A world without individual entities? An advice to not to extract immediate ontological consequences from quantum theory. Should we assume a world without individual entities? I pledge not to extract immediate ontological consequences from quantum theory. My intention is to focus on the complexity of ontological concepts commonly associated with quantum theory. Using as an example the compatibility of EPR correlations with the existence of individual entities, it is shown that an absolute rejection of an ontological category, based on some (...) aspects of the formalism of quantum theory, does not seem reasonable. A consequence of this argument is that the common sense view – the world is composed of individual entities – can be maintained, despite of the particularities of quantum mechanics. (shrink)

Summary In this report on the present state of the discussion about the interpretation of quantum mechanics an attempt is made to provide an idea of the philosophical relevance of the foundations of physics. A simplified model of the measuring process is given which shows the difficulties in the interpretation of quantum mechanics. It is argued against Bohr's solution (also in a version of H. Putnam). Two examples show possible philosophical consequences of quantum mechanics: The variety of quantum logics challenges (...) the foundations of logic, the paradox of Einstein, Podolsky and Rosen (with Bell's inequality) may be interpreted along the lines of holism. Against alleged refutations of realism by means of quantum mechanics, a realist standpoint is maintained. A proper interpretation of quantum mechanics from an epistemological point of view seems still to be lacking. (shrink)

This paper describes the development of theories of scientific explanation since Hempel's earliest models in the 1940ies. It focuses on deductive and probabilistic whyexplanations and their main problems: lawlikeness, explanation-prediction asymmetries, causality, deductive and probabilistic relevance, maximal specifity and homogenity, the height of the probability value. For all of these topic the paper explains the most important approaches as well as their criticism, including the author's own accounts. Three main theses of this paper are: (1) Both deductive and probabilistic explanations (...) are important in science, not reducible to each other. (2) One must distinguish between (cause giving) explanations and (reason giving) justifications and predictions. (3) The adequacy of deductive as well as probabilistic explanations is relative to a pragmatically given background knowledge-which does not exclude, however, the possibility of purely semantic models. (shrink)

In this report on the present state of the discussion about the interpretation of quantum mechanics an attempt is made to provide an idea of the philosophical relevance of the foundations of physics. A simplified model of the measuring process is given which shows the difficulties in the interpretation of quantum mechanics. It is argued against Bohr's solution (also in a version of H. Putnam). Two examples show possible philosophical consequences of quantum mechanics: The variety of quantum logics challenges the (...) foundations of logic, the paradox of Einstein, Podolsky and Rosen (with Bell's inequality) may be interpreted along the lines of holism. Against alleged refutations of realism by means of quantum mechanics, a realist standpoint is maintained. A proper interpretation of quantum mechanics from an epistemological point of view seems still to be lacking. In my childhood the legend was current, that only twelve men in the World understood Einstein's theory. Nowadays, relativity is quite tame; but I shall argue presently thatnobody yet understands the quantum theory. Howard Stein. (shrink)

The author takes the interdisciplinary seminar on Evolutionary Epistemology at the 7th International Wittgenstein Symposium as the occasion to discuss the question of the status, achievements and limits of Evolutionary Epistemology. She comes to the conclusion that neither its critique of thequid juris question in traditional epistemology nor its own philosophical pretensions can be justified. But it is a new science which is relevant and a challenge to traditional epistemology and philosophy of science in that it opens up a horizon (...) of new questions which they will have to take seriously. Sie sind den Kindern ähnlich, die, wenn sie in einen Spiegel geguckt, ihn sogleich umwenden, um zu sehen, was auf der anderen Seite ist. Johann Wolfgang von Goethe Es gab Ewigkeiten, in denen (der menschliche Intellekt) nicht war;... nur sein Besitzer und Erzeuger nimmt ihn so pathetisch, als ob die Angeln der Welt sich in ihm drehten. Könnten wir uns aber mit der Mücke verständigen, so würden wir vernehmen, daß auch sie mit diesem Pathos durch die Luft schwimmt und in sich das fliegende Zentrum dieser Welt fühlt. Es ist nichts so verwerflich und gering in der Natur, was nicht durch einen kleinen Anhauch jener Kraft des Erkennens sofort wie ein Schlauch aufgeschwellt würde; und wie jeder Lastträger seinen Bewunderer haben will, so meint gar der stolzeste Mensch, der Philosoph, von allen Seiten die Augen des Weltalls teleskopisch auf sein Handeln und Denken gerichtet zu sehen. Friedrich Nietzsche. (shrink)