Abstract

This paper discusses critically the fundamental elements of the Stegmüller/Sneed-reconstruction of Kuhn's normal science concept. It is argued that a) Kuhn himself cannot accept this reconstruction if he wants to describe theory dynamics in the past; b) the reconstruction is not based on a pure non-statement view; c) to have a theory in the sense of Kuhn, should be related to the ordered pair <K,Iₒ> to ensure the desired constancy over time; d) the reconstruction implies, contrary to Kuhn, the ability of rejecting a theory without having an alternative one; e) the rejection of a theory can be the result of a falsifying procedure and, therefore, theories are not immune from falsification; f) the reconstruction still contains rationality gaps; g) the reconstruction shows more precisely than Kuhn's work that Popper is right when he attacks normal scientist's behaviour; h) the positions of the Kuhnians and of the criticists could be reconciled partially