At the turn of the twentieth century, the American surgeon Harvey Cushing (1869-1939) chose to focus his surgical attention on the brain, an organ that had previously proved rather intractable to successful intervention. Over the course of the following decades he made this type of surgery a much safer procedure, reducing the mortality rate from a staggering 50% at the end of the nineteenth century to about 10%. Working first at Johns Hopkins and later at the Peter Bent (...) Brigham hospital in Boston, Cushing established a world-famous school of neurosurgery by training numerous residents and fellows. He also left an extraordinary collection of records and specimens that document his work in surgery: the Cushing Brain Tumor Registry. (shrink)

This chapter discusses how solar geoengineering might affect different African states, with a particular focus on its impact on social justice from an African perspective.

Simon Cushing conducted the following interview with Allen Buchanan on 2 June 2014.

A case study of the development of quantum field theory and of S-matrix theory, from their inceptions to the present, is presented. The descriptions of science given by Kuhn and by Lakatos are compared and contrasted as they apply to this case study. The episodes of the developments of these theories are then considered as candidates for competing research programs in Lakatos' methodology of scientific research programs. Lakatos' scheme provides a reasonable overall description and a plausible assessment of the relative (...) value of these two programs in terms of progressive and degenerating problem shifts. Also discussed are the roles of various types of models as they have been used in these areas of theoretical high-energy physics. (shrink)

Simon Schama's Dead Certainties is assessed in the light of the complex relationship between history and fiction, which share some limited common territory. Examples are cited from Mary Chesnut, Oscar Handlin, Georg Lukács, Herman Melville, Robert Penn Warren, P. D. James, and Wallace Stegner.Schama's book has some kinship to the skepticism found in "the new historicism" and "deconstruction," but also has its own differences from the fashionable "inverted positivism" which concludes that since evidence is not an open window on reality, (...) it must be a wall precluding access to it. Only two of Schama's three narratives cohere, and while uncertainty may be a common theme, his historian's judgment tends to dissipate much of the mystery his fictionalizing technique creates. His idea of historical uncertainty arises from a fallacy that a "communion with the dead" , possible only for a time-traveler, represents authentic knowledge.Affirming that asking questions and relating narratives are not mutually exclusive, Schama joins the company of philosophers and historians who have also made this case. (shrink)

Why does one theory "succeed" while another, possibly clearer interpretation, fails? By exploring two observationally equivalent yet conceptually incompatible views of quantum mechanics, James T. Cushing shows how historical contingency can be crucial to determining a theory's construction and its position among competing views. Since the late 1920s, the theory formulated by Niels Bohr and his colleagues at Copenhagen has been the dominant interpretation of quantum mechanics. Yet an alternative interpretation, rooted in the work of Louis de Broglie in (...) the early 1920s and reformulated and extended by David Bohm in the 1950s, equally well explains the observational data. Through a detailed historical and sociological study of the physicists who developed different theories of quantum mechanics, the debates within and between opposing camps, and the receptions given to each theory, Cushing shows that despite the preeminence of the Copenhagen view, the Bohm interpretation cannot be ignored. Cushing contends that the Copenhagen interpretation became widely accepted not because it is a better explanation of subatomic phenomena than is Bohm's, but because it happened to appear first. Focusing on the philosophical, social, and cultural forces that shaped one of the most important developments in modern physics, this provocative book examines the role that timing can play in the establishment of theory and explanation. (shrink)

Simon Cushing conducted the following interview with Elizabeth Anderson on 18 June 2014.

Simon Cushing conducted the following interview with Robert Kane on 24 August 2017.

From the beginning, the implications of quantum theory for our most general understanding of the world have been a matter of intense debate. Einstein argues that the theory had to be regarded as fundamentally incomplete. Its inability, for example, to predict the exact time of decay of a single radioactive atom had to be due to a failure of the theory and not due to a permanent inability on our part or a fundamental indeterminism in nature itself. In 1964, John (...) Bell derived a theorem which showed that any deterministic theory which preserved locality would have certain consequences for measurements performed at a distance from one another. An experimental check seems to show that these consequences are not, in fact, realized. The correlation between the sets of events is much stronger than any local deterministic theory could allow. What is more, this stronger correlation is precisely that which is predicted by quantum theory. The astonishing result is that local deterministic theories of the classical sort seem to be permanently excluded. Not only can the individual decay not be predicted, but no future theory can ever predict it. The contributors in this volume wrestle with this conclusion. Some welcome it; others leave open a return to at lease some kind of deterministic world, one which must however allow something like action-at-a distance. How much lit it? And how can one avoid violating relativity theory, which excludes action-at-a-distance? How can a clash between the two fundamental theories of modern physics, relativity and quantum theory, be avoided? What are the consequences for the traditional philosophic issue of causality explanation and objectivity? One thing is certain; we can never return to the comfortable Newtonian world where everything that happened was, in principle, predictable and where what happened at one measurement site could not affect another set of measurements being performed light-years away, at a distance that a light-signal could not bridge. Contributors: James T. Cushing, Abner Shimony, N. David Mermin, Jon P. Jarrett, Linda Wessels, Bas C. van Fraassen, Jeremy Butterfield, Michael L. G. Redhead, Henry P. Stapp, Arthur Fine, R. I. G. Hughes, Paul Teller, Don Howard, Henry J. Folse, and Ernan McMullin. (shrink)

The recent philosophy of Quantum Bayesianism, or QBism, represents an attempt to solve the traditional puzzles in the foundations of quantum theory by denying the objective reality of the quantum state. Einstein had hoped to remove the spectre of nonlocality in the theory by also assigning an epistemic status to the quantum state, but his version of this doctrine was recently proved to be inconsistent with the predictions of quantum mechanics. In this essay, I present plausibility arguments, old and new, (...) for the reality of the quantum state, and expose what I think are weaknesses in QBism as a philosophy of science. (shrink)

Perry Hendricks’ ‘impairment argument’, which he has defended in this journal, is intended to demonstrate that the generally conceded wrongness of giving a fetus fetal alcohol syndrome (FAS) shows that abortion must also be immoral, even if we allow that the fetus is not a rights-bearing moral person. The argument fails because the harm of causing FAS is extrinsic but Hendricks needs it to be intrinsic for it to show anything about abortion. Either the subject of the wrong of causing (...) FAS is a person who does not exist in the case of abortion or the wrong is negligible. (shrink)

Love has been a topic of interest to philosophy since at least the time of Plato’s Symposium, but with a few notable exceptions, it was unduly neglected in the twentieth century, at least by writers in the analytic tradition that predominates in the English-speaking world. However, in the past quarter century, writing on the topic has exploded. In this volume, we touch on most of the currently hot debates and also introduce some fascinating tangents. The main threads of discussion reflected (...) in this volume are as follows: the relationship between love and morality ; whether love is rational, subject to reasons for or against it, or a force that is not under our intentional control; and whether love affects the way we perceive the world or the way we value things in the world. More singular topics include: whether love would be affected by disputes in the literature on free will; whether we could be mistaken about being in love; whether our pets are capable of loving us back; whether a relationship of the kind shown in the movie her between a human and an artificial intelligence could be either loving or ethical; and whether the difference between patriotism and nationalism hinges on how each instances a different kind of love. Along the way we will see analyses of the work of philosophical greats like Immanuel Kant as well as the work of more contemporary writers, in particular Iris Murdoch, and philosophers actively engaged in the current revival, notably Harry Frankfurt, J. David Velleman, and Niko Kolodny. (shrink)

We review the dynamical approach to spacetime theories---in particular, its origins in the development of special relativity, its opposition to the contemporary `geometrical' approach, and the manner in which it plays out in general relativity. In addition, we demonstrate that the approach is compatible with the `angle bracket school'.

This book examines a selection of philosophical issues in the context of specific episodes in the development of physical theories. Advances in science are presented against the historical and philosophical backgrounds in which they occurred. A major aim is to impress upon the reader the essential role that philosophical considerations have played in the actual practice of science. The book begins with some necessary introduction to the history of ancient and early modern science, with major emphasis being given to the (...) two great watersheds of twentieth-century physics: relativity and, especially, quantum mechanics. At times the term 'construction' may seem more appropriate than 'discovery' for the way theories have developed and, especially in the later chapters, the question of the influence of historical, philosophical and even social factors on the very form and content of scientific theories is discussed. (shrink)

The ubiquity of chaos in classical mechanics (CM), as opposed to the situation in standard quantum mechanics (QM), might be taken as speaking against QM being the fundamental theory of physical phenomena. Bohmian mechanics (BM), as a formulation of quantum theory, may clarify both the existence of chaos in the quantum domain and the nature of the classical limit. Two interesting possibilities are (i) that CM and classical chaos are included in and underwritten by quantum mechanics (BM) or (ii) that (...) BM and CM simply possess a common region of (noninclusive) overlap. In the latter case, neither CM nor QM alone would be sufficient, even in principle, to account for all of the physical phenomena we encounter. In this talk I shall summarize and discuss the implications of some recent work on chaos and on the classical limit within the framework of BM. (shrink)

Some people commonly know a proposition just in case they all know it, they all know that they all know it, they all know that they all know that they all know it, and so on. They commonly believe a proposition just in case they all believe it, they all believe that they all believe it, they all believe that they all believe that they all believe it, and so on. A long tradition in economic theory, theoretical computer science, linguistics (...) and philosophy has held that people have some approximation of common knowledge or common belief in a range of circumstances, for example, when they are looking at an object together, or when they have just discussed something explicitly in conversation. In this paper, I argue that people do not have any approximation of common knowledge or common belief in these circumstances. The argument suggests that people never have any approximation of common knowledge or common belief. (shrink)

'..... And then there were none', is a collaborative book by four New Zealand photographers and a writer. Developed over the last two years with regular meetings indulgent in wine and homemade cheese as excuses for friendship and banter, '..... and then there were none' grew from conversations and arguments about mortality, our technologically mired existence and the degradation of the environment. Collaboration in a real sense, Harvey Benge, Jon Carapiet, Haru Sameshima, Stu Sontier, breaks out of conventional authorship (...) based story-telling, to play out their anxieties and doubts about the world they see, as one visual voice. The author Lloyd Jones adds his contribution of trenchant narrative texts of two scenes of slaughter and one execution. All addicted to travels, the project triggered its own version of flygskam [the feeling of climate guilt associated with airline travel] or the collaborators, conflicted by the international travel that made many of the photographs and the writing possible and tainted by knowing the greater price to be paid. Narratives included from such travels are drenched in sordid human histories that recall the myriad pathways that have led us to now, and to what comes next. The nod to mortality echoing through the book is rendered stark by the recent death of Benge, adding a sense of urgency to the title of the book - not just for the remaining collaborators, but for us all."--Publisher. (shrink)

This paper investigates what the source of time-asymmetry is in thermodynamics, and comments on the question whether a time-symmetric formulation of the Second Law is possible.

We are often told that quantum phenomena demand radical revisions of our scientific world view and that no physical theory describing well defined objects, such as particles described by their positions, evolving in a well defined way, let alone deterministically, can account for such phenomena. The great majority of physicists continue to subscribe to this view, despite the fact that just such a deterministic theory, accounting for all of the phe nomena of nonrelativistic quantum mechanics, was proposed by David Bohm (...) more than four decades ago and has arguably been around almost since the inception of quantum mechanics itself. Our purpose in asking colleagues to write the essays for this volume has not been to produce a Festschrift in honor of David Bohm or to gather together a collection of papers simply stating uncritically Bohm's views on quantum mechanics. The central theme around which the essays in this volume are arranged is David Bohm's version of quantum mechanics. It has by now become fairly standard practice to refer to his theory as Bohmian mechanics and to the larger conceptual framework within which this is located as the causal quantum theory program. While it is true that one can have reservations about the appropriateness of these specific labels, both do elicit distinc tive images characteristic of the key concepts of these approaches and such terminology does serve effectively to contrast this class of theories with more standard formulations of quantum theory. (shrink)

One of the major philosophical problems in physical sciences is what criteria should determine how scientific theories are selected and justified in practice and whether, in describing observable physical phenomena, such theories are effectively constrained to be unique. This book studies the example of a particular theory, the S-matrix theory. The S-matrix program was initiated by Heisenberg to deal with difficulties encountered in quantum field theories in describing particular phenomena. Since then, each theory has at different times been favored as (...) the explanation of observed phenomena. Certainly the S-matrix theory was adequate, feasible and fertile. However, the quantum field theory interpretation is now widely accepted and the study of alternative theories is all but abandoned. By examining the philosophy which influenced the turns in this story, the author explains how an adequate and viable theory fell out of favor and concludes with a critique of different methodologies in the history of science. (shrink)

Empirical adequacy, formal explanation and understanding are distinct goals of science. While no a priori criterion for understanding should be laid down, there may be inherent limitations on the way we are able to understand explanations of physical phenomena. I examine several recent contributions to the exercise of fashioning an explanatory discourse to mold the formal explanation provided by quantum mechanics to our modes of understanding. The question is whether we are capable of truly understanding (or comprehending) quantum phenomena, as (...) opposed to simply accepting the formalism and certain irreducible quantum correlations. The central issue is that of understanding versus merely redefining terms to paper over our ignorance. (shrink)

Simon Cushing conducted the following interview with Eric Olson on 1 July 2016.

We examine the writings of Adam Smith and Milton Friedman regarding their interpretation and use of the concept of self-interest.We argue that neither Smith nor Friedman considers self-interest to be synonymous with selfishness and thus devoid of ethicalconsiderations. Rather, for both writers self-interest embodies an other-regarding aspect that requires individuals to moderate theiractions when others are adversely affected. The overriding virtue for Smith in governing individual actions is justice; for Friedman it isnon-coercion.