In this article we establish the existence of a number of new orbits in the automorphism group of the computably enumerable sets. The degree theoretical aspects of these orbits also are examined.

The starting-point is the distinction between concept and conception. Our conceptions of gold, for instance, are the different understandings we get when we hear the word ‘gold’ whereas the concept of gold consists in the scientific determination of what gold is. It depends on the context whether it is more reasonable to claim a concept or to look for fitting conceptions. By arguing against metaphysical realism and for non-metaphysical realism, I will elaborate on some philosophical reasons for dealing with conceptions (...) instead of concepts of God, and secondly, I will discuss how such conceptions should be critically assessed. (shrink)

This article deals with the philosophical problem of how to conceive reality. The difficulty consists in finding a middle way between the claim that reality is unconceptualised reality and the claim that there is no difference between what is real and what we experience as real. In this regard, the pragmatic tradition in philosophy promises to provide us with some fruitful ideas for steering a path between the two. The author applies some of these ideas in developing a pragmatic realist (...) philosophy of religion which is not reductionist and therefore acceptable for religious as well as non-religious philosophers of religion. First, he gives a very short summary of pragmatism as background to his proposal. Second, in contrast to the notion of realism in the pragmatic tradition he sketches the presuppositions of what is labelled religious or theological realism in present analytic philosophy of religion. Third, he distinguishes between ontological commitments that are metaphysical in character and ontological commitments that are not, drawing on Rudolf Carnap’s idea of the difference between internal and external questions of existence. Fourth, he presents Hilary Putnam’s criticism of a metaphysically realist conception of existence and fifth, Putnam’s defence of what he calls internal realism. Sixth, he puts forward a pragmatic idea of the difference between observational experiences and existential ones in our lives. Finally, he applies this pragmatic philosophy of religion to the question of whether it is reasonable to claim that belief in God presupposes God’s existence. (shrink)