By dividing the creation of matter, energy, life, and mind into three big bangs, Holmes Rolston III brings into focus a history of the universe that respects both scientific discovery and the potential presence of an underlying intelligence. Matter-energy appears, initially in simpler forms but with a remarkable capacity for generating heavier elements. The size and expansion rate of the universe, the nature of electromagnetism, gravity, and nuclear forces enable the the explosion of life on Earth. DNA discovers, (...) stores, and transfers information generating billions of species. Cognitive capacities escalate, and with neural sentience this results in human genius. A massive singularity, the human mind gives birth to language and culture, increasing the brain's complexity and promoting the spread of ideas. Ideas generate ideals, which lead life to take on spirit. The nature of matter-energy, genes, and their genesis therefore encourages humans to wonder where they are, who they are, and what they should do. (shrink)

One of the more controversial articles published in the philosophy of criticism during the past twenty-five years is “The Intentional Fallacy” by W. K. Wimsatt, Jr. and Monroe Beardsley. Scholars from a variety of disciplines have expended a lot of energy in attacking and defending the Wimsatt-Beardsley position. Their efforts fall mainly into two classes. Either they have been exploratory with respect to the nature of the concept ‘intention’, but so exploratory as to present no tangible discovery; or they (...) have merely been occasions to air the author’s own views, views which take sides, but views which in the end only serve to define what positions may be taken without really convincing anyone whether one position is clearly better than the other. This dilemma is really rather odd because in a certain sense it is pitifully easy to understand what the intentional fallacy amounts to. There is a kind of minimal meaning to it, and I suspect that introductory students in courses in Aesthetics and Criticism have little difficulty in understanding it. ‘Difficulties’ seem to arise primarily in connection with its implications and general scope within the totality of criticism. However, it would be wrong to conclude that these difficulties have nothing to do with the intentional fallacy. They do. And the reason is this: the way in which one argues for, that is, establishes, the intentional fallacy has much to do with its implications and general scope within the realm of criticism. (shrink)

One of the more controversial articles published in the philosophy of criticism during the past twenty-five years is “The Intentional Fallacy” by W. K. Wimsatt, Jr. and Monroe Beardsley. Scholars from a variety of disciplines have expended a lot of energy in attacking and defending the Wimsatt-Beardsley position. Their efforts fall mainly into two classes. Either they have been exploratory with respect to the nature of the concept ‘intention’, but so exploratory as to present no tangible discovery; or they (...) have merely been occasions to air the author’s own views, views which take sides, but views which in the end only serve to define what positions may be taken without really convincing anyone whether one position is clearly better than the other. This dilemma is really rather odd because in a certain sense it is pitifully easy to understand what the intentional fallacy amounts to. There is a kind of minimal meaning to it, and I suspect that introductory students in courses in Aesthetics and Criticism have little difficulty in understanding it. ‘Difficulties’ seem to arise primarily in connection with its implications and general scope within the totality of criticism. However, it would be wrong to conclude that these difficulties have nothing to do with the intentional fallacy. They do. And the reason is this: the way in which one argues for, that is, establishes, the intentional fallacy has much to do with its implications and general scope within the realm of criticism. (shrink)

The picture of information acquisition as the elimination of possibilities has proven fruitful in many domains, serving as a foundation for formal models in philosophy, linguistics, computer science, and economics. While the picture appears simple, its formalization in dynamic epistemic logic reveals subtleties: given a valid principle of information dynamics in the language of dynamic epistemic logic, substituting complex epistemic sentences for its atomic sentences may result in an invalid principle. In this article, we explore such failures of uniform (...) substitution. First, we give epistemic examples inspired by Moore, Fitch, and Williamson. Second, we answer affirmatively a question posed by van Benthem: can we effectively decide when every substitution instance of a given dynamic epistemic principle is valid? In technical terms, we prove the decidability of this schematic validity problem for public announcement logic (PAL and PAL-RC) over models for finitely many fully introspective agents, as well as models for infinitely many arbitrary agents. The proof of this result illuminates the reasons for the failure of uniform substitution. (shrink)

Martin Hollis; Atomic Energy and Moral Glue, Journal of Philosophy of Education, Volume 23, Issue 2, 30 May 2006, Pages 185–193, https://doi.org/10.1111/j.1467-.

Martin Hollis; Atomic Energy and Moral Glue, Journal of Philosophy of Education, Volume 23, Issue 2, 30 May 2006, Pages 185–193, https://doi.org/10.1111/j.1467-.

The widespread adoption of radioisotopes as tools in biomedical research and therapy became one of the major consequences of the "physicists' war" for postwar life science. Scientists in the Manhattan Project, as part of their efforts to advocate for civilian uses of atomic energy after the war, proposed using infrastructure from the wartime bomb project to develop a government-run radioisotope distribution program. After the Atomic Energy Bill was passed and before the Atomic Energy Commission (...) was formally established, the Manhattan Project began shipping isotopes from Oak Ridge. Scientists and physicians put these reactor-produced isotopes to many of the same uses that had been pioneered with cyclotron-generated radioisotopes in the 1930s and early 1940s. The majority of early AEC shipments were radioiodine and radiophosphorus, employed to evaluate thyroid function, diagnose medical disorders, and irradiate tumors. Both researchers and politicians lauded radioisotopes publicly for their potential in curing diseases, particularly cancer. However, isotopes proved less successful than anticipated in treating cancer and more successful in medical diagnostics. On the research side, reactor-generated radioisotopes equipped biologists with new tools to trace molecular transformations from metabolic pathways to ecosystems. The U.S. government's production and promotion of isotopes stimulated their consumption by scientists and physicians, such that in the postwar period isotopes became routine elements of laboratory and clinical use. In the early postwar years, radioisotopes signified the government's commitment to harness the atom for peace, particularly through contributions to biology, medicine, and agriculture. (shrink)

The widespread adoption of radioisotopes as tools in biomedical research and therapy became one of the major consequences of the "physicists' war" for postwar life science. Scientists in the Manhattan Project, as part of their efforts to advocate for civilian uses of atomic energy after the war, proposed using infrastructure from the wartime bomb project to develop a government-run radioisotope distribution program. After the Atomic Energy Bill was passed and before the Atomic Energy Commission (...) (AEC) was formally established, the Manhattan Project began shipping isotopes from Oak Ridge. Scientists and physicians put these reactor-produced isotopes to many of the same uses that had been pioneered with cyclotron-generated radioisotopes in the 1930s and early 1940s. The majority of early AEC shipments were radioiodine and radiophosphorus, employed to evaluate thyroid function, diagnose medical disorders, and irradiate tumors. Both researchers and politicians lauded radioisotopes publicly for their potential in curing diseases, particularly cancer. However, isotopes proved less successful than anticipated in treating cancer and more successful in medical diagnostics. On the research side, reactor-generated radioisotopes equipped biologists with new tools to trace molecular transformations from metabolic pathways to ecosystems. The U.S. government's production and promotion of isotopes stimulated their consumption by scientists and physicians (both domestic and abroad), such that in the postwar period isotopes became routine elements of laboratory and clinical use. In the early postwar years, radioisotopes signified the government's commitment to harness the atom for peace, particularly through contributions to biology, medicine, and agriculture. (shrink)

Project Chariot, one of the first planned nuclear excavation experiments of the Atomic Energy Commission’s Plowshare program, touched off a controversy over its safety that drew in two prominent American biologists, Paul Sears and Barry Commoner, both now known mainly for their roles as environmental advocates. However, Sears, the ecologist and well-established conservationist, supported Project Chariot and the Plowshare program in general, while Commoner, unacquainted with ecology at the time, strongly opposed it. A close study of their different (...) responses to this project provides insights into the tensions and pressures on scientists during this critical period of the Cold War, 1960–1961, when fear of nuclear war and concerns over radioactive fallout from bomb tests mixed with hopes for peaceful applications of nuclear energy and the environmental movement had not yet begun. For Sears, the close connections in the United States between the science of ecology and the Atomic Energy Commission may well have played a significant role in his support for Chariot, while for Commoner, Project Chariot turned out to be his epiphany moment, the incident that transformed him from an antinuclear activist into an environmentalist. (shrink)

In 1915, Frederick Soddy, later a winner of the Nobel Prize in Chemistry, warned publicly of the future dangers of atomic war. Hisforesight depended not only upon scientific knowledge, but also upon emotion, creativity, and many sorts of nonscientific knowledge. The latter, which played a role even in the content of Soddy's scientific discoveries, included such diverse sources as contemporary politics, history, science fiction, religion, and ancient alchemy. Soddy's story may offer important, guiding msights for today's efforts in technology (...) assessment. (shrink)

This paper draws attention to the role of the IAEA in shaping radiation dosimetry practices, instrumentation, and standards in the late 1950s and 1960s. It traces the beginnings of the IAEA’s radiation dose intercomparison program which targeted all member states and involved the WHO so as to standardize dosimetry on a global level. To standardize dosimetric measurement methods, techniques, and instruments, however, one had to devise a method of comparing absorbed dose measurements in one laboratory with those performed in others (...) with a high degree of accuracy. In 1964 the IAEA thus started to build up what I call the “global experiment,” an intercomparison of radiation doses with participating laboratories from many of its member states. To carry out the process of worldwide standardization in radiation dosimetry, I argue, an organization with the diplomatic power and global reach of the IAEA was absolutely necessary. Thus, “global experiment” indicates a novel understanding of the experimental process. What counts as an experiment became governed by a process that was designed and strictly regulated by an international organization; it took place simultaneously in several laboratories across the globe, while experimental data became centrally owned and alienated from those that produced it. (shrink)

The consequences of a generalized Dirac equation are discussed for the energy levels of the hydrogen atom. Apart from the usual generalizations of the Dirac equation by adding new interaction terms, we generalize the anticommutation rule of the Dirac matrices, which leads to spin-dependent propagation properties. Such a theory can be looked at as a model theory for testing Lorentz invariance or as an outcome of pregeometric dynamical induction schemes for space-time structure.For special examples of generalized Dirac matrices including (...) perturbation terms with respect to the SRT Dirac matrices, we derive the energy level of the hydrogen atom and find a hyperfine splitting due to these perturbations. A comparison of this additional splitting with Lamb shift measurements gives us upper limits for possible perturbations, which turn out to be of measurable magnitude. Spin precession experiments give much more restrictive limits. So, it turns out that the hydrogen atom is not such a sensitive indicator for the Lorentz invariance as widely believed. (shrink)

Drawing upon the concepts of civic epistemologies and sociotechnical imaginaries, this article delves into the history of nuclear energy in Portugal, analyzing the ways in which the nuclear endeavor was differently enacted by various sociopolitical collectives – the Fascist State, post-revolutionary governments and the public. Following the 1974 revolution - known as the Carnation Revolution - this paper analyzes how the nuclear project was fiercely contested by a vibrant anti-nuclear movement assembled against the construction of the Ferrel Nuclear Plant, (...) the first sociotechnical controversy in Portugal, paving the way for the emergence of a combative civic epistemology. Supported by semi-structured interviews with scientists, activists and local residents of Ferrel and the analysis of historical material, this article presents the failed Portuguese nuclear endeavor as an emblematic case study to explore the co-production of science and society, in particular the role of revolutionary processes in the unfolding of sociotechnical controversies. (shrink)

The structure of the rate of variation of the atomic energy for an arbitrary stationary motion of the atom in interaction with a quantum electromagnetic field is investigated. Our main purpose is to rewrite the formalism in Zhu et al. and to deduce the general expressions of the Einstein A coefficients of an atom on an arbitrary stationary trajectory. The total rate of change of the energy and Einstein coefficients of the atom near a plate with finite (...) temperature or acceleration are also investigated. (shrink)