The problem remains. If the body is porous, participatory, and entangled in its social and physical matrix, then the self is vulnerable to toxic environments. How, then, to deal with this situation? The solution cannot be simply a change in self-relation or self-understanding. Insofar as the “system” that is the self is bigger than the individual, then no merely individual solutions will do. The system itself needs transformation. In the ancient world, one might try to control and limit the permeability