This document discusses the role of design in societal transitions to more sustainable futures. It addresses the complex temporal nature of "systems problems" that exist at multiple scales within social and environmental systems. The authors argue that designers need to understand how to work iteratively over long time horizons at multiple scales. They discuss concepts like temporal complexity, transition design, and contingencies to emphasize the radical contingency of our worlds and the need to design within transitions rather than seeking resolution or endpoints. The focus is on evaluating situations and rapidly adapting to changing conditions to profit from what is harmful to opponents or advantageous at a given time.