Online research in philosophy

According to the "experimenter's regress", disputes about the validity of experimental results cannot be closed by objective facts because no conclusive criteria other than the outcome of the experiment itself exist for deciding whether the experimental apparatus was functioning properly or not. Given the frequent characterization of simulations as "computer experiments", one might worry that an analogous regress arises for computer simulations. The present paper analyzes the most likely scenarios where one might expect such a "simulationist's (...) class='Hi'>regress" to surface, and, in doing so, discusses analogies and disanalogies between simulation and experimentation. I conclude that, on a properly broadened understanding of robustness, the practice of simulating mathematical models can be seen to have sufficient internal structure to avoid any special susceptibility to regress-like situations. (shrink)

In the first part of this paper, I will sketch the main features of traditional models of evidence, indicating idealizations in such models that I regard as doing more harm than good. I will then proceed to elaborate on an alternative model of evidence that is functionalist, complex, dynamic, and contextual, which I will call DYNAMIC EVIDENTIAL FUNCTIONALISM. I will demonstrate its application to an illuminating example of scientific inquiry, and defend it from some likely objections. In the second part, (...) I will use that alternative to solve a variety of classic and contemporary problems in the literature on scientific evidence having to do with the empirical basis of science and the use of evidence in public policy. (shrink)

Contemporary ways of understanding of science, especially in the philosophy of science, are beset by overly abstract and formal models of evidence. In such models, the only interesting feature of evidence is that it has a one-way ``support'' relation to hypotheses, theories, causal claims, etc. These models create a variety of practical and philosophical problems, one prominent example being the experimenter's regress. According to the experimenter's regress, good evidence is produced by good techniques, but which techniques (...) are good is only determined by whether they produce the evidence we expect. The best answer to this problem within the traditional approach relies on the concept of robust evidence, but this answer ultimately falls flat because it creates impossible requirements on good evidence. The problem can more easily be solved by rejecting abstract, formalistic models of evidence in favor of a model of inquiry which pays attention to the temporal complexity of the process of inquiry and the distinction between observational and experimental evidence. (shrink)

I will divide my discussion into two. In the first part I will discuss Godin and Gingras's delicious claim (this volume) that the experimenter's regress is anticipated by Sextus Empiricus's formulation of scepticism. In the second part, I will try to deal with Godin and Gingras's 'critical argument', that the experimenter's regress would be redundant if we were less concerned with 'frightening philosophers'.

Robustness is a common platitude: hypotheses are better supported with evidence generated by multiple techniques that rely on different background assumptions. Robustness has been put to numerous epistemic tasks, including the demarcation of artifacts from real entities, countering the “experimenter’s regress,” and resolving evidential discordance. Despite the frequency of appeals to robustness, the notion itself has received scant critique. Arguments based on robustness can give incorrect conclusions. More worrying is that although robustness may be valuable in ideal evidential circumstances (...) (i.e., when evidence is concordant), often when a variety of evidence is available from multiple techniques, the evidence is discordant. †To contact the author, please write to: Jacob Stegenga, Department of Philosophy, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093; e‐mail: jstegenga@ucsd.edu. (shrink)

As is well known, Alan Turing drew a line, embodied in the "Turing test," between intellectual and physical abilities, and hence between cognitive and natural sciences. Less familiarly, he proposed that one way to produce a "passer" would be to educate a "child machine," equating the experimenter's improvements in the initial structure of the child machine with genetic mutations, while supposing that the experimenter might achieve improvements more expeditiously than natural selection. On the other hand, in his foundational "On (...) the chemical basis of morphogenesis," Turing insisted that biological explanation clearly confine itself to purely physical and chemical means, eschewing vitalist and teleological talk entirely and hewing to D'Arcy Thompson's line that "evolutionary 'explanations,'" are historical and narrative in character, employing the same intentional and teleological vocabulary we use in doing human history, and hence, while perhaps on occasion of heuristic value, are not part of biology as a natural science. To apply Turing's program to recent issues, the attempt to give foundations to the social and cognitive sciences in the "real science" of evolutionary biology (as opposed to Turing's biology) is neither to give foundations, nor to achieve the unification of the social/cognitive sciences and the natural sciences. (shrink)

Recent studies of the social and political meanings of English science in the 17th century have often included only a cursory inspection of Locke's work. Conversely, detailed studies of Locke's theory of knowledge have tended to refrain from taking into serious consideration the social context of English science in that period. The paper explores the contribution of Locke's conception of experience to the rise of experimental philosophy as a new social force. It shows that Locke elaborated a doctrine that rendered (...) human experience the natural and nurtured means by which agents could discharge their duty to God and realize their right in God's dominion. Locke's account of the production of empirical knowledge thus delineated a theocentric system of a moral economy, which dovetailed with current advertisements of the new vocation of experimental philosophy. More particularly, Locke's debt to Boyle is manifested in their shared imagery of experience as a divine gift. While Boyle sought to encourage polite society to participate in cultivating the experimenter's gift, Locke propagated the view that proper conduct in the public sphere hinged on the recognition of the experimenter's findings as a new source of authority in everyday life. (shrink)

In recent literature there is unanimous agreement about children's pragmatic competence in drawing scalar implicatures about some , if the task is made easy enough. However, children accept infelicitous some sentences more often than adults do. In general their acceptance is assumed to be synonymous with a logical interpretation of some as a quantifier. But in our view an overlap with some as a determiner in under-informative sentences cannot be ruled out, given the ambiguity of the experimental instructions and the (...) attitude of trust by children in adults. Our study investigated this hypothesis with different experimental manipulations. We found that when the experimenter's intentions are clear (Experiment 1, all / some order effect; Experiments 2 and 4, conditions 2 and 3), under-informative sentences are usually rejected; otherwise (Experiment 1, some / all order effect; Experiments 3 and 4, control condition) they are accepted. However, analysis of verbal protocols indicated that pragmatically infelicitous sentences are accepted, with some interpreted mostly as a determiner, irrespective of the function of some as a quantifier. Acceptance is not in itself synonymous with a logical interpretation of some as a quantifier. (shrink)

A series of studies investigated the capacity of children between the ages of 7 and 12 to give free and informed consent to participation in psychological research. Children were reasonably accurate in describing the purpose of studies, but many did not understand the possible benefits or especially the possible risks of participating. In several studies children's consent was not affected by the knowledge that their parents had given their permission or by the parents saying that they would not be upset (...) if the children refused. In contrast, other studies found that children were much more likely to stop their participation if the experimenter said explicitly that she would not be upset if they stopped. We suggest that experimenters should pay more attention to describing the possible risks and benefits of participation in research, and that they should also make it clearer to children that they are free to stop once they have begun. (shrink)

It has long been known that scientists have a tendency to conduct experiments in a way that brings about the expected outcome. Here, we provide the first direct demonstration of this type of experimenter bias in experimental philosophy. Opposed to previously discovered types of experimenter bias mediated by face-to-face interactions between experimenters and participants, here we show that experimenters also have a tendency to create stimuli in a way that brings about expected outcomes. We randomly assigned undergraduate experimenters to receive (...) two different hypotheses about folk intuitions of consciousness, and then asked them to design experiments based on their hypothesis. Specifically, experimenters generated sentences ascribing intentional and phenomenal mental states to groups, which were later rated by online participants for naturalness. We found a significant interaction between experimenter hypothesis and participant ratings indicating a general tendency for experimenters to obtain the result that they expected. These results indicate that experimenter bias is a real problem in experimental philosophy since the methods and design employed here mirror the predominant survey methods of the field as a whole. The bearing of the current results on Knobe and Prinz’s (Phenomenology and Cognitive Science 7(1):67–83, 2008) group mind hypothesis is discussed, and new methods for avoiding experimenter bias are proposed. (shrink)

This essay equates Penrose's (1989) Emperor with the scientist engaging in mental (Schrödinger's cat) or real experiments.The simultaneous presence of apparently contradictory phase-spatial symmetry conditions on the various hierarchical levels of biological systems are seen as the result of genetic and neurophysiological information that interferes with the physico-chemical vectors between the structural components of the system, the experimenter being an integral part of this informational causality. Equations pertaining to the lowest structural levels of matter, therefore, may not be extendable over (...) higher levels of biological organization, including human science and technology, which are seen as part and parcel of biology. This situation calls for a formal theoretical biophysics which concentrates on macroscopic processes where life and, above all,Homo sapiens, is involved. (shrink)

Two experiments (N1 = 141, N2 = 40) investigate two versions of Aristotle’s Thesis for the first time. Aristotle’s Thesis is a negated conditional, which consists of one propositional variable with a negation either in the antecedent (version 1) or in the consequent (version 2). This task allows to infer if people interpret indicative conditionals as material conditionals or as conditional events. In the first experiment I investigate between-participants the two versions of Aristotle’s Thesis crossed with abstract versus concrete task (...) material. The modal response for all four groups is consistent with the conditional event and inconsistent with the material conditional interpretation. This observation is replicated in the second experiment. Moreover, the second experiment rules out scope ambiguities of the negation of conditionals. Both experiments provide new evidence against the material conditional interpretation of conditionals and support the conditional event interpretation. Finally, I discuss implications for modeling indicative conditionals and the relevance of this work for experimental philosophy. (shrink)

Joshua Glasgow argues against the existence of races. His experimental philosophy asks subjects questions involving racial categorization to discover the ordinary concept of race at work in their judgments. The results show conflicting information about the concept of race, and Glasgow concludes that the ordinary concept of race is inconsistent. I conclude, rather, that Glasgow’s results fit perfectly fine with a social-kind view of races as real social entities. He also presents thought experiments to show that social-kind views give the (...) wrong results, but intuitions might differ on which results are the wrong ones, and social-kind views can resist the implications he derives from these cases. Widespread false beliefs about a concept or category need not undermine anything’s existence, and a sufficiently context-sensitive approach to races will allow for competing criteria for race-membership in different contexts without contradictory criteria in any one context. Glasgow’s arguments are therefore unsuccessful. (shrink)

: William James's "The Will to Believe" has been criticized for offering untenable arguments in support of belief in unvalidated hypotheses. Although James is no longer accused of suggesting we can create belief ex nihilo, critics continue to charge that James's defense of belief in what he called the "religious hypothesis" confuses belief with hypothesis adoption and endorses willful persistence in unvalidated beliefs—not, as he claimed, in pursuit of truth, but merely to avoid the emotional stress of abandoning them. I (...) argue that James's position in "The Will to Believe" can be defended provided we give up thinking of it as ethics of belief and think of it instead as an ethics of self-experimentation. Subjective data (including wants, needs, and desires) are relevant to rational consent to participation in research. (shrink)

I offer an appreciation and critique of Ernst Fehr’s altruism research in experimental economics that challenges the "selfishness axiom" as an account of human behavior. I describe examples of Fehr’s experiments and their results and consider his conceptual terminology, particularly his "biological" definition of altruism and its counterintuitive implications. I also look at Fehr’s experiments from a methodological perspective and examine his explanations of subjects’ behavior. In closing, I look at Fehr’s neuroscientific work in experimental economics and question his adherence (...) to a subjective expected utility interpretation of subjects’ behavior. Key Words: altruism • Ernst Fehr • strong reciprocity • neuroeconomics • experimental economics. (shrink)

In this paper I claim that Hegel's emergent and dialectical understanding of self-consciousness occurs in the thought of John Dewey, albeit in naturalized form. Hegel's Phenomenology of Spirit and Dewey's talk of the self, consciousness, and self-consciousness as it is developed in Experience and Nature together with some attention to Dewey's other great experiential text Art as Experience, will form the contexts for my claim. I do not argue that Dewey reproduces Hegel's dialectic or that Dewey's notion of self-consciousness emerges (...) as isomorphic with Hegel's own. In fact, Dewey's understanding of consciousness and self-consciousness lead me to conclude that for Dewey these are roughly equivalent to experimental .. (shrink)

Six experiments investigated 7-month-old infants’ capacity to learn about the self-propelled motion of an object. After observing 1 wind-up toy animal move on its own and a second wind-up toy animal move passively by an experimenter’s hand, infants looked reliably longer at the former object during a subsequent stationary test, providing evidence that infants learned and remembered the mapping of objects and their motions. In further experiments, infants learned the mapping for different animals and retained it over a 15-min delay, (...) providing evidence that the learning is robust and infants’ expectations about self-propelled motion are enduring. Further experiments suggested that infants’ learning was less reliable when the self-propelled objects were novel or lacked faces, body parts, and articulated, biological motion. The findings are discussed in relation to infants’ developing knowledge of object categories and capacity to learn about objects in the first year of life. (shrink)

Although chimpanzees have been reported to understand to some extent others' visual perception, previous studies using food requesting tasks are divided on whether or not chimpanzees understand the role of eye gaze. One plausible reason for this discrepancy may be the familiarity of the testing situation. Previous food requesting tasks with negative results used an unfamiliar situation that may be difficult for some chimpanzees to recognize as a requesting situation, whereas those with positive results used a familiar situation. The present (...) study tested chimpanzees' understanding of others' attentional states by comparing two requesting situations: an unfamiliar situation in which food was put on a table, and a familiar situation in which chimpanzees requested food held by an experimenter. Chimpanzees showed evidence of understanding the experimenter's attentional variations and the role of eye gaze only in the latter task. This suggests that an unfamiliar requesting situation may keep subjects from expressing their understanding of others' attentional states even though they are sensitive to them. Keywords: Understanding attention; Social cognition; Chimpanzees. (shrink)

One of the most notorious — and dismissive — passages in Wittgenstein’s Philosophical Investigations is Part II section xiv, which begins like this: The confusion and barrenness of psychology is not to be explained by calling it a “young science”; its state is not comparable with that of physics, for instance, in its beginnings. (Rather with that of certain branches of mathematics. Set theory.) For in psychology there are experimental methods and conceptual confusion. (As in the other case conceptual confusion (...) and methods of proof.) The existence of the experimental method makes us think we have the means of solving the problems which trouble us; though problem and method pass one another by. Strong words. But we know that at one stage in his life Wittgenstein’s interest in psychology was sufficient for him to have done some experimental research, and that he was well acquainted with the work of at least some of the prominent psychologists active in his own lifetime. That is, his quoted remarks were not made from ignorance; and we should accordingly take them seriously enough to consider why he made them, what he had in mind, and to what extent — if any — they may have been (and, though this was all a long time ago, may still be) justified. (shrink)

E. Schrödinger's ideas on interpreting quantum mechanics have been recently re-examined by historians and revived by philosophers of quantum mechanics. Such recent re-evaluations have focused on Schrödinger's retention of space–time continuity and his relinquishment of the corpuscularian understanding of microphysical systems. Several of these historical re-examinations claim that Schrödinger refrained from pursuing his 1926 wave-mechanical interpretation of quantum mechanics under pressure from the Copenhagen and Göttingen physicists, who misinterpreted his ideas in their dogmatic pursuit of the complementarity doctrine and the (...) principle of uncertainty. My analysis points to very different reasons for Schrödinger's decision and, accordingly, to a rather different understanding of the dialogue between Schrödinger and N. Bohr, who refuted Schrödinger's arguments. Bohr's critique of Schrödinger's arguments predominantly focused on the results of experiments on the scattering of electrons performed by Bothe and Geiger, and by Compton and Simon. Although he shared Schrödinger's rejection of full-blown classical entities, Bohr argued that these results demonstrated the corpuscular nature of atomic interactions. I argue that it was Schrödinger's agreement with Bohr's critique, not the dogmatic pressure, which led him to give up pursuing his interpretation for 7 yr. Bohr's critique reflected his deep understanding of Schrödinger's ideas and motivated, at least in part, his own pursuit of his complementarity principle. However, in 1935 Schrödinger revived and reformulated the wave-mechanical interpretation. The revival reflected N. F. Mott's novel wave-mechanical treatment of particle-like properties. R. Shankland's experiment, which demonstrated an apparent conflict with the results of Bothe–Geiger and Compton–Simon, may have been additional motivation for the revival. Subsequent measurements have proven the original experimental results accurate, and I argue that Schrödinger may have perceived even the reformulated wave-mechanical approach as too tenuous in light of Bohr's critique. (shrink)

As Laudan and Fine show, and Boyd concedes, the attempt to infer the truth of scientific realism from the fact that it putatively provides the best explanation of the instrumental success of science is circular, since what is to be shown is precisely the legitimacy of such abductive inferences. Hacking's "experimental argument for scientific realism about entities" is one of the few arguments for scientific realism that purports to avoid this circularity. We argue that Hacking's argument is as dependent on (...) inference to the best explanation (IBE), and therefore as weak, as the other realist arguments. (shrink)

Harry Collins' central argument about experimental practice revolves around the thesis that facts can only be generated by good instruments but good instruments can only be recognized as such if they produce facts. This is what Collins calls the experimenters' regress. For Collins, scientific controversies cannot be closed by the 'facts' themselves because there are no formal criteria independent of the outcome of the experiment that scientists can apply to decide whether an experimental apparatus works properly or not.No one (...) seems to have noticed that the debate is in fact a rehearsal of the ancient philosophical debate about skepticism. The present article suggests that the way out of radical skepticism offered by the so-called mitigated skeptics is a solution to the problem of consensus formation in science. (shrink)

This article explores Michael Faraday’s “Historical Sketch of Electro‐Magnetism” as a fruitful source for understanding the epistemic significance of experimentation. In this work Faraday provides a catalog of the numerous experimental and theoretical developments in the early history of electromagnetism. He also describes methods that enable experimentalists to dissociate experimental results from the theoretical commitments generating their research. An analysis of the methods articulated in this sketch is instructive for confronting epistemological worries about the theory‐dependence of experimentation. †To contact the (...) author, please write to: 10289 Saint Katherine Lane, Saint Ann, MO 63074; e‐mail: adcobb@gmail.com. (shrink)

This paper offers an experimental test of a version of Rubinstein’s bargaining model in which the players’ discount factors are unequal. We find that learning, rationality, and fairness are all significant in determining the outcome. In particular, we find that a model of myopic optimization over time predicts the sign of deviations in the opening proposal from the final undiscounted agreement in the previous period rather well. To explain the amplitude of the deviations, we then successfully fit a perturbed version (...) of the model of myopic adjustment to the data that allows for a bias toward refusing inequitable offers. (shrink)

In this article I attempt to reconstruct David Hume's use of the label ?experimental? to characterise his method in the Treatise. Although its meaning may strike the present-day reader as unusual, such a reconstruction is possible from the background of eighteenth-century practices and concepts of natural inquiry. As I argue, Hume's inquiries into human nature are experimental not primarily because of the way the empirical data he uses are produced, but because of the way those data are theoretically processed. He (...) seems to follow a method of analysis and synthesis quite similar to the one advertised in Newton's Opticks, which profoundly influenced eighteenth-century natural and moral philosophy. This method brings him much closer to the methods of qualitative, chemical investigations than to mechanical approaches to both nature and human nature. (shrink)

In his influential book, "Changing Order", H.M. Collins puts forward the following three claims concerning experimental replication. (i) Replication is rarely practiced by experimentalists; (ii) replication cannot be used as an objective test of scientific knowledge claims, because of the occurrence of the so-called experimenters' regress; and (iii) stopping this regress at some point depends upon the enculturation in a local community of practitioners, who tacitly learn the relevant skills. In my paper I discuss and assess these claims (...) on the basis of a more comprehensive analysis of experimentation and experimental reproducibility. The main point is that Collins' claims are not, strictly speaking, wrong, but rather too one-sided and therefore inadequate. This point also calls for a reconsideration of the radical (social constructivist) conclusions that Collins has drawn from his studies of scientific experimentation. (shrink)

In the early eighteenth century, chemistry became the main academic locus where, in Francis Bacon's words, Experimenta lucifera were performed alongside Experimenta fructifera and where natural philosophy was coupled with natural history and 'experimental history' in the Baconian and Boyleian sense of an inventory and exploration of the extant operations of the arts and crafts. The Dutch social and political system and the institutional setting of the university of Leiden endorsed this empiricist, utilitarian orientation toward the sciences, which was forcefully (...) propagated by one of the university's most famous representatives in the first half of the eighteenth century, the professor of medicine, botany and chemistry Herman Boerhaave. Recent historical investigations on Boerhaave's chemistry have provided important insights into Boerhaave's religious background, his theoretical and philosophical goals, and his pedagogical agenda. But comparatively little attention has been paid to the chemical experiments presented in Boerhaave's famous chemical textbook, the Elementa chemiae, and to the question of how these experiments relate not only to experimental philosophy but also to experimental history and natural history, and to contemporary utilitarianism. I argue in this essay that Boerhaave shared a strong commitment to Baconian utilitarianism and empiricism with many other European chemists around the middle of the eighteenth century, in particular to what Bacon designated 'experimental history' and I will provide evidence for this claim through a careful analysis of Boerhaave's plant-chemical experiments presented in the Elementa chemiae. (shrink)

A notion of experimental series is developed, in which experiments or experimental sets are connected through experimental suggestions arising from previous experimental outcomes. To that end, the justification of Howard Temin’s DNA provirus hypothesis is examined. The hypothesis originated with evidence from two exploratory experimental sets on an oncogenic virus and was substantiated by including evidence from three additional experimental sets. Collectively these sets comprise an experimental series and the accumulative evidence from the series was adequate to justify the hypothesis (...) by persuading the virology community of its veracity. The notion of crucial experiment is also discussed in terms of experimental series. (shrink)

This paper argues that Michel Foucault explicitly rejected the model of critique by which he is often understood—by both his defenders and detractors. Rather than justifying norms that could be said to represent “the people;” judging institutions, norms, and practices accordingly; and creating programs for others to enact, he theorized and practiced an experimental social criticism in which specific intellectuals help people work through “intolerable” situations by multiplying the ways they can think about and act upon them. As Foucault’s work (...) with the prisons in France shows, one way intellectuals can be part of the experimental transformations social bodies carry out upon themselves is through genealogical work describing the ways problems have come to be identified—and can thus be transformed. This account of criticism undercuts the problem of justifying a standpoint of critique that has plagued philosophers and suggests a few concrete means of better aligning theory and practice. (shrink)

Although theoretical results for several algorithms in many application domains were presented during the last decades, not all algorithms can be analyzed fully theoretically. Experimentation is necessary. The analysis of algorithms should follow the same principles and standards of other empirical sciences. This article focuses on stochastic search algorithms, such as evolutionary algorithms or particle swarm optimization. Stochastic search algorithms tackle hard real-world optimization problems, e.g., problems from chemical engineering, airfoil optimization, or bio-informatics, where classical methods from mathematical optimization fail. (...) Nowadays statistical tools that are able to cope with problems like small sample sizes, non-normal distributions, noisy results, etc. are developed for the analysis of algorithms. Although there are adequate tools to discuss the statistical significance of experimental data, statistical significance is not scientifically meaningful per se. It is necessary to bridge the gap between the statistical significance of an experimental result and its scientific meaning. We will propose some ideas on how to accomplish this task based on Mayo’s learning model (NPT*). (shrink)

Edgar Zilsel offers a Marxist account of the rise of experimental science avoiding both crude determinism and the anti-scientific bias of much “Western Marxism.” This account supplements Don Ihde’s instrumental realism with a social account of the systematic extension of perception by instrumentation. The social contact of non-literate craftspeople with purely intellectual scholars forged the social basis of what became technoscience.

Much of the early history of developmental and physiological genetics in Germany remains to be written. Together with Carl Correns and Richard Goldschmidt, Alfred Kühn occupies a special place in this history. Trained as a zoologist in Freiburg im Breisgau, he set out to integrate physiology, development and genetics in a particular experimental system based on the flour moth Ephestia kühniella Zeller. This paper is meant to reconstruct the crucial steps in the experimental pathway that led Kühn and his (...) collaborators at the University of Göttingen, and later at the Kaiser Wilhelm Institutes of Biology and Biochemistry in Berlin, to formulate, in their specific way, what later became known as the "one gene-one enzyme hypothesis." Special attention will be given to the interaction of the different parts of Kühn's Ephestia-based project, which were rooted in different research traditions. The paper retraces how, roughly between 1925 and 1945, these elements came to form a mixed experimental setup composed of genetic, embryological, physiological and, finally, biochemical constituents. Accordingly, emphasis is laid on the development of the terminology in which the results were cast, and how it reflected the hybrid state of an experimental system successively acquiring new epistemic layers. (shrink)

In this article I try to emphasise the following three main points: 1. Brentano's metaphysics is not speculative; it is instead a programme for scientific research. 2. Some components of his metaphysics, especially those relating to the problem of perceptive continua -- and many aspects of it developed experimentally by his pupils -- are today discussed not only by philosophy but also by the cognitive sciences, more or less accurately, more or less consciously. 3. Some areas of the cognitive sciences (...) express the need for a scientifically -- even neurophysiologically -- founded theory of intentionality. (shrink)

Following an on-line dialogue with Dennett (Velmans, 2001) this paper examines the similarities and differences between heterophenomenology (HP) and critical phenomenology (CP), two competing accounts of the way that conscious phenomenology should be, and normally is incorporated into psychology and related sciences. Dennett’s heterophenomenology includes subjective reports of conscious experiences, but according to Dennett, first person conscious phenomenena in the form of “qualia” such as hardness, redness, itchiness etc. have no real existence. Consequently, subjective reports about such qualia should be (...) understood as prescientific attempts to make sense of brain functioning that can be entirely understood in third person terms. I trace the history of this position in behaviourism (Watson, Skinner and Ryle) and early forms of physicalism and functionalism (Armstrong), and summarise some of the difficulties of this view. Critical phenomenology also includes a conventional, third person, scientific investigation of brain and behaviour that includes subjects’ reports of what they experience. CP is also cautious about the accuracy or completeness of subjective reports. However, unlike HP, CP does not assume that subjects are necessarily deluded about their experiences or doubt that these experiences can have real qualities that can, in principle, be described. Such experienced qualities cannot be exhaustively reduced to third-person accounts of brain and behaviour. CP is also reflexive, in it assumes experimenters to have first-person experiences that they can describe much as their subjects do. And crucially, experimenter’s third-person reports of others are based, in the first instance, on their own first-person experiences. CP is commonplace in psychological science, and given that it conforms both to scientific practice and common sense, I argue that there is little to recommend HP other than an attempt to shore up a counterintuitive, reductive philosophy of mind. (shrink)

Entanglement has long been the subject of discussion by philosophers of quantum theory, and has recently come to play an essential role for physicists in their development of quantum information theory. In this paper we show how the formalism of algebraic quantum field theory (AQFT) provides a rigorous framework within which to analyse entanglement in the context of a fully relativistic formulation of quantum theory. What emerges from the analysis are new practical and theoretical limitations on an experimenter's ability (...) to perform operations on a field in one spacetime region that can disentangle its state from the state of the field in other spacelike-separated regions. These limitations show just how deeply entrenched entanglement is in relativistic quantum field theory, and yield a fresh perspective on the ways in which the theory differs conceptually from both standard non-relativistic quantum theory and classical relativistic field theory. (shrink)

Hans Joas has called the German reception of pragmatism “a history of misunderstandings.” This is certainly true of the Frankfurt School’s reception of John Dewey’s work. Even as early as Lukács’ History and Class Consciousness, which exercised such an influence on the western Marxism of the Frankfurt School, pragmatism is taken as a willful abandonment of reason’s highest purpose. Pragmatism is equated with relativism and is only able to conceive of freedom within the gaps of a reified society (1971: 194– (...) 195). Adorno, seemingly the most receptive to Dewey’s thought, believed pragmatism to be the a priori exclusion of metaphysics (1973: 373). Marcuse, the subject of this introduction, reviewed Dewey’s Theory of .. (shrink)

Abstract In this study of the relationship between moral behaviour, level of moral development, and motivation, moral behaviour was assessed in an experimental situation in which it was necessary to violate the experimenter's authority to help someone; level of moral development was assessed by Kohlberg's Moral Judgment Scale, and motivation by a post?experimental interview. Although 72 per cent of the subjects stated afterwards that they felt that they should help, only 43 per cent did, and only 6 per cent (...) volunteered their own service. As the level of moral development rose, an increasing percentage of subjects helped. Subjects interpreted the same situation differently and were motivated to make the same response for different reasons, which varied with their level of moral development. (shrink)

Both during and after his long career, many political philosophies have been attributed to John Dewey. Perhaps most familiarly, Dewey is seen as a kind of communitarian or participatory democrat who provides a rich account of human nature requiring a moral state.2 Rob Talisse, for example, defines “Deweyan Democracy” as “a style of substantive democratic theory which emphasizes citizen participation in the shared cooperative undertaking of self-government at all levels of social association” (2003, 1). On this reading, Dewey’s account of (...) “thick” terms like “community” or “growth” and his inter-subjective view of human nature provide philosophical grounds for the normative superiority of participatory democracy. If .. (shrink)

: Metrology is a discipline of expunging impurities. The mid-nineteenth century French physicist Henri-Victor Regnault created a whole new way of doing experiments, attempting to produce standards physically by the "direct method." His immodest ambition to control all disturbing parameters represents a relict in the physical sciences of Romantic hopes for an all-embracing, artistic and aesthetic approach to nature, expressed in the absolute, eternal determination of nature's constants and their numerical relationships. The novelist Gustave Flaubert, whose rejection of metaphysics, love (...) for finest detail, concern for impartial treatment of the human psyche, and perfectionism, made him Regnault's literary complement, likewise hoped for this utopian union of science and art. There is a romantic and a modern ring to their ideals which were not to be achieved by optimism, but by introducing systematic doubt, by thoroughly studying impurities and expunging them. Nature did not speak clearly, but hid behind a multitude of disturbing effects—revealed only by the experimenter's or writer's voluntary restraint and self-denial, a disinterestedness Regnault and Flaubert celebrated as the highest and holiest morality. For them, attention to secondary matters became primary, because they expected them to lead the way to the grail. (shrink)

Language pragmatics is applied to analyse problem statements and instructions used in a few influential experimental tasks in the psychology of reasoning. This analysis aims to determine the interpretation of the task which the participant is likely to construct. It is applied to studies of deduction (where the interpretation of quantifiers and connectives is crucial) and to studies of inclusion judgment and probabilistic judgment. It is shown that the interpretation of the problem statements or even the representation of the task (...) as a whole often turn out to differ from the experimenter's assumptions. This has serious consequences for the validity of these experimental results and therefore for the claims about human irrationality based on them. (shrink)

Most students are trained in using but not in actively choosing a research methodology. I support Hertwig and Ortmann's call for more rationality in the use of methodology. I comment on additional practices that sacrifice experimental control to the experimenter's convenience, and on the strange fact that such laissez-faire attitudes and rigid intolerance actually co-exist in psychological research programs.

This paper characterizes the role of the experimenter in causal explanations of laboratory phenomena. Causal explanation rests on appeals to the experimenter's efficacy as a causal agent. I contrast "demographic" and "genetic" explanations of stochastic outcomes in a set of competition experiments in ecology. The demographic view ascribes causes to the experimenter's agency in setting up the experiment and to events within the experimental set-up. The genetic view ascribes causes to an unrecognized effect of the experimenter's sampling (...) process prior to the experimental set-up. (shrink)

There are two uses of randomization in efforts to control systematic bias in experimental design: (a) Alchemical uses seek to convert unavoidable systematic errors into random errors. (b) Hygienic uses seek to reduce the prospect of the experimenter's involvement with the implementation of the experiment contributing to bias. A few remarks are made at the end of the paper about the hygienic use of randomization as a preventative against sticky fingers. The bulk of the discussion addresses the alchemical applications. (...) The thesis is that attitudes towards the cogency of Fisher's alchemical use of randomization ought to depend on views concerning statistical deduction or direct inference. (shrink)

When an experimenter uses the experimental method to investigate the effects of the experimenter's expectancy it may be that this research, too, is affected by his expectancy and thus there is an expectancy paradox. To the extent that the experimenter expectancy effect accounts for the variation in the dependent variable and is general, that is to say, universal in psychological research, the expectancy paradox is ineluctable. However, an analysis of the research reviews extant in this area yields the conclusion (...) that expectancy effects are neither inexorable nor highly general in psychological research and this provides the basis for its extrication from the expectancy paradox. (shrink)

Evidence that led to the hypothesis of a backwards referral of conscious sensory experiences in time, and the experimental tests of its predictions, is summarized. Criticisms of the data and the conclusion by Churchland that this hypothesis is untenable are analysed and found to be based upon misconceptions and faulty evaluations of facts and theory. Subjective referral in time violates no neurophysiological principles or data and is compatible with the theory of "mental" and "physical" correspondence.

This article outlines in details specific experiments that Galen performed. It explores how his methodology for experimentation was a sophisticated response to the rationalist-empirist debate as it occurred in ancient medicine. -/- .

While Ludwik Fleck's Genesis and Development of a Scientific Fact is mainly concerned with social elements in science, a central argument depends on his case study of the development of a serum test for syphilis, the Wasserman Reaction, which Fleck argues was the product of skill and of laboratory practice, not a simple discovery. Ian Hacking interprets the creation of new phenomena in science very differently, arguing that it can seen as an argument for scientific realism. Hacking's argument shows that (...) Fleck's case study does not lead to the conclusion Fleck expects, and may solve one of the main problems in Fleck's work, how to define an objective element of knowledge. (shrink)

Experiments in which subjects play simultaneously several finite two-person prisoner's dilemma supergames with and without an outside option reveal that: (i) an attractive outside option enhances cooperation in the prisoner's dilemma game, (ii) if the payoff for mutual defection is negative, subjects' tendency to avoid losses leads them to cooperate; while this tendency makes them stick to mutual defection if its payoff is positive, (iii) subjects use probabilistic start and endeffect behavior.

In this paper I discuss Newton's first optical paper. My aim is to examine the type of argument which Newton uses in order to convince his readers of the truth of his theory of colors. My claim is that this argument is an induction by elimination, and that the Newtonian method of justification is a kind of generative justification, a term due to T. Nickles. To achieve my aim I analyze in some detail the arguments in Newton's first optical paper, (...) relating the paper with Newton's other writings in optics, and especially his early correspondence in defence of his theory of colors. (shrink)

Romantic Naturphilosophie has been at the centre of almost every account of early nineteenth-century sciences, be it as an obstacle or as an aid for scientific advancement. The following paper suggests a change of perspective. I seek to read Naturphilosophie as one manifestation among others of a more general concern with the question of how experience enables the subject to acquire knowledge about objects. To illustrate such an approach, I focus on Johannes Muller's early work. Here one finds two contrasting (...) images of microscopical observation, its set-up, and the observer: the embryological study of 1830 demands a 'philosophical grasp' of the appearances. In contrast, the investigations of blood of 1832 are presented as a series of controlled experiments. I argue that an interpretation of this contrast in terms of an appropriation and casting aside of Naturphilosophie is not altogether convincing. Instead, both images of microscopy are manifestations of a more general problem, namely, the problem of exactly how subject and object came together in experience. I show how this concern not only shaped the methodological sensibilities particular to Muller's embryology and the investigation of bodily liquids but also provided the epistemological principles and the target for his sense-physiological experiments. It bound Muller's work together with Naturphilosophie and linked Naturphilosophie with other contemporaneous projects in philosophy. All of these enterprises sought to contribute to ongoing debates about how experience allowed the subject to acquire knowledge about the world. (shrink)

The two theories that revolutionized physics in the twentieth century, relativity and quantum mechanics, are full of predictions that defy common sense. Recently, we used three such paradoxical ideas to prove “The Free Will Theorem” (strengthened here), which is the culmination of a series of theorems about quantum mechanics that began in the 1960s. It asserts, roughly, that if indeed we humans have free will, then elementary particles already have their own small share of this valuable commodity. More precisely, if (...) the experimenter can freely choose the directions in which to orient his apparatus in a certain measurement, then the particle’s response (to be pedantic—the universe’s response near the particle) is not determined by the entire previous history of the universe. Our argument combines the well-known consequence of relativity theory, that the time order of space-like separated events is not absolute, with the EPR paradox discovered by Einstein, Podolsky, and Rosen in 1935, and the Kochen-Specker Paradox of 1967 (See [2].) We follow Bohm in using a spin version of EPR and Peres in using his set of 33 directions, rather than the original configuration used by Kochen and Specker. More contentiously, the argument also involves the notion of free will, but we postpone further discussion of this to the last section of the article. Note that our proof does not mention “probabilities” or the “states” that determine them, which is.. (shrink)

Robert Fogelin agrees that arguments for Cartesian sceptism carry a heavy burden of theoretical commitment, for they take for granted, explicitly or implicitly, the foundationalist's idea that experimental knowledge is in some fully general way 'epistemologically prior' to knowledge of the world. He thinks, however, that there is a much more direct and commonsensical route to scepticism. Ordinary knowledge-claims are accepted on the basis of justificatory procedures that fall far short of eliminating all conceivable error-possibilities. As a result, it is (...) always possible, by bringing new errorpossibilities into play, to raise the 'level of scrutiny' to which a given knowledge-claim is subject, so that it no longer seems adequately justified. Philosophical theories of justification can be seen as attempts to repair this fragility of ordinary knowledge. But they fail, all succumbing to the Pyrrhonian modes of assumption, circularity or infinite regress. I argue that Fogelin's conception of varying levels of scrutiny leads at most to fallibilism and not to radical scepticism. More importantly, I show that changing the range of relevant defeaters to a given knowledge claim can do more that impose stricter standards for justification: it can change the subject by altering the direction of inquiry. We see from this that the introduction of 'sceptical hypotheses' (such as that Descartes's Evil Deceiver) are not best seen as raising standards to some maximal level but as introducing a new kind of evaluation which, without commitment to what I call 'epistemological realism,' does nothing to impugn the justificational status of ordinary knowledge-claims entered in ordinary contexts. (shrink)

This paper surveys a decade of philosophical discussion of laboratory science, and concludes with a bibliography. Among its topics are: (1) The historical emergence of distinct styles of experimental reasoning and practice; the relation of this to constructionalist theses. (2) The extension of Duhem's thesis to instruments and apparatus; not only are theory and observation malleable resources, but also the materiel with which one works. (3) The demarcation of science not by method or content, but by product; the creation of (...) phenomena. (4) The disunity of science; science conceived of as a motley of autonomous activities, not as hierarchy. (5) The need to rethink the idea of experiment as intervention; to replace the model of experimenter as master of nature by that of investigator as collaborator. (shrink)

I respond to H. M. Collins's claim (1985, 1990, 1993) that experimental inquiry cannot be objective because the only criterium experimentalists have for determining whether a technique is "working" is the production of "correct" (i.e., the expected) data. Collins claims that the "experimenters' regress," the name he gives to this data-technique circle, cannot be broken using the resources of experiment alone. I argue that the data-technique circle, can be broken even though any interpretation of the raw data produced by (...) techniques is theory-dependent. However, it is possible to break this circle by eliminating dependence on even those theoretical presuppositions that are shared by an entire scientific community through the use of multiple independently theory-dependent techniques to produce robust bodies of data. Moreover, I argue, that it is the production of robust bodies of data that convinces experimentalists of the objectivity of their data interpretations. (shrink)

Quantum mechanical measurements on a physical system are represented by observables - Hermitian operators on the state space of the observed system. It is an important question whether all observables may be realized, in principle, as measurements on a physical system. Dirac’s influential text ( [1], page 37) makes the following assertion on the question: The question now presents itself – Can every observable be measured? The answer theoretically is yes. In practice it may be very awkward, or perhaps even (...) beyond the ingenuity of the experimenter, to devise an apparatus which could measure some particular observable, but the theory always allows one to imagine that the measurement can be made. This Letter re-examines the question of whether it is possible, even in principle, to measure every quantum mechanical observable. Unexpectedly, ideas from com-. (shrink)

The modern physiological optics introduces the notions related to the conditions of fusion of binocular images by the concept of correspondence, due to Christiaan Huygens (1704), and by an experiment attributed to Christoph Scheiner (1619). The conceptualization of this experiment dates, in fact, back to Ptolemy (90-168) and Ibn al-Haytham (d. after 1040). The present paper surveys Ibn al-Haytham's knowledge about the mechanisms of binocular vision. The article subsequently explains why Ibn al-Haytham, a mathematician, but here an experimenter, did not (...) give the circular figure of the theoretical horopter, construction due to Gerhard Vieth (1818) and Johannes Müller (1826). But, on the other hand, it is clear that Ibn al-Haytham's experimental study puts in place the notion of corresponding points, the cases of homonymous and cross diplopia, and even prepares the discovery of Panum area. (shrink)

This paper describes the historical background and early formation of Wilhelm Johannsen's distinction between genotype and phenotype. It is argued that contrary to a widely accepted interpretation (For instance, W. Provine, 1971. "The Origins of Theoretical Population Genetics". Chicago: The University of Chicago Press; Mayr, 1973; F. B. Churchill, 1974. "Journal of the History of Biology" 7: 5-30; E. Mayr, 1982. "The Growth of Biological Thought," Cambridge: Harvard University Press; J. Sapp, 2003. Genesis. "The Evolution of Biology". New York: Oxford (...) University Press) his concepts referred primarily to properties of individual organisms and not to statistical averages. Johannsen's concept of genotype was derived from the idea of species in the tradition of biological systematics from Linnaeus to de Vries: An individual belonged to a group - species, subspecies, elementary species - by representing a certain underlying type (S. Müller-Wille and V. Orel, 2007. "Annals of Science" 64: 171-215). Johannsen sharpened this idea theoretically in the light of recent biological discoveries, not least those of cytology. He tested and confirmed it experimentally combining the methods of biometry, as developed by Francis Galton, with the individual selection method and pedigree analysis, as developed for instance by Louis Vilmorin. The term "genotype" was introduced in W. Johannsen's 1909 ("Elemente der Exakten Erblichkeitslehre". Jena: Gustav Fischer) treatise, but the idea of a stable underlying biological "type" distinct from observable properties was the core idea of his classical bean selection experiment published 6 years earlier (W. Johannsen, 1903. "Ueber Erblichkeit in Populationen und reinen Linien". "Eine Beitrag zur Beleuchtung schwebender Selektionsfragen," Jena: Gustav Fischer, pp. 58-59). The individual ontological foundation of population analysis was a self-evident presupposition in Johannsen's studies of heredity in populations from their start in the early 1890s till his death in 1927. The claim that there was a "substantial but cautious modification of Johannsen's phenotype-genotype distinction" (Churchill, 1974, p. 24) from a statistical to an individual ontological perspective derives from a misreading of the 1903 and 1909 texts. The immediate purpose of this paper is to correct this reading of the 1903 monograph by showing how its problems and results grow out of Johannsen's earlier work in heredity and plant breeding. Johannsen presented his famous selection experiment as the culmination of a line of criticism of orthodox Darwinism by William Bateson, Hugo de Vries, and others (Johannsen, 1903). They had argued that evolution is based on stepwise rather than continuous change in heredity. Johannsen's paradigmatic experiment showed how stepwise variation in heredity could be operationally distinguished from the observable, continuous morphological variation. To test Galton's law of partial regression, Johannsen deliberately chose pure lines of self-fertilizing plants, a pure line being the descendants in successive generations of one single individual. Such a population could be assumed to be highly homogeneous with respect to hereditary type, and Johannsen found that selection produced no change in this type. Galton, he explained, had experimented with populations composed of a number of stable hereditary types. The partial regression which Galton found was simply an effect of selection between types, increasing the proportion of some types at the expense of others. (shrink)

In three studies, factors influencing the incidence of fraudulent financial reporting were assessed. We examined (1) the effects of personal values and (2) codes of corporate conduct, on whether managers misrepresented financial reports. In these studies, executives and controllers were asked to respond to hypothetical situations involving fraudulent financial reporting procedures. The occurrence of fraudulent reporting was found to be high; however, neither personal values, codes of conduct, nor the interaction of the two factors played a significant role in fraudulent (...) financial reporting. (shrink)

The method of the philosophers of the future that Nietzsche heralds, but does not self-identify with, has not received the attention it deserves in the secondary literature. In this essay, I address this lacuna with an interpretation of the roles of the philosophers of the future that explains in what sense they are and are not (at)tempters. As free spirits, cultural physicians, and legislators, the philosophers of the future undertake experiments to acquire knowledge; hence, the philosophers of the future are (...) attempters. Nevertheless, it is also wrong to call them attempters; as educators, the philosophers of the future are tempters. (shrink)

An experimenter studies “sensorimotor contingencies”; the stimulus is primary and the subject's response consequential. But the subject, looking at the world from his or her distinctive viewpoint, is occupied with “motorsensory contingencies”; the response is now primary and the sensory consequential. These two categories are gathered together under the one term in the target article. This commentary disambiguates the confusion.

Statements that share an explanation tend to lend inductive support to one another. For example, being told that Many furniture movers have a hard time financing a house increases the judged probability that Secretaries have a hard time financing a house. In contrast, statements with different explanations reduce one another s judged probability. Being told that Many furniture movers have bad backs decreases the judged probability that Secretaries have bad backs. I pose two questions concerning such discounting effects. First, does (...) the reduction depend on explanations being mutually incompatible or does it occur when explanations are deemed irrelevant to one another? I found that a small discounting effect occurred with statements that were blatantly unrelated. However, the discounting effect also depended on a factor external to the argument being judged; the composition of the argument set. Second, are explanation effects attributable to changes in the belief afforded statements or to response-specific changes resulting from misunderstanding of the probability rating task or response bias? The results implicate changes in belief. Prior belief influenced conditional probability more than argument strength judgements, as it would if participants understood the tasks in the same way as the experimenter. Also, conditional probability true and false judgements were complementary, suggesting no response bias. (shrink)

The German–American physiologist Jacques Loeb (1859–1924) and the Polish embryologist Emil Godlewski, jr. (1875–1944) contributed many valuable works to the body of developmental biology. Jacques Loeb was world famous at the beginning of the twentieth century for his development and demonstration of artificial parthenogenesis in 1899 and his experiments on regeneration. He served as a role model for the younger Polish experimenter Emil Godlewski, who began his career as a researcher like Loeb at the Zoological Station in Naples. Following Godlewski’s (...) first visit to Naples in 1901 a close relationship between the two scientists developed. Until Loeb’s death in 1924 the two exchanged ideas via correspondence that was only interrupted during the First World War. The aim of the paper is to examine the transatlantic transfer of knowledge in the field of biological experimentation that was fostered by these two protagonists. Using a modification of Bruno Latour’s model of the ‘Circulatory System of Science’ as a heuristic tool, different mechanisms of scientific exchange are displayed. With the help of Loeb’s and Godlewski’s correspondence the role of scientific communities, methods, allies, the public and institutions in the process of knowledge transfer are analysed. Preconditions for success and failure in transferring science are examined. (shrink)

Introduction: The empiricists and their context -- Empiricism and the empiricists -- The intellectual background to the early modern empiricists -- Martin Luther and the Reformation -- Aristotelian cosmology and the scientific revolution -- Aristotelian/scholastic hylomorphism and the rise of mechanism -- The Royal Society of London -- Francis Bacon (1561-1626) -- The natural realm : the idols of the mind -- Idols of the tribe -- Idols of the cave -- Idols of the marketplace -- Idols of the theatre (...) -- Knowledge and experience : induction introduced -- Aristotelian/scholastic syllogisms : deductions dismissed -- Baconian empiricism : induction introduced -- Conclusion: Bacon the empiricist -- Thomas Hobbes (1588-1679) -- The natural realm : Hobbes's materialistic mechanism -- The importance of motion -- Sensation and the mind -- Knowledge and experience : definitions and the euclidean method -- Two kinds of knowledge and proper ratiocination -- The method of analysis and the method of synthesis -- Conclusion: Hobbes, the empiricist -- Pierre Gassendi (1592-1655) -- The natural realm : Gassendi's atomism -- The basic principles of Gassendi's atomism -- Atomistic sensation -- Knowledge and experience : the middle way to knowledge -- The sceptics are partly correct -- Knowledge regained? -- Conclusion: Gassendi. the empiricist -- Robert Boyle (1627-1691) -- The natural realm : Boyle's mechanism (corpuscularianism) -- The basic principles of Boyle's mechanism (or corpscularianism) -- Sensation and the mind -- Knowledge and experience : mechanism and the cautious experimenter -- The excellency of mechanism -- Experimentation and the status of mechanism -- Conclusion: Boyle, the empiricist -- John Locke (1632-1704) -- The natural realm : Locke's mechanism -- Against innatism -- Ideas and the tabula rasa -- Primary and secondary qualities, and our confused idea of substance -- Locke on power -- Knowledge and experience : Locke's epistemology -- Indirect realism, or the representational theory of perception -- The certainty of knowledge -- The origin of knowledge -- The extent of knowledge -- Conclusion: Locke, the empiricist -- Isaac Newton (1642-1727) -- The natural realm : Newton's principia -- A world of forces : universal gravitation -- What kind of quality is gravity? -- Mechanism and action at a distance -- Knowledge and experience : rules for the study of natural philosophy -- The four rules -- Whither natural philosophy -- Conclusion: Newton, the empiricist -- George Berkeley (1685-1753) -- The natural realm : Berkeley's idealism -- The world contains only souls and ideas -- Esse est percipi : two arguments for idealism/immaterialism -- Against the primary/secondary quality distinction -- Knowledge and experience : Berkeley's common sense epistemology -- Against the representational theory of perception -- Defeating the skeptic, and returning to common sense -- Mechanism, newtonianism, and instrumentalism : Berkeley on the new science -- Responses to popular objections -- Conclusion: Berkeley, the empiricist -- David Hume (1711-1776) -- The natural realm : Hume's psychological approach -- Ideas and impressions -- The principles of association -- Knowledge and experience : Hume's semi-scepticism -- Relations of ideas vs. matters of fact -- From matters of fact to cause and effect : Hume's first question -- Knowledge of cause and effect : Hume's second question -- The problem of induction : Hume's third question -- Hume's positive account of causation : induction regained -- Conclusion: Hume, the empiricist -- Empiricism and the empiricists : summary and conclusion. (shrink)