In this study we are asking ourselves whether ■Systems Dynamic Modelling■ can be combined with ■Backcasting from Sustainability Principles■ to support strategic planning towards sustainability. From the perspective of a ■Backcasting Practitioner■, ■Systems Dynamic Modelling■ is a set of tools that help gaining insight into the detailed functioning of a given system, but lacks the ability to support strategic planning towards sustainability ■ unless complemented with a satisfactory goal definition. ■Backcasting from Sustainability Principles■, in the eyes of a ■Systems Modeller■, is the planning step of a learning loop that also includes action implementation and follow-up. Since no dynamic modelling takes place this methodology typically produces laundry lists of isolated problems and solutions, thereby missing potentially important feedback loops, delays, hidden problems and suitable intervention points in the system.