Book excerpt: This collection is inspired by the coming retirement of Professor Wolfram Elsner. It presents cutting-edge economic research relevant to economic policies and policy-making, placing a strong focus on innovative perspectives. In a changing world that has been shaken by economic, social, financial, and ecological crises, it becomes increasingly clear that new approaches to economics are needed for both theoretical and empirical research; for applied economics as well as policy advice. At this point, it seems necessary to develop new methods, to reconsider theoretical foundations and especially to take into account the theoretical alternatives that have been advocated within the field of economics for many years. This collection seeks to accomplish this by including institutionalist, evolutionary, complexity, and other innovative perspectives. It thereby creates a unique selection of methodological and empirical approaches ranging from game theory to economic dynamics to empirical and historical-theoretical analyses. The interested reader will find careful reconsiderations of the historical development of institutional and evolutionary theories, enlightening theoretical contributions, interdisciplinary ideas, as well as insightful applications. The collection serves to highlight the common ground and the synergies between the various approaches and thereby to contribute to an emerging coherent framework of alternative theories in economics. This book is of interest to those who study political economy, economic theory and philosophy, as well as economic policy.