This book demonstrates how human-centered designers can play an important role in systems, using case studies of possible conceptual design entities. Thus, it also serves as an advanced book that can be referred to by systems designers and educators. The key focus is to demonstrate concepts through human-centric design practice. The contributions help human-centred designers and provide them with new thinking tools to deal with systemic problems. It will also provide concepts and terms to help understand complex systems. The emphasis is on complexity and complex thought. This first contribution help readers understand how systems thinking offers a coherent intellectual field of study for designers and encourage you to apply these ideas in your own design projects. The key emphasis is on a practice-based approach to humancentered design for systems and how it can be achieved.