In all the External Measures pieces, a varied set of behaviors interact to create a complex and layered composition. As a viewer moves around, bold designs and graphic elements appear in the projection, which are direct results of their movement. The sophisticated programming enables a variety of visual responses to people's movements, where the piece responds to a person's initial presence, speed, position, and stillness with a varied set of visual effects.

Through a process of kinesthetic investigation, participants can explore the structure and composition of the piece. Their movements affect what is immediately visible, but also the state of the entire system – allowing their actions to engage with future moments as well. At each moment the state of the composition is determined by what has come before, and influences future possibilities. Moments interpenetrate, visually and metaphorically extending their reach.