ABSTRACT
Of late the philosophy of science has appeared a prisoner of paradox. The fundamental assumptions of the positivist worldview, dominant for over a century, that science is monistic in its development and deductive in its structure, lie shattered. But the ensuing accounts of science have been unable to sustain the coherence of precisely those features of science which they have placed to the fore of the philosophical agenda, namely scientific change and the non-deductive aspects of theory.
