Jeremy Sherman distills Terrence Deacon's breakthrough natural science hypothesis for the emergence of agents and agency, selves and aims in an otherwise aimless universe. The theory cuts a new path through the dualistic spirit vs. mechanism debate, unifying the hard and soft sciences and suggesting new solutions to philosophical mysteries.

Deacon’s approach to resolving mechanism/semiotic duality exemplifies an innovative methodology for imposing greater rigor on abductive assumptions in biosemiotics and beyond. His approach specifies interpretive agents and their responsive effort as the categories of phenomena to be explained. Implicit in his approach are five standards for imposing greater rigor on abduction or categorization, here named and described by the author.