2.A. Drawing up the conceptual framework:
The conceptual framework was drawn up gradually, step by step, starting from the framework of the drop of experience which can be found in my thesis (Whitehead, 1929, 1995, Epperson, 2004, Griffin, 2015) as follows:
Figure 15 : In black : the 5 phases of the Whiteheadian Concrescence (Whitehead, Process and Reality). In grey, the 5 phases of UNESCO-IHE IWRM.