Complexity Theory replaces simple causality with an emphasis on networks, linkages, holism, feedback, relationships and interactivity in context, emergence, dynamical systems, self-organization and an open system, rather than the closed world of the experimental laboratory. Even if we could conduct an experiment, its applicability to ongiong, emerging, interactive, relational, changing, open situations, in practice, may be limited. It is misconceived to hold variables constant in a dynamical, evolving, fluid, open situation.