The conditional interpretation of general categorical statements like ‘All men are animals’ as universally quantified material conditionals ‘For all x, if x is F, then x is G’ suggests that the logical structure of law statements is conditional rather than categorical. Disregarding the problem that the universally quantified material conditional is trivially true whenever there are no xs that are F, there are some reasons to be sceptical of Frege’s equivalence between categorical and conditional expressions. -/- Now many philosophers will (...) claim that the material conditional interpretation of laws statements, dispositions ascriptions, or any causal claim is generally accepted as wrong and outdated. Still, there seem to be some basic logical assumptions that are shared by most of the participants in the debate on causal matters which at least stems from the traditional truth functional interpretation of conditionals. This is indicated by the vocabulary in the philosophical debate on causation, where one often speaks of ‘counterfactuals’, ‘possible worlds’ and ‘necessity’ without being explicit on whether or to what extent one accepts the logical-technical definition of these notions. To guarantee a non-Humean and non-extensional approach to causal relations, it is therefore important to be aware of the logical and metaphysical implications of the technical vocabulary. -/- In this paper we want to show why extensional logic cannot deal with causal relations. Via a logical analysis of law-like statements ‘All Fs are Gs’ we hope to throw some new light on interrelated notions like causation, laws, induction, hypotheticality and modality. If successful, our analysis should be of relevance for a deeper understanding of any type of causal relations, whether we understand them to be laws, dispositions, singulars or categoricals. (shrink)

This paper argues that the technical notion of conditional probability, as given by the ratio analysis, is unsuitable for dealing with our pretheoretical and intuitive understanding of both conditionality and probability. This is an ontological account of conditionals that include an irreducible dispositional connection between the antecedent and consequent conditions and where the conditional has to be treated as an indivisible whole rather than compositional. The relevant type of conditionality is found in some well-defined group of conditional statements. As an (...) alternative, therefore, we briefly offer grounds for what we would call an ontological reading: for both conditionality and conditional probability in general. It is not offered as a fully developed theory of conditionality but can be used, we claim, to explain why calculations according to the RATIO scheme does not coincide with our intuitive notion of conditional probability. What it shows us is that for an understanding of the whole range of conditionals we will need what John Heil (2003), in response to Quine (1953), calls an ontological point of view. (shrink)

Hva er vitenskap og hva anser vi som vitenskaplighet? Dette er spørsmål som kan være verdt å se nøyere på før vi aksepterer at det er et klart skille mellom den etablerte skolemedisinen og alt det vi kaller ”alternativ medisin” eller ”alternativ behandling”. For hva er det egentlig som gjør noe til etablert og noe annet til et alternativ? Er den etablerte medisin mer vitenskapelig enn den alternative, ved at den for eksempel benytter seg av mer vitenskapelige metoder? Er resultatene (...) til den etablerte behandlingen ”vitenskapelig bevist”, mens den alternative behandlingen ikke har noen vitenskapelig dokumenterte resultater å vise til? Og har den alternative tradisjonen et forklaringsproblem med hensyn til hvorfor behandlingen eventuelt fungerer, mens den etablerte tradisjonen kan henvise til entydige kausale modeller? -/- Hva vi er tilbøyelig til å svare på slike spørsmål avhenger av hva vi legger i begrepene vitenskap og vitenskapelighet. (shrink)

Hva er vitenskap og hva anser vi som vitenskaplighet? Dette er spørsmål som kan være verdt å se nøyere på før vi aksepterer at det er et klart skille mellom den etablerte skolemedisinen og alt det vi kaller ”alternativ medisin” eller ”alternativ behandling”. For hva er det egentlig som gjør noe til etablert og noe annet til et alternativ? Er den etablerte medisin mer vitenskapelig enn den alternative, ved at den for eksempel benytter seg av mer vitenskapelige metoder? Er resultatene (...) til den etablerte behandlingen ”vitenskapelig bevist”, mens den alternative behandlingen ikke har noen vitenskapelig dokumenterte resultater å vise til? Og har den alternative tradisjonen et forklaringsproblem med hensyn til hvorfor behandlingen eventuelt fungerer, mens den etablerte tradisjonen kan henvise til entydige kausale modeller? -/- Hva vi er tilbøyelig til å svare på slike spørsmål avhenger av hva vi legger i begrepene vitenskap og vitenskapelighet. (shrink)

This paper explains how Kepler in his ``War onMars'' applied systems of models organized bothin a perspectival and in a stratifiedconceptual sense. With the help of thesesystems Kepler worked out successively moredeterminate models for the planetary orbits.Along the way he discovered the Keplerian lawsas consequences of the distance rule, hisleading regulative principle. The selection ofdecisive, so called privileged, observations,as well as the determinate geometrical andkinematical description of the phenomena,result from the application of this principleto the developing of models. Kepler's method (...) ofdiscovery may therefore appropriately bedesignated converse abduction. (shrink)