Praxiology starts from the point of view of effectiveness. It has three components: analysis of concepts involving purposive actions; critique of modes of action from the viewpoint of efficiency; and normative advisory aspects in recommendations for increasing human efficiency. The third volume of this series aims to make more visible to the English readership the importance of design throughout the many disciplines, professions, and arenas of human endeavor. Design is a pervasive part of our daily lives to such an extent that it goes largely unnoticed. It has become a near invisible aspect of our civilized existence. But when we stop for a moment to study an artifact, activity, group, and institution, or any entity or life process, we can begin to see and imagine the design, the designing, and the human designers who contributed to it. Design and Systems represents a set of contributions made to the methodological study of design. Chapters and contributors include: "Toward Metamedicine" by Kazem Sadegh-Zadeh; "Design Engineering Methodologies in English and German Language Regions and Influences of Culture" by Wolfgang E. Eder; "Systems Methodology and Design" by Gerald Nadler; "Problem Forming, Problem Finding, and Problem Solving in Design" by Herbert A. Simon; and "Design: A Journey to the Future" by Bela H. Banathy, Design and Systems continues the trend of original research done in a little-known, but important area. It will be an enlightening read for sociologists, philosophers, and scholars interested in the study of design.