Intervention involves a number of dimensions which refer either to conceptual or disciplinary frameworks, to organizational frameworks such as professions or places of practice, or to larger social frameworks. There are also other defining elements, such as the distinction between private life and public life, the places of rationality and experience, or the duration of the intervention On the basis of this general analytic framework, the author proposes a number of avenues of reflection with respect to certain issues for all interventions and the possibility of classifying these interventions.