We think of personal space as something that belongs entirely to ourselves. However,Boundary Functions shows us that personal space exists only in relation to others and changes without our control.

Boundary Functions is a set of lines projected from overhead onto the floor, dividing people in the gallery from one another. When there is one person on its floor, there is no response. When two are present, a single line cuts between them bisecting the floor, and dynamically changing as they move. With more than two people, the floor divides into cellular regions, each with the quality that all space within it is closer to the person inside than any one else.