Considering the complexity of the artefact (artefact means here human construction, to be opposed with the Nature construction. It gathers objects, processes, services and their systems), great design improvements can succeed thanks to an interdisciplinary approach. However, interdisciplinary knowledge sharing encounters many issues, due to disciplinary ontology and human subjective understanding. For designers to adopt an interdisciplinary behaviour, a method is required. This paper introduces a methodological solution, based on intuition.