In recent years, the hope to confirm the existence of dark matter by experimentally detecting it has diminished significantly. After more than 30 years of experimental searches, many of the most promising candidates have since been ruled out, leaving the epistemic and scientific condition of dark matter in a state of suspension. In efforts to improve the epistemic justification for the dark-matter hypothesis, physicists have turned to philosophical arguments and historical narratives. In this paper, (...) I explicate two such strategies -- explanatory unification and historical continuity -- applied in the context of dark matter. I argue that greater care and attention should be invested in the explanatory arguments to increase their strength, and that a survey of primary historical sources in astronomy renders the historical evidence for the continuity of dark matter substantially weaker. The quality and rigor of the philosophical and historical arguments which physicists are constructing could be substantially improved by increasing interdisciplinary practices. (shrink)

Emergent research in metagenomics has unveiled large quantities of previously unknown and unclassified prokaryotic DNA. As these prokaryotes constitute the vast majority of microbial life in environmental samples, some microbiologists and commentators in scientific media have referred to this expansive unknown as ‘biological dark matter’, translating the rhetorical power of dark matter from the physical to the life sciences. Engaging literatues and approaches from across the philosophy, history, and social studies of science, we explore the (...) cultural significance of the dark matter theory in the physical sciences and examine the implications of its conceptual reworking in biology, through critically engaging the political narratives folded within dark matter’s genealogies. ‘Dark matter’ designates both zones of importance and zones of turbulence, simultaneously emphasizing microbiologists’ creativity whilst constructing new ways of relating to microbiota. Such a situation, we propose, also invites theoretical analysis as it calls for a conceptual reconsideration of the gene and its fundamental role within the life sciences. (shrink)

This dissertation examines the dynamical dark matter problem in twentieth century astrophysics from the point of view of History and Philosophy of Science. The dynamical dark matter problem describes the situation astronomers find themselves in with regard to the dynamics of large scale astrophysical systems such as galaxies and galaxy clusters: The observed motions are incompatible with the visible distribution matter given the accepted law of gravitation. This discrepancy has two classes of possible solutions: (...) either there exists copious amounts of some kind of matter that neither emits nor absorbs radiation , or the law of gravitation must be revised. ;Chapter 2 describes the physical and philosophical foundations of dynamical inferences---inferences from discrepancies between well-founded theoretical expectations and reliable observations to the characteristics of candidate solutions. Chapter 3 discusses the history of dark matter . Chapter 4 reviews the present evidence bearing on the dark matter problem. Chapter 5 evaluates the important candidate matter solutions in light of the available evidence. Chapter 6 evaluates two candidate gravitational solutions on evidential and methodological grounds, and addresses the problem of theory choice. I do not try to solve the dark matter problem, but to uncover and evaluate patterns of inference involved in evidential arguments for and against candidate solutions. ;I show that Newton's "Reasoning from Phenomena" is a good framework from which to understand what is going on in this field. I argue that "higher order" and especially non-dynamical evidence is the best hope for solving this problem in dynamics. This is so in part because of "the dark matter double bind": the very existence of the dark matter problem means that we cannot be sure of the overall matter distribution in astrophysical systems, and this in turn means that the observed motions by themselves cannot provide relative confirmation of any theory of gravitational interactions taking place at these scales. I use Newton's Rules of Reasoning to argue that we should retain General Relativity as our theory of gravity at galactic and greater scales, despite the lack of positive evidence to confirm it over its rivals at these scales. (shrink)

According to the standard model of cosmology, Λ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Lambda $$\end{document}CDM, the mass-energy budget of the current stage of the universe is not dominated by the luminous matter that we are familiar with, but instead by some form of dark matter (and dark energy). It is thus tempting to adopt scientific realism about dark matter. However, there are barely any constraints on the myriad of possible properties of (...) this entity—it is not even certain that it is a form of matter. In light of this underdetermination I advocate caution: we should not (yet) be dark matter realists. The “not(-yet)-realism” that I have in mind is different from Hacking’s (Philos Sci 56 (4), 555–581, 1989) anti-realism, in that it is semantic rather than epistemological. It also differs from the semantic anti-realism of logical empiricism, in that it is naturalistic, such that it may only be temporary and does not automatically apply to all other unobservables (or even just to all other astronomical unobservables, as with Hacking’s anti-realism). The argument is illustrated with the analogy of the much longer history of the concept of a gene, as the current state of the concept of dark matter resembles in some relevant ways that of the early concept of genes. (shrink)

This paper scrutinises the tenability of a strict conceptual distinction between space and matter via the lens of the debate between modified gravity and dark matter. In particular, we consider Berezhiani and Khoury's novel 'superfluid dark matter theory' as a case study. Two families of criteria for being matter and being spacetime, respectively, are extracted from the literature. Evaluation of the new scalar field postulated by SFDM according to these criteria reveals that it is (...) as much matter as anything could possibly be, but alsoꟷbelow the critical temperature for superfluidityꟷas much spacetime as anything could possibly be. A sequel paper examines possible interpretations of SFDM in light of this result, as well as the consequences for our understanding of the modified gravity/ dark matter distinction and the broader spacetime–matter distinction. (shrink)

Unravelling the thought of Alexander Kluge and Oskar Negt Collaborators for more than four decades, lawyer, author, filmmaker, and multimedia artist Alexander Kluge and social philosopher Oskar Negt are an exceptional duo in the history of Critical Theory precisely because their respective disciplines think so differently. Dark Matter argues that what makes their contributions to the Frankfurt School so remarkable is how they think together in spite of these differences. Kluge and Negt's "gravitational thinking" balances not only (...) the abstractions of theory with the concreteness of the aesthetic, but also their allegiances to Frankfurt School mentors with their fascination for other German, French, and Anglo-American thinkers distinctly outside the Frankfurt tradition. At the core of all their adventures in gravitational thinking is a profound sense that the catastrophic conditions of modern life are not humankind's unalterable fate. In opposition to modernity's disastrous state of affairs, Kluge and Negt regard the huge mass of dark matter throughout the universe as the lodestar for thinking together with others, for dark matter is that absolute guarantee that happier alternatives to our calamitous world are possible. As illustrated throughout Langston's study, dark matter's promise--its critical orientation out of catastrophic modernity--finds its expression, above all, in Kluge's multimedia aesthetic. (shrink)

Dark matter is an essential ingredient of the present Standard Cosmological Model, according to which only 5% of the mass/energy content of our universe is made of ordinary matter. In recent times, it has been argued that certain cases of gravitational lensing represent a new type of evidence for the existence of DM. In a recent paper, Peter Kosso attempts to substantiate that claim. His argument is that, although in such cases DM is only detected by its (...) gravitational effects, gravitational lensing is a direct consequence of Einstein's Equivalence Principle and therefore the complete gravitational theory is not needed in order to derive such lensing effects. In this paper I critically examine Kosso's argument: I confront the notion of empirical evidence involved in the discussion and argue that EEP does not have enough power by itself to sustain the claim that gravitational lensing in the Bullet Cluster constitutes evidence for the DM Hypothesis. As a consequence of this, it is necessary to examine the details of alternative theories of gravity to decide whether certain empirical situations are indeed evidence for the existence of DM. It may well be correct that gravitational lensing does constitute evidence for the DM Hypothesis—at present it is controversial whether the proposed modifications of gravitation all need DM to account for the phenomenon of gravitational lensing and if so, of which kind—but this will not be a direct consequence of EEP. (shrink)

Species that died without leaving descendants Darwin called ‘utterly extinct’. They far outnumber the ancestors of all living things, so they resemble the dark matter of modern cosmology, which far outweighs visible matter. He realized in 1837 that their absence is what creates the groups in a natural classification. In his Notebook B he combined the idea that species multiply with the idea that ancestors' relatives must mostly be extinct. The fossil Megatherium was utterly extinct. The iconic (...) branching ‘I think’ diagram shows extinction causing the origin of genera by eliminating intermediate species. Darwin’s concept of taxonomic ranks, starting with the genus, was informed by his interaction with taxonomists. Based on his familiarity with demography, Darwin reasoned that the survival of transitional forms was unlikely, which helped him decide to focus at the species level. When drafting his theory in the 1840s, he left out these speculative ideas, but they emerged again in the 1850s when he realized his theory needed a cause for branches to diverge. His ecological answer worked at the species level, but his Principle of Divergence was unconvincing at higher taxonomic levels. In the Origin, Darwin repeatedly insisted on the importance of utter extinction. (shrink)

When a scientist is the first to perform a difficult type of observation and correctly interprets the result as a significant challenge to then-widely accepted core theories, and the result is later recognized as seminal work in a field of major importance, it is a surprise to find that that work was essentially ignored by the scientific community for thirty years. Such was the fate of the doctoral research on the rotations of the Andromeda Nebula (M31) conducted by Horace Welcome (...) Babcock (1912–2003), who went on to become a very prominent astronomer — in an entirely different sub-field, never working on the subject of his dissertation again. This paper seeks to explain the ‘non-reception’ of Babcock’s work on galactic dynamics and the reasons he did no further work in that sub-field. In particular this paper shows that, contrary to the claims of some commentators, the non-reception of Babcock’s work should not be understood as an example of the unjust treatment of a young scientist by the conservative establishment. (shrink)

We describe a case of indeterminacy in general relativity for homogeneous and isotropic cosmologies for a class of dark energy fluids. The cosmologies are parametrized by an equation of state variable, with one instance giving the same solution as Norton’s mechanical dome. Our example goes beyond previously studied cases in that indeterminacy lies in the evolution of spacetime itself: the onset of the Big Bang is indeterminate. We show further that the indeterminacy is resolved if the dynamics is viewed (...) relationally. (shrink)

Paul Feyerabend argued that theories can be faced with experimental anomalies whose refuting character can only be recognized by developing alternatives to the theory. The alternate theory must explain the experimental results without contrivance and it must also be supported by independent evidence. I show that the situation described by Feyerabend arises again and again in experiments or observations that test the postulates in the standard cosmological model relating to dark matter. The alternate theory is Milgrom’s modified dynamics. (...) I discuss three examples: the failure to detect dark-matter particles in laboratory experiments; the lack of evidence for dark-matter sub-haloes and the dwarf galaxies that are postulated to inhabit them; and the failure to confirm the predicted orbital decay of Milky Way satellite galaxies and other systems due to dynamical friction against the dark matter. In each case, Feyerabend’s criterion directs us to interpret the experimental or observational results as an indirect refutation of the standard cosmological model in favor of Milgrom’s theory. (shrink)

Der Beitrag diskutiert das Verhältnis zwischen Experiment und Ästhetik, indem er von zwei zeitgenössischen künstlerischen Erfahrungen ausgeht: Der Ausstellung SOMA von Carsten Höller, die im Hamburger Bahnhof in Berlin im Winter 2010/11 gezeigt wurde, und einem Clip der Performance Dark Matter von Kate McIntosh. Beide Werke stellen das Experiment im Kontext der Künste zur Debatte und führen gleichzeitig zur Vervielfältigung seiner Bedeutung. SOMA stellt ›Spiele des Sehens‹ vor, die den ästhetischen Charakter eines Experimentes und die ›miseen-scène‹ verschiedener Situationen (...) der Beobachtung prüfen. Dark Matter spielt auf wissenschaftliche Ordnungen der Präsentation an und zieht die Aufmerksamkeit des Zuschauers auf die Dramaturgie des Experiments, das Raum für neue Methoden der Mobilisierung oder Korrelierung macht. The paper discusses the relation of experiment and aesthetics starting from two recent artistic experiences: the exhibition SOMA by Carsten Höller, shown at Hamburger Bahnhof in Berlin in winter 2010/11, and an extracted clip of the performance Dark Matter by Kate McIntosh. Both works put up for discussion the experiment in the context of the arts and at the same time, lead to the multiplication of its meaning. SOMA provides ›games of seeing‹ testing the aesthetic character of an experiment’s architecture and the ›mise-en-scène‹ of different situations of observation. Dark Matter plays upon scientific orders of presentation dragging the spectator’s attention to the dramaturgy of the experiment, which makes space for a new methods of mobilization or correlation. (shrink)

Recent attempts to explain the dark matter and energy content of the universe have involved some radical extensions of standard physics, including quintessence, phantom energy, additional space dimensions, and variations in the speed of light. In this paper I consider the possibility that some dark matter might be in the form of tachyons. I show that, subject to some reasonable assumptions, a tachyonic cosmological fluid would produce distinctive effects, such as a surge in quantum vacuum energy (...) and particle creation, and a change in the conventional temperature–time relation for the normal cosmological material. Possible observational consequences are discussed. (shrink)

It is suggested that the dark matter of the universe is due to the presence of a scalar field described by the gauge function introduced by Dirac in his modification of the Weyl geometry. The behavior of such dark matter is investigated.

It is commonly assumed that low-mass primordial black holes cannot constitute a significant fraction of the dark matter in our universe due to their predicted short lifetimes from the conventional Hawking radiation and evaporation process. Assuming physical black holes are nonsingular--likely due to quantum gravity or other high-energy physics--we demonstrate that a large class of nonsingular black holes have finite evaporation temperatures. This can lead to slowly evaporating low-mass black holes or to remnant mass states that circumvent traditional (...) evaporation constraints. As a proof of concept, we explore the limiting curvature hypothesis and the evaporation process of a nonsingular black hole solution in two-dimensional dilaton gravity. We identify generic features of the radiation profile and compare them with known regular black holes, such as the Bardeen solution in four dimensions. Remnant masses are proportional to the fundamental length scale, and we argue that slowly evaporating low-mass nonsingular black holes, or remnants, are viable dark matter candidates. (shrink)

MANY moons from now, when extraterrestrial archeologists sift through the records of our brief civilization, they might be amused to stumble across the proceedings of an annual convention of stargazers called the American Astronomical Society. They would be right in concluding that 1996 was, in one way or another, a landmark year.

We present a new approach to the mathematical objects of General Relativity in terms of which a generic f(R)-gravity theory gravitation is written in a first-order (à la Palatini) formalism, and introduce the concept of Dark Metric which could bypass the emergence of disturbing concepts as Dark Energy and Dark Matter. These issues are related to the fact that General Relativity could not be the definitive theory of Gravitation due to several shortcomings that come out both (...) from theoretical and experimental viewpoints. At large scales, the attempts to match it with the recent observational data lead to invoke Dark Energy and Dark Matter as the bulk components of the cosmic fluid. Since no final evidence, at fundamental level, exists for such ingredients, it could be useful to reconsider the gravitational sector in order to see if suitable extensions of General Relativity could solve the shortcomings present at infrared scales. (shrink)

Shadows haunt the world of common sense by being “out there” independently of whether anyone is looking. Yet they are confi ned to a single sense: sight. Like ghosts, shadows evade tactile corroboration. They do not obey the laws governing material things.

The evidence of the phenomenon for which, in galaxies, the gravitating mass is distributed differently than the luminous mass, increases as new data become available. Furthermore, this discrepancy is well structured and it depends on the magnitude and the compactness of the galaxy and on the radius, in units of its luminous size \, where the measure is performed. For the disk systems with \ all this leads to an amazing scenario, revealed by the investigation of individual and coadded rotation (...) curves, according to which, the circular velocity follows, from their centers out to their virial radii, an universal profile \\) function only of the properties of the luminous mass component. Moreover, from the Universal Rotation Curve, so as from many individual high quality RCs, we discover that, in the innermost regions of galaxies, the DM halo density profiles are very shallow. Finally, the disk mass, the central halo density and its core radius, come out all related to each other and to two properties of the distribution of light in galaxies: the luminosity and the compactness. This phenomenology, being absent in the simplest \ Cosmology scenario, poses serious challenges to the latter or, alternatively, it requires a substantial and tuned involvement of baryons in the formation of the galactic halos. On the other side, the URC helps to explain the two-accelerations relationship found by McGaugh et al., in terms of only well known astrophysical processes, acting in a standard DM halos + luminous disks scenario. (shrink)

Empirical and theoretical evidence show that the astrophysical problem of dark matter might be solved by a theory of Einstein-Mayer type. In this theory, up to global Lorentz rotations, the reference system is determined by the motion of cosmic matter. Thus, one is led to a “Riemannian space with teleparallelism” realizing a geometric version of the Mach-Einstein doctrine. The field equations of this gravitational theory contain hidden matter terms, where the existence of hidden matter is (...) inferred solely from its gravitational effects. It is argued that, in the nonrelativistic mechanical approximation, they provide an inertia-free mechanics, where the inertial mass of a body is induced by the gravitational action of the comic masses. Interpreted from the Newtonian point of view, this mechanics shows that the effective gravitational mass of astrophysical objects depends on r such that one expects the existence of dark matter. (shrink)

Current cosmological observations place little constraints on the nature of dark matter, allowing the development of a large number of models and various methods for probing their properties, which seem to provide ideal grounds for the employment of robustness arguments. In this article, the extent to which such arguments can be used to overcome various methodological and theoretical challenges is examined. The conclusion is that while robustness arguments have a limited scope in the context of dark (...) class='Hi'>matter research, they can still be used for increasing the scientists’ confidence about the properties of specific models. (shrink)

Two approaches have emerged to resolve discrepancies between predictions and observations at galactic and cosmological scales: introducing dark matter or modifying the laws of gravity. Practitioners of each approach claim to better satisfy a different explanatory ideal, either unification or simplicity. In this chapter, we take a closer look at the ideals and at the successes of these approaches in achieving them. Not only are these ideals less divisive than assumed, but moreover we argue that the approaches are (...) focusing on different aspects of the same ideal. This realisation opens up the possibility of a more fruitful trading zone between dark matter and modified gravity communities. (shrink)

A model of a three-dimensional quantum vacuum based on Planck energy density as a universal property of a granular space is suggested. The possibility to provide an unifying explanation of dark matter and dark energy as phenomena linked with the fluctuations of the three-dimensional quantum vacuum is explored. The changes and fluctuations of the quantum vacuum energy density generate a curvature of space–time similar to the curvature produced by a “dark energy” density. The formation of large (...) scale structures in the universe associated to the flattening of the orbital speeds of the spiral galaxies can be explained in terms of primary fluctuations of the quantum vacuum energy density without attracting the idea of dark matter. (shrink)

The three of us (be)come together, yes on Zoom calls and in Google docs, and in a way that re-imagines the sitting together at a well-worn kitchen table to animate our current shared preoccupations. The table has seen many conversations before us, so it’s well-worn by feminist scholars who were also troubled, yearning, and adamant about leaving their marks. We have come to, become at, this type of table for centuries, sitting together preparing food, folding laundry, and washing up, all (...) while also reckoning that our stories matter and can make a difference. In a context that is both practical and intellectual – centring fat liberation in public health nutrition – how do we remain good scholarly support to one another in and through challenging times? Times of dissent. Times of tedium. This chapter reveals the stories we need most now as we grapple with our places in the neoliberal university and public health pedagogy, specifically as a critique of policies that we read as non-liberatory. We grapple with how our complicity within these spaces might be considered from a place of mutual support and a shared commitment to unlearning and unsettling colonial ways of knowing, especially as we contemplate the problematics of public health imperatives regarding “intuitive eating” and health behaviour change. And we ask what this means for scholarship that is accountable to liberation, that is, personal survival and collective healing and learning. (shrink)

The paper discusses the origin of dark matter and dark energy from the concepts of time and the totality in the final analysis. Though both seem to be rather philosophical, nonetheless they are postulated axiomatically and interpreted physically, and the corresponding philosophical transcendentalism serves heuristically. The exposition of the article means to outline the “forest for the trees”, however, in an absolutely rigorous mathematical way, which to be explicated in detail in a future paper. The “two deductions” (...) are two successive stage of a single conclusion mentioned above. The concept of “transcendental invariance” meaning ontologically and physically interpreting the mathematical equivalence of the axiom of choice and the well-ordering “theorem” is utilized again. Then, time arrow is a corollary from that transcendental invariance, and in turn, it implies quantum information conservation as the Noether correlate of the linear “increase of time” after time arrow. Quantum information conservation implies a few fundamental corollaries such as the “conservation of energy conservation” in quantum mechanics from reasons quite different from those in classical mechanics and physics as well as the “absence of hidden variables” (versus Einstein’s conjecture) in it. However, the paper is concentrated only into the inference of another corollary from quantum information conservation, namely, dark matter and dark energy being due to entanglement, and thus and in the final analysis, to the conservation of quantum information, however observed experimentally only on the “cognitive screen” of “Mach’s principle” in Einstein’s general relativity. therefore excluding any other source of gravitational field than mass and gravity. Then, if quantum information by itself would generate a certain nonzero gravitational field, it will be depicted on the same screen as certain masses and energies distributed in space-time, and most presumably, observable as those dark energy and dark matter predominating in the universe as about 96% of its energy and matter quite unexpectedly for physics and the scientific worldview nowadays. Besides on the cognitive screen of general relativity, entanglement is available necessarily on still one “cognitive screen” (namely, that of quantum mechanics), being furthermore “flat”. Most probably, that projection is confinement, a mysterious and ad hoc added interaction along with the fundamental tree ones of the Standard model being even inconsistent to them conceptually, as far as it need differ the local space from the global space being definable only as a relation between them (similar to entanglement). So, entanglement is able to link the gravity of general relativity to the confinement of the Standard model as its projections of the “cognitive screens” of those two fundamental physical theories. (shrink)

In recent decades, widespread rejection of positivism’s notorious hostility toward the philosophical tradition has led to renewed debate about the real relationship of philosophy to its history. How History Matters to Philosophy takes a fresh look at this debate. Current discussion usually starts with the question of whether philosophy’s past should matter, but Scharff argues that the very existence of the debate itself demonstrates that it already does matter. After an introductory review of the recent literature, (...) he develops his case in two parts. In Part One, he shows how history actually matters for even Plato’s Socrates, Descartes, and Comte, in spite of their apparent promotion of conspicuously ahistorical Platonic, Cartesian, and Positivistic ideals. In Part Two, Scharff argues that the real issue is not whether history matters; rather it is that we already have a history, a very distinctive and unavoidable inheritance, which paradoxically teaches us that history’s mattering is merely optional. Through interpretations of Dilthey, Nietzsche, and Heidegger, he describes what thinking in a historically determinate way actually involves, and he considers how to avoid the denial of this condition that our own philosophical inheritance still seems to expect of us. In a brief conclusion, Scharff explains how this book should be read as part of his own effort to acknowledge this condition rather than deny it. (shrink)

Liberalism in Dark Times seeks to reconstruct an ethically oriented form of liberalism that is demanding, skeptical, and non-perfectionist. My friendly, astute interlocutors appropriately hold me t...

Liberalism in Dark Times is an important and original contribution to the new wave of historical scholarship on liberalism that emerged around the turn of the century and has gained considerable mo...

Baker argues that quantitative parsimony—the principle that hypotheses requiring fewer entities are to be preferred over their empirically equivalent rivals—is a rational methodological criterion because it maximizes explanatory power. Baker lends plausibility to his account by confronting it with the example of postulating of the neutrino in order to resolve a discrepancy in Beta decay experiments. Baker’s account is initially attractive, but I argue that its details are problematic and that it yields undesirable consequences when applied to the case of (...) astrophysical dark matter. Baker has not succeeded in showing why quantitative parsimony is a theoretical virtue. (shrink)

A major figure in women's studies and a long-term activist for women's issues, Gerda Lerner is a pioneer in the field of Women's History and one of its leading practitioners. "Why History Matters" is a summation of her work which includes pieces on the author's early life as a Jewish refugee from Nazi Germany and on her slow assimilation into American life.

Alternate View Column AV-91 Keywords: dark matter WIMPs weakly interacting massive particles detection DNA eV energy deposition Published in the September-1998 issue of Analog Science Fiction & Fact Magazine ; This column was written and submitted 02/20/98 and is copyrighted ©1998 by John G. Cramer. All rights reserved. No part may be reproduced in any form without the explicit permission of the author.

Is moral responsibility essentially historical, or does an agent's moral responsibility for an action depend only on their psychological structure at that time? In previous work, I have argued that the two main (non‐skeptical) views on moral responsibility and agents’ histories—historicism and standard structuralism—are vulnerable to objections that are avoided by a third option, namely history‐sensitive structuralism. In this paper, I develop this view in greater detail and evaluate the view by comparing it with its three dialectical rivals: skepticism (...) about moral responsibility, historicism, and standard structuralism. Each comparison includes discussion of new work on moral responsibility and agents’ histories, and along the way I offer new arguments for preferring history‐sensitive structuralism, paying special attention to the view's explanatory power. (shrink)

The target article's approach is applauded, but it is suggested that the may be much larger than even the current authors suspect. Cartesian and mechanistic assumptions infuse not only the discipline of cognitive psychology, but all societal accounts of the person. A switch to dynamical accounts in which lawfulness is observed within a given systemic context is suggested.

The singularity theorems of the 1960s showed that Lemaître’s initial symmetry assumptions were not essential for deriving a big-bang origin for a vast multitude of relativistic universe models. Yet the actual universe accords remarkably closely with models of Lemaître’s type. This is a mystery closely related to the form taken by the 2nd law of thermodynamics and is not explained by currently conventional inflationary cosmology. Conformal cyclic cosmology provides another perspective on these issues, one consequence being the necessary initial presence (...) of a dominant scalar material that interacts only gravitationally, but which must ultimately slowly decay away in a novel but perhaps detectable way. According to CCC, our current universe picture provides but one aeon of an unending succession of expanding aeons each having an initial big bang which is the conformal continuation of the remote exponential expansion of its previous aeon. The observational status of CCC is briefly discussed. (shrink)

Since the discovery of dark matter in the 1980s, multiple experiments have been set up to detect dark matter particles through some other mode than gravity. Particle physicists provide detailed jus...

This issue of our journal – while asking crucial questions about today’s world and our future challenges – contains thoughtful pieces attending to history. It has been compiled while the war in Ukr...

In ‘Alternate Possibilities and Moral Responsibility,’ Harry Frankfurt introduces a scenario aimed at showing that the having of alternative possibilities is not required for moral responsibility. According to the Principle of Alternative Possibilities (PAP), an agent is morally responsible for her action only if she could have done otherwise; Frankfurt thinks his scenario shows that PAP is, in fact, false. Frankfurt thinks that the denial of PAP gives credence to compatibilism, the thesis that an agent could both be causally determined (...) in all her actions and yet be morally responsible.1 Since its introduction, Frankfurt’s original ex-. (shrink)