Already in the first funding phase, the collaboration of the applicants and the on-site team with the fellows was based on the principle of annual themes. These were meant to designate neither separate research fields nor individual disciplinary competencies, but rather aimed at the collective clarification of concepts and examination of the respective research subjects. Particular attention was paid to the historicity of the various concepts in their distinct disciplinary versions, with a focus on the continuity and transformation of concepts, and especially on epochal shifts and transitions.