Under the title "It's teeming with chicken-and-egg problems," Klaus Jacob analyzes requirements for socio-ecological transformations and how they can be shaped. Sustainability transformations are described as a co-evolutionary process: Transformations are not solely due to technological innovations. They require and are accompanied by changes in all system areas: infrastructure and culture as well as institutions and social practices. The processes of change are mutually dependent. Feedback effects in particular must be taken into account: If mutual reinforcement consumes the necessary resources, regulation is required. Furthermore, chicken-and-egg problems must be considered: If changes in individual system elements depend on those of others and vice versa, then there is also a need for regulation here. In this light, approaches to transformation-oriented policies are examined and possible conflicts in the design of transformations are illuminated.