 The invention of the patient trainer: Rethinking training engineering and promoting partnership in health 
The participation of patients in the training of health professionals constitutes a paradigmatic break, not only with regard to what is going on in this particular field but also with regard to what can be observed in all training courses for the helping professions. The purpose of this article is to consider this mobilization of patient trainers both as an actual change and as a potential operator of change. To do this, we will rely on an intervention research aimed at promoting partnership in health and on the functioning and productions of one of the working groups dedicated to the training of health professionals.