Missing from many of these efforts is the understanding of how boundaries physically behave. The definition of boundary that people typically accept is one similar to that offered by the Oxford English Dictionary: a real or notional line marking the limits of an area. As such, the boundary is static and defined, and its requirement for legibility (marking) prescribes that it is a tangible barrier – thus a visual artifact. For physicists, however, the boundary is not a thing, but an action. Environments are understood as energy fields, and the boundary operates as the transitional zone between different states of an energy field. As such, it is a place of change as an environment’s energy field transitions from a high-energy to low-energy state or from one form of energy to another. Boundaries are therefore, by definition, active zones of mediation rather than of delineation. We can’t see them, nor can we draw them as known objects fixed to a location. Breaking the paradigm of the ...