Using the resources of the methodology of theory of science we propose a rational reconstruction of Duhem's conception of science, interpreting it as a normative theory of the dynamics of knowledge. Such a reconstruction helps to establish that Duhem cannot be classified as a conventionalist/pragmatist as proposed in the standard interpretation, and, furthermore, that Duhem proposes to construct a conception of science as a middle way between a classical metaphysical conception and a conventionalist/pragmatist conception. The methodological strategy for this middle way is the proposal of a structural and convergent realism. Duhem replaces the transcendental subject of the classics with a transcendental theory to be reached by a dynamic process.
Methodology of theory of science; Dynamic theory of knowledge; Duhem; Poincaré; Structural and convergent realism