Each organism, no matter how simple or complex, has around it a sacred bubble of space, a bit of mobile territoriality which only a few other organisms are allowed to penetrate and then only for short periods of time.
It's about businesses nervous about taking on school leavers because of a mass of red tape. It's about health and safety regulations and green fines.
Well, the whole story is in the book, but the short answer is that I was the first information architect in an organization that was traditionally design-oriented, and I felt I needed a tool to help me gain the trust and support of my colleagues.