This book explores how our lives and social interactions have become split between two intertwined, but not integrated, realities: the physical and the digital. Our sense of presence in the here and now has become fragmented, and yet earlier design approaches reinforced the problem, rather than leading to improvements. The authors address these issues by laying out a new human computer interaction (HCI) design approach – human-experiential design – rooted in a return to first principles of how people understand the world, both consciously and unconsciously. The application of this approach to the design of blended reality spaces is described in detail. Examples and scenarios of designing them to overcome the problems inherent in a variety of mixed reality settings are provided. Human-Experiential Design of Presence in Everyday Blended Reality will appeal to undergraduate and graduate students and researchers in interaction design, psychology, HCI and computer application studies, as well as practicing interaction designers and computer professionals. It will also be of interest to communication, media and urban design students, and to all readers with an interest in the technology-mediated future.