Abstract

The disciplines within biology which have upheld neo-Darwinism are now in a state of Kuhnian crisis, the puzzle solving power of normal science being replaced with long debates about the interpretation of data, competition between rival articulations of the once universal paradigm, the re-opening of long solved problems, explicit discontent on the part of scientists and frequent appeals to philosophy and history. Similar features of distress are found when scientific research attempts to serve policy decisions. It is argued that the dramatic reduction in the efficiency of the consensus building machinery of science in areas relevant to public policy and in periods of Kuhnian crisis are explained in the same way; by the scientists' loss of autonomy, the weakening of disciplinary boundaries, and the elevation of the degree of critical scrutiny to which conjectures are submitted