I recall the late John N. Warfield (the originator of the modeling processes - indeed, of the whole process - embedded in the OPMS) telling me - when I wrote to him about the OPMS and how I proposed to use it - that the greatest difficulty I would face in future would be the opposition from many of those whom I might believe should and would be my first and best supporters; he also said that this would occur mainly because of their inability to confront, successfully, their own failures and failings.