What is MULTIDISCIPLINARY and what is for? Multidisciplinary working is often seen as revolutionary by skill-centred specialists but it is simply a fundamental expression of being guided by holism rather than reductionism (J. Smuts, Holism). This paper wish to present the meaning of Multi-Disciplinary in Design and the related actual problems, in particular: - The dissolution of the (Design) Disciple(s).... and Multidisciplinarity. - Crisis, Instability and Complexity of Designing - An Holistic and Multi-scale Design Approach: Integrated Modification Methodology (IMM). The boundaries of what were once recognized as discrete design disciplines have been ruptured and continue to dissolve. An indeterminacy of professional boundaries now exists, and fluid patterns of employment within and between traditional design disciplines is commonplace. (C. Bremner) Did Design loose its discipline?