Abstract
Even though the emerging field of user experience generally acknowledges the importance of esthetic qualities in interactive products and services, there is a lack of approaches recognizing the fundamentally temporal nature of interaction esthetics. By means of interaction criticism, I introduce four concepts that begin to characterize the esthetic qualities of interaction. Pliability refers to the sense of malleability and tightly coupled interaction that makes the use of an interactive visualization captivating. Rhythm is an important characteristic of certain types of interaction, from the sub-second pacing of musical interaction to the hour-scale ebb and flow of peripheral emotional communication. Dramaturgical structure is not only a feature of online role-playing games, but plays an important role in several design genres from the most mundane to the more intellectually sophisticated. Fluency is a way to articulate the gracefulness with which we are able to handle multiple demands for our attention and action in augmented spaces.