The leitmotif of Mario Bunge’s work was that the philosophy of science should be informed by a comprehensive scientific philosophy, and vice versa; with both firmly rooted in realism and materialism. Now Bunge left such a big oeuvre, comprising more than 70 books and hundreds of articles, that it is impossible to review it in its entirety. In addition to biographical remarks, this obituary will therefore restrict itself to some select issues of his philosophy: his scientific metaphysics, his philosophy of (...) physics, his concept of mechanismic explanation, his philosophy of social science and technology, and his approach to the demarcation problem. The final section will explore why Bunge, despite the extent and depth of his work, has not achieved a more prominent status in the philosophical community. (shrink)

Bayesian confirmation theory is a leading theory to decide the confirmation/refutation of a hypothesis based on probability calculus. While it may be much discussed in philosophy of science, is it actually practiced in terms of hypothesis testing by scientists? Since the assignment of some of the probabilities in the theory is open to debate and the risk of making the wrong decision is unknown, many scientists do not use the theory in hypothesis testing. Instead, they use alternative statistical tests that (...) can measure the risk or the reliability in decision making, circumventing some of the theoretical problems in practice. Therefore, the theory is not very popular in hypothesis testing among scientists at present. However, there are some proponents of Bayesian hypothesis testing, and software packages are made available to accelerate utilization by scientists. Time will tell whether Bayesian confirmation theory can become both a leading theory and a widely practiced method. In addition, this theory can be used to model the belief of scientists when testing hypotheses. (shrink)

In the following paper, I review and critically assess the four standard routes commonly taken to establish that gravitational waves possess energy-momentum: the increase in kinetic energy a GW confers on a ring of test particles, Bondi/Feynman’s Sticky Bead Argument of a GW heating up a detector, nonlinearities within perturbation theory, taken to reflect the fact that gravity contributes to its own source, and the Noether Theorems, linking symmetries and conserved quantities. Each argument is found to either to presuppose controversial (...) assumptions or to be outright spurious. I finally examine the standard interpretation of binary systems, according to which orbital decay is explained in terms of the system’s energy being via GW energy- momentum transport. I contend that a better interpretation, drawing only on the general-relativistic Equations of Motions and the Einstein Equations, is available - and in fact preferable; thereby also an inference to the best explanation for the vindication of GW energy-momentum is blocked. (shrink)

From the geometric formulation of gravity, according to the Einstein-Grosmann-Hilbert equations, of November 1915, as the geodesic movement in the semirimennian manifold of positive curvature, spacetime, where due to absence of symmetries, the conservation of energy-impulse is not possible taking together the material processes and that of the gravitational geometric field, however, given those symmetries in the flat Minkowski spacetime, using the De Sitter model, Einstein linearizing gravitation, of course, really in the absence of gravity, in 1916, purged of some (...) mathematical errors in 1918, he introduced "gravitational waves" as disturbances in the curvature of space, and in the absence of knowing physically what spacetime is and philosophically in dispute, that previously in 1936 and definitively in 1937, Einstein showed they did not exist. It was through the works arising from the dynamics of academic discourse, from the perspective not of Einstein but of Weyl, that Bondi, Pirani, Robinson and Trautman, in the 1950s, after Einstein's death, "gravitational waves" were reintroduced and led to experimental search. In 2002, from Sergei Kopeikin's VLBI experiment, its supposed speed was established, without obtaining unanimous recognition from the community of scientists but rather dividing them. And it was in February 2016 that the aLIGO-aVirgo collaboration announced that they had detected them for the first time. In this work, the history that led to this supposed discovery is presented and it is stated that the waves detected are really from the quantum vacuum in which everything that exists is immersed, the author's thesis exposed immediately in response to that 2016 announcement. (shrink)

Desde la formulación geométrica de la gravedad, según la ecuaciones de Einstein-Grosmann-Hilbert, de noviembre de 1915, como el movimiento geodésico en la variedad semirimenniana de curvatura positiva, espaciotiempo, donde por ausencias de simetrías, no es posible la conservación de la energía-impulso tomando en conjunto los procesos materiales y el del campo geométrico gravitacional, sin embargo, dadas esas simetrías en el espaciotiempo plano de Minkowski, usando el modelo de De Sitter, Einstein linealizando la gravitación, por supuesto, realmente en ausencia de gravedad, (...) en 1916, depuradas de algunos errores matemáticos en 1918, introdujó las "ondas gravitacionales" como perturbaciones en la curvatura del espacio, y en ausencia de saber físicamente qué es el espaciotiempo y filosoficamente en pleito, que previamente en 1936 y definitivamente en 1937, Einstein demostró no existían. Fue por parte de los trabajos surgidos de la dinámica del discurrir académico, desde la perspectiva no de Einstein sino de Weyl, que Bondi, Pirani, Robinson y Trautman, en la década de 1950, posterior al fallecimiento de Einstein, las "ondas gravitacionales" fueron reintroducidas y motivaron que experimentalmente se buscaran. En el 2002, a partir del experimento de VLBI de Sergei Kopeikin fue establecida su supuesta velocidad, sin que obtuviera el reconocimiento unánime de la comunidad de científicos sino diviéndolos. Y fue en febrero de 2016, que la colaboración aLIGO-aVirgo anunciaran haberlas detectado por primera vez. En este trabajo se presenta la historia que conllevo a este supuesto descubrimiento y se plantea que las ondas detectadas son realmente del vacío cuántico en el cual está inmerso todo lo existente, tésis del autor expuesta inmediatamente como respuesta a ese anunció de 2016. (shrink)

Black holes are arguably the most extraordinary physical objects we know in the universe. Despite our thorough knowledge of black hole dynamics and our ability to solve Einstein’s equations in situations of ever increasing complexity, the deeper implications of the very existence of black holes for our understanding of space, time, causality, information, and many other things remain poorly understood. In this paper I survey some of these problems. If something is going to be clear from my presentation, I hope (...) it will be that around black holes science and metaphysics become more interwoven than anywhere else in the universe. (shrink)