A rigorous primer in movement studies for designers, engineers, and scientists that draws on the fields of dance and robotics. How should a gestural interface react to a "flick" versus a "dab"? Versus a "punch"? Should robots reach out to a human counterpart with a direct, telescoping action or through a circuitous arc in space? Just as different movements express the different internal states of human movers, so too can the engineered...