What is the contribution of Duhem’s work to the modern historiography? His interpreters have been discussing this question and ordinarily have recognized that the main aspect in his extensive work is connected with his research of medieval science. It has become customary to speak of the “discovery of medieval science” as his foremost historiographic achievement. This paper aims to discuss some aspects of Duhem’s historiography more for its promotion of a new historical perspective than for its results. Duhem’s legacy for (...) modern historiography can be investigated from the characteristics that mark this new perspective, as regarded by Thomas Kuhn. (shrink)

One of the most deeply entrenched ideas in Popper's philosophy is the analogy between the growth of scientific knowledge and the Darwinian mechanism of natural selection. Popper gave his first exposition of these ideas very early on. In a letter to Donald Campbell, 1 Popper says that the idea goes back at least to the early thirties. 2 And he had a fairly detailed account of it in his "What is dialectic?", a talk given in 1937 and published in 1940: (...) 3 If we want to explain why human thought tends to try out every conceivable solution for any problem with which it is faced, then we can appeal to a highly general sort of regularity. The method by which a solution is approached is .. (shrink)

In a paper entitled “Revolution in Permanence”, published in the collection “Karl Popper: Philosophy and Problems”, John Worrall (1995) severely criticised several aspects of Karl Popper’s work before commenting that “I have no doubt that, given suffi-cient motivation, a case could be constructed on the basis of such remarks that Popper had a more sophisticated version of theory production......” (p. 102). Part of Worrall’s criticism is directed at a “strawpopper”: in his “Darwinian Model” emphasising the similarities and differences between genetic (...) mutation, variation in animal behaviour and the gestation of scientific theories, Popper (1975, 1981, 1994) never stated that tentative scientific conjec-tures “while more or less random, are not completely blind.” He was referring to variation in animal species behaviour, and about tentative scientific conjectures he said nothing, although common sense would indicate that presumably he regarded them as being less blind and less random. In Popper (1977, 1983), giving a summary of his “Darwinian Model”, he repaired this omission about tentative scientific conjectures by inserting the sentence “On a level of World 3 theory formation they are of the character of planned gropings into the unknown.” Recent developments in the field of genetics (see for example Raff (1996), Lewis (1999), Korn (2002)) indicate that Popper’s intuitions were along the modern lines while Worrall’s intuitions are old fashioned. Therefore Popper’s “Darwinian Model” remains both viable and fruitful. (shrink)

In a paper entitled "Revolution in Permanence", published in the collection "Karl Popper: Philosophy and Problems", John Worrall severely criticised several aspects of Karl Popper's work before commenting that "I have no doubt that, given sufficient motivation, a case could be constructed on the basis of such remarks that Popper had a more sophisticated version of theory production......". Part of Worrall's criticism is directed at a "strawpopper": in his "Darwinian Model" emphasising the similarities and differences between genetic mutation, variation in (...) animal behaviour and the gestation of scientific theories, Popper never stated that tentative scientific conjectures "while more or less random, are not completely blind." He was referring to variation in animal species behaviour, and about tentative scientific conjectures he said nothing, although common sense would indicate that presumably he regarded them as being less blind and less random. In Popper, giving a summary of his "Darwinian Model", he repaired this omission about tentative scientific conjectures by inserting the sentence "On a level of World 3 theory formation they are of the character of planned gropings into the unknown." Recent developments in the field of genetics, Lewis, Korn ) indicate that Popper's intuitions were along the modern lines while Worrall's intuitions are old fashioned. Therefore Popper's "Darwinian Model" remains both viable and fruitful. (shrink)