Coherence is a highly desirable characteristic of every human enterprise. Everything should "hang together" and be "true as a whole," to quote common dictionary phrases. Yet one of the most frustrating and disturbing aspects of working life is that everything doesn't hang together and isn't true as a whole. Most things only "sort of" fit -- if they fit at all. Gaps and inconsistencies abound. Assumptions must constantly be made. Confidence is hard to muster.