Productive Threshold
Productive Threshold (pt) is an approximate position in the evolution of the system where work of the system is applied towards productivity and Drive-phase End-products . While systems often do not have technically discrete boundaries, this threshold can be said to occur when the system reaches a growth-stability that allows maximum investment in products and descendant systems. In Frames laid out sequentially like [3] The Trifold and [7] The Matrix, this is the boundary between the Cycle-dominated Cycle Phase and the Drive-dominated Drive Phase.