Practical questions such as how can a human and computer system tell when a movement is volitional, or when a set of movements can be considered a single gesture, become philosophical questions when investigated rigorously across different applications and situations. Over the years, the media choreography apparatuses and techniques have provided tools for investigating memory, temporal experience and rhythm. These in turn provide insights into how (and why) certain design approaches work better than others for creating rich rather than complicated responsive environments.