Newton’s famous pronouncement, Hypotheses non fingo, first appeared in 1713, but his anti-hypothetical stance was present as early as 1672. For example, in his first paper on optics, Newton claims that his doctrine of light and colours is a theory, not a hypothesis, for three reasons (1) It is certainly true, because it supported by (or deduced from) experiment; (2) It concerns the physical properties of light, rather than the nature of light; and (3) It has testable consequences. Despite (...) his clear anti-hypothetical statements, a corpuscular hypothesis lies beneath Newton’s theory of colours. What are we to make of this? Is Newton guilty of feigning a hypothesis? Some writers, such as Sabre and Dear, argue that Newton’s Hypotheses non fingo is merely ‘lip-service’ to the dominant methodological tradition. Others, such as Janiak, argue that Newton’s anti-hypotheticalism is a polemic device, designed specifically to oppose his Cartesian and Leibnizian critics. I argue that, despite his corpuscular hypothesis, we should take Newton’s pronouncement as a genuine account of his methodology. I take a fresh look at Newton’s first optical papers in light of the role of hypotheses in the Baconian-experimental tradition in which Newton’s early research was conducted. I argue that Newton is working with a rough but genuine distinction between hypothesis and theory. This distinction is consistent with both the Baconian-experimental method and with his later anti-hypothetical pronouncements. I conclude that Newton did not ‘feign’ the corpuscular hypothesis. (shrink)

Locke denied that ideas of secondary qualities resemble their causes. It has been suggested that Locke denied this because he accepted a mechanical corpuscular hypothesis about the constitution of objects. This paper shows that this and other usual explanations of Locke's denial are mistaken. Further, it suggests an alternative relationship between the scientific account and Locke's philosophical views, and finally it provides Locke's real justification for his claim that ideas of secondary qualities do not resemble their causes.

Robert Boyle (1627-91) is credited with coining the term ‘corpuscle’, as his understanding of the ultimate subdivision of matter. Some of the properties attributed to the corpuscles by him form the subject of this paper. The nature of the corpuscles, their origin, permanence, divisibility, abradibility and how they might contribute to taste, are considered. The importance of motion to Boyle’s account of corpuscular behaviour is treated of briefly.

The modern corpuscular theory of radiation was born in 1905 when Einstein advanced his light quantum hypothesis; and the steps by which Einstein's hypothesis, after years of profound scepticism, was finally and fully vindicated by Arthur Compton's 1922 scattering experiments constitutes one of the most stimulating chapters in the history of recent physics. To begin to appreciate the complexity of this chapter, however, it is only necessary to emphasize an elementary but very significant point, namely, that while (...) Einstein based his arguments for quanta largely on the behaviour of high-frequency black body radiation or ultra-violet light, Compton experimented with X-rays. A modern physicist accustomed to picturing ultra-violet light and X-radiation as simply two adjacent regions in the electromagnetic spectrum might regard this distinction as hair-splitting. But who in 1905 was sure that X-rays and γ-rays are far more closely related to ultra-violet light than to α-particles, for example? This only became evident after years of painstaking research, so that moving without elaboration from Einstein's hypothesis to Compton's experiments automatically eliminates from consideration an important segment of history—a segment in which a major role was played by William Henry Bragg. (shrink)

Early modern experimental philosophers were opposed to speculation, and yet many endorsed speculative theories. This chapter gives a partial explanation of why this is so, using Robert Boyle’s acceptance and promotion of the corpuscular philosophy as a case study. It argues that, in addition to furnishing experimental evidence for the corpuscular hypothesis in his Forms and Qualities, Boyle attempted to establish its epistemic superiority over other speculative theories on the grounds that it is founded upon superior principles. (...) In his ‘Excellency and Grounds of the Mechanical Hypothesis’, Boyle claims that the principles of the corpuscular philosophy are more intelligible, more parsimonious, ontologically primary, simpler and more comprehensive than those of its rivals. On grounds of comparative plausibility then, according to Boyle, the corpuscular philosophy is eminently preferable to its rivals. The final section of the chapter traces the legacy of Boyle’s appraisal of the epistemic status of the corpuscular philosophy in the writings of many of his compatriots from the mid-1660s to the Cyclopedia of Ephraim Chambers of 1728. (shrink)

This article examines questions connected with the two features of Locke's intellectual landscape that are most salient for understanding his philosophy of science: (1) the profound shift underway in disciplinary boundaries, in methodological approaches to understanding the natural world, and in conceptions of induction and scientific knowledge; and (2) the dominant scientific theory of his day, the corpuscular hypothesis. Following the introduction, section 2 addresses questions connected to changing conceptions of scientific knowledge. What does Locke take science (scientia) (...) and scientific knowledge to be generally, why does he think that scientia in natural philosophy is beyond the reach of human beings, and what characterizes the conception of human knowledge in natural philosophy that he develops? Section 3 addresses the question provoked by Locke's apparently conflicting treatments of the corpuscular hypothesis. Does he accept or defend the corpuscular hypothesis? If not, what is its role in his thought, and what explains its close connection to key theses of the Essay? Since a scholarly debate has arisen about the status of the corpuscular hypothesis for Locke, Section 3 reviews some main positions in that debate. Section 4 considers the relationship between Locke's thought and that of a figure instrumental to the changing conceptions of scientific knowledge, Isaac Newton. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Boyle on Occasionalism: An Unexamined SourcePeter Anstey*1. IntroductionThe question of Robert Boyle’s attitude to occasionalism 1 is central to our understanding of his corpuscular hypothesis, yet there has been little or no consensus in the secondary literature regarding Boyle’s attitude. 2 The doctrine of occasionalism is that matter is causally inefficacious and that God is the only causal agent in nature. It is a doctrine that was (...) particularly attractive to those Cartesian philosophers in the latter part of the seventeenth century who sought to find an active role for God in nature, for it both avoided the remoteness of the deist’s god and provided a ready explanation of the miraculous. Since Boyle was a mechanical philosopher, a Christian, and strongly influenced by Descartes, it seems likely that he too would have found occasionalism attractive; but there is no sustained discussion of occasionalism in his published works. It is therefore of singular importance that three folios in volume 10 of the Boyle Papers comprise a paper containing an explicit philosophical treatment of this doctrine. 3 It appears that Boyle considered these folios to be of sufficient importance to have them translated into Latin, perhaps to be circulated [End Page 57] among some of his non-English speaking acquaintances. Furthermore, this discussion of occasionalism is not simply of philosophical interest for its bearing on our interpretation of Boyle’s corpuscular philosophy, but it also has a degree of intrinsic philosophical interest in its own right. Moreover, the folios are of historical interest as a further important piece of evidence for the reception and dissemination of occasionalist ideas in Britain in the latter half of the seventeenth century. It is fitting therefore that they should be published.What follows is the reproduction of folios 38–40 from volume 10 of the Boyle Papers. This is prefaced by a short editorial introduction and is followed by a philosophical commentary, a short history of Boyle’s reception of oc-casionalist ideas and a review of recent interpretations of Boyle’s natural philosophy on the issue of occasionalism. Finally, the paper concludes with a discussion of Boyle’s philosophical method and method of work. This section attempts to resolve the apparent tension between the guarded defense of occasionalism offered in the folios published here and the incompatible doctrines espoused in Boyle’s published works.2. Editorial Introduction to Boyle Papers volume 10, folios 38–40In folios 38–40 of volume 10 of the Boyle Papers there is a sustained discussion of the thesis that “God himself is the only proper and immediate cause” among things corporeal. In Michael Hunter’s guide to the microfilm edition the folios are identified as a “[f]ragment of discourse discussing Cartesian views” and the reader is there referred to folios 42–46. 4 However, Edward B. Davis has correctly identified these latter folios as draft material for Boyle’s Final Causes. 5 Hunter has confirmed that the hand that wrote these reflections on occasionalism is that of A, an amanuensis who was in Boyle’s employment from c. 1680 and that some of the corrections are in the same hand. This is strong evidence that the passage was composed in the late 1670s or the 1680s. 6 The passage is written on a bifoliate followed by a single leaf linked to the former by a catchword. The hand is legible, and the pages contain only a small number of corrections. The passage itself consists of ninety-one lines. It is endorsed “A Fragment” in pencil, bears no title, and most likely was never completed. At one point Boyle tells us of the grounds of occasionalism that “there will be occasion to enlarge on them when I come to vindicate them,” something which he does not complete in the lines that follow. Rather the discussion comes to an abrupt halt after five and a half lines into the third folio. [End Page 58]Hunter has also identified a Latin translation of these folios in Boyle Papers, volume XXIX, folios 77–82v. The translation is in hand L, who has not been identified but who worked for Boyle in the 1680s. 7 It is... (shrink)

This paper presents a comprehensive study of Robert Boyle’s writings on seminal principles or seeds. It examines the role of seeds in Boyle’s account of creation, the generation of plants and animals, spontaneous generation, the generation of minerals and disease. By an examination of all of Boyle’s major extant discussions of seeds it is argued that there were discernible changes in Boyle’s views over time. As the years progressed Boyle became more sceptical about the role of seminal principles in the (...) generation of minerals and he came to reject the spontaneous generation of insects and animals from putrefying matter. It is also argued that Boyle’s notion of a generative or ‘plastick’ principle creates a tension within his mechanical philosophy. He appeals to a plastick power in order to explain those phenomena of generation that are beyond the explanatory resources of the corpuscular hypothesis. However, when pressed to explain the nature of this power he either hints, somewhat paradoxically, that it too can be explained mechanically or admits his nescience. (shrink)

Edited book containing the following essays: 1 Getting over Gettier, Alan Musgrave.- 2 Justified Believing: Avoiding the Paradox Gregory W. Dawes.- 3 Literature and Truthfulness,Gregory Currie.- 4 Where the Buck-passing Stops, Andrew Moore.- 5 Universal Darwinism: Its Scope and Limits, James Maclaurin, - 6 The Future of Utilitarianism,Tim Mulgan. 7 Kant on Experiment, Alberto Vanzo.- 8 Did Newton ʻFeignʼ the Corpuscular Hypothesis? Kirsten Walsh.- 9 The Progress of Scotland: The Edinburgh Philosophical Societies and the Experimental Method, Juan Gomez.- (...) 10 Propositions: Truth vs. Existence, Heather Dyke.- 11 Against Advanced Modalizing, Josh Parsons.- 12 Spread Worlds, Plenitude and Modal Realism: A Problem for DavidLewis, Charles R. Pigden and Rebecca E. B. Entwisle.- 13 Defending Quine on Ontological Commitment. 14. The Scandal of Platonism, Vladimír Svoboda.- 15 A Neglected Reply to Prior's Dilemma J. C. Beall. 16 Mathematical and Empirical Concepts, Pavel Materna.- 17 Post-Fregean Thoughts on Propositional Unity, Bjørn Jespersen.- 18 Best-path Theorem Proving: Compiling Derivations, Martin Frické.- 19 Is Imperative Inference Impossible?, Hannah Clark-Younger. ​. (shrink)

Early modern experimental philosophers often appear to commit to and utilise corpuscular and mechanical hypotheses. This is somewhat mysterious, for such hypotheses frequently appear to be simply assumed, which is odd for a research program which emphasises the careful experimental accumulation of facts. Isaac Newton was one such experimental philosopher, and his optical work is considered a clear example of the experimental method. Focusing on his optical investigations, Walsh identifies three roles for hypotheses. First, Newton introduces a hypothesis (...) to explicate his abstract theory. The purpose here is primarily to improve understanding or uptake of the theory. Second, he uses a hypothesis as a platform from which to generate some crucial experiments to decide between competing accounts. The purpose here is to suggest experiments in order to bring a dispute to empirical resolution. Third, he uses a hypothesis to suggest an underlying physical cause, which he then operationalises and represents abstractly in his formal theory. The second and third roles are related in that they are both cases of scaffolding: hypotheses provide a temporary platform from which further experimental work and/or theorising can be carried out. In short, the entities and processes included in Newton’s optical hypothesis are not simply assumed hypothetical posits. Rather, they play instrumental roles in Newton’s experimental philosophy. (shrink)

Non-commuting quantities and hidden parameters – Wave-corpuscular dualism and hidden parameters – Local or nonlocal hidden parameters – Phase space in quantum mechanics – Weyl, Wigner, and Moyal – Von Neumann’s theorem about the absence of hidden parameters in quantum mechanics and Hermann – Bell’s objection – Quantum-mechanical and mathematical incommeasurability – Kochen – Specker’s idea about their equivalence – The notion of partial algebra – Embeddability of a qubit into a bit – Quantum computer is not Turing machine (...) – Is continuality universal? – Diffeomorphism and velocity – Einstein’s general principle of relativity – „Mach’s principle“ – The Skolemian relativity of the discrete and the continuous – The counterexample in § 6 of their paper – About the classical tautology which is untrue being replaced by the statements about commeasurable quantum-mechanical quantities – Logical hidden parameters – The undecidability of the hypothesis about hidden parameters – Wigner’s work and и Weyl’s previous one – Lie groups, representations, and psi-function – From a qualitative to a quantitative expression of relativity − psi-function, or the discrete by the random – Bartlett’s approach − psi-function as the characteristic function of random quantity – Discrete and/ or continual description – Quantity and its “digitalized projection“ – The idea of „velocity−probability“ – The notion of probability and the light speed postulate – Generalized probability and its physical interpretation – A quantum description of macro-world – The period of the as-sociated de Broglie wave and the length of now – Causality equivalently replaced by chance – The philosophy of quantum information and religion – Einstein’s thesis about “the consubstantiality of inertia ant weight“ – Again about the interpretation of complex velocity – The speed of time – Newton’s law of inertia and Lagrange’s formulation of mechanics – Force and effect – The theory of tachyons and general relativity – Riesz’s representation theorem – The notion of covariant world line – Encoding a world line by psi-function – Spacetime and qubit − psi-function by qubits – About the physical interpretation of both the complex axes of a qubit – The interpretation of the self-adjoint operators components – The world line of an arbitrary quantity – The invariance of the physical laws towards quantum object and apparatus – Hilbert space and that of Minkowski – The relationship between the coefficients of -function and the qubits – World line = psi-function + self-adjoint operator – Reality and description – Does a „curved“ Hilbert space exist? – The axiom of choice, or when is possible a flattening of Hilbert space? – But why not to flatten also pseudo-Riemannian space? – The commutator of conjugate quantities – Relative mass – The strokes of self-movement and its philosophical interpretation – The self-perfection of the universe – The generalization of quantity in quantum physics – An analogy of the Feynman formalism – Feynman and many-world interpretation – The psi-function of various objects – Countable and uncountable basis – Generalized continuum and arithmetization – Field and entanglement – Function as coding – The idea of „curved“ Descartes product – The environment of a function – Another view to the notion of velocity-probability – Reality and description – Hilbert space as a model both of object and description – The notion of holistic logic – Physical quantity as the information about it – Cross-temporal correlations – The forecasting of future – Description in separable and inseparable Hilbert space – „Forces“ or „miracles“ – Velocity or time – The notion of non-finite set – Dasein or Dazeit – The trajectory of the whole – Ontological and onto-theological difference – An analogy of the Feynman and many-world interpretation − psi-function as physical quantity – Things in the world and instances in time – The generation of the physi-cal by mathematical – The generalized notion of observer – Subjective or objective probability – Energy as the change of probability per the unite of time – The generalized principle of least action from a new view-point – The exception of two dimensions and Fermat’s last theorem. (shrink)

Since all of the distinguishing features of the early development of modern physical science seem to be embodied in the works of Newton, e.g., the abhorrence of occult qualities and the great surge of experimental knowledge, the mechanical view of matter explained by mathematical theory, the constant attempt to reconcile the God of revelation with the world machinery, Robert Boyle has too often been overlooked. In addition to giving a short sketch of Boyle's life, Mrs. Hall has admirably selected texts (...) from the eighteenth century Birch edition which at once manifest the genius of Boyle and his influence on Newton. Each selection is adequately explained and commented upon by Mrs. Hall in Part One. The chapter headings in the author's introductory essay parallel the headings she has given to the selections in Part Two: "The New Learning and its Method," "The Mechanical Philosophy," "Chemistry," and "Pneumatics." The sections on mechanical philosophy contain the core of Boyle's natural philosophy. The characteristic blend of natural philosophy with natural religion which was common to many members of the Royal Society led Boyle to disdain the Baconian attempt to banish teleology from investigations. Boyle's view of a world machinery is never considered as a scientific hypothesis as that term is understood today, but rather it appears to be at times a theological doctrine. The mechanical theory itself—the corpuscular theory of matter—which Boyle promised to set down in systematic form was actually never written as a complete system. Mrs. Hall has done much to give systematic coherence to Boyle's corpuscular theory in her excellent commentary and selection of texts. The book contains an adequate index, bibliographical notes, and a partial list of Boyle's works. One with an historical interest in the Newtonian age will discover another giant whose shoulders made it all possible.—J. J. R. (shrink)

Several recent studies of early modern natural philosophy have claimed that corpuscularism and experimental philosophy were sharply distinct or even conflicting views. This chapter provides a different perspective on the relation between corpuscularism and experimental philosophy by examining Domenico Guglielmini’s ‘Philosophical Reflections’ on salts (1688). This treatise on crystallography develops a corpuscularist theory and defends it in a way that is in line with the methodological prescriptions, epistemological strictures, and preferred argumentative styles of experimental philosophers. The examination of the ‘Reflections’ (...) shows that early modern philosophers could consistently endorse, at the same time, corpuscularism and experimental philosophy. (shrink)

If the Past Hypothesis underlies the arrows of time, what is the status of the Past Hypothesis? In this paper, I examine the role of the Past Hypothesis in the Boltzmannian account and defend the view that the Past Hypothesis is a candidate fundamental law of nature. Such a view is known to be compatible with Humeanism about laws, but as I argue it is also supported by a minimal non-Humean "governing'' view. Some worries arise from (...) the non-dynamical and time-dependent character of the Past Hypothesis as a boundary condition, the intrinsic vagueness in its specification, and the nature of the initial probability distribution. I show that these worries do not have much force, and in any case they become less relevant in a new quantum framework for analyzing time's arrows---the Wentaculus. Hence, the view that the Past Hypothesis is a candidate fundamental law should be more widely accepted than it is now. (shrink)

(2001). Corpuscular alchemy and the tradition of Aristotle's Meteorology, with special reference to Daniel Sennert. International Studies in the Philosophy of Science: Vol. 15, No. 2, pp. 145-153. doi: 10.1080/02698590120059013.

According to the conventionalist doctrine of space elaborated by the French philosopher-scientist Henri Poincaré in the 1890s, the geometry of physical space is a matter of definition, not of fact. Poincaré’s Hertz-inspired view of the role of hypothesis in science guided his interpretation of the theory of relativity (1905), which he found to be in violation of the axiom of free mobility of invariable solids. In a quixotic effort to save the Euclidean geometry that relied on this axiom, Poincaré (...) extended the purview of his doctrine of space to cover both space and time. The centerpiece of this new doctrine is what he called the ‘‘principle of physical relativity,’’ which holds the laws of mechanics to be covariant with respect to a certain group of transformations. For Poincaré, the invariance group of classical mechanics defined physical space and time (Galilei spacetime), but he admitted that one could also define physical space and time in virtue of the invariance group of relativistic mechanics (Minkowski spacetime). Either way, physical space and time are the result of a convention. (shrink)

What is wrong with ad hoc hypotheses? Ever since Popper’s falsificationist account of adhocness, there has been a lively philosophical discussion about what constitutes adhocness in scientific explanation, and what, if anything, distinguishes legitimate auxiliary hypotheses from illicit ad hoc ones. This paper draws upon distinct examples from pseudoscience to provide us with a clearer view as to what is troubling about ad hoc hypotheses. In contrast with other philosophical proposals, our approach retains the colloquial, derogative meaning of adhocness, and (...) calls attention to the way in which the context of a theoretical move bears on the charge of adhocness. We also discuss the role of motivations implicit in the concept of adhocness, and the way ad hoc moves draw on theory-internal rationalizations. (shrink)

On the nature of mathematical reasoning -- Mathematical magnitude and experience -- Non-Euclidian geometries -- Space and geometry -- Experience and geometry -- Classical mechanics -- Relative and absolute motion -- Energy and thermodynamics -- Hypotheses in physics -- Theories of modern physics -- Probability calculus -- Optics and electricity -- Electrodynamics -- The end of matter.

It is generally accepted among philosophers of science that hypothesis testing is a key methodological feature of science. As far as philosophical theories of confirmation are con...

The Past Hypothesis is the claim that the Boltzmann entropy of the universe was extremely low when the universe began. Can we make sense of this claim when *classical* gravitation is included in the system? I first show that the standard rationale for not worrying about gravity is too quick. If the paper does nothing else, my hope is that it gets the problems induced by gravity the attention they deserve in the foundations of physics. I then try to (...) make plausible a very weak claim: that there is a well-defined Boltzmann entropy that *can* increase in *some* interesting self-gravitating systems. More work is needed before we can say whether this claim answers the threat to the standard explanation of entropy increase. (shrink)

There are scenarios in which letting one’s own views on the question whether p direct one’s inquiry into that question brings about individual and collective epistemic benefits. However, these scenarios are also such that one’s evidence doesn’t support believing one’s own views. So, how to vindicate the epistemic benefits of directing one’s inquiry in such an asymmetric way, without asking one to hold a seemingly irrational doxastic attitude? To answer this question, the paper understands asymmetric inquiry direction in terms of (...) having one’s inquiry be guided by a doxastic attitude, which I call hypothesis, that’s governed by the following norm: One’s hypothesis that p is rational just in case it is a manifestation of the best feasible way to form a doxastic attitude regarding p that promotes the best feasible ways to advance towards settling the question of p’s (or of any other suitably related proposition’s) truth-value. (shrink)

According to one theory, the brain is a sophisticated hypothesis tester: perception is Bayesian unconscious inference where the brain actively uses predictions to test, and then refine, models about what the causes of its sensory input might be. The brain’s task is simply continually to minimise prediction error. This theory, which is getting increasingly popular, holds great explanatory promise for a number of central areas of research at the intersection of philosophy and cognitive neuroscience. I show how the theory (...) can help us understand striking phenomena at three cognitive levels: vision, sensory integration, and belief. First, I illustrate central aspects of the theory by showing how it provides a nice explanation of why binocular rivalry occurs. Then I suggest how the theory may explain the role of the unified sense of self in rubber hand and full body illusions driven by visuotactile conflict. Finally, I show how it provides an approach to delusion formation that is consistent with one-deficit accounts of monothematic delusions. (shrink)

This paper analyzes the ergodic hypothesis in the context of Boltzmann’s late work in statistical mechanics, where Boltzmann lays the foundations for what is today known as the typicality account. I argue that, based on the concepts of stationarity (of the measure) and typicality (of the equilibrium state), the ergodic hypothesis, as an idealization, is a consequence rather than an assumption of Boltzmann’s account. More precisely, it can be shown that every system with a stationary measure and an (...) equilibrium state (be it a typical state with respect to the phase space or the time average) behaves essentially as if it were ergodic. I claim that Boltzmann was aware of this fact as it grounds both his notion of equilibrium, relating it to the thermodynamic notion of equilibrium, and his estimate of the fluctuation rates. (shrink)

The singularity hypothesis is a radical hypothesis about the future of artificial intelligence on which self-improving artificial agents will quickly become orders of magnitude more intelligent than the average human. Despite the ambitiousness of its claims, the singularity hypothesis has been defended at length by leading philosophers and artificial intelligence researchers. In this paper, I argue that the singularity hypothesis rests on scientifically implausible growth assumptions. I show how leading philosophical defenses of the singularity hypothesis (...) (Chalmers 2010, Bostrom 2014) fail to overcome the case for skepticism. I conclude by drawing out philosophical implications of this discussion for our understanding of consciousness, personal identity, digital minds, existential risk, and ethical longtermism. GPI Working Paper No . 19-2022. (shrink)

The present volume is the PhD thesis of Samuel Scolnicov, co-founder of the International Plato Society, published posthumously to illustrate the foundation of his interest in the 'core Plato'. The issues raised in this thesis are now of wider interest than they were then and many of his theses have found wider acceptance. The book is edited by Harold Tarrant, long-time colleague and friend of Samuel Scolnicov and preceded by a foreword not only by the editor, but also the authoris (...) niece, Hanna Scolnicov, giving a more personal and detailed introduction to the author behind the thesis and putting his achievements into a broader perspective. (shrink)

This book reconstructs key aspects of the early career of Descartes from 1618 to 1633; that is, up through the point of his composing his first system of natural philosophy, Le Monde, in 1629-33. It focuses upon the overlapping and intertwined development of Descartes’ projects in physico-mathematics, analytical mathematics, universal method, and, finally, systematic corpuscular-mechanical natural philosophy. The concern is not simply with the conceptual and technical aspects of these projects; but, with Descartes’ agendas within them and his construction (...) and presentation of his intellectual identity in relation to them. Descartes’ technical projects, agendas and senses of identity shifted over time, entangled and displayed great successes and deep failures, as he morphed from a mathematically competent, Jesuit trained graduate in neo-Scholastic Aristotelianism to aspiring prophet of a systematised corpuscular-mechanism, passing through stages of being a committed physico-mathematicus, advocate of a putative ‘universal mathematics’, and projector of a grand methodological dream. In all three dimensions—projects, agendas and identity concerns—the young Descartes struggled and contended, with himself and with real or virtual peers and competitors, hence the title ‘Descartes-Agonistes’. (shrink)

Preregistration has been proposed as a useful method for making a publicly verifiable distinction between confirmatory hypothesis tests, which involve planned tests of ante hoc hypotheses, and exploratory hypothesis tests, which involve unplanned tests of post hoc hypotheses. This distinction is thought to be important because it has been proposed that confirmatory hypothesis tests provide more compelling results (less uncertain, less tentative, less open to bias) than exploratory hypothesis tests. In this article, we challenge this proposition (...) and argue that there are several advantages of exploratory hypothesis tests that can make their results more compelling than those of confirmatory hypothesis tests. We also consider some potential disadvantages of exploratory hypothesis tests and conclude that their advantages can outweigh the disadvantages. We conclude that exploratory hypothesis tests avoid researcher commitment and researcher prophecy biases, reduce the probability of data fraud, are more appropriate in the context of unplanned deviations, facilitate inference to the best explanation, and allow peer reviewers to make additional contributions at the data analysis stage. In contrast, confirmatory hypothesis tests may lead to an inappropriate level of confidence in research conclusions, less appropriate analyses in the context of unplanned deviations, and greater bias and errors in theoretical inferences. (shrink)

For millennia self has been conjectured to be necessary for consciousness. But scant empirical evidence has been adduced to support this hypothesis. Inconsistent explications of “self” and failure to design apt experiments have impeded progress. Advocates of phenomenological psychiatry, however, have helped explicate “self,” and employed it to explain some psychopathological symptoms. In those studies, “self” is understood in a minimalist sense, sheer “for-me-ness.” Unfortunately, explication of the “minimal self” (MS) has relied on conceptual analysis, and applications to psychopathology (...) have been hermeneutic, allowing for many degrees of interpretive latitude. The result is that MS’s current scientific status is analogous to that of the “atom,” at the time when “atom” was just beginning to undergo transformation from a philosophical to a scientific concept. Fortunately, there is now an opportunity to promote a similar transformation for “MS.” Discovery of the brain’s Default Mode Network (DMN) opened the door to neuroimaging investigations of self. Taking the DMN and other forms of intrinsic activity as a starting point, an empirical foothold can be established, one that spurs experimental research and that enables extension of research into multiple phenomena. New experimental protocols that posit “MS” can help explain phenomena hitherto not thought to be related to self, thereby hastening development of a mature science of self. In particular, targeting phenomena wherein consciousness is lost and recovered, as in some cases of Unresponsive Wakefulness Syndrome (UWS), allow for design of neuroimaging probes that enable detection of MS during non-conscious states. These probes, as well as other experimental protocols applied to NREM Sleep, General Anesthesia (GA), and the waking state, provide some evidence to suggest that not only can self and consciousness dissociate, MS might be a necessary precondition for conscious experience. Finally, these findings have implications for the science of consciousness: it has been suggested that “levels of consciousness” (LoC) is not a legitimate concept for the science of consciousness. But because we have the conceptual and methodological tools with which to refine investigations of MS, we have the means to identify a possible foundation—a bifurcation point—for consciousness, as well as the means by which to measure degrees of distance from that foundation. These neuroimaging investigations of MS position us to better assess whether LoC has a role to play in a mature science of consciousness. (shrink)

Everybody knows that Superman is Clark Kent. Nobody knows that Superman is Clark Kent. Located between these two absolute statements is the epistemological limit that separates the superhero fictitious universe from our universe of causal reality. The superheroic double identity is a secret shared by the superhero and the reader of the comic or the viewer of the movie, and quite often the superhero winks at the outside world, thus breaking the 4th wall and establishing this collusive relationship. However, in (...) our hypothesis, we are interested in Superman not as a fictitious archetype, but rather as a fictitious metaphor. We are not interested in his double identity as the matrix of superheroic attributes and narratives, but rather as the differential limit between superhuman and human within the fictional universe. Because, the reader or the viewer may share the secret identity with Superman and also with Spiderman or Batman or any other superhuman, but the secret equivalence of Superman and Clark Kent contains another hidden antithesis. (shrink)

Berkeley's Siris may be an unduly neglected treatise. Yet it reveals and confirms its author's philosophical ambitions and achievements. The greatest of them is his theory of causality. Berkeley tries to show that agents can influence the world by using ethereal corpuscles as their instruments. These particles are both material but also in some sense immaterial or occult because they both follow and do not follow the laws of nature. Siris is a rhetorical text which uses analogy, metaphor, paradox, and (...) ambiguity to illuminate the reader. I argue that the universe in Siris is ambiguous with respect to its material and immaterial essence. The world is at the same time scientific and material and metaphysical and immaterial. Berkeley fights against scientific mechanistic materialism when he subordinates science to God's will. I try to clarify how ambiguity works for Berkeley the metaphysician in establishing the superiority of minds or agents over matter and mechamisms. (shrink)

It is often said that the world is explained by laws of nature together with initial conditions. But does that mean initial conditions don’t require further explanation? And does the explanatory role played by initial conditions entail or require that time has a preferred direction? This chapter looks at the use of the ‘initialness defence’ in physics, the idea that initial conditions are intrinsically special in that they don’t require further explanation, unlike the state of the world at other times. (...) Such defences commonly assume a primitive directionality of time to distinguish between initial and final conditions. Using the case study of the time-asymmetry of thermodynamics and the so-called ‘past hypothesis’ — the hypothesis that the early universe was in a state of very low entropy —, I outline and support a deflationary account of the initialness defence that does not pre- suppose a basic directionality of time, and argue that there is a relevant explanatory asymmetry between initial conditions and the state of systems at other times only if certain causal conditions are satisfied. Hence, the initialness defence is available to those who reject a fundamental direction of time. (shrink)

Summary Robert Boyle did not subordinate chemistry to mechanical philosophy. He was in fact reluctant to explain chemical phenomena by having recourse to the mechanical properties of particles. For him chemistry provided a primary way of penetrating into nature. In his chemical works he employed corpuscles endowed with chemical properties as his explanans. Boyle's chemistry was corpuscular, rather than mechanical. As Boyle's views of seminal principles show, his corpuscular philosophy cannot be described as a purely mechanical theory of (...) matter. Boyle's classification of corpuscles allowed him to connect his corpuscular views of matter with chemistry. Boyle did not rule out the possibility of a classification of chemical substances based on their properties: his aim was to reform the received classification. (shrink)

Extant literature on Goodman’s ‘New Riddle of Induction’ deals mainly with two versions. I consider both of them, starting from the (‘epistemic’) version of Goodman’s classic of 1954. It turns out that it belongs to the realm of applications of inductive logic, and that it can be resolved by admitting only significant evidence (as I call it) for confirmations of hypotheses. Sect. 1 prepares some ground for the argument. As much of it depends on the notion of evidential significance, this (...) concept is defined and its introduction motivated. Further, I introduce and explain the distinction between support and confirmation: put in a slogan, ‘confirmation is support by significant evidence’. The second section deals with the Riddle itself. I demonstrate that, given the provisions of the first section, not ‘anything confirms anything’: significant green-evidence confirms only green-hypotheses (and no grue-hypotheses), and significant grue-evidence confirms only grue-hypotheses (and no green-hypotheses), whichever terms we use for expressing these evidences or hypotheses. The third section rounds off my treatment. First I show that Frank Jackson’s use of his counterfactual condition is unsuccessful. Further, I argue that no unwanted consequences result, if one starts from the other, ‘objective’, definition of ‘grue’, as it constitutes no more than a mere fact of logic that cannot do any harm. Finally, I present a grue-case involving both kinds of definition, where the exclusive confirmation of either the green- or the grue-hypothesis is shown. (shrink)

Competition between scientific hypotheses is not always a matter of mutual exclusivity. Consistent hypotheses can compete to varying degrees either directly or indirectly via a body of evidence. We motivate and defend a particular account of hypothesis competition by showing how it captures these features. Computer simulations of Bayesian inference are used to highlight the limitations of adopting mutual exclusivity as a simplifying assumption to model scientific reasoning, particularly due to the exclusion of hypotheses that may be true. We (...) end with a case study demonstrating the subtleties involved in hypothesis competition in scientific practice. (shrink)

흑백방의 메리 사례에 대한 능력가설은 한 때 “수용된 견해”의 지위를 누리는 듯했지만 지금은 그 영향력이 상당히 쇠퇴했다. 이에는 두 가지 계기가 있었던 것으로 보인다. 하나는 니다뤼멜린의 반론이다. 그는 메리가 방에서 나와서 획득하는 것이 능력 이상임을 보여서 능력가설을 약화시키고자 했다. 다른 하나는 스탠리와 윌리엄슨의 반론인데 그들은 메리가 획득하는 능력이 “노우-하우”에 해당하며 이는 사실상 명제적 지식으로 환원되는 것임을 보임으로써 능력가설을 반박하고자 했다. 본 논문은 능력가설에 대한 이 두 중요한 반론에 적절한 재반론을 펼쳐서 능력가설의 위상을 복원하는 것을 목표로 한다. 첫 번째 비판에 대해서 (...) 본 논문은 메리가 능력 외에 획득하는 것은 “지시적 지식”에 해당하는 것으로서 현상적 지식과는 다소 무관한 것이라고 주장한다. 두 번째 비판에 대해서는 능력가설에서 “상상의 능력”을 제외함으로써 스탠리와 윌리엄슨의 반론에 대처할 수 있다고 주장한다. (shrink)

The Perceptual Hypothesis is that we sometimes see, and thereby have non-inferential knowledge of, others' mental features. The Perceptual Hypothesis opposes Inferentialism, which is the view that our knowledge of others' mental features is always inferential. The claim that some mental features are embodied is the claim that some mental features are realised by states or processes that extend beyond the brain. The view I discuss here is that the Perceptual Hypothesis is plausible if, but only if, (...) the mental features it claims we see are suitably embodied. Call this Embodied Perception Theory. I argue that Embodied Perception Theory is false. It doesn't follow that the Perceptual Hypothesis is implausible. The considerations which serve to undermine Embodied Perception Theory serve equally to undermine the motivations for assuming that others' mental lives are always imperceptible. (shrink)