The transition to parenthood is both a joyous and a challenging event in a relationship. Studies to date have found mostly negative effects of the birth of the first child on the parental relationship. We propose that partners' pre-pregnancy individual happiness may serve as a buffer against these negative effects. We predicted that parents who are happy prior to pregnancy fare better in terms of relationship commitment after childbirth than unhappy parents. To test our prediction, we used data of a (...) 5-wave longitudinal study among 109 Dutch newlywed couples who had their first child during the study and a comparison group of 55 couples who remained childless. We found that the relationship commitment of fathers with higher pre-pregnancy happiness and fathers with a partner with higher pre-pregnancy happiness increased slightly in the years after childbirth, whereas the relationship commitment of fathers with lower pre-pregnancy happiness and fathers with a partner with lower pre-pregnancy happiness decreased. In addition, the relationship commitment of mothers with a happier partner prior to pregnancy decreased only slightly across the transition to parenthood but showed a steeper decline for mothers with a partner with average or lower pre-pregnancy happiness. In line with the idea that happiness acts as a resource when partners have to deal with relationship challenges, individual happiness predicted changes in relationship commitment for parents, but not for partners who remained childless. (shrink)

Previous research has demonstrated that trait self-control is related to a range of positive romantic relationship processes, suggesting that trait self-control should be positively and robustly linked to relationship satisfaction in both partners in a romantic relationship. However, the existing empirical evidence is limited and mixed, especially regarding partner effects. With three datasets of heterosexual couples, the present pre-registered studies examined: the dyadic associations between trait self-control and relationship satisfaction both cross-sectionally and longitudinally, and whether these effects hold when controlling (...) for both partners’ relationship commitment. The results indicated a cross-sectional positive actor effect, some support for a positive cross-sectional partner effect, and only little support for a longitudinal actor effect. After controlling for relationship commitment, all effects of trait self-control on satisfaction diminished except for a longitudinal actor effect among women in Study 2. Potential explanations for the current results, and implications for theory and practice, are discussed. (shrink)

We live within political systems that increasingly seek to control movement, organized around both the desire and ability to determine who is permitted to enter what sorts of spaces, from gated communities to nation-states. In _Movement and the Ordering of Freedom_, Hagar Kotef examines the roles of mobility and immobility in the history of political thought and the structuring of political spaces. Ranging from the writings of Locke, Hobbes, and Mill to the sophisticated technologies of control that circumscribe the (...) lives of Palestinians in the Occupied West Bank, this book shows how concepts of freedom, security, and violence take form and find justification via “regimes of movement.” Kotef traces contemporary structures of global mobility and resistance to the schism in liberal political theory, which embodied the idea of “liberty” in movement while simultaneously regulating mobility according to a racial, classed, and gendered matrix of exclusions. (shrink)

Looking at one site, the Israeli checkpoints in the occupied Palestinian territory, this article seeks to understand the mechanisms by which violence can present itself as justifiable (or justified), even when it materializes within frames presumably set to annul it. We look at the checkpoints as a condensed microcosmos operating within two such frames. One is the prolonged Israeli-Palestinian ‘peace process’ (the checkpoints became a primary technology of control in the period following the beginning of the peace process), and the (...) other is regulatory power (disciplinary and biopower), which in the Foucauldian framework presumably sidelines the violent form which sovereign power takes. We argue that the checkpoints, which dissect the Palestinian occupied territories into dozens of enclaves and which are one of the most effective and destructive means of control within the current stage of occupation, can be seen as more than obstacles in the way of Palestinian movement; we suggest that they also function as corrective technologies that are meant to fail. It is with this failure that violence can appear as justified. In order to show the operation of this embedded failure, we examine one mechanism operating within the checkpoints: ‘the imaginary line’. The imaginary line is both a component within, and an emblem of a mode of control that constantly undoes itself in order to summon violence. Since it is never visibly marked in the physical space, the imaginary line is bound to be unintentionally crossed, thereby randomly rendering Palestinians as ‘transgressors’ of the rule and thus facilitating eruptions of violence by the soldiers stationed at the checkpoints. This article proposes an analysis of this hidden demarcation of space in order to question the different relations between subjects and power which it both assumes and constitutes. (shrink)

This article tells the story of Ed Fredkin, a pilot, programmer, engineer, hardware designer and entrepreneur, whose work inside and outside academia has influenced major developments in computer science and in the foundations of theoretical physics for the past fifty years.

Drawing on feminist and queer critiques that see violence as constitutive of identities, this essay points to subject-positions whose construction is necessarily conditioned by exercising violence. Focusing on settler colonialism, I reverse the optics of the first set of critiques: rather than seeing the self as taking form through the injuries she suffers, I try to understand selves that are structurally constituted by causing injury to others. This analysis refuses the assumption that violence is in conflict with (liberal) identity, and (...) that, therefore, the endurance of violence of liberal states/societies is dependent upon mechanisms of active blindness (or denial, deferral, and other forms of dissociation). I argue that this assumption, which is shared by many critiques of violence, fails to perceive that people can desire the violent arrangements supporting their communities. They therefore fail to address political settings wherein violence is an affirmative element of political identities. (shrink)

Scientific realism is dead, or so many philosophers believe. Its death was announced when philosophers became convinced that one can accept all scientific results without committing oneself to metaphysical existence claims about theoretical entities (Fine 1986, 112). In addition, the inability of self–proclaimed scientific realists, despite recurrent demands, to distinguish themselves from their rival anti–realists (Stein 1989) didn’t exactly help their cause. If realists cannot identify the key feature or features that set them apart from their opponents, then there is (...) really no need to conduct a debate on scientific realism, is there? (shrink)

Quantum computers are hypothetical quantum information processing (QIP) devices that allow one to store, manipulate, and extract information while harnessing quantum physics to solve various computational problems and do so putatively more efficiently than any known classical counterpart. Despite many ‘proofs of concept’ (Aharonov and Ben–Or 1996; Knill and Laflamme 1996; Knill et al. 1996; Knill et al. 1998) the key obstacle in realizing these powerful machines remains their scalability and susceptibility to noise: almost three decades after their conceptions, experimentalists (...) still struggle to maintain useful quantum coherence in QIP devices with more than a pair of qubits (e.g., Blatt and Wineland 2008). This slow progress has prompted debates on the feasibility of quantum computers, yet the quantum information community has dismissed the skepticism as “ideology” (Aaronson 2004), claiming that the obstacles are merely technological (Kaye et al. 2007, 240). In a recent paper (Hagar 2009) I’ve argued that such a skepticism with respect to the feasibility of quantum computers need not be deemed ideological at all, and that the aforementioned ‘proofs of concept’ are physically suspect. Using analogies from the foundations of classical statistical mechanics (SM), I’ve also argued that instead of active error correction, the appropriate framework for debating the feasibility of large–scale, fault–tolerant and computationally superior quantum computers should be the project of error avoidance: rather than trying to constantly ‘cool down’ the QIP device and prevent its thermalization, one should try to locate those regions in the device’s state space which are thermodynamically ‘abnormal’, i.e., those regions in the device’s state space which resist thermalization regardless of external noise. This paper is intended as a further contribution to the debate on the feasibility of large–scale, fault–tolerant and computationally superior quantum computers. Relying again on analogies from the foundations of classical SM, it suggests a skeptical conjecture and frames it in the ‘passive’, error avoidance, context.. (shrink)

In quantum computing, where algorithms exist that can solve computational problems more efficiently than any known classical algorithms, the elimination of errors that result from external disturbances or from imperfect gates has become the ...

This essay traces the evocations of the Chinese practice of foot-binding in Western political thought. I examine the changing deployments of the image: as a contrast to European freedom or as a mirror reflecting its own limitations. The bound feet not merely illustrate a lack of freedom through an image of disabled mobility. They also situate freedom within global and gendered frameworks. Via a reading of the image and its contexts, we see that European freedom-as-movement emerged on the backdrop of (...) two imperial contrasts: images of nomadism, which are only marginally considered in this paper, and an assumed stagnation, that presumably prevailed in the East. Yet surprisingly, the image was often evoked to say something about Europe itself, rather than about its “others.” Therefore, it also reveals the corporeal dimensions of a concept of freedom that has underlaid a long liberal tradition. The crushed and squeezed feet of girls in China thus marked both a gendered and an imperial divide between those who can move freely, and therefore rule, and those who cannot rule because of their lack of mobility; yet at the same time, it undid this division by allowing the East and its stationariness to permeate Europe through a multiply foreign body: feminized, racially alien, and geographically distanced. (shrink)

Haṭhayoga texts, influential in the development of modern posture-based yoga, offer a conceptual framework intertwining physical cultivation, health, and soteriological aims. This article explores two interconnected inquiries regarding early Haṭhayoga texts: How do they conceptualize health, and how do they perceive the relationship between health and soteriology? These investigations illuminate the place of health in early yoga texts within Hindu traditions prior to its global recognition. This article reveals that early _haṭha_ texts present a holistic approach to health, highlighting the (...) interconnectedness of curing the mind and healing the body. This process entails not only eradicating physical diseases but also the transcendence of all forms of suffering. The transformative process of eliminating the misleading self-identity (_ahaṁkāra_) is pivotal, leading directly to health. This relationship extends beyond metaphorical comparisons of healing ignorance and suffering. This ontological framework proposes a harmonious integration between the material and soteriological realms, viewing the healthy body as a physical manifestation of the divine essence. Thus, the emergence of the biomedical discourse surrounding yoga in modern times did not occur autonomously. Haṭhayoga, with its roots dating back to the beginning of the second millennium CE, played a crucial role in shaping this historical transformation. (shrink)

This article examines the cultural ways in which traditional Judaism understands the relationship between an individual and Divinity. The article shows that this understanding has deep gendered dimensions. Grounded in feminist critiques of theology, as well as in Jewish studies and cultural studies, the article shows that the conceptualization of God-person relationship, in both Orthodox and Kaballic Jewish streams, is based on a hierarchical division to three different spaces. These spaces are: Mitzvah, Grace, and Desire or Will. The Mitzvah is (...) perceived to be the highest space and is represented as 'manly'. The intermediate space-Grace-is represented as a 'good woman' or as 'mother'. This space is characterized by a sacred yearning, as well as by lack of stability and continuity, paralysis, and even death. The lowest space is the space of Desire and personal will, which is culturally represented by a child or a whore-woman. This space is characterized by an attitude of disregard, resistance and fear. The article demonstrates how this cultural division of Divinity in to three, contradicts the declared Jewish position that God/divinity is 'One, Sole and Unique', and points at the inherent need of genderless conceptualization of Divinity in Judaism. (shrink)

One defining feature of the Hindu religious worldviews is a belief in the impermanence of the body and its perception as a source of suffering due to a misguided attachment of the self to its corporeal manifestation. This view is expressed in several important traditions, including classical yoga, which perceives the physical body as an impediment to attaining liberation and irrelevant in the state of liberation.However, the perception of the physical body in liberation is going through ontological changes in early (...) medieval Haṭhayoga texts. The dichotomy between embodied and disembodied states of the body when one is liberated is the focus of this article. In several medieval yoga texts dating between the eleventh and the fifteenth centuries, the ontological immortal state of living liberation is more similar to physical death. Often the exact text holds both views of embodied and disembodied states simultaneously with no overt inconsistency. I argue that these tensions and contradictions can be explained in two ways: by looking at the assessed timeline of the texts and by reflecting on their sectarian and social origin. (shrink)

Recent suggestions to supply quantum mechanics (QM) with realistic foundations by reformulating it in light of quantum information theory (QIT) are examined and are found wanting by pointing to a basic conceptual problem that QIT itself ignores, namely, the measurement problem. Since one cannot ignore the measurement problem and at the same time pretend to be a realist, as they stand, the suggestions to reformulate QM in light of QIT are nothing but instrumentalism in disguise.

BackgroundCodes of conduct mainly focus on research misconduct that takes the form of fabrication, falsification, and plagiarism. However, at the aggregate level, lesser forms of research misbehavior may be more important due to their much higher prevalence. Little is known about what the most frequent research misbehaviors are and what their impact is if they occur.MethodsA survey was conducted among 1353 attendees of international research integrity conferences. They were asked to score 60 research misbehaviors according to their views on and (...) perceptions of the frequency of occurrence, preventability, impact on truth (validity), and impact on trust between scientists on 5-point scales. We expressed the aggregate level impact as the product of frequency scores and truth, trust and preventability scores, respectively. We ranked misbehaviors based on mean scores. Additionally, relevant demographic and professional background information was collected from participants.ResultsResponse was 17% of those who were sent the invitational email and 33% of those who opened it. The rankings suggest that selective reporting, selective citing, and flaws in quality assurance and mentoring are viewed as the major problems of modern research. The “deadly sins” of fabrication and falsification ranked highest on the impact on truth but low to moderate on aggregate level impact on truth, due to their low estimated frequency. Plagiarism is thought to be common but to have little impact on truth although it ranked high on aggregate level impact on trust.ConclusionsWe designed a comprehensive list of 60 major and minor research misbehaviors. Our respondents were much more concerned over sloppy science than about scientific fraud (FFP). In the fostering of responsible conduct of research, we recommend to develop interventions that actively discourage the high ranking misbehaviors from our study. (shrink)

This essay by the Dutch modernist writer Menno ter Braak, ‘National Socialism as a Doctrine of Rancour’, was written in 1937 just before the German annexation of the Netherlands. It is a rare examination of how the concept ressentiment can be used to analyse 1930s National Socialism, outlining the ways in which the fascist variant of ressentiment is both distinctive and also, nonetheless, connected to its democratic and socialist versions. The essay develops Nietzsche’s and Scheler’s understandings of ressentiment by applying (...) them to fascism, insisting on the centrality of the moral sentiment of ressentiment not just to populism but to all forms of democracy, and to any philosophical or political orientation committed to an ideal of equality, indeed to all of modern society, culture and politics. (shrink)

A book on the notion of fundamental length, covering issues in the philosophy of math, metaphysics, and the history and the philosophy of modern physics, from classical electrodynamics to current theories of quantum gravity. Published (2014) in Cambridge University Press.

This book is about Karl Popper's early writings before he began his career as a philosopher. The purpose of the book is to demonstrate that Popper's philosophy of science, with its emphasis on the method of trial and error, is largely based on the psychology of Otto Selz, whose theory of problem solving and scientific discovery laid the foundation for much of contemporary cognitive psychology. By arguing that Popper's famous defence of the method of falsification as well as his elaboration (...) of an evolutionary theory of knowledge are equally indebted to German psychology, Michel ter Hark challenges the received view of the development of Popper's philosophy. The book concludes with a reinterpretation of Popper's theory of the mind-body problem, emphasizing its contemporary relevance. (shrink)

Combining physics, mathematics and computer science, quantum computing and its sister discipline of quantum information have developed in the past few decades from visionary ideas to two of the most fascinating areas of quantum theory. General interest and excitement in quantum computing was initially triggered by Peter Shor (1994) who showed how a quantum algorithm could exponentially “speed-up” classical computation and factor large numbers into primes far more efficiently than any (known) classical algorithm. Shor’s algorithm was soon followed by several (...) other algorithms that aimed to solve combinatorial and algebraic problems, and in the years since theoretical study of quantum systems serving as computational devices has achieved tremendous progress. Common belief has it that the implementation of Shor’s algorithm on a large scale quantum computer would have devastating consequences for current cryptography protocols which rely on the premise that all known classical worst-case algorithms for factoring take time exponential in the length of their input (see, e.g., Preskill 2005). Consequently, experimentalists around the world are engaged in attempts to tackle the technological difficulties that prevent the realisation of a large scale quantum computer. But regardless whether these technological problems can be overcome (Unruh 1995; Ekert and Jozsa 1996; Haroche and Raimond 1996), it is noteworthy that no proof exists yet for the general superiority of quantum computers over their classical counterparts. -/- The philosophical interest in quantum computing is manifold. From a social-historical perspective, quantum computing is a domain where experimentalists find themselves ahead of their fellow theorists. Indeed, quantum mysteries such as entanglement and nonlocality were historically considered a philosophical quibble, until physicists discovered that these mysteries might be harnessed to devise new efficient algorithms. But while the technology for harnessing the power of 50–100 qubits (the basic unit of information in the quantum computer) is now within reach (Preskill 2018), only a handful of quantum algorithms exist, and the question of whether these can truly outperform any conceivable classical alternative is still open. From a more philosophical perspective, advances in quantum computing may yield foundational benefits. For example, it may turn out that the technological capabilities that allow us to isolate quantum systems by shielding them from the effects of decoherence for a period of time long enough to manipulate them will also allow us to make progress in some fundamental problems in the foundations of quantum theory itself. Indeed, the development and the implementation of efficient quantum algorithms may help us understand better the border between classical and quantum physics (Cuffaro 2017, 2018a; cf. Pitowsky 1994, 100), and perhaps even illuminate fundamental concepts such as measurement and causality. Finally, the idea that abstract mathematical concepts such as computability and complexity may not only be translated into physics, but also re-written by physics bears directly on the autonomous character of computer science and the status of its theoretical entities—the so-called “computational kinds”. As such it is also relevant to the long-standing philosophical debate on the relationship between mathematics and the physical world. (shrink)

Solidarity has for a long time been referred to as the core value underpinning European health and welfare systems. But there has been debate in recent years about whether solidarity, with its alleged communitarian content, can be reconciled with the emphasis on individual freedom and personal autonomy. One may wonder whether there is still a place for solidarity, and whether the concept of justice should be embraced to analyse the moral issues regarding access to health care. In this article, I (...) will answer this question by analysing the normative foundations of the concept of justice, followed by a deeper examination of the concept of solidarity in continental philosophy. More specifically, I will compare the philosophical traditions rooted in Kant to approaches rooted in Hegel. In addition, I will present the work of Avishai Margalit on the decent society to criticize a predominantly liberal approach to access to health care. The importance of solidarity lies particularly in its emphasis on relational aspects and the role of recognition in care practices, which are usually ignored in liberal approaches to justice. However, the article will argue that solidarity is not an alternative to a rights-based concept of justice, but must be considered as a necessary complement to it. (shrink)

Recent suggestions to supply quantum mechanics (QM) with realistic foundations by reformulating it in light of quantum information theory (QIT) are examined and are found wanting by pointing to a basic conceptual problem that QIT itself ignores, namely, the measurement problem. Since one cannot ignore the measurement problem and at the same time pretend to be a realist, as they stand, the suggestions to reformulate QM in light of QIT are nothing but instrumentalism in disguise.

The cognitive processing of spatial relations in Euclidean diagrams is central to the diagram-based geometric practice of Euclid's Elements. In this study, we investigate this processing through two dichotomies among spatial relations—metric vs topological and exact vs co-exact—introduced by Manders in his seminal epistemological analysis of Euclid's geometric practice. To this end, we carried out a two-part experiment where participants were asked to judge spatial relations in Euclidean diagrams in a visual half field task design. In the first part, we (...) tested whether the processing of metric vs topological relations yielded the same hemispheric specialization as the processing of coordinate vs categorical relations. In the second part, we investigated the specific performance patterns for the processing of five pairs of exact/co-exact relations, where stimuli for the co-exact relations were divided into three categories depending on their distance from the exact case. Regarding the processing of metric vs topological relations, hemispheric differences were found for only a few of the stimuli used, which may indicate that other processing mechanisms might be at play. Regarding the processing of exact vs co-exact relations, results show that the level of agreement among participants in judging co-exact relations decreases with the distance from the exact case, and this for the five pairs of exact/co-exact relations tested. The philosophical implications of these empirical findings for the epistemological analysis of Euclid's diagram-based geometric practice are spelled out and discussed. (shrink)

How does the philosophical problem about mental processes and states and behaviourism arise?—The first step is the one that altogether escapes notice. We talk of processes and states and leave their nature undecided. Sometimes perhaps we shall know more about them—we think. But that is just what commits us to a particular way of looking at the matter. And now the analogy which was to make us understand our thoughts falls to pieces. So we have to deny the yet uncomprehended (...) process in the yet unexplored medium. And now it looks as if we had denied mental processes. And naturally we don’t want to deny them. (shrink)

I discuss the philosophical implications that the rising new science of quantum computing may have on the philosophy of computer science. While quantum algorithms leave the notion of Turing-Computability intact, they may re-describe the abstract space of computational complexity theory hence militate against the autonomous character of some of the concepts and categories of computer science.

Loop quantum gravity predicts that spatial geometry is fundamentally discrete. Whether this discreteness entails a departure from exact Lorentz symmetry is a matter of dispute that has generated an interesting methodological dilemma. On one hand one would like the theory to agree with current experiments, but, so far, tests in the highest energies we can manage show no such sign of departure. On the other hand one would like the theory to yield testable predictions, and deformations of exact Lorentz symmetry (...) in certain yet– to–be–tested regimes may have phenomenological consequences. Exposing their shortcomings, here I discuss two arguments that exemplify this dilemma, and compare them to other cases from the history of physics that share their symptoms. (shrink)

A remarkable theorem by Clifton, Bub and Halvorson (2003) (CBH) characterizes quantum theory in terms of information--theoretic principles. According to Bub (2004, 2005) the philosophical significance of the theorem is that quantum theory should be regarded as a ``principle'' theory about (quantum) information rather than a ``constructive'' theory about the dynamics of quantum systems. Here we criticize Bub's principle approach arguing that if the mathematical formalism of quantum mechanics remains intact then there is no escape route from solving the measurement (...) problem by constructive theories. We further propose a (Wigner--type) thought experiment that we argue demonstrates that quantum mechanics on the information--theoretic approach is incomplete. (shrink)

This book critically explores and analyses the scientific and ethical debates surrounding cognitive enhancers. Including contributions from neuroscientists, neuropsychopharmacologists, ethicists, philosophers, public health professionals, and policy researchers, the book offers a multidisciplinary, critical consideration of this topic.

Im Kontext eines umfassenden Rearrangements diskursiver Strukturen um 1800 werden auch Veranderungen innerhalb der Musik wirksam, die als grundlegende mediale Neudisposition verstanden werden konnen. Dabei sind diese Modifikationen in ein Netzwerk von Bestimmungsleistungen unterschiedlicher Provenienz eingebunden, das sich alsbald zu einem regelrechten 'Sinnprojekt' verdichtet. Dessen nahere Konturierung sowie seine vielfaltigen Postfigurationen und intermedialen Spielarten innerhalb unserer Gegenwartskultur stehen im Mittelpunkt dieser Untersuchung. Hier werden zugleich Strategien der asthetischen Gestaltung und theoretischen Reflexion mit in den Blick genommen, die sich jeweils auf (...) ihre eigene Weise mit diesem 'Sinnprojekt' auseinandersetzen. Im Rahmen dieser musik-, kultur- und medienwissenschaftlichen Betrachtungen kommen insbesondere folgende Phanomene zur Sprache: die mediale Disposition von 'Tonkunst' um 1800 - 'Klassik' und 'classic' - die Asthetik digitaler Klange - Marvin Minskys 'Geistesgesellschaft' - 'Brain Opera' - filmasthetische Konzeptionen bei Cameron und Lynch - Sound Libraries und Sound Tracks. (shrink)

A recent attempt to compute a (recursion‐theoretic) noncomputable function using the quantum adiabatic algorithm is criticized and found wanting. Quantum algorithms may outperform classical algorithms in some cases, but so far they retain the classical (recursion‐theoretic) notion of computability. A speculation is then offered as to where the putative power of quantum computers may come from.

This article tries to analyze the meaning and relevance of the concept of solidarity as compared to the concept of justice. While ‘justice’ refers to rights and duties , the concept of solidarity refers to relations of personal commitment and recognition . The article wants to answer the question whether solidarity and liberal justice should be seen as mutually exclusive or whether both approaches should be regarded as complementary to each other. The paper starts with an analysis of liberal theories (...) of justice which are followed by an analysis of the descriptive and a moral understanding of the concept of solidarity. The importance of solidarity lies in its relational aspects, particularly its emphasis on cooperation and commonality. The paper argues that while solidarity is more fundamental than justice, both concepts are important for the arrangement of health care practices. The paper gives special attention to the concept of decent care, reflective solidarity and humanitarian solidarity which is seen as fundamental for all health care policies and care practices. (shrink)

Excerpt from Schopenhauers Philosophie in Seinen Briefen So ungemein an;iehenb nun auch bie 2lufgabe fein wiirbe, alles, was fich an philofophifch, allgemein lierarifch, fulturgefchichtlich, politifch ober perfnlich intereffanten Bemerlungen in ben Briefen bes groen Mannes finbet, in einer umfangreicheren 2lrbeit hifiorifch fritifch 3u beleuchten, fo lann ich hier boch nur ein be fcheibeneres 5iel verfolgen, immerhin ein 5iel, bas nicht gang ohne wichtigleit fr bie Kritif ber Schopenhauer fchen (runblehren fein mchte. About the Publisher Forgotten Books publishes hundreds of thousands (...) of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. (shrink)

I discuss a rarely mentioned correspondence between Einstein and Swann on the constructive approach to the special theory of relativity, in which Einstein points out that the attempts to construct a dynamical explanation of relativistic kinematical effects require postulating a fundamental length scale in the level of the dynamics. I use this correspondence to shed light on several issues under dispute in current philosophy of spacetime that were highlighted recently in Harvey Brown’s monograph Physical Relativity, namely, Einstein’s view on the (...) distinction between principle and constructive theories, and the consequences of pursuing the constructive approach in the context of spacetime theories. r 2008 Elsevier Ltd. All rights reserved. (shrink)

A recent proposal to solve the halting problem with the quantum adiabatic algorithm is criticized and found wanting. Contrary to other physical hypercomputers, where one believes that a physical process “computes” a (recursive-theoretic) non-computable function simply because one believes the physical theory that presumably governs or describes such process, believing the theory (i.e., quantum mechanics) in the case of the quantum adiabatic “hypercomputer” is tantamount to acknowledging that the hypercomputer cannot perform its task.