The knowledge tree assumes that every element is absolutely necessary and every group is sufficient to achieve the higher-level necessary condition. Every time we learn something new we can add it to the knowledge tree; we do not have to reinvent the wheel every time we want to achieve a desired outcome. However, there will be dynamic situations that will impose additions, omission, and changes to the basic knowledge tree.

What is the Knowledge tree for POOGI – The Process Of Ongoing Improvement?

A necessary condition for embarking on the process of ongoing improvement is the recognition that the performance of any stable system is determined by its constraint(s).

Therefore, the acceptance of the concept of the constraint is a necessary condition.