Core Concept:  The diagram illustrates a paradox of uncertainty.  The blue cone illustrates the many design ideas initially, but through the design process one has to settle on a particular solution.  While the red cone suggests there is a defined need (a single scenario) initially, but through time the owner/ occupants needs may shift in a variety of directions creating many possible scenarios.  Thus, there is a tension between the blue cone moving towards a certain solution, while the red cone moves towards the uncertainty of many futures.