An interminable dispute over the need to distinguish between interdisciplinarity, multidisciplinarity, and transdisciplinarity has already filled thousands of printed pages, without an agreement being apparently reached. There is no dispute however over the fact that we need decision-makers and advisors with the ability to tackle complex problems and to face situations where specialized knowledge is not the only requisite but the capacity for holistic thinking is paramount. This article describes a method that has been tested for ten years at the Free University of Brussel’s Master Programme on Human Ecology to prepare students to perform beyond the limits of their own professional domain. The students enrolled in this program come from several countries in different continents, and from a variety of professional backgrounds.