This essay examines some of the arguments in David Deutsch's book The Fabric of Reality , chief among them its case for the so-called many-universe interpretation of quantum mechanics (QM), presented as the only physically and logically consistent solution to the QM paradoxes of wave/particle dualism, remote simultaneous interaction, the observer-induced 'collapse of the wave-packet', etc. The hypothesis assumes that all possible outcomes are realized in every such momentary 'collapse', since the observer splits off into so many parallel, coexisting, but (...) epistemically non-interaccessible 'worlds' whose subsequent branchings constitute the lifeline-or experiential world-series- for each of those proliferating centres of consciousness. Although Deutsch concedes that his 'multiverse' theory is counter-intuitive, he none the less takes it to be borne out beyond question by the sheer observational/predictive success of QM and the conceptual dilemmas that supposedly arise with alternative (single-universe) accounts. Moreover, he claims the theory resolves a range of longstanding philosophical problems, notably those of mind/body dualism, the various traditional paradoxes of time, and the freewill/determinism issue. The essay suggests on the contrary, that Deutsch unwittingly transposes into the framework of presentday quantum debate speculative themes from the history of rationalist metaphysics, often with bizarre or philosophically dubious results, and that he rules out at least one promising rival account, namely Bohm's 'hidden variables' theory. It goes on to consider reasons for resistance to that theory among proponents of the 'orthodox' (Copenhagen) doctrine, and for the strong anti-realist, at times even irrationalist bias that has characterized much of this discussion since Bohr's debates with Einstein about quantum non-locality, observer-intervention, and the limits of precise measurement. Finally, the contrast is pointed out between Deutsch's ontologically extravagant use of the many-worlds hypothesis (akin to certain ideas advanced by speculative metaphysicians from Leibniz down) and those realist modes of counterfactual reasoning- e.g. in Kripke and the early Putnam- which deploy similar arguments to very different causal-explanatory ends. (shrink)

A British historian might be excused for looking slightly askance at any collection of recent books relating to the philosophy of history. This is because we have been told, several times over and by distinguished members of the profession, that such speculative and analytic activity has little, if anything, to do with the actual business of historiography. One of the most forthright warnings was delivered on the very first page of Professor G. R. Elton's The Practice of History (1967), when (...) we were advised that: ‘Every new number of History and Theory is liable to contain yet another article struggling to give history a philosophic base, and some of them are interesting. But they do not, I fear, advance the writing of history’. For Elton, therefore, there could be little point in granting his colleague in another discipline the right to assess the cognitive claims of historiography. The historian himself, and he alone, was qualified to determine, for all practical purposes, the aims and applications of historical method. It was left to the late Arnold Toynbee to diagnose (in Toynbee on Toynbee, 1974) the dangers in this protectionist approach. He claimed that Elton was ‘trying deliberately to create a closed circuit of “professional” historians’ which was, in his opinion, ‘fatal to any form of study’. But of course Toynbee's own lack of standing within the historical profession could be put forward as a telling index of the dangers of transgressing the barriers between history and philosophy. (shrink)

This paper aims to uncover the explanatory profile of an idealized version of Karl Ernst von Baer’s notion of individuation, wherein the special develops from the general. First, because such sequences can only be exemplified by a multiplicity of causally-related events, they should be seen as the topics of historical why-questions, rather than initial condition why-questions. Second, because historical why-questions concern the diachronic unity or genidentity of the events under consideration, I argue that the von Baerian pattern elicits a distinctive (...) response to such questions, wherein we are inclined to simultaneously affirm and reject the temporal unity of these events. I buttress this claim by considering non-biological expressions of the von Baerian principle, drawn from institutional history and literature. In the second half of the paper, I consider the implications of my findings for ontogenetic and phylogenetic sequences. I argue that the explanatory profile of von Baer’s principle neatly describes the distinctive speciation events that characterize deep metazoan phylogeny, as described by Stuart Newman. I also argue that parallel considerations should move us to accept a sense in which ontogenetic stages are not diachronically unified. (shrink)

This paper focuses on the discipline of history, its methods, subject, and output. A brief overview of contemporary analytic philosophy of history is provided, followed by critical discussion of historical realism. It is argued that the insistence on the idea that historians inquire into the real past and that they refer to the actual past entities, events, or agents is widely open to sceptical objections. The concept of an abstract historical chronicle of past events which are explained or retold by (...) historians is identified as misleading. The idea of historical antirealism is then introduced. It is argued that in the centre of historian’s attention are present phenomena that are identified as historical evidence and require historical explanation. Historical explanation consists of constituting an historical past—a fictional model that accounts for present data. The identification process of historical evidence and the discursive nature of historical enterprise are analysed and accompanied by several concrete examples. According to historical antirealism, historians are not interested in the real past, but in the present empirical data. In their pursuit of historical knowledge, they produce fictional models—an historical past. Lastly, several common caveats against historical antirealism are addressed. The historical antirealism is presented as a viable fictionalist account of the historical inquiry that is capable of avoiding sceptical attacks on historical method and it is argued that antirealism allows history to retain its worth as a distinctive kind of scientific discipline. (shrink)

This article considers historical facts and investigates the particular relationship between a factual and a valuative dimension within them. The operation is an autopsy of a particular historical fact, which works as an example. On this basis, the article will elucidate the similarities and the differences between historical facts and natural facts, with an emphasis on the observation that the former are more subject to the influence of interpretation than the latter. This feature of historical facts explains why social and (...) political struggles for recognition arise with respect to historical events. (shrink)

Classifying is a fundamental operation in the acquisition of knowledge. Taxonomic theory can help students of cognition, evolutionary psychology, ethology, anatomy, and sociobiology to avoid serious mistakes, both practical and theoretical. More positively, it helps in generating hypotheses useful to a wide range of disciplines. Composite wholes, such as species and societies, are “individuals” in the logical sense, and should not be treated as if they were classes. A group of analogous features is a natural kind, but a group of (...) homologous features is not. Imposing hypotheses justified only on the basis of nominalist, realist, phenomenalist, or conceptualist metaphysics upon the neurophysiology of organisms or upon the causes of behavior exemplifies the “psychologist's fallacy” of William James. Levels should be distinguished from their members and from classes of levels, and the ontological status of entities ranked at levels should be made clear. It is important not to confuse such categories as substance and process with one another. Several genetical terms, such as “gene” and chromosome,” are even more equivocal than has been realized. Discussions about units of selection, behavior, and thinking suffer from the ambiguity of a “unit of” an entity. An important source of misunderstanding about natural selection is the habit of treating it as an “agent”: in an important sense, natural selection does not “act” at all. (shrink)

Central to R. G. Collingwood's philosophy of history, and among the most controvrsial of his doctrines, is the contention that historical understanding requires a re-anactment of past experience or a re-thinking of past thought. Some critics have found this contention in it-self incoherent or otherwise unsatisfactory, even as applied to what Collingwood apparently regarded as paradigm cases of historical thinking: for example, accounting for Caesar's crossing of the Rubicon in terms of his political ambitions. Others, while accepting the applicability of (...) notions like re-enactment and re-thinking to such cases, have nevertheless rejected them as a basis for a general theory of historical understanding on the ground that their range of application is too narrow to encompass anything like the normal concerns of historians. In particular, these notions have been held to throw little light on what historians have had to say about largescale social events, conditions and processes. (shrink)

This paper argues that history differs from natural science in relying on folk psychology and so narrative explanations. In narratives, actions, beliefs, and pro-attitudes are joined by conditional and volitional connections. Conditional connections exist when beliefs and pro-attitudes pick up themes from one another Volitional connections exist when agents command themselves to do something having decided to do it because of a pro-attitude they hold. The paper defends the epistemic legitimacy of narratives by arguing we have legitimate grounds for postulating (...) conditional and volitional connections since they are given to us by a folk psychology we accept as true. (shrink)

The purpose of this essay is to defend the deductive-nomological model of explanation against a number of criticisms that have been made of it. It has traditionally been thought that scientific explanations were causal and that scientific explanations involved deduction from laws. In recent years, however, this three-fold identity has been challenged: there are, it is argued, causal explanations that are not scientific, scientific explanations that are not deductive, deductions from laws that are neither causal explanations nor scientific explanations, and (...) causal explanations that involve no deductions from laws. The aim of the present essay is to defend the traditional identities, and to show that the more recent attempts at invalidating them fail in their object. More specifically, this essay argues that a Humean version of the deductive-nomological model of explanation can be defended as the correct account of scientific explanation of individual facts and processes, and as the correct account of causal explanations of individual facts and processes. The deductive-nomological model holds that to explain an event E, say that a is G, one must find some initial conditions C, say that a is F, and a law or theory T such that T and C jointly entail E, and both are essential to the deduction. (shrink)