Policy and state in complexity economics

Complexity economics has developed into a powerful empirical, theoretical, and computational research program in the last three decades, advancing more realistic economics. It converges with longstanding heterodox schools, and its theoretical and empirical findings are consistent with older heterodox research interests and predictions. Economic complexity is characterized by path-dependence, idiosyncrasies, some self-organization capacity, structural emergence, and certain statistical distributions in economic topologies and motions, as complex economic systems move between building order and phases of sudden disorder. In agent-based systems, underlying "intentionality" of agents includes improving their performance, reducing perceived complexity, and generating social institutions. Boosted by the financial crisis 2008ff., a surge to explore complexity-economics' policy implications has emerged. This chapter will briefly review the literature on economic Complex Adaptive Systems (CAS) and derive implications for economic-policy interventions and the state to act upon socio-economic complexity. From an "evolution-of-cooperation" perspective, we exemplarily derive some more specific policy orientations, specified "framework-policy" or "interactive-policy" approaches, embedded in a conception that we call "new meritorics". We consider some required structures and capacities that a modern effective state, capable of a strong and persistent, but learning and adapting "complexity policy", should have.