[Criticism of the concept of progress in encyclopedic psychiatry].

The concept of progress in biological psychiatry its being opposed in this study to another one which makes it necessary to adopt a different mode of thinking and to be ready for a change of paradigms. Both concepts are not exclusive of each other, yet, one cannot confer either of them an absolute value without limiting the subject and the methological tools necessary to psychiatric-psychopathological research. This will be explained, using everyday clinical cases.