Interdisciplinarity is emerging as a new development in academic education and research. The analysis of its potential, but also the obstacles it encounters, highlights the complex relationship it has with institutionalized disciplines. Interdisciplinarity is seen here as an interaction process between different disciplines and not just as a simple addition of heterogeneous knowledges. Instead of asserting that there is a unified theory, which would be equivalent to the birth of a new paradigm, we must instead take into account the diverse epistemological positions that work together for the co-development of the interdisciplinary process.