Fields of study progress not by understanding more about what already exists, although that is a useful step, but by making guesses about possible better futures. The guesses consist of small forays into those futures, using strategies that are variously called learning through making, research through design, or more simply: prototyping. While traditionally associated primarily with industrial design, and more recently with software development, prototyping is now used as an important tool in areas ranging from materials engineering to landscape architecture to the digital humanities. This book collects current theories and methods of prototyping across a dozen disciplines and illustrates them through case studies of actual projects, whether in industry or the classroom. provides context, a theoretical framework, and a set of methodologies for interdisciplinary collaboration in design. Each chapter offers a different disciplinary perspective on prototyping and provides a case study as a point of comparison for identifying commonalities and divergences in current practices. In examining the central role of prototyping in design research, this edited collection demonstrates theoretical and methodological transferability across disciplines not typically thought to be related, including post-human design, theatre, tabletop game design, landscape architecture, and arts entrepreneurship.