The Doctoriales du laboratoire PLÉIADE 2025, on 24 and 25 March 2025, will be a key event for the laboratory's young researchers, providing a forum for discussion and reflection on two major themes: the construction of scientific knowledge today (theme 1) and the need to (re)think research methodologies (theme 2). Lastly, there will be time for discussion on the research projects of master's students, providing an opportunity to question the subjects and postures of developing research. In addition to presentations by young researchers, a plenary session will bring together Louis Staritzky (Pour une sociologie des tentatives, 2024) and Pascal Nicolas-Le Strat (Faire recherche en commun, 2024; Le travail du commun, 2016), who will discuss the contemporary challenges of research in society and changes in the research profession. This event will be an opportunity for participants to share their work, explore new avenues and benefit from enriching feedback from their peers and the speakers.