Whereas decades of research have cataloged striking errors in physical reasoning, a resurgence of interest in intuitive physics has revealed humans’ remarkable ability to successfully predict the unfolding of physical scenes. A leading interpretation intended to resolve these opposing results is that physical reasoning recruits a general-purpose mechanism that reliably models physical scenarios (explaining recent successes), but overly contrived tasks or impoverished and ecologically invalid stimuli can produce poor performance (accounting for earlier failures). But might there be tasks that (...) persistently strain physical understanding, even in naturalistic contexts? Here, we explore this question by introducing a new intuitive physics task: evaluating the strength of knots and tangles. Knots are ubiquitous across cultures and time-periods, and evaluating them correctly often spells the difference between safety and peril. Despite this, 5 experiments show that observers fail to discern even very large differences in strength between knots. In a series of two-alternative forced-choice tasks, observers viewed a variety of simple “bends” (knots joining two pieces of thread) and decided which would require more force to undo. Though the strength of these knots is well-documented, observers’ judgments completely failed to reflect these distinctions, across naturalistic photographs (E1), idealized renderings (E2), dynamic videos (E3), and even when accompanied by schematic diagrams of the knots’ structures (E4). Moreover, these failures persisted despite accurate identification of the topological differences between the knots (E5); in other words, even when observers correctly perceived the underlying structure of the knot, they failed to correctly judge its strength. These results expose a blindspot in physical reasoning, placing new constraints on general-purpose theories of scene understanding. (shrink)

The Grolier Club of New York has been mounting exhibitions of books and prints since 1884, and many of them are recognized as landmark treatments of their subjects. Most of them have also been accompanied by published catalogs or related books. A recent instance was the exhibition, in the early months of 2021, drawn from Steven Lomazow's vast collection of American magazines, consisting of over eighty-three thousand separate issues from 1731 to the present. The substantial and profusely illustrated book (...) that has resulted is a welcome new survey of the subject, for it contains not only a record of the comprehensive exhibition but also fifteen essays written by Lomazow and seven other contributors (five chronological chapters, ten topical ones).The appearance of this book is an occasion for thinking about the status of magazines as research material. Although there is a considerable literature devoted to the history of magazines, they still do not always receive the attention they deserve. For example, author bibliographies generally give detailed physical descriptions of an author's books but simply list the magazine contributions. The illogic of this approach should be obvious, for magazines are printed matter, just as books are, and are thus subject to all the same complications. Two examples will illustrate how copies of supposedly identical issues can vary. In the nineteenth century, individual issues were often reprinted when the supply ran low, so that the publisher would be able to make up complete volumes for sale in a publisher's binding at the end of the year; these second printings were not labeled as such, but they could of course contain textual differences, both intentional and accidental. In the twentieth century, some American magazines had regional “editions” in which the text was shifted around in order to accommodate different advertising, keyed to local markets (the New Yorker is an example); as a result, page citations for a given contribution might not be the same in different copies (and cutting of text could also occur).The illogic of neglecting magazines has implications for biographical, as well as bibliographical and textual, study. There are many instances in which periodical publication was crucial for an author's career. It often provided an author's first public exposure and at any point in a career might have reached a larger audience than the books. Collectors, on whom preservation of the evidence initially depends, have been as guilty as bibliographers of slighting magazines. For instance, they have traditionally paid attention to anthologies that contain first book appearances of particular works (because they are “books”), without recognizing that issues of magazines are also anthologies (and frequently of more significance for promoting an author's reputation). Preservation relies also on institutional libraries to do their part; but (although “little magazines” now seem to be safe from further destruction) mainstream and mass-circulation magazines (both present and past) are continually being discarded by libraries in favor of digital reproductions. And reproductions are no more adequate as substitutes for the originals of magazines than they are for books, since they do not provide a basis for studying the unreproducible physical details that affect the reading experience and are essential for bibliographical research. Furthermore, since copies of a magazine issue can vary (just as copies of a book can), the number of copies that are preserved is a serious concern.These are among the considerations that make one glad to see Lomazow's book, for here is a collector who has focused on magazines for their own sake. Even though his book does not go into the matters I have raised, it can still serve to publicize the cause. One hopes that it, along with the wide attention his exhibition received, will stimulate appreciation of the importance of magazines in cultural history and the consequent need to collect and preserve them. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Abortion to Abolition: Reproductive Health and Justice in Canada by Martha PaynterRebecca Simmons (bio)Abortion to Abolition: Reproductive Health and Justice in Canada by Martha Paynter Winnipeg, MB: Fernwood Publishing, 2022Martha Paynter's Abortion to Abolition: Reproductive Health and Justice in Canada is a bold, ambitious work that seeks to not only catalog Canada's meandering and often backtracking path toward reproductive justice, but to act as a manifesto for Paynter's (...) own ideas and goals for reproductive justice. The book takes the form of an anthology of stories, divided into chapters, that are grouped according to a certain right; for example, the right to bodily autonomy. This format effectively guides the reader from abortion to abolition. Paynter adroitly starts the book with white feminist favorites such as bodily autonomy and not having children. Then she logically progresses to more radical ideas such as parenting in prison and the total abolition of prisons. The stories in this book are accompanied by warm, colorful illustrations by Julia Hunt. These drawings help the reader visualize the person behind the story and the very real life that was affected by reproductive law and/or social norms. Paynter holds a PhD in nursing, and it is from this background that she writes, seeking to educate nurses and other healthcare professionals alongside a broader readership garnered through her clear, approachable writing style.Chapter 1 introduces the reader to many of the book's key themes by considering the right and need to have bodily autonomy, and the multiple ways this manifests itself in ordinary (and less-ordinary) life. Paynter considers the disparate stories of five women, all fighting in some way for bodily autonomy. The stories cover events of gender-based gun violence, sexual assault, transgender rights in prison, the legalization of sex work, police violence, and institutional racism. Each story recounted by Paynter catalogs tragedies and injustices with blunt and brutal honesty—perhaps to an unnecessary extent. Every horrific fact is laid bare for the readers as they uncover the intricacies of gender-based, imperialist, and racist violence. Paynter has chosen these stories to display the multitude of ways in which people—especially Black, Indigenous, people of color (BIPOC) and minoritized genders—can be willfully wronged by the state and [End Page 209] the criminal justice system, such that the reader must begin to confront the fact that these structures don't seem to exist to benefit or protect the most marginalized in society.Chapter 2 approaches the right not to have children through a number of stories related to contraception, abortion, and family planning. Paynter sketches some of the key points in Canada's journey toward the decriminalization of abortion, from paradoxical trailblazers, such as Dr. Emily Stowe in the 1800s, to the viral memefied content of art protestor iamkarats. While the unequivocal legality of abortion in Canada suggests incredible progressiveness and support for women's rights, Paynter paints a more complex picture through her chosen narratives. Crucially, the inequitable geographical access to abortion, in particular, throughout the huge landmass of Canada suggests that the right to not have children in Canada is not universal. Moreover, Paynter suggests that access is also bounded by financial constraints, finite public funding, and the limited availability of inclusive clinics that prioritize healthcare for LGBTQ2S+ people.Chapter 3 considers the topic of having children; in particular, the right to reproductive technologies and freedom from forced sterilization. Paynter quickly makes clear that while many white feminists might see having and not having children as diametrically opposed, they are two equally essential parts of reproductive justice. Paynter draws attention to the Sexual Sterilization Act of 1928 that was only overturned in 1972. She describes it as part of the "genocidal colonial project" (84), a collection of laws and policies aimed at fulfilling eugenicist, neoimperial ideals of increasing production of the white "race" and promoting the genocide of Indigenous peoples. Furthermore, Paynter argues that evidence of forced sterilization of Indigenous peoples, and other physical violence and neglect, persists to the present day and must be stopped and reparations made for previous harms. Paynter then considers the complex, often-debated case of commercialized surrogacy, which she defines... (shrink)

The turbulent social conflict over what counts as good-enough mothering and the greedy institution of work leaves many women trapped in what Joan Williams called the gender system of domesticity. Like self-help books, advertisements can lead mothers toward a culturally sanctioned compromise. This article looks at the “cultural deals” being offered for mothers by toy catalogs. The author examined the marketing of more than 3,500 toys in 11 catalogs fromthe 2000-2001holiday season. She found that the catalogs presented (...) toys as solutions that would allow mothers to be good mothers without having to physically be there, even as the advertising copy evoked images of companionship and togetherness. Catalogs also emphasized skill building over fun, defined only certain skills as skills in the first place, and dismissed nurturing as feelings at best worth of expression and not of practice. The author argues that the toys promise to perpetuate for the children the same contradictions the catalogs purport to solve for their mothers. (shrink)

We should now be able to come to some general conclusions about the main lines of Cuvier's development as a naturalist after his departure from Normandy. We have seen that Cuvier arrived in Paris aware of the importance of physiology in classification, yet without a fully worked out idea of how such an approach could organize a whole natural order. He was freshly receptive to the ideas of the new physiology developed by Xavier Bichat.Cuvier arrived in a Paris also torn (...) by many overlapping debates on the nature of classification, and in particular that between the natural and artificial systems. The very validity of the enterprise of classification was questioned in many quarters. Cuvier's achievement on his entry into the Parisian world of science was not simply to establish himself as a highly competent anatomist: far more important, he also began to use ideas from many different specialties to change completely the notion of what was involved in natural history.124 At the same time that he himself swung away from the guiding image of the field naturalist as the ideal of the specialty, he took ideas from the new physiology to answer questions about the order of the animal world, and from comparative anatomy to resurrect extinct creation — and to come to conclusions from that creation about the history of the forms of life and the manner of their succession. He showed himself able to alter the relationships between natural history and many other fields of study in a way that implied, rightly or wrongly, his own complete mastery over such a movement. Partly he was able to do this because the ideas he borrowed were not themselves logically articulated and thus could be easily adapted and refocused for many different specific purposes. The value of the heuristic possibilities inherent in the idea of life, for example, far outweighed its inability to generate full systems of classification. Cuvier also consistently refused to consider in science matters relating to the first causes of events. Freed from the consideration of first-order phenomena, he was able to use second-order explanations across a far wider field of applicability. Personal doubts about the validity of a theology that had used science in order to bolster its own claims were combined here with the strong influence of the Kantian critique of the limits of human reason.125Cuvier's characteristic mode of procedure was that of intellectual appropriation and a bold capacity for altering the relationships between different fields of knowledge, rather than, with the exception of taxonomy, the technique of expanding their subject matter. His claims to originality came, first, from this reappropriation and reorientation and, second, from the sheer scope of his work, which aimed at nothing less than the cataloging and classification of all animate objects.126 They rested also on his acute use of his assertion of a certain relationship with the past of his subject. Very often he would present this history in such a way as to obscure his own intellectual genealogy, and often too he would give differing accounts of the priority of use of an idea in order to distract attention from the questionable exactitude of his own claims to originality. Cuvier came to Paris at precisely the time when society and institutions were most profitably malleable for a newcomer; it was also a time when many scientific disciplines had reached a stage advanced in terms of their factual content, yet relatively inadequate in conceptual organization. They were ripe for takeover by large-scale organizing ideas such as the animal economy and the subordination of characteristics. Paleontology is a particularly good example of a specialty in this particular form of underdevelopment in 1795.Cuvier paid a high price for his initial success. His electic applications of large-scale organizing ideas tended to mean that little of his own work had complete coherence at all levels. Ideas, as we have seen, that proved capable of providing a complete reform of the larger groups of the animal kingdom were incapable of producing its detailed working-out in the taxonomy of smaller groups, which had to be supplied from observed analogical correlations. Further, his physiological approach to classification involved the breakdown of strict correspondence between organs and functions, which left the way open for workers such as Geoffroy St. Hilaire gradually to tilt the balance away from the study of the correlations of hierarchies of functions, and toward morphology as the basis of the order of nature. Cuvier's brilliant appropriations from physiology from the beginning, therefore, contained the seeds of conflict with Geoffroy.Cuvier's eclectic approach made it very nearly impossible for him to present a clear idea of the ways in which the life sciences could be said to be lawful. In spite of his efforts to assimilate them to the position of the physical sciences in this respect, he was forced in the end to accord only an ambiguous status as “laws” to observational correlations. From this area of failure came much of the attempt to give his own two laws — the correlation of parts and the subordination of characteristics — predictive qualities, particularly in relation to paleontological research.It is not surprising that Cuvier's title as the “legislator” of natural history should represent more a claim than a reality. How, then, was he able to emerge as the leading French naturalist of his day? First of all must be adduced the sheer scale of his undertakings. Then comes his expertise as a practical anatomist, and the range of different topics toward which he turned his interest. His collaborators cannot be given credit for his output nor, as we have seen, for slavish adherence to his ideas. Cuvier was able to successfully claim to have dominated the underdeveloped specialties, such as paleontology, and turned them into a major heuristic input into both geology and comparative anatomy; but in other fields, such as physiology, he appropriated concepts and encouraged research but made little impact on the field himself. His attempts in 1812 to head off, or neutralize and absorb the growth of morphological studies landed him in a dangerously rigid position, which despite his encouragement of the new physiological research under the Restoration made further elaboration of his own conceptual underpinnings almost impossible.Cuvier's authority in the scientific world would in any case have been great because of his substantive achievement in taxonomy, but the rest of his work had enough ambiguities and dislocations for it to need the support of his political and social power. Cuvier's detractors seized on a vital fragment of the truth when they accused him of finding the political dimension all-important: it obscured the disjunctions in his theories and at the same time gave him the authority to make new claims for the status of the observational sciences - and for their relations of power with their surrounding specialties. Cuvier's science both thrived on and was halted by the power games of intellectual appropriation, manipulation of the past to confirm the present, and continual claims for hegemony. (shrink)

An archive is a repository - that is, a place or space in which materials of historic interest or social significance are stored and ordered. A national archive is the storing and ordering place of the collective memory of that nation or people(s). This article provides a brief his torical/theoretical introduction to the politics of the archive in late capi talist societies and discusses this politics of memory via the performance of ordinary daily activities of librarians and archivists. Some relevant (...) political/discursive questions include: who controls, establishes and maintains the archive, and how do they do so? Which materials are preserved in the archive and which are excluded? As the documents and artifacts selected for the archive are ordered and classi fied, how do the schemas and structures applied include, exclude, fore ground or marginalize those materials? Finally, to what extent do the logical hierarchies for classification and arrangement reflect social or political hierarchies? Librarians and archivists face these concerns in HISTORY OF THE HUMAN SCIENCES Vol. 11 No. 4 © 1998 SAGE Publications (London, Thousand Oaks and New Delhi) [0952-6951(199811)11:4;17-32; 006604]their professional practice as they make decisions influenced by budgets, finite amounts of both physical and computer storage space and limited staff resources. The authors give real-life examples of choices made as archivists struggle to balance ideological goals made contradictory by practical constraints. For example, is it more appro priate to acquire as many materials as possible but be unable to describe, preserve and present them adequately, or is it preferable to describe, preserve and make fully available a more limited range of records and documents? Because of such practical concerns in modern technicist cultures, the explicitly political who often is reduced to the technically instrumental how - that is, political-moral questions are displaced to nonmoral and nonpolitical technical discourse, thereby establishing a 'meta-politics' that is understood only by the initiated. Conversely, archival activities such as acquisition, classification and preservation are 'technical' activi ties that may become explicitly 'political'. The article concludes that technical activities always are political, at least latently or potentially, even when they are not contested and made explicitly political. (shrink)

The demand for integrating and sharing heterogeneous data online has attracted the interest of cultural institutions in making information access and retrieval more effective via Semantic Web technologies. The present study proposes a digital repository for 3D scans of modernist sculptures in public spaces in the city of Rio de Janeiro, Brazil, with a view to ensuring access, use, reuse and preservation of this information. This is a qualitative exploratory experimental study based on the scientific literature and specific empirical material. (...) It presents the analysis results of vocabularies for physical artifact documents and their digital counterparts on the Semantic Web and a discussion on how these align with the nature of the metadata determined here, as well as a metadata modeling prototype implemented on the Tainacan platform and aimed at cataloging digital 3D replicas. We claim that the proposed model for documenting cultural heritage assets on Tainacan is easy to implement, in that it uses accessible technology with a wide internet user base, highly expressive in its descriptions of 3D and multimedia content and based on well-established metadata and ontology standards recommended by regulatory bodies and communities such as the World Wide Web Consortium and International Organization for Standardization. Keywords: networked heritage documents, digital repositories, 3D digitization, semantic annotation. (shrink)

What can textual combinations, format, and size tell us about the worldviews of the donors, scribes, and readers of medieval Chinese Buddhist manuscripts? How can material sources inform us about the ways adherents both perceived and actively shaped their traditions? This essay offers answers to these questions through analysis of several manuscripts of the Scripture on the Cause and Effects of Wholesome and Unwholesome Acts (Shan’e yinguo jing 善惡因果經, T no. 2881), discovered in the Dunhuang Library Cave. The text was (...) likely composed in Chinese, and it first appears in Buddhist catalogs in the year 695 ce. Extant manuscripts of Cause and Effects appear in both scroll and booklet formats and number at least fifty-two in total, a significant number that attests to the popularity of the text. This essay analyzes the textual content and literary techniques, relating both to physical aspects of the manuscripts. It examines the textual and the material together through the mediating concept of practice—in this case, medieval Chinese reading practices. (shrink)

Philosophical accounts of quantum theory commonly suppose that the observables of a quantum system form a Type-I factor von Neumann algebra. Such algebras always have atoms, which are minimal projection operators in the case of quantum mechanics. However, relativistic quantum field theory and the thermodynamic limit of quantum statistical mechanics make extensive use of von Neumann algebras of more general types. This chapter addresses the question whether interpretations of quantum probability devised in the usual manner continue to apply in the (...) more general setting. Features of non-type I factor von Neumann algebras are cataloged. It is shown that these novel features do not cause the familiar formalism of quantum probability to falter, since Gleason's Theorem and the Lüders Rule can be generalized. However, the features render the problem of the interpretation of quantum probability more intricate. (shrink)

These articles and speeches by the Nobel Prize-winning physicist date from 1934 to 1958. Rather than expositions on quantum physics, the papers are philosophical in nature, exploring the relevance of atomic physics to many areas of human endeavor. Includes an essay in which Bohr and Einstein discuss quantum and_wave equation theories. 1961 edition.

Why is the future so different from the past? Why does the past affect the future and not the other way round? The universe began with the Big Bang - will it end with a `Big Crunch'? Now in paperback, this book presents an innovative and controversial view of time and contemporary physics. Price urges physicists, philosophers, and anyone who has ever pondered the paradoxes of time to look at the world from a fresh perspective, and throws fascinating new (...) light on some of the great mysteries of the universe. (shrink)

A sophisticated and original introduction to the philosophy of quantum mechanics from one of the world’s leading philosophers of physics In this book, Tim Maudlin, one of the world’s leading philosophers of physics, offers a sophisticated, original introduction to the philosophy of quantum mechanics. The briefest, clearest, and most refined account of his influential approach to the subject, the book will be invaluable to all students of philosophy and physics. Quantum mechanics holds a unique place in the (...) history of physics. It has produced the most accurate predictions of any scientific theory, but, more astonishing, there has never been any agreement about what the theory implies about physical reality. Maudlin argues that the very term “quantum theory” is a misnomer. A proper physical theory should clearly describe what is there and what it does—yet standard textbooks present quantum mechanics as a predictive recipe in search of a physical theory. In contrast, Maudlin explores three proper theories that recover the quantum predictions: the indeterministic wavefunction collapse theory of Ghirardi, Rimini, and Weber; the deterministic particle theory of deBroglie and Bohm; and the conceptually challenging Many Worlds theory of Everett. Each offers a radically different proposal for the nature of physical reality, but Maudlin shows that none of them are what they are generally taken to be. (shrink)

This report reviews what quantum physics and information theory have to tell us about the age-old question, How come existence? No escape is evident from four conclusions: (1) The world cannot be a giant machine, ruled by any preestablished continuum physical law. (2) There is no such thing at the microscopic level as space or time or spacetime continuum. (3) The familiar probability function or functional, and wave equation or functional wave equation, of standard quantum theory provide mere continuum (...) idealizations and by reason of this circumstance conceal the information-theoretic source from which they derive. (4) No element in the description of physics shows itself as closer to primordial than the elementary quantum phenomenon, that is, the elementary device-intermediated act of posing a yes-no physical question and eliciting an answer or, in brief, the elementary act of observer-participancy. Otherwise stated, every physical quantity, every it, derives its ultimate significance from bits, binary yes-or-no indications, a conclusion which we epitomize in the phrase, it from bit. (shrink)

Much has been written on the role of causal notions and causal reasoning in the so-called 'special sciences' and in common sense. But does causal reasoning also play a role in physics? Mathias Frisch argues that, contrary to what influential philosophical arguments purport to show, the answer is yes. Time-asymmetric causal structures are as integral a part of the representational toolkit of physics as a theory's dynamical equations. Frisch develops his argument partly through a critique of anti-causal arguments (...) and partly through a detailed examination of actual examples of causal notions in physics, including causal principles invoked in linear response theory and in representations of radiation phenomena. Offering a new perspective on the nature of scientific theories and causal reasoning, this book will be of interest to professional philosophers, graduate students, and anyone interested in the role of causal thinking in science. (shrink)

The book is drawn from the Tarner lectures, delivered in Cambridge in 1993. It is concerned with the ultimate nature of reality, and how this is revealed by modern physical theories such as relativity and quantum theory. The objectivity and rationality of science are defended against the views of relativists and social constructionists. It is claimed that modern physics gives us a tentative and fallible, but nevertheless rational, approach to the nature of physical reality. The role of subjectivity in (...) science is examined in the fields of relativity theory, statistical mechanics and quantum theory, and recent claims of an essential role for human consciousness in physics is rejected. Prospects for a 'Theory of Everything' are considered, and the related question of how to assess scientific progress is carefully examined. (shrink)

The appeal of materialism lies precisely in this, in its claim to be natural metaphysics within the bounds of science. That a doctrine which promises to gratify our ambition (to know the noumenal) and our caution (not to be unscientific) should have great appeal is hardly something to be wondered at. (Putnam (1983), p.210) Materialism says that all facts, in particular all mental facts, obtain in virtue of the spatio- temporal distribution, and properties, of matter. It was, as Putnam says, (...) “metaphysics within the bounds of science”, but only so long as science was thought to say that the world is made out of matter.1 In this century physicists have learned that there is more in the world than matter and, in any case, matter isn’t quite what it seemed to be. For this reason many philosophers who think that metaphysics should be informed by science advocate physicalism in place of materialism. Physicalism claims that all facts obtain in virtue of the distribution of the fundamental entities and properties –whatever they turn out to be- of completed fundamental physics. Later I will discuss a more precise formulation. But not all contemporary philosophers embrace physicalism. Some- and though a minority not a small or un-influential one- think that physicalism is rather the metaphysics for an unjustified scientism; i.e. it is scientistic metaphysics. Those among them that think that physicalism can be clearly formulated think that it characterizes a. (shrink)

Presents German physicist Werner Heisenberg's 1958 text in which he discusses the philosophical implications and social consequences of quantum mechanics and other physical theories.

Symmetries play a major role in physics, in particular since the work by E. Noether and H. Weyl in the first half of last century. Herein, we briefly review their role by recalling how symmetry changes allow to conceptually move from classical to relativistic and quantum physics. We then introduce our ongoing theoretical analysis in biology and show that symmetries play a radically different role in this discipline, when compared to those in current physics. By this comparison, (...) we stress that symmetries must be understood in relation to conservation and stability properties, as represented in the theories. We posit that the dynamics of biological organisms, in their various levels of organization, are not just processes, but permanent (extended, in our terminology) critical transitions and, thus, symmetry changes. Within the limits of a relative structural stability (or interval of viability), variability is at the core of these transitions. (shrink)

It is well known that the process of quantization—constructing a quantum theory out of a classical theory—is not in general a uniquely determined procedure. There are many inequivalent methods that lead to different choices for what to use as our quantum theory. In this paper, I show that by requiring a condition of continuity between classical and quantum physics, we constrain and inform the quantum theories that we end up with.

It is widely thought that there is an important argument to be made that starts with premises taken from the science of physics and ends with the conclusion of physicalism. The standard view is that this argument takes the form of a causal argument for physicalism. Roughly, physics tells us that the physical realm is causally complete, and so minds (among other entities) must be physical if they are to interact with the world as we think they do. (...) In what follows, I raise problems for this view. After an initial review of the causal argument, I begin my case by showing that the totality of physical truths do not deductively entail the causal completeness of the physical realm, using a double-prevention scenario and causation by omission to show that nonphysical causes of physical effects would not need to violate physical conservation laws. I then move on to raise problems for an inductive argument for causal completeness by drawing on the neo-Russellian view that there is no causation in fundamental physics, and so causation must itself be a realized or derived entity. I conclude by suggesting that the underlying problem is that the causal argument has fallen out of touch with the sophisticated understanding that philosophers have developed of the role of causation within physics. (shrink)

Most recent work on the nature of experiment in physics has focused on "big science"--the large-scale research addressed in Andrew Pickering's Constructing Quarks and Peter Galison's How Experiments End. This book examines small-scale experiment in physics, in particular the relation between theory and practice. The contributors focus on interactions among the people, materials, and ideas involved in experiments--factors that have been relatively neglected in science studies. The first half of the book is primarily philosophical, with contributions from Andrew (...) Pickering, Peter Galison, Hans Radder, Brian Baigrie, and Yves Gingras. Among the issues they address are the resources deployed by theoreticians and experimenters, the boundaries that constrain theory and practice, the limits of objectivity, the reproducibility of results, and the intentions of researchers. The second half is devoted to historical case studies in the practice of physics from the early nineteenth to the early twentieth century. These chapters address failed as well as successful experimental work ranging from Victorian astronomy through Hertz's investigation of cathode rays to Trouton's attempt to harness the ether. Contributors to this section are Jed Z. Buchwald, Giora Hon, Margaret Morrison, Simon Schaffer, and Andrew Warwick. With a lucid introduction by Ian Hacking, and original articles by noted scholars in the history and philosophy of science, this book is poised to become a significant source on the nature of small-scale experiment in physics. (shrink)

This essay considers the prospects of modeling spacetime as a phenomenon that emerges in the low-energy limit of a quantum liquid. It evaluates three examples of spacetime analogues in condensed matter systems that have appeared in the recent physics literature, indicating the extent to which they are viable, and considers what they suggest about the nature of spacetime.

The work in this paper is presented with this spirit to draw the relatedness of Yijing to quantum physics and seek to express the continuity between the ancient sages and contemporary scientific thought. Yijing is abstract philosophical and can provide an excellent method for generating, structuring and exploring quantum fields relevant to our present level of scientific knowledge. Further, the view of reality that science emphasizes as a seamless, continuous field is the same as Yijing where ‘self’ as particle (...) is deeply integrated into the basic fabric of reality through their consciousness. It is this consciousness that interacts and co-relates to that field of interconnectedness. (Schöter, 2011) The wholeness of realities, in Yijing, are layer of fields interacting, changing, extending into possibilities and uncertainties. (shrink)

Our ordinary causal concept seems to fit poorly with how our best physics describes the world. We think of causation as a time-asymmetric dependence relation between relatively local events. Yet fundamental physics describes the world in terms of dynamical laws that are, possible small exceptions aside, time symmetric and that relate global time slices. My goal in this paper is to show why we are successful at using local, time-asymmetric models in causal explanations despite this apparent mismatch with (...) fundamental physics. In particular, I will argue that there is an important connection between time asymmetry and locality, namely: understanding the locality of our causal models is the key to understanding why the physical time asymmetries in our universe give rise to time asymmetry in causal explanation. My theory thus provides a unified account of why causation is local and time asymmetric and thereby enables a reply to Russell’s famous attack on causation. (shrink)

We are used to talking about the “structure” posited by a given theory of physics, such as the spacetime structure of relativity. What is “structure”? What does the mathematical structure used to formulate a theory tell us about the physical world according to the theory? What if there are different mathematical formulations of a given theory? Do different formulations posit different structures, or are they merely notational variants? I consider the case of Lagrangian and Hamiltonian classical mechanics. I argue (...) that, contrary to standard wisdom, these are not genuinely equivalent theories: they differ in statespace structure. I suggest that we should be realists about statespace structure. (shrink)

More than a century ago, Russell launched a forceful attack on causation, arguing not only that modern physics has no need for causal notions but also that our belief in causation is a relic of a pre-scientific view of the world. He thereby initiated a debate about the relations between physics and causation that remains very much alive today. While virtually everybody nowadays rejects Russell's causal eliminativism, many philosophers have been convinced by Russell that the fundamental physical structure (...) of our world doesn't contain causal relations. This raises the question of how to reconcile the central role of causal concepts in the special sciences and in common sense with the putative absence of causation in fundamental physics. (shrink)

A common reductionist assumption is that macro-scale behaviors can be described "bottom-up" if only sufficient details about lower-scale processes are available. The view that an "ideal" or "fundamental" physics would be sufficient to explain all macro-scale phenomena has been met with criticism from philosophers of biology. Specifically, scholars have pointed to the impossibility of deducing biological explanations from physical ones, and to the irreducible nature of distinctively biological processes such as gene regulation and evolution. This paper takes a step (...) back in asking whether bottom-up modeling is feasible even when modeling simple physical systems across scales. By comparing examples of multi-scale modeling in physics and biology, we argue that the “tyranny of scales” problem presents a challenge to reductive explanations in both physics and biology. The problem refers to the scale-dependency of physical and biological behaviors that forces researchers to combine different models relying on different scale-specific mathematical strategies and boundary conditions. Analyzing the ways in which different models are combined in multi-scale modeling also has implications for the relation between physics and biology. Contrary to the assumption that physical science approaches provide reductive explanations in biology, we exemplify how inputs from physics often reveal the importance of macro-scale models and explanations. We illustrate this through an examination of the role of biomechanics modeling in developmental biology. In such contexts, the relation between models at different scales and from different disciplines is neither reductive nor completely autonomous, but interdependent. (shrink)

PHILOSOPHY: BEACON OR TRAP* There was a time when everyone expected almost everything from philosophy. It was the time when philosophers drew confidently ...

Roughly speaking, classical statistical physics is the branch of theoretical physics that aims to account for the thermal behaviour of macroscopic bodies in terms of a classical mechanical model of their microscopic constituents, with the help of probabilistic assumptions. In the last century and a half, a fair number of approaches have been developed to meet this aim. This study of their foundations assesses their coherence and analyzes the motivations for their basic assumptions, and the interpretations of their (...) central concepts. The most outstanding foundational problems are the explanation of time-asymmetry in thermal behaviour, the relative autonomy of thermal phenomena from their microscopic underpinning, and the meaning of probability. A more or less historic survey is given of the work of Maxwell, Boltzmann and Gibbs in statistical physics, and the problems and objections to which their work gave rise. Next, we review some modern approaches to (i) equilibrium statistical mechanics, such as ergodic theory and the theory of the thermodynamic limit; and to (ii) non-equilibrium statistical mechanics as provided by Lanford's work on the Boltzmann equation, the so-called Bogolyubov-Born-Green-Kirkwood-Yvon approach, and stochastic approaches such as `coarse-graining' and the `open systems' approach. In all cases, we focus on the subtle interplay between probabilistic assumptions, dynamical assumptions, initial conditions and other ingredients used in these approaches. (shrink)

Jill North offers answers to questions at the heart of the project of interpreting physics. How do we figure out the nature of the world from a mathematically formulated theory? What do we infer about the world when a physical theory can be mathematically formulated in different ways? The notion of structure is crucial to North's answers.

There is a huge chasm between the notion of lawful determination that figures in fundamental physics, and the notion of causal determination that figures in the "folk physics" of everyday objects. In everyday life, we think of the behavior of an ordinary object as being determined by a small set of simple conditions. But in fundamental physics, no such conditions suffice to determine an ordinary object's behavior. What bridges the chasm is that fundamental physical laws make the (...) folk picture of the world approximately true in certain domains. How? In part, by entailing that many objects are approximately isolated from most of their environments. Dynamical laws yield this result only in conjunction with appropriate statistical assumptions about initial conditions. (shrink)

Most physics theories are deterministic, with the notable exception of quantum mechanics which, however, comes plagued by the so-called measurement problem. This state of affairs might well be due to the inability of standard mathematics to “speak” of indeterminism, its inability to present us a worldview in which new information is created as time passes. In such a case, scientific determinism would only be an illusion due to the timeless mathematical language scientists use. To investigate this possibility it is (...) necessary to develop an alternative mathematical language that is both powerful enough to allow scientists to compute predictions and compatible with indeterminism and the passage of time. We suggest that intuitionistic mathematics provides such a language and we illustrate it in simple terms. (shrink)

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Aristotle offers several arguments in Physics viii.8 for his thesis that, when something moves back and forth, it does not undergo a single motion. These arguments occur against the background of a sophisticated theory, expounded in Physics v—vi, of the basic structure of motions and of other continuous entities such as times and magnitudes. The arguments in Physics viii.8 stand in a complex relation to that theory. On the one hand, Aristotle evidently relies on the theory in (...) a number of crucial steps. Yet in other steps he seems to contradict or misapply the theory. This situation offers the occasion to examine Aristotle’s views about some fundamentals in the metaphysics of motion, while also raising questions about the unity of the text which has come down to us as the Physics. (shrink)