Many people are able to act on a model that works for them, but have great difficulty in describing the model to others. It is not necessary to have 100 percent agreement on a given model, but it will help to approach that in areas that require a high level of cooperation and alignment. It is a well-established principle that the ability to form a clear mental image of the process you want to use and the result you want to accomplish significantly increases your chances of achieving the desired outcome. Building a shared hi-level map enables people to use imagery productively. The Productivity Tools provide a way to achieve much higher precision in execution because people are working from the same mental maps.
Approximate maps are acceptable for some tasks, but most complex tasks require precision.