We give a unified account of some results in the development of Polyadic Inductive Logic in the last decade with particular reference to the Principle of Spectrum Exchangeability, its consequences for Instantial Relevance, Language Invariance and Johnson's Sufficientness Principle, and the corresponding de Finetti style representation theorems.

Although the existence of tachyons is not ruled out by special relativity, it appears that causal paradoxes will arise if there are tachyons. The usual solutions to these paradoxes employ some form of the reinterpretation principle. In this paper it is argued first that the principle is incoherent, second that even if it is not, some causal paradoxes remain, and third, the most plausible “solution,” which appeals to boundary conditions of the universe, will conflict with special relativity.

Alexandre Koyre was one of the most prominent historians of science of the twentieth century. The standard interpretation of Koyre is that he falls squarely within the internalist camp of historians of science-that he focuses on the history of the ideas themselves, eschewing cultural and sociological interpretations regarding the influence of ideologies and institutions on the development of science. When we read what Koyre has to say about his historical studies (and most of what others have said about them), we (...) find him embracing and championing this Platonic view of his work. Ultimately I think this interpretation of Koyre's history of science is lopsided and in need of correction. I claim, rather, that a careful reading of Koyre's work suggests that a tension exists between internal and external methodological considerations. The external considerations stem from Koyre's commitment to the unity of human thought and the influence he admits that the 'transscientifiques' (philosophy, metaphysics, religion) have on the development of science. I suggest in conclusion then, that if we are to put a philosophical label on his work, rather than 'Platonist', as has been the custom, 'Hegelian' makes a better fit. (shrink)

Mayhew wants to rescue Aristotle from charges of misogynic ideology. Although there are residues of traditional Greek assumptions in the biological works, Mayhew holds Aristotle was not rationalizing from these ideas. Rationalization involves self-deception, evasion of truth, and the “desire to support some outlook, agenda, or position”. Mayhew will argue that Aristotle generalized from insufficient and flawed evidence, but that it was an honest attempt at scientific reasoning and not an attempt to show that women are inferior.

At once a distinguished mathematician and an important figure in the Vienna Circle, Hans Hahn conducted a seminar in 1924-25 on the Principia Mathematica to "a very large audience" of mathematicians and philosophers. Translated from the German and edited by Brian McGuinness, with a biographical introduction by Karl Menger, the present volume consists largely of papers in the philosophy of mathematics covering the years 1929-34. "Our adoption of Russell’s position," writes Hahn, "may cause some surprise in Germany where all ears (...) are tuned, to the controversy between... Hilbert and Brouwer." It turns out, however, that Wittgenstein has made the decisive move: mathematics consists of tautologies, Russell having "shown" how to get by without sets. (shrink)

Are the truths of arithmetic analytic, as Frege insisted in opposition to Kant? Although bits and pieces of an adequate answer to the question are doubtless to be found scattered throughout the literature, one continues to be disappointed by the absence of any extended treatment of the issue that would undertake to digest the rich body of diverse material that has accumulated since the publication of Frege's Begriffsschrift in 1879.

If the slogan "No entity without identity" might be said to encapsulate the new essentialism, it has in any case been felt to serve the working ontologist as a powerful tool for ruling out certain dubious entities. The first half of Baruch Brody’s book consists in a radical "critique of this whole philosophical tradition," as it is seen to be "based upon a fundamental erroneous assumption," namely that "the truth-conditions of claims concerning identity vary as the type of entity in (...) question varies." In fact no such parochial identity conditions need be invoked according to Brody, seeing that the Principle of the Identity of Indiscernibles will suffice to define identity in omnibus fashion across the board, even to the extent of being "understood by those who want to learn the meaning of ‘identity'.". (shrink)

The Latin manuscript of Hobbes’s critique of White’s De mundo dialogi tres was discovered among the Mersenne papers in the Bibliothèque Nationale by Jean Jacquot and published by Jacquot and Jones. The present English translation makes generally available a text that, while following the disposition of White’s, goes beyond commentary to constitute a work of philosophy in its own right and a significant addition to the Hobbesian corpus.