The theory of relativity forbids the superluminal travel of ordinary matter. However, it is possible to amend the theory of relativity and to develop a theory permitting superluminal travel. The acceptability of the features needed for superluminal travel is discussed.
Two problems have long been confused with each other: the gravitational redshift as discussed by the equivalence principle; and the Doppler shift observed by a detector which moves with constant proper acceleration away from a stationary source. We here distinguish these two problems and give for the first time a solution of the former which is ‘exact’ within the context of the equivalence principle in a sense discussed in the paper. The equivalence principle leads to transformations between flat spacetimes. These (...) are analyzed, and a generalized Lorentz transformation is proposed which covers transformations from inertial to uniformly accelerated frames of reference. (shrink)
The geodesics and the curvature of a metric representing an isolated tachyon are investigated. It is argued that the properties are unphysical and inconsistent with observation, thus providing further evidence against the existence of tachyons.
ABSTRACTIt is proposed that experts are able to integrate prior contextual knowledge with emergent visual information to make complex predictive judgments about the world around them, often under heightened levels of uncertainty and extreme time constraints. However, limited knowledge exists about the impact of anxiety on the use of such contextual priors when forming our decisions. We provide a novel insight into the combined impact of contextual priors and anxiety on anticipation in soccer. Altogether, 12 expert soccer players were required (...) to predict the actions of an oncoming opponent while viewing life-sized video simulations of 2-versus-2 defensive scenarios. Performance effectiveness and processing efficiency were measured under four conditions: no contextual priors about the action tendencies of the opponent and low anxiety ; no CP and high anxiety ; CP and LA; CP and HA. The provision of contextual priors did not affect processing efficiency, but it improved performance effectiveness... (shrink)
According to N. T. Wright, anyone who is a Christian should at least think twice before he or she speaks about the soul, especially as an entity that is distinct from its physical body and can survive death in a disembodied intermediate state until the resurrection and reembodiment. In Wright’s mind, talk of the soul is talk about soul-body substance dualism, which is the villain in Christian anthropological thought. As far as Wright is concerned, it is time for Christians to (...) renounce dualism once and for all. In this paper, I take issue with Wright’s position on substance dualism. (shrink)
At a 2011 meeting of the Society of Christian Philosophers, N. T. Wright offered four reasons for rejecting the existence of soul. This was surprising, as many Christian philosophers had previously taken Wright's defense of a disembodied intermediate state as a defense of a substance dualist view of the soul. In this paper, I offer responses to each of Wright's objections, demonstrating that Wright's arguments fail to undermine substance dualism. In so doing, I expose how popular arguments against dualism fail, (...) such as dualism is merely an unwarranted influence of Greek culture on Christianity, and substance dualism is merely a soul-of-the-gaps hypothesis. Moreover, I demonstrate that Wright himself has offered a powerful reason for adopting substance dualism in his previous works. In conclusion I offer a view that explains why the human soul needs a resurrected body. (shrink)
Using mobile health research as an extended example, this article provides an overview of when the Common Rule “applies” to a variety of activities, what might be meant when one says that the Common Rule does or does not “apply,” the extent to which these different meanings of “apply” matter, and, when the Common Rule does apply, how it applies.
Max Weber's dominant scholarly concern was the development of rationalism in the West. He exemplified his interest in this theme in his two great works, Economy and Society and The Economic Ethics of the World Religions. In Wolfgang Schluchter's new book, The Rise of Western Rationalism: Max Weber's Developmental History, the author presents an analysis and re-evaluation of Weber's sociology of Western rationalism. He also wants to show Weber's relation to the sociological school of neo-evolutionism. By an examination of Weber's (...) relation to the neo-evolutionary thought of such men as Habermas and Parsons, Schluchter attempts to show that Weber's developmental historical sociology, if properly understood and formulated, is still the best explanatory model of Western rationalism in contemporary sociology. (shrink)
On November 19, 2017, the eighth annual Analytic Theology Lecture was delivered in Boston, Massachusetts by N.T. Wright before the American Academy of Religion. His lecture, titled “The Meanings of History: Event and Interpretation in the Bible and Theology,” is printed here for the first time.
It is well known that the extensional axiom of choice implies the law of excluded middle. We here prove that the converse holds as well if we have the intensional axiom of choice ACint, which is provable in Martin-Löf's type theory, and a weak extensionality principle, which is provable in Martin-Löf's extensional type theory. In particular, EM is equivalent to ACext in extensional type theory.