Whitehead’s understanding of efficient causation is developed in reaction against the prevailing worldview of his scientific and philosophical predecessors’ material abstraction, bodily sensationalism, subject-object bifurcation, and partial subjectivism. Whitehead believed these ideas precluded the development of any satisfactory account of causal relation and connectivity. His response is to offer a forensic account of the nature of subjective experience within which causal efficacy could be accommodated. Yet Whitehead’s position has its own problems. In response, this article argues for a primordial basis to causal connectivity and for understanding physical causation in terms of conceptual realization.