According to Hempel’s raven paradox, the observation of one non-black non-raven confirms the hypothesis that all ravens are black. Bayesians such as Howson and Urbach (Scientific reasoning: the Bayesian approach, 2nd edn. Open Court, Chicago, 1993 ) claim that the raven paradox can be solved by spelling out the concept of confirmation in the sense of the relevance criterion. Siebel (J Gen Philos Sci 35:313–329, 2004 ) disputes the adequacy of this Bayesian solution. He claims that spelling out the concept (...) of confirmation in the relevance sense lets the raven paradox reappear as soon as numerous non-black non-ravens are observed. It is shown in this paper that Siebel’s objection to the Bayesian solution is flawed. Nevertheless, the objection made by Siebel may give us an idea of how Bayesians can successfully handle situations in which we observe more than one non-black non-raven. (shrink)

Burning questions.--The humanistic view of life.--Must empiricism be limited?--Truth-seekers and sooth-sayers.--Must pragmatists disagree?--Humanisms and humanism.--Has philosophy any message for the world?--Must philosophy be dull?--Is idealism incurably ambiguous?--The ultra-Gothic Kant.--Goethe and the Faustian way of salvation.--Plato's Phaedo and the ancient hope of immortality.--Plato's Republic.--How far does science need determinism?--The relativity of metaphysics.--Ethics, casuistry, and life.--Prophecy and destiny.--The crumbling British empire.--Can democracy survive?--The possibility of a United States of Europe.--Ant-men or super-men?--Fascisms and dictatorships.--Humanist logic and theory of knowledge.--Multi-valued logics - and others.--Data, (...) datives, and ablatives.--Are all men mortal?--How is "exactness" possible? (shrink)