The act of painting a design is a form of agency, and the overall style of that design in part can be conceptualized as a kind of structure. This perspective is used as a basis for analyzing chronological changes in designs on Mimbres Black-on-white pottery (ca. AD 750–1150) from Southwest New Mexico. Specific focus is on a methodology that can be used to detect innovations, that is, the introduction of novel designs that are incorporated into the design corpus and thus transform the structure. The conceptualization of a particular tradition (in this instance, pottery painting) as a form of structure analogous to general structure in Giddens' sense thus provides important insights into the recursive relationship between agency and structure.