/ Résumé / Technological advances increase the possibilities for the aesthetics of interaction and the user experience. This is a growing field in the Human-Computer Interaction community (HCI). However, Lenz et al. [3] show that little is known about the relation between experiences and interaction. The current study explores this relation through the design of an interactive lamp. We compare a direct and a delayed coupling between the user’s action and the reaction of the light. The results provide empirical evidence that deliberately violating one of the unification principles (i.e., delayed response) triggers a more positively engaged experience. We discuss the result and further implications for design research.