Rotate a Tree to start your project

During the Logical Thinking Process training course (June 2015), Bill Dettmer took us through the whole process and the associated tools at each step.

The process starts with the famous Goal Tree, assess the current situation and focus on critical root causes with the Current Reality Tree (CRT). Conflict Resolution Diagram (AKA Evaporating Cloud) may be used to resolve conflicting objectives and find solutions (called “injections”) to turn the CRT into a Future Reality Tree (FRT).
But in order to get to the future state, some obstacles will have to be removed or by-passed. This is done with the help of a Prerequisite Tree (PRT).

Once the PRT is ready, it is a kind of logical proof of concept. In order to turn this POC into real action, Bill shows how rotating a Prerequisite Tree gives an almost ready-to-use project network. Therefore, Critical Chain Project Management (CCPM) is the sixth tool of the Logical Thinking Process.

By the end of the demonstration, Philip Marris highlights the “beauty” of this process, patching one of Critical Chain Project Management “weaknesses”: how to ensure what is to be executed as a project is meaningful? He does this by giving a sadly funny and true example in aeronautic industry.


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