This book uses new ideas and language for understanding how self-organization and complexity trend toward increased efficiency.  Different measures for efficiency from multiple disciplines are used to probe the ones that provide the most insight. One major goal is to seek a common framework to trace the increase of efficiency as a measure of the level of organization and evolutionary stage of a complex system. 

The chapters come from a satellite meeting hosted at the Conference on Complex Systems, in Cancun, 2017.  The contributions will be peer-reviewed and contributors from outside the conference will be invited to submit chapters to ensure full coverage of the topics. This text will appeal to students and researchers working on complex systems and efficiency.