It is important that an aim never be defined in terms of activity or methods. It must always relate directly to how life is better for everyone. . . . The aim of the system must be clear to everyone in the system. The aim must include plans for the future. The aim is a value judgment.
W. Edwards DemingExperience by itself teaches nothing... Without theory, experience has no meaning. Without theory, one has no questions to ask. Hence, without theory, there is no learning.
W. Edwards Deming