This promotional extract of a book chapter is a publication out of a conférence (full text on: Olivier Marty. The History of a Young University: Paris 8, 1968-2022. On Young Universities, Paderborn University, Jun 2022, Paderborn, Germany. ⟨halshs-04644081⟩). I present a model of creation of new educative institutions based on new knowledge available and a social class to target. This is based on the history of French grandes écoles and a young university history.