Dynamically complex multi-dimensional societal issues are societal issues characterised by complex time evolutionary behaviour on multiple dimensions, and very often also by many uncertainties, different ethical aspects, multiple views and multiple parties concerned. In this paper, the use of system dynamics (and multi-criteria decision analysis) for decision-making in case of such dynamically complex multi-dimensional societal issues will be looked at. More specifically will we look at the resulting (potential) capacity to support decision-making in case of multiple dimensions, multiple time scales, uncertainty, multiple decision-makers and third parties, and ethical and sustainable aspects, power, coercion, and uneven distribution. Related to these aspects are robustness, resilience, flexibility and responsibility which will be discussed too.