Nineteenth-century spiritism was a blend of religious elements, the philosophy of mind, science and popular science and contacts with extraterrestrials were a commonplace phenomenon during spiritistic séances. Using the example of Carl du Prel I show how his comprehensive mystic philosophy originated in a theory of extraterrestrial life. Carl du Prel used a Darwinian and monistic framework, theories of the unconscious and a Neo-Kantian epistemology to formulate a philosophy of astronomy and extraterrestrial life. He claimed that the mechanism of Darwinian (...) selection is responsible for the distribution of stars and the orbits of the planets. In his speculations on the nature of extraterrestrial life he used the concept of organ projection to argue that technical solutions on earth will be realized organically on other planets and claimed that superior extraterrestrials have quantitatively and qualitatively different senses and thus different forms of intuition. A comparison with Camille Flammarion, spiritist and populariser of astronomy, demonstrates the contextual complexities of spiritism. In contrast to du Prel’s sober Neo-Kantian philosophical speculations, Flammarion was a late proponent of a French esoteric tradition that was rooted in romantic socialism, painted grand cosmological vistas and emphasized reincarnation. I put forward the hypothesis that current discourses on extraterrestrial life are affected by the spiritist tradition mainly through the ‘Golden Age’ science fiction literature of the 1940s and 50s and its successors. However, neither Carl du Prel nor Camille Flammarion contributed significantly to this tradition, which is mainly shaped by the psychical research of J. B. Rhine.Keywords: Spiritism; Carl du Prel; Camille Flammarion; Organ projection; Science fiction. (shrink)

We consider a confidence parametrization of binary information sources in terms of appropriate likelihood ratios. This parametrization is used for Bayesian belief updates and for the equivalent comparison of binary experiments. In contrast to the standard parametrization of a binary information source in terms of its specificity and its sensitivity, one of the two confidence parameters is sufficient for a Bayesian belief update conditional on a signal realization. We introduce a confidence-augmented receiver operating characteristic for comparisons of binary experiments for (...) a class of “balanced” decision problems, relative to which the confidence order offers a higher resolution than Blackwell’s informativeness order. Where observation is concerned, Chance favors only the prepared mind.—Louis Pasteur (1822–1895). (shrink)

The question of the existence of intelligent life on other worlds has never been a purely scientific one. Philosophical, religious and literary issues have been intertwined with scientific ones throughout the history of the “plurality of worlds” debate. This collection of papers in –Studies in History and Philosophy of Science– explores the interrelation of science, philosophy, religion and literature in debates about extraterrestrial life.

Thomas Weber's book comprises a series of biographical reflections about people who influenced Gandhi, and those who were, in turn, influenced by him. Whilst previous literature tended to focus on Gandhi's political legacy, Weber's book explores the spiritual, social and philosophical resonances of these relationships, and it is with these aspects of the Mahatma's life in mind, that the author selects his central protagonists. These include friends such as Henry Polak and Hermann Kallenbach, who are not as well known as (...) those usually cited, but who left a deep impression nevertheless, and motivated some of Gandhi's major life changes. Conversely, the work of luminaries such as E. F. Schumacher and Gene Sharp reveal the Mahatma's influence in arenas which are not traditionally associated with his thinking. Weber's book offers intriguing insights into the life and thought of one of the most significant figures of the twentieth century. (shrink)

It is natural for humans to judge the outcome of a decision under uncertainty as a percentage of an ex-post optimal performance. We propose a robust decision-making framework based on a relative performance index. It is shown that if the decision maker’s preferences satisfy quasisupermodularity, single-crossing, and a nondecreasing log-differences property, the worst-case relative performance index can be represented as the lower envelope of two extremal performance ratios. The latter is used to characterize the agent’s optimal robust decision, which has (...) implications both computationally and for obtaining closed-form solutions. We illustrate our results in an application which compares the performance of relative robustness to solutions that optimize worst-case payoffs, maximum absolute regret, and expected payoffs under a Laplacian prior. (shrink)

Hydrogen activation on the (100) surface of MoS2 structures was investigated by means of density functional theory calculations. Linear and quadratic synchronous transit methods with a conjugate gradient refinement of the saddle point were used to localize transition states. The calculations include heterolytic and homolytic dissociation of hydrogen; that is, an H2 molecule dissociates on an MoS2 catalyst surface into two hydrogen atoms, which react further with the catalyst surface under formation of either one Mo-H and one S-H (heterolytic) or (...) of two S-H surface groups (homolytic). Our results favor the heterolytic adsorption of hydrogen. Ni- and Co-promoted MoS2 have been considered to investigate the secondary promotional effect on the H2 dissociation. The authors observed a negative secondary promotional influence on the H2 dissociation in the case of Ni-promoted MoS2, whereas Co shows a positive effect. (shrink)

The early biographies of Gandhi were more or less hagiographies, telling the story of Gandhi, the saintly politician and the liberator of colonial India. Even though Gandhi himself had discussed the topics of his lustfulness and his decision to embrace celibacy in his 1927 autobiography, these matters were glossed over or simply ignored. As time has gone on, Gandhi has caused increasing problems for those of his biographers and interpreters who wanted to hold him up as a paragon but also (...) wanted to tell the truth. And more recently, reevaluations of the Gandhi story have at times bordered on the sensational through the documentation of his eccentricities and religious austerities and in particular his attitudes to sexuality and his ‘experiments’ with the power of celibacy.In 1946, Nirmal Kumar Bose became Gandhi’s translator and secretary during the Mahatma’s Noakhali pilgrimage to bring peace to war-torn rural Bengal. He commenced what would become a central battlefield of Gandhi schol .. (shrink)