As part of the Great Transition Initiative, IISD's Mark Halle has written a chapter on Trading into the Future: Rounding the Corner to Sustainable Development. The chapter looks at three scenarios for the future, and suggests what might have to happen to the trading system if those scenarios are to play out. It starts with an analysis of the fundamental principles underlying the trading system and assesses the extent to which they are respected at present, or how they might be in the future. The trading system is certainly in transition. The question remains: to what?