer a unification of these criticisms centering on the contextualist use of 'epistemic position'. Their use imposes on threshold notions of justification, warrant, or knowledge tests that are suitable only to unlimited comparative or scalar notions like confidence or certainty and places them at one with an important strand of sceptical reasoning. (shrink)

While Billy Budd's beauty has often been connected to his innocence and his moral goodness, the significance of the musical character of his beauty—what I will argue is the site of a struggle for political expression—has not been remarked upon by commentators of Melville's novella. It has, however, been deeply explored by Britten's opera. Music has often been situated at, or just beyond, the limits of communication; it has served as a medium of the ineffable, of unsaid and unsayable truths (...) (and lies), of an expressive power beyond language and reason. It is this expressive but communicatively problematic role that Billy embodies and that Billy Budd sets into political motion. In this essay, I would like to suggest that Billy's musical beauty can only be fully appreciated, and assumes full significance, when considered within the context of the various conceptions of beauty, and corresponding conceptions of authority, presented in the novella and in the opera. In particular, I will argue that Billy's beauty is a modern one that calls for the active participation of its audience. (shrink)

Communism is not a reaction against the failure of the nineteenth century to organize optimal economic output. It is a reaction against its comparative success. It is a protest against the emptiness of economic welfare, an appeal to the ascetic in us all... The idealistic youth play with Communism because it is the only spiritual appeal which feels to them contemporary.

This article takes as its starting point the recent work of Frank Ankersmit on subjective historical experience. Such an experience, which Ankersmit describes as a ‘sudden obliteration of the rift between present and past’ is connected strongly with the Deweyan theory of art as experiential, which contains an account of aesthetic experience as affording a similar breakdown in the polarization of the subject and object of experience. The article shows how other ideas deriving from the phenomenological tradition and the philosophy (...) of perception can fruitfully be applied to the same terrain, and an account of aesthetic experience is built up that stresses embodied, differential and virtual aspects in the perception of aesthetic objects. The disruption and/or enhancement of these aisthetic aspects of perception, coupled with the self-conscious reflection thereby occasioned, is put forward as an account of aesthetic experience that links Ankersmit’s ideas with those of others, and a critical reading is made of a section of Ankersmit’s Sublime Historical Experience that centers on his experience of a painting by Francesco Guardi. The fijinal section aims at strengthening aspects of Ankersmit’s ideas and renews his critique of the radical constructivism of Oakeshott. (shrink)

Full-length studies of individual books of Nietzsche have been lacking until now both because of the immaturity of the field and because Nietzsche's style itself seems to contraindicate them. Close reading, however, reveals a great deal of literary and philosophical unity. This holds good even of Human, All-Too-Human, Nietzsche's longest and most unwieldy work. The book represents Nietzsche's break with Schopenhauer and Wagner, as well as the birth of Nietzsche as we know him in the later works. The book's embrace (...) of science as conducive to culture follows the early works' vilification of science as anathema to culture. This reassessment is possible because science is now seen as a method and a discipline rather than an insatiable drive for knowledge, and culture is now a broad set of symbols and activities rather than a narrowly focussed "unity of artistic style." Both changes were motivated by Nietzsche's rejection of Wagner. Part of the help science provides culture is its release from restrictive metaphysical beliefs. Nietzsche battles metaphysics, principally that of Schopenhauer, by means of scientific arguments meant both to provide alternative explanations of phenomena and to expose the origin of countervailing metaphysical beliefs. However, even when combined in a two-pronged attack, these arguments still fall short of their goal of refuting metaphysics. The scientific world-view may nonetheless aid the development of "free spirits," whose unalloyed devotion to knowledge makes them science's paragons. The free spirits are the prototypes for the later works' strong individuals, yet here they are viewed as crucial elements in the cultural development of general society. Nietzsche seeks both to create them and to encourage their devotion to the needs of culture. Part of his effort to do this is the deployment of a terse, elliptical style which will involve the reader more thoroughly than can be done by means of argument alone. Study of the book's structure reveals that its core, Parts 1, 5, and 9, outlines the relation between science, culture, and free spirits. (shrink)

One important argument for the free market is that of the ‘invisible hand’ or ‘private vices, public virtues’. That is, individual profit-seeking behaviour by suppliers will lead to better quality, lower priced goods for consumers than could be achieved by other means. Where this is so the market may be to the benefit of all, including the worst off. However, reflection on a range of cases – including what is here called the Titanic Puzzle, introduced by Thomas Schelling - shows (...) that this is not always so. Where there are important market failures which may not be correctable within the market, the goal of helping the worst off and vulnerable can sometimes be best served by setting up structures which generate common interests between supplier and consumer. The goods considered here are termed ‘high-fidelity slow-release’ goods. They are those where consumption of the good is a lengthy or deferred process, ‘escape costs’ are high, and the quality of the good may vary over the life of the exchange, subject to the influence of the supplier even after purchase. Many long term financial products, and other goods such as education, plausibly have such character. An unregulated market for such goods is highly problematic. (shrink)