The following text (in French) was presented at Marciac, France, on July 2015, at the conference « Sciences Participatives » organised by INRA. This day was part of the project lead by the CEO of INRA and president of the National research alliance for the environment, M. François Houllier, concerning participative sciences, which the Ministry of national education had entrusted to M. Houlier. Invited at the round table of that day, I proposed the following discourse, as a way to tackle the issue of participative sciences.
You can also dowload my speech from the site of HAL archives-ouvertes.fr.
The programme of the day is available here.